calcareous material definition of calcareous

calcareous tubeworms - Encyclopedia of Life

Calcareous Tubeworm Habitats The environments in which many calcareous tubeworms species are known to live. Select an environment to see its calcareous tubeworms species checklist.


ASC - CALCAROSOLS

Definition Soils that are calcareous throughout the solum - or calcareous at least directly below the A1 or Ap horizon, or a depth of 0.2 m (whichever is shallower). Carbonate accumulations must be judged to be pedogenic 1 (either current or relict), and the soils do not have clear or abrupt textural B horizons .


Limestone & Other Calcareous Materials-2882015

calcareous material used by industry is 'chalk', a white, extremely fine-grained, usually soft and friable variety of limestone, composed wholly or largely of microscopic small remains of foraminifera and broken shelly fragments; 'kankar', irregular nodules and concretions of impure calcium carbonate of …


What is a Calcareous Coating? - Definition from Corrosionpedia

Oct 15, 2017· Normally, materials used underwater are made of steel protected with cathodic protection. Steel is a relatively cheap material. In addition to lowering the immune state potential, use of cathodic protection leads to precipitation of calcareous deposit, due to increased interfacial pH.


Calcareous Soil: Formation, Characteristics and Management

Characteristics of Calcareous Soil: (i) Calcareous soil mainly contains calcium carbonate in free form and magnesium carbonate may remain present in small quantity. (ii) There is effervescence when calcareous soils come in contact with the acid. (iii) Soil colloids contain about 90 per cent calcium and magnesium carbonate as adsorbed bases.


Calcareous deposit - definition of calcareous deposit by ...

Define calcareous deposit. calcareous deposit synonyms, calcareous deposit pronunciation, calcareous deposit translation, English dictionary definition of calcareous deposit. v. de·pos·it·ed, de·pos·it·ing, de·pos·its v. tr. 1.


Calcareous - 25 definitions - Encyclo

calcareous Formed of calcium carbonate or magnesium carbonate by biological deposition or inorganic precipitation in sufficient quantities to effervesce carbon dioxide visibly when treated with cold 0.1 normal hydrochloric acid.


Petropedia - What is Calcareous? - Definition from Petropedia

Normally, materials used underwater are made of steel protected with cathodic protection. Steel is a relatively cheap material. In addition to lowering the immune state potential, the use of cathodic protection leads to precipitation of calcareous deposit, due to increased interfacial pH.


calcareous marl - English definition, grammar ...

Building materials (non-metallic), bricks, building ceramics, building stone, structures, not of metal, calcareous marl, slates, sand, gravel, paving stones, stone for decorative purposes tmClass The oldest lands are situated to the north and south of the production area and consist of arenaceous and calcareous marl from the Miocene, the so ...


Calcareous | Definition of Calcareous by Merriam-Webster

Calcareous definition is - resembling calcite or calcium carbonate especially in hardness.


Calcareous cement - CAMEO

Description. Any cement that contains Calcium carbonate (Bucher 1996). Powdered Limestone or Chalk is calcined then mixed with Clay, Sand, and water to form a rapid hardening material.Examples are Hydraulic cement, Maya cement, Natural cement, Portland cement, Roman cement, and Slate cement.. Synonyms and Related Terms. ciment calcaire (Fr.); Additional Information


CALCAREOUS English Definition and Meaning | Lexico.com

'Rendzina - a shallow calcareous soil that develops where limestone/chalk is the parent material.' 'Based upon the presence of calcareous algae, benthic foraminifera and nudists, a lagoonal environment has been suggested for the upper part of the Ocozocuautla Formation.'


(PDF) Physical and mechanical properties of calcareous ...

Jun 13, 2021· Calcareous soil is widely distributed throughout tropical areas. Due to its unique sedimentary environment and soil behaviors, severe engineering …


Calcareous infiltration | definition of calcareous ...

calcareous infiltration: [ in″fil-tra´shun ] 1. the pathological accumulation in tissue or cells of substances not normal to them or in amounts in excess of the normal. 2. infiltrate (def. 2). 3. the deposition of a solution directly into tissue; see infiltration anesthesia . adipose infiltration fatty infiltration . …


Calcareous Nannofossils from Paleogene Deposits in the ...

Calcareous nannofossil samples were heated in a convec-tion oven overnight at a temperature of 50 degrees Celsius (°C) in order to remove all residual water. This drying process reduces the chance of calcareous nannofossil dissolution when the unprocessed …


Calcareous Meaning | Best 4 Definitions of Calcareous

What does calcareous mean? Composed of, containing, or characteristic of calcium carbonate, calcium, or limestone; chalky. (adjective)


Calcareous sinter - definition of Calcareous sinter by The ...

Define Calcareous sinter. Calcareous sinter synonyms, Calcareous sinter pronunciation, Calcareous sinter translation, English dictionary definition of Calcareous sinter. a loose banded variety of calcite formed by deposition from lime-bearing waters; calcareous tufa; travertine. See also: Sinter Webster's Revised Unabridged...


Calcareous degeneration | definition of calcareous ...

calcareous degeneration: in a precise sense, not a degenerative process per se, but the deposition of insoluble calcium salts in tissue that has degenerated and become necrotic, as in dystrophic calcification.


Calcareous soils | FAO SOILS PORTAL | Food and Agriculture ...

Calcareous soils have often more than 15% CaCO 3 in the soil that may occur in various forms (powdery, nodules, crusts etc…). Soils with high CaCO 3 belong to the Calcisols and related calcic subgroups of other soils. They are relatively widespread in the drier areas of the earth.. The potential productivity of calcareous soils is high where adequate water and nutrients can be supplied.


Calcareous | Article about calcareous by The Free Dictionary

The suitable criteria (Arain et al., 2014) for cotton cultivation was characterized by the factors: canal command area; soil pH (6.6-8.4); soil chemical properties classes (Acid soils: slightly acid, neutral soils: non-calcareous to slight calcareous, mildly alkaline soils: non-calcareous to strongly calcareous, moderately alkaline soils: non-calcareous to strongly calcