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limestone

B2 noun #26 가장 일반적인 13분 분량

limestone

상위 26

연습하기 예시 노트와 팁 limestone 30초 만에

설명 limestone in your Level:

Limestone is a type of rock. It is very common. You can find it in many places on Earth. It is usually white, grey, or light yellow. People use limestone to build things. Long ago, people used it to build big pyramids and old churches. Today, we use it to make roads and houses. Limestone comes from the sea. A long time ago, small sea animals died. Their shells fell to the bottom of the ocean. After many years, the shells turned into rock. This rock is limestone. Sometimes, you can see little pieces of shells in the rock. These are called fossils. Limestone is not as hard as some other rocks. Water can slowly break it down. This is how caves are made. If you go into a big cave, the walls are often made of limestone. It is a very useful rock for humans and for nature.

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Limestone is a sedimentary rock that is found all over the world. It is made mostly of a mineral called calcium carbonate. Most limestone forms in the ocean. When sea creatures like coral and shellfish die, their remains settle on the ocean floor. Over millions of years, the weight of the water and other layers of sand press these remains into solid rock. Because of this, limestone often contains fossils of ancient sea life. People have used limestone for thousands of years. It is a popular building stone because it is easy to cut into blocks. Many famous buildings, like the Great Pyramid in Egypt, are made of limestone. We also use it to make cement and to help plants grow in gardens. If you see a very white cliff or a deep cave, it is probably made of limestone. It is a soft rock, so rain can slowly dissolve it and create beautiful natural shapes.

무료 가입하고 전체 설명 읽기

Limestone is a common sedimentary rock that plays a vital role in geology and industry. It is primarily composed of calcium carbonate, which often originates from the skeletal fragments of marine organisms such as coral and mollusks. This means that limestone is essentially a recycled version of ancient sea life. Geologically, limestone is famous for creating 'karst' landscapes. Because limestone is soluble in water that contains a bit of acid (like rain), it can be dissolved over long periods. This process creates spectacular features like sinkholes, underground rivers, and massive cave systems. In terms of human use, limestone is indispensable. It is the main ingredient in cement and is used as an aggregate in construction. Farmers also use crushed limestone to treat soil that is too acidic. While it is a durable building material, it is sensitive to pollution; acid rain can damage old limestone statues and buildings by slowly eating away at the stone's surface.

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Limestone is a lithified sedimentary rock consisting predominantly of calcium carbonate (CaCO3). It typically forms in shallow, warm marine environments where biological activity is high. Most limestones are 'biogenic,' meaning they are formed from the accumulation of organic debris like shells, coral, and algal remains. However, some limestone can form chemically through the precipitation of calcium carbonate directly from lake or ocean water. One of the most significant characteristics of limestone is its solubility. It reacts readily with dilute acids, which is why it is so susceptible to chemical weathering. This leads to the formation of karst topography, characterized by complex drainage systems and subterranean caverns. In the industrial sector, limestone is a fundamental raw material. It is essential for the production of lime and cement, serves as a flux in steel manufacturing, and is a common filler in products like paper and plastic. Its historical importance as a dimension stone is evident in the enduring architecture of Europe and the Mediterranean.

Limestone represents a critical nexus between the Earth's biosphere and geosphere. As a sedimentary rock composed primarily of the polymorphs of calcium carbonate—calcite and aragonite—it serves as a massive reservoir for the planet's carbon cycle. The vast majority of limestone is autochthonous, forming in situ through the deposition of calcareous remains from marine organisms. This biogenic process is highly dependent on specific environmental conditions, typically requiring clear, well-lit, and warm waters, which explains the concentration of limestone formations in paleo-tropical regions. Beyond its geological significance, limestone's chemical reactivity is its defining feature. The dissolution of limestone by carbonic acid in groundwater facilitates the development of extensive karst systems, which are vital for global hydrology as they house significant aquifers. Industrially, the calcination of limestone is a cornerstone of the construction industry, though it is also a significant source of anthropogenic CO2 emissions. Its utility extends to desulfurization in power plants and as a pH regulator in various chemical processes, highlighting its multifaceted role in modern technology.

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Limestone is a quintessential sedimentary rock, serving as a profound lithological record of Earth's marine evolutionary history and geochemical fluctuations. Predominantly comprised of calcium carbonate, its genesis is typically a consequence of the complex interplay between biological productivity and carbonate equilibria in marine settings. From the microscopic coccolithophores that constitute chalk to the massive reef-building corals, limestone is the physical manifestation of organic carbon sequestration over geological timescales. The diagenesis of limestone—the process by which loose sediment is transformed into solid rock—involves intricate chemical alterations, including cementation and compaction. Its susceptibility to 'carbonation'—the reaction between calcium carbonate and acidic meteoric water—gives rise to the idiosyncratic morphology of karst terrains, which present unique challenges and opportunities for geomorphology and civil engineering. In the contemporary industrial landscape, limestone's role is ubiquitous yet often invisible; it is the sacrificial flux in metallurgical smelting, the foundational aggregate in the built environment, and a critical component in the mitigation of environmental pollutants. Its study is not merely a matter of mineralogy but an exploration of the Earth's long-term climate regulation and the structural history of human civilization.

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연습하기 예시 노트와 팁

limestone 30초 만에

Limestone is a sedimentary rock made of calcium carbonate, often containing fossils of marine life like shells and coral.
It is a vital industrial material used to produce cement, lime, glass, and as an aggregate for roads.
Geologically, it is famous for forming karst landscapes, including spectacular caves, sinkholes, and underground river systems.
While durable for building, limestone is soft enough to carve but remains sensitive to erosion by acidic rainwater.

Limestone is a fascinating and foundational geological material that plays a critical role in both the natural world and human civilization. At its core, limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3), usually in the form of the minerals calcite or aragonite. Most limestone forms in clear, warm, shallow marine waters through the accumulation of shell, coral, algal, and fecal debris. Over millions of years, these organic materials are compressed and lithified into solid rock. This biological origin is why you will often find beautifully preserved fossils within limestone deposits, making it a favorite for paleontologists and curious hikers alike.

Geological Classification: Limestone is categorized as a sedimentary rock, specifically a biogenic or chemical sedimentary rock depending on its precise formation process.

Beyond its natural beauty, limestone is an industrial powerhouse. It is the primary ingredient in the production of Portland cement, which is the literal foundation of modern infrastructure. When you look at a skyscraper, a bridge, or a sidewalk, you are looking at the processed legacy of ancient sea creatures. It is also used in the manufacturing of glass, the refining of metals, and as a key component in toothpaste and bread as a calcium supplement. In agriculture, crushed limestone is spread over fields to neutralize soil acidity, a process known as 'liming.' This versatility is why the word appears so frequently in contexts ranging from high-level geology lectures to home improvement discussions.

The ancient Egyptians carved massive blocks of limestone from local quarries to encase the Great Pyramid of Giza, giving it a shimmering white finish.

People use the term 'limestone' most often when discussing architecture, gardening, or natural landscapes. If you are visiting the White Cliffs of Dover in England or the limestone pavement of the Burren in Ireland, you are engaging with this rock on a grand scale. Because limestone is soluble in slightly acidic water, it is the primary architect of 'karst' topography—the dramatic landscapes of caves, sinkholes, and underground rivers. When a hiker mentions a 'limestone cave,' they are referring to a subterranean world carved out over eons by the slow dissolution of this specific rock.

Industrial Utility: Crushed limestone is the most common aggregate used for road bases and railroad ballast due to its durability and availability.

Farmers often test their soil pH and apply crushed limestone to ensure their crops have the ideal environment for growth.

The sculptor chose a fine-grained limestone for the statue because it was soft enough to carve but durable enough to last centuries.

The geologist pointed out the distinct layers of limestone in the canyon wall, each representing a different era of marine life.

Biological Origin: Many limestones are 'fossiliferous,' containing visible remains of ancient shells, coral, and microscopic organisms like foraminifera.

The kitchen renovation featured a beautiful limestone countertop that gave the room a warm, natural feel.

In summary, limestone is more than just a rock; it is a historical record of the earth's oceans and a fundamental building block of human society. Whether you are studying the earth's crust, building a house, or simply enjoying a scenic hike through a rocky gorge, limestone is likely present, silently supporting the world around you. Its unique chemical properties and biological history make it one of the most significant materials on our planet.

Using the word 'limestone' correctly requires an understanding of its role as both a specific material and a general geological category. In most contexts, 'limestone' functions as an uncountable noun when referring to the substance itself, but it can be used as a countable noun when referring to specific types or geological formations. For example, you might say, 'The building is made of limestone' (uncountable), or 'The geologists studied the various limestones of the region' (countable, referring to different types).

As a Material: When used as a building material, it is often paired with verbs like 'quarry,' 'carve,' 'lay,' or 'weather.'

When describing landscapes, limestone is frequently used as an attributive noun (acting like an adjective). Phrases like 'limestone cliffs,' 'limestone caves,' and 'limestone soil' are standard. It is important to remember that limestone is distinct from other rocks like granite or sandstone. While granite is hard and igneous, limestone is relatively soft and sedimentary. This distinction is crucial in technical writing. For instance, in a construction report, one might write: 'The foundation requires limestone aggregate to ensure proper drainage.'

Rainwater, which is naturally slightly acidic, slowly dissolves the limestone to create intricate cave systems.

In academic or scientific writing, the focus often shifts to the chemical and biological aspects. You might encounter sentences like: 'The biogenic limestone was rich in crinoid fossils.' Here, the word is modified to provide specific detail about its origin. In contrast, in a casual travel blog, you might see: 'We spent the afternoon climbing the rugged limestone peaks of the Dolomites.' The word here evokes a visual and tactile experience of the landscape.

Comparative Usage: In architectural contexts, limestone is often compared to 'brownstone' or 'travertine' to describe specific aesthetic finishes.

The cathedral's facade was restored using limestone from the original quarry to ensure a perfect color match.

Due to the high limestone content in the area, the local tap water has a distinct mineral taste.

The coastal path winds through ancient limestone formations that have been battered by the Atlantic for millennia.

Metaphorical Potential: While rare, limestone can metaphorically represent something that is seemingly solid but vulnerable to slow, persistent change.

The industrialist invested heavily in limestone processing plants during the post-war construction boom.

By varying your use of limestone—from a simple noun to a descriptive attributive—you can accurately convey everything from the technical specs of a construction project to the poetic beauty of a natural landscape. Always consider the audience: a geologist wants to know about the 'lithology,' while a homeowner just wants to know if the 'limestone tiles' will stain. Mastering these nuances allows for clear, professional, and evocative communication.

You will encounter the word 'limestone' in a surprising variety of real-world settings, often far beyond the confines of a geology classroom. One of the most common places is in the construction and home renovation industry. If you visit a stone yard or a high-end tile showroom, 'limestone' will be a prominent feature. Salespeople will discuss its 'honed finish' or its 'natural variations.' You might hear a contractor say, 'We’re using limestone pavers for the patio because they stay cool under the sun.' This practical application makes the word a staple of architectural and design vocabulary.

In the Media: Nature documentaries frequently use the word when describing spectacular landscapes like the Grand Canyon or the karst towers of Ha Long Bay.

Another major arena for the word is environmental and earth sciences. News reports on climate change or environmental disasters often mention limestone. For example, a report on acid rain might explain how it 'erodes historic limestone monuments.' Similarly, discussions about 'carbon capture' often involve injecting CO2 into limestone formations to store it permanently. In these contexts, the word is associated with global health and scientific innovation.

'The regional water authority warned that the limestone aquifer is reaching critically low levels due to the drought,' the news anchor reported.

Travel and tourism is another sector where 'limestone' is frequently heard. Tour guides in places like the Yucatan Peninsula in Mexico or the caves of Kentucky will use the word constantly. They will explain how the 'limestone bedrock' allowed for the formation of cenotes or how the 'limestone walls' of the cave were decorated with stalactites. For a traveler, the word becomes synonymous with adventure and natural wonder.

In Agriculture: Farmers and gardeners often talk about 'adding lime' to their soil, which is simply the colloquial way of saying they are using pulverized limestone.

The documentary narrator explained how the limestone plateau was uplifted by tectonic forces millions of years ago.

'You'll need a special drill bit to get through that limestone foundation,' the plumber advised the homeowner.

The local museum features an exhibit on the limestone industry that once thrived in this valley.

In Everyday Life: You might even hear it in a conversation about cleaning, as people discuss how to remove 'limescale' (calcium deposits) from their kettles.

The architect insisted on using Indiana limestone for the university's new library facade.

From the rugged outdoors to the refined world of architecture and the practical world of farming, 'limestone' is a word that bridges many different fields. Hearing it usually signals a discussion about durability, natural history, or chemical balance. It is a word that carries the weight of geological time and the utility of modern engineering.

Despite its ubiquity, 'limestone' is often the subject of several common linguistic and conceptual errors. One of the most frequent mistakes is confusing limestone with 'cement' or 'concrete.' While limestone is a primary ingredient in cement, they are not the same thing. Cement is a manufactured powder, and concrete is a mixture of cement, water, and aggregates (which might include crushed limestone). Saying 'the sidewalk is made of limestone' is usually technically incorrect unless it is paved with actual stone slabs.

Limestone vs. Marble: Many people use these terms interchangeably, but they are geologically distinct. Marble is 'metamorphosed' limestone—it has been changed by heat and pressure.

Another common error involves the word 'lime.' In casual conversation, people often say 'lime' when they mean 'limestone.' While related, 'lime' (calcium oxide) is a chemical product derived from heating limestone. If a gardener says they are 'adding limestone' to their soil, they are likely using crushed rock. If they say they are 'adding lime,' they might be using a more caustic chemical product. Using the wrong term in a technical or safety-sensitive context can lead to confusion or even injury.

Incorrect: 'The volcanic eruption produced large amounts of limestone.' (Limestone is sedimentary, not volcanic/igneous).

Spelling is also a minor but persistent issue. Because of the 'i' and 'e,' some learners mistakenly spell it 'limestone' (correct) as 'limestome' or 'limston.' It is a compound word: 'lime' + 'stone.' Remembering this origin helps with both spelling and understanding. Another conceptual mistake is assuming all limestone is white. While many famous limestones are light-colored, it can actually range from white to grey, yellow, and even black, depending on the impurities (like iron or organic matter) present during its formation.

The 'Hard Water' Confusion: People often blame 'limestone' for white spots on their dishes. While limestone bedrock causes the hard water, the spots themselves are 'calcium deposits' or 'limescale.'

Incorrect: 'The limestone was formed from cooling lava.' (Lava forms igneous rocks like basalt, not limestone).

Correct: 'The limestone was formed from the accumulation of marine shells over millions of years.'

Mistake: 'The jeweler set the diamond in a limestone ring.' (Limestone is too soft and porous for fine jewelry).

Grammar Tip: Remember that 'limestone' is usually an uncountable mass noun. You don't say 'a limestone' unless you mean 'a type of limestone.'

Correct: 'The area is known for its extensive limestone deposits.'

Avoiding these mistakes—confusing it with concrete, marble, or volcanic rock—will significantly improve your geological and technical literacy. Understanding that limestone is a sedimentary, biological product helps anchor the word in its correct scientific and practical context.

When discussing limestone, it is helpful to know related terms that can provide more precision or variety in your writing. The most direct geological relative is 'dolostone' (or dolomite). While limestone is primarily calcium carbonate, dolostone contains magnesium as well. They look very similar, and in casual conversation, 'limestone' is often used for both, but a geologist will distinguish between them. Another close relative is 'chalk.' Chalk is actually a very pure, soft, white form of limestone made from the microscopic shells of marine plankton. Using 'chalk' instead of 'limestone' when describing the White Cliffs of Dover is more precise.

Travertine: This is a form of limestone deposited by mineral springs, especially hot springs. It has a fibrous or concentric appearance and is very popular in modern architecture.

In the world of construction, 'calcium carbonate' is the chemical alternative. If you are reading a technical data sheet for paint or plastic, you might see 'calcium carbonate filler' instead of 'crushed limestone.' In architecture, 'freestone' is an interesting alternative. This term refers to any stone (often limestone or sandstone) that can be cut easily in any direction without splitting. Using 'freestone' emphasizes the stone's workability rather than its chemical makeup.

While the building's core was made of brick, the exterior was clad in elegant travertine, a specialized form of limestone.

If you are looking for a more general term, 'sedimentary rock' is the category limestone belongs to. If you aren't sure if a rock is limestone, sandstone, or shale, 'sedimentary rock' is a safe, broader choice. Conversely, if you want to be more specific about its appearance, you might use 'karst' to describe the landscape it creates. Instead of saying 'a limestone area,' saying 'a karst landscape' immediately tells the reader to expect caves and sinkholes.

Comparison: Limestone vs. Sandstone: Limestone is carbonate-based and reacts with acid; sandstone is silicate-based and generally does not. Limestone is often smoother and denser.

The artist preferred chalk for temporary sketches, unaware that it was geologically a form of limestone.

The driveway was covered in dolomite gravel, which is slightly harder and more resistant to acid than pure limestone.

The canyon walls were a mix of shale and limestone, creating a striped effect in the sunlight.

Tufa: Not to be confused with 'tuff' (volcanic), tufa is a porous limestone formed by the precipitation of carbonate minerals from ambient temperature water.

The ancient Roman aqueducts were often lined with calcium carbonate deposits from the hard water they carried.

Understanding these alternatives—from the technical 'calcium carbonate' to the specific 'travertine' or 'chalk'—allows you to tailor your language to the specific needs of your conversation or document. Whether you are aiming for scientific accuracy or architectural flair, knowing the 'limestone family' is a valuable linguistic asset.

How Formal Is It?

격식체

중립

비격식체

Child friendly

속어

재미있는 사실

Despite the name, limestone has nothing to do with the citrus fruit 'lime.' The fruit's name comes from the Arabic 'līmah,' while the rock's name comes from an ancient Germanic root meaning 'glue' or 'paste.'

발음 가이드

UK /ˈlaɪm.stəʊn/

US /ˈlaɪm.stoʊn/

The primary stress is on the first syllable: LIME-stone.

라임이 맞는 단어

rhyme-stone chime-stone time-stone grime-stone prime-stone sublime-stone slime-stone any-stone

자주 하는 실수

Pronouncing 'stone' with a short 'o' like 'on'.
Adding an extra syllable, sounding like 'lime-a-stone'.
Mumbling the 'm' in 'lime', making it sound like 'line-stone'.
Over-emphasizing the 'e' at the end of 'lime'.
Swapping the 's' and 't' sounds.

난이도

독해 3/5

The word itself is simple, but it often appears in complex geological or industrial texts.

쓰기 2/5

Easy to spell and use, though learners must remember it's usually uncountable.

말하기 2/5

Pronunciation is straightforward with no difficult consonant clusters.

듣기 2/5

Clear, distinct syllables make it easy to recognize in speech.

다음에 무엇을 배울까

선수 학습

rock stone ocean shell build

다음에 배울 것

sedimentary calcium fossil erosion cement

고급

lithification karst diagenesis calcite carbonation

알아야 할 문법

Mass Nouns vs. Count Nouns

Use 'limestone' for the material (mass) and 'limestones' for types (count).

Attributive Nouns

Limestone can act as an adjective: 'limestone wall', 'limestone floor'.

Passive Voice in Process Descriptions

Limestone 'is formed' (passive) by the accumulation of shells.

Compound Noun Formation

Limestone is a closed compound: lime + stone.

Prepositional Phrases of Composition

Use 'made of' or 'composed of' limestone.

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수준별 예문

The big rock is limestone.

La grande roche est du calcaire.

Simple subject-verb-complement structure.

Is this wall made of limestone?

Ce mur est-il fait de calcaire ?

Question form using 'is'.

Limestone is often white.

Le calcaire est souvent blanc.

Use of the adverb 'often'.

I found a fossil in the limestone.

J'ai trouvé un fossile dans le calcaire.

Past tense of 'find'.

The cave has limestone walls.

La grotte a des parois en calcaire.

Limestone used as an adjective (attributive noun).

They use limestone to build roads.

Ils utilisent du calcaire pour construire des routes.

Present simple for general facts.

Limestone comes from the ocean.

Le calcaire vient de l'océan.

Preposition 'from' showing origin.

This limestone is very soft.

Ce calcaire est très tendre.

Adjective 'soft' describing the noun.

Many old houses were built with limestone blocks.

Beaucoup de vieilles maisons ont été construites avec des blocs de calcaire.

Passive voice 'were built'.

The farmer put limestone on his field.

L'agriculteur a mis du calcaire sur son champ.

Past simple of 'put'.

Limestone is a type of sedimentary rock.

Le calcaire est un type de roche sédimentaire.

Noun phrase 'type of'.

You can see layers in the limestone cliff.

On peut voir des couches dans la falaise de calcaire.

Modal verb 'can' for possibility.

The water in this area is hard because of the limestone.

L'eau dans cette région est dure à cause du calcaire.

Phrase 'because of' showing cause.

We visited a famous limestone cave yesterday.

Nous avons visité une célèbre grotte de calcaire hier.

Past simple with time marker 'yesterday'.

Limestone is made of old shells.

Le calcaire est fait de vieilles coquilles.

Passive construction 'is made of'.

Don't drop that limestone; it might break.

Ne fais pas tomber ce calcaire ; il pourrait se casser.

Imperative 'don't drop' and modal 'might'.

The Great Pyramid was originally covered in polished limestone.

La Grande Pyramide était à l'origine recouverte de calcaire poli.

Adverb 'originally' modifying the verb.

Acid rain can slowly dissolve limestone buildings.

Les pluies acides peuvent dissoudre lentement les bâtiments en calcaire.

Use of 'dissolve' as a transitive verb.

The region is famous for its dramatic limestone landscape.

La région est célèbre pour son paysage calcaire spectaculaire.

Adjective 'dramatic' describing the landscape.

Limestone is an essential ingredient in the production of cement.

Le calcaire est un ingrédient essentiel dans la production de ciment.

Noun phrase 'essential ingredient'.

Geologists found evidence of ancient coral reefs in the limestone.

Les géologues ont trouvé des preuves d'anciens récifs coralliens dans le calcaire.

Plural noun 'geologists' as the subject.

The water carved deep channels into the soft limestone.

L'eau a creusé de profonds canaux dans le calcaire tendre.

Verb 'carve' used metaphorically for erosion.

Most limestone is formed from the remains of marine organisms.

La majeure partie du calcaire est formée à partir des restes d'organismes marins.

Determiner 'most' used with an uncountable noun.

We decided to use limestone tiles for the new bathroom floor.

Nous avons décidé d'utiliser des carreaux de calcaire pour le nouveau sol de la salle de bain.

Verb 'decide' followed by an infinitive.

The dissolution of limestone creates unique geological features like sinkholes.

La dissolution du calcaire crée des caractéristiques géologiques uniques comme des dolines.

Noun 'dissolution' derived from the verb 'dissolve'.

Limestone acts as a natural filter for groundwater in many aquifers.

Le calcaire agit comme un filtre naturel pour les eaux souterraines dans de nombreux aquifères.

Verb 'act as' to describe a function.

The cathedral's facade was meticulously restored using local limestone.

La façade de la cathédrale a été méticuleusement restaurée en utilisant du calcaire local.

Adverb 'meticulously' modifying the passive verb.

Limestone is highly susceptible to chemical weathering in urban environments.

Le calcaire est très sensible à l'altération chimique dans les environnements urbains.

Adjective 'susceptible' followed by the preposition 'to'.

The quarry produces thousands of tons of crushed limestone every year.

La carrière produit des milliers de tonnes de calcaire concassé chaque année.

Present simple for repeated industrial actions.

Carbonate minerals are the primary constituents of limestone.

Les minéraux carbonatés sont les principaux constituants du calcaire.

Technical noun 'constituents'.

The limestone plateau provides a unique habitat for rare plant species.

Le plateau calcaire offre un habitat unique pour des espèces végétales rares.

Compound noun 'limestone plateau'.

Archaeologists analyzed the limestone tools used by the ancient inhabitants.

Les archéologues ont analysé les outils en calcaire utilisés par les anciens habitants.

Past participle 'used' acting as an adjective.

The intricate karst topography is a direct result of limestone's solubility.

La topographie karstique complexe est le résultat direct de la solubilité du calcaire.

Technical term 'karst topography'.

Limestone serves as a significant carbon sink, sequestering CO2 over eons.

Le calcaire sert de puits de carbone important, séquestrant le CO2 pendant des millénaires.

Participial phrase 'sequestering CO2' explaining the result.

The purity of the limestone deposit makes it ideal for chemical manufacturing.

La pureté du gisement de calcaire le rend idéal pour la fabrication chimique.

Noun 'purity' as the subject.

Tectonic uplift exposed the ancient limestone strata to the elements.

Le soulèvement tectonique a exposé les anciennes strates de calcaire aux éléments.

Technical term 'strata' (plural of stratum).

The industrial calcination of limestone is a major contributor to global emissions.

La calcination industrielle du calcaire est un contributeur majeur aux émissions mondiales.

Gerund 'calcination' used as a noun.

The sculptor exploited the fine-grained nature of the limestone to achieve detail.

Le sculpteur a exploité la nature à grain fin du calcaire pour obtenir des détails.

Verb 'exploit' meaning to make full use of.

Limestone aquifers are particularly vulnerable to surface contamination.

Les aquifères calcaires sont particulièrement vulnérables à la contamination de surface.

Adverb 'particularly' modifying the adjective 'vulnerable'.

The transition from limestone to marble occurs under intense metamorphic pressure.

La transition du calcaire au marbre se produit sous une pression métamorphique intense.

Noun 'transition' followed by 'from... to...'.

The lithification of calcareous ooze is the primary genesis of marine limestone.

La lithification de la vase calcaire est la genèse primaire du calcaire marin.

Highly technical vocabulary (lithification, calcareous, ooze).

Limestone's susceptibility to carbonation facilitates the development of speleothems.

La sensibilité du calcaire à la carbonatation facilite le développement des spéléothèmes.

Use of 'facilitates' and 'speleothems' (cave formations).

The geochemical signature of the limestone reveals much about the paleo-climate.

La signature géochimique du calcaire en dit long sur le paléoclimat.

Abstract noun 'signature' used in a scientific context.

Anthropogenic acid deposition has accelerated the degradation of limestone heritage sites.

Le dépôt d'acide anthropique a accéléré la dégradation des sites du patrimoine en calcaire.

Complex subject 'Anthropogenic acid deposition'.

The diagenetic history of the limestone can be traced through its crystalline structure.

L'histoire diagénétique du calcaire peut être retracée à travers sa structure cristalline.

Technical adjective 'diagenetic'.

Limestone-derived soils, known as rendzinas, are characterized by their high alkalinity.

Les sols dérivés du calcaire, connus sous le nom de rendzines, se caractérisent par leur forte alcalinité.

Appositive phrase 'known as rendzinas'.

The sheer verticality of the limestone cliffs is a testament to their structural integrity.

La verticalité pure des falaises de calcaire est un témoignage de leur intégrité structurelle.

Abstract noun 'verticality' and 'testament to'.

Biogenic limestone serves as a proxy for understanding ancient marine biodiversity.

Le calcaire biogène sert de mandataire pour comprendre la biodiversité marine ancienne.

Scientific use of 'proxy'.

자주 쓰는 조합

limestone cliff

crushed limestone

limestone cave

limestone deposit

limestone quarry

limestone bedrock

limestone pavement

fossiliferous limestone

limestone building

limestone soil

자주 쓰는 구문

limestone aggregate

— Crushed limestone used in construction. It provides a stable base for roads and concrete.

The contractor ordered ten tons of limestone aggregate for the foundation.

limestone plateau

— A large, flat area of land elevated above the surroundings, made of limestone. These areas often have unique ecosystems.

The limestone plateau was home to several rare species of orchids.

limestone formation

— A specific geological structure made of limestone. It can refer to a layer of rock or a specific shape like a tower.

The unusual limestone formations attracted tourists from all over the world.

agricultural limestone

— Pulverized limestone used to improve soil quality. It helps neutralize acidity in farmland.

The farmer applied agricultural limestone to his fields before planting the corn.

limestone blocks

— Large, rectangular pieces of limestone used for building. This was the primary way ancient monuments were constructed.

The workers hauled the heavy limestone blocks up the ramp.

limestone countertop

— A kitchen or bathroom surface made from a slab of limestone. It is valued for its natural, matte look.

She chose a limestone countertop for its warm, earthy tones.

limestone aquifer

— An underground layer of limestone that holds water. These are important sources of drinking water.

The limestone aquifer provides water for the entire county.

limestone dust

— Fine particles of limestone created during crushing or carving. It can be a respiratory hazard if inhaled.

The workers wore masks to protect themselves from the limestone dust.

limestone facing

— A thin layer of limestone applied to the exterior of a building. It gives the appearance of a solid stone structure.

The modern office building had a sleek limestone facing.

limestone sinkhole

— A hole in the ground caused by the dissolution of limestone bedrock. They can appear suddenly and be dangerous.

A limestone sinkhole opened up in the middle of the parking lot.

자주 혼동되는 단어

limestone vs Cement

Limestone is a raw material; cement is the processed powder made from it.

limestone vs Marble

Marble is limestone that has been changed by heat and pressure; it is harder and less porous.

limestone vs Sandstone

Sandstone is made of sand (silica), while limestone is made of calcium carbonate.

관용어 및 표현

"written in limestone"

— A play on 'written in stone,' suggesting something is semi-permanent but could be eroded or changed over time. It is not a standard idiom but used creatively.

Our plans are written in limestone—solid for now, but we might change them if things get difficult.

informal/creative

"as old as the limestone"

— Extremely old; referring to the millions of years it takes for limestone to form. Used to emphasize great age.

That old tradition is as old as the limestone in these hills.

literary

"heart of limestone"

— A person who seems cold and hard but can be 'dissolved' or softened by persistent kindness. A variation of 'heart of stone.'

He has a heart of limestone; you just need to find the right way to reach him.

poetic

"limestone logic"

— Logic that seems solid but has 'holes' in it, like a cave-filled limestone rock. Used to describe a flawed argument.

His limestone logic didn't hold up under close questioning.

informal

"to lime the way"

— To prepare the ground or make a situation easier, derived from adding lime to soil to help plants grow. Not common but used in agricultural metaphors.

His early research helped lime the way for the new medical breakthrough.

metaphorical

"solid as limestone"

— Very dependable and strong, though perhaps not as indestructible as granite. Used to describe character or foundations.

Their friendship is as solid as limestone.

informal

"bleeding limestone"

— A term used by quarry workers or geologists to describe water seeping out of rock. Can be used metaphorically for a difficult situation.

Getting a straight answer out of him was like bleeding limestone.

jargon/informal

"limestone walls have ears"

— A variation of 'walls have ears,' often used in the context of old stone buildings or castles. Suggests that secrets aren't safe.

Be careful what you say in the cellar; these limestone walls have ears.

informal

"under the limestone"

— Hidden or buried, often referring to things that are long forgotten or geological in nature. Can mean 'underground.'

The secret was buried deep under the limestone.

literary

"limestone breath"

— A descriptive term for the cool, damp, mineral-smelling air that comes out of a cave. Used in travel writing.

As we approached the cave entrance, we felt the limestone breath of the mountain.

descriptive

혼동하기 쉬운

limestone vs Lime

Shortened version of the word.

Limestone is the rock; lime usually refers to the chemical calcium oxide produced from it.

We added lime to the soil, but the wall is built of limestone.

limestone vs Chalk

Both are white and made of calcium carbonate.

Chalk is a specific, very soft and porous variety of limestone.

The teacher used chalk on the board, but the school was built of limestone.

limestone vs Concrete

Both are grey/white building materials.

Concrete is a man-made mixture; limestone is a natural rock.

The modern bridge is concrete, but the old one is limestone.

limestone vs Gypsum

Both are soft, light-colored sedimentary minerals.

Gypsum is calcium sulfate; limestone is calcium carbonate.

Drywall is made of gypsum, not limestone.

limestone vs Quartzite

Both can be light-colored building stones.

Quartzite is extremely hard and made of silica; limestone is softer and made of carbonate.

The countertop is quartzite, so it won't etch like limestone.

문장 패턴

This is [limestone].

This is limestone.

It is made of [limestone].

It is made of limestone.

[Limestone] is used for [purpose].

Limestone is used for building roads.

The [noun] is rich in [limestone].

The soil is rich in limestone.

Due to its [property], [limestone] [action].

Due to its solubility, limestone erodes quickly.

The [process] of [limestone] [result].

The lithification of limestone preserves fossils.

A [limestone] [noun] was found.

A limestone statue was found.

[Limestone] plays a role in [system].

Limestone plays a role in the carbon cycle.

어휘 가족

명사

동사

형용사

사용법

frequency

Common in geology, construction, and nature-related topics.

자주 하는 실수

The volcano erupted and limestone came out. → The volcano erupted and basalt (or lava) came out.
Limestone is a sedimentary rock formed in water, not an igneous rock formed from volcanic activity.
I need to buy a limestone for my garden. → I need to buy some limestone for my garden.
Limestone is usually an uncountable mass noun. You don't use 'a' unless you mean a specific type.
The limestone was very hard and didn't scratch. → The granite was very hard and didn't scratch.
Limestone is relatively soft (3 on the Mohs scale) and can be easily scratched by a steel blade.
Limestone is made of sand. → Limestone is made of calcium carbonate (shells/coral).
Sandstone is made of sand. Limestone is made of biological or chemical carbonate material.
The limestone turned into granite over time. → The limestone turned into marble over time.
Under heat and pressure, limestone metamorphoses into marble, not granite.

팁

Learn the chemical name

Remembering 'calcium carbonate' will help you understand why limestone reacts with acid and why it's used in things like antacids and toothpaste.

Look for the layers

When you see a rocky cliff, look for horizontal lines. These are sedimentary layers, a classic sign that the rock might be limestone or sandstone.

Seal your stone

If you have limestone in your home, always use a sealer. Because limestone is porous, it acts like a sponge for liquids and stains.

Identify old buildings

Many historic government buildings and cathedrals are made of limestone because it was easy for ancient masons to carve intricate details.

The Vinegar Test

You can test if a rock is limestone at home by putting a drop of vinegar on it. If it fizzes, it's a carbonate rock like limestone!

Cave Safety

When exploring limestone caves, never touch the formations (stalactites). The oils from your skin can stop the limestone from growing.

Test your soil first

Don't just add limestone to your garden. Test the pH first; if your soil is already alkaline, adding limestone could harm your plants.

Use descriptive adjectives

Words like 'weathered', 'porous', 'fossil-rich', and 'honey-colored' pair perfectly with limestone to create vivid imagery.

Visit Karst regions

If you love dramatic landscapes, search for 'karst' travel destinations. These are always limestone-based and offer the best caves and cliffs.

Lime vs. Lemon

Don't let the name confuse you! Limestone is named after 'glue' (mortar), not the green fruit. They have completely different linguistic roots.

암기하기

기억법

Think of a 'LIME' (the fruit) sitting on a 'STONE.' Imagine the lime juice slowly dissolving the stone. This helps you remember the name and the fact that limestone dissolves in acid!

시각적 연상

Visualize the Great Pyramids of Giza. They were once covered in smooth, white limestone. Imagine the bright white stone shining in the desert sun.

Word Web

Ocean Shells Caves Cement Fossils White Acid Building

챌린지

Try to find three things in your house or neighborhood that use limestone. Hint: Look at sidewalks, old buildings, or even your toothpaste ingredients!

어원

The word 'limestone' is a compound of the Old English 'līm' (meaning sticky substance, birdlime, or mortar) and 'stān' (stone). The 'lime' part refers to the material's use in making mortar and cement since ancient times. It has been used in English since the 14th century.

원래 의미: A stone from which lime (for mortar) is made.

Germanic (English)

문화적 맥락

No major sensitivities, but be aware that limestone quarrying can be a controversial environmental issue in some local communities.

In the UK, limestone is associated with the 'Peak District' and 'The Burren' (Ireland). In the US, it's associated with 'Indiana Limestone' and the caves of Kentucky.

The Great Pyramid of Giza (casing stones) The Empire State Building (facade) The White Cliffs of Dover (chalk limestone)

실생활에서 연습하기

실제 사용 상황

Geology Class

sedimentary rock
calcium carbonate
marine fossils
karst topography

Construction Site

crushed aggregate
building stone
cement production
stone cladding

Gardening/Farming

soil acidity
adding lime
pH balance
pulverized stone

Tourism/Hiking

limestone caves
white cliffs
rock formations
ancient fossils

History/Archaeology

ancient monuments
stone carving
quarrying techniques
limestone blocks

대화 시작하기

"Did you know that the Great Pyramids were once covered in bright white limestone?"

"Have you ever explored a limestone cave and seen the stalactites?"

"What do you think is the best material for a kitchen countertop: granite or limestone?"

"I heard that limestone is actually made of ancient sea shells. Isn't that wild?"

"Do you have hard water at your house? It's usually caused by limestone bedrock."

일기 주제

Imagine you are a piece of limestone. Describe your journey from a sea shell to a skyscraper.

Write about a time you visited a cave or a rocky cliff. What did the stone feel and look like?

How has limestone shaped human history? Think about buildings, roads, and monuments.

If you could carve anything out of a block of limestone, what would it be and why?

Research a famous limestone landmark (like the White Cliffs of Dover) and write a short travel guide for it.

자주 묻는 질문

10 질문

Limestone is considered a relatively soft rock compared to igneous rocks like granite. On the Mohs scale of mineral hardness, it usually ranks around a 3. This makes it easy to carve for statues and buildings, but also means it can wear down over time due to weather and foot traffic.

Pure limestone is made of calcium carbonate, which is naturally white or light grey. However, limestone can come in many colors like yellow, brown, or even black if it contains impurities like iron oxide, clay, or organic matter during its formation.

The easiest way to identify limestone is the 'acid test.' If you drop a small amount of weak acid (like vinegar) on limestone, it will fizz or bubble. This happens because the acid reacts with the calcium carbonate in the rock to release carbon dioxide gas.

Yes, limestone is popular for kitchen countertops and floors because of its natural beauty. However, because it is porous and sensitive to acid, it can stain easily from things like lemon juice or wine. It requires regular sealing to stay in good condition.

Limestone is found all over the world, but some of the most famous deposits are in the Midwestern United States (Indiana), Southern England (the Cotswolds), and throughout the Mediterranean region. It covers about 10% of the Earth's land surface.

Yes, limestone is one of the best rocks for finding fossils. Because it forms from the accumulation of marine life, it often contains perfectly preserved shells, coral, and even fish. Some types of limestone, like coquina, are made almost entirely of visible shells.

Limestone caves are formed through a process called 'carbonation.' Rainwater picks up carbon dioxide from the air and soil, becoming a weak acid. As this water flows through cracks in the limestone bedrock, it slowly dissolves the rock, creating large underground spaces over thousands of years.

Limestone is the natural rock found in the ground. 'Lime' usually refers to 'quicklime' (calcium oxide) or 'slaked lime' (calcium hydroxide), which are chemical products created by heating limestone in a kiln. Lime is used in industrial processes and agriculture.

Limestone itself is a natural material, but the process of quarrying it can damage local ecosystems. Additionally, the production of cement from limestone releases a large amount of carbon dioxide into the atmosphere, making it a concern for climate change.

Farmers use crushed limestone (often called 'aglime') to neutralize acidic soil. Most crops grow best in soil that is slightly neutral. Limestone raises the pH level of the soil, which helps plants absorb nutrients more effectively and improves overall crop yield.

무료 가입하고 팁과 노트 보기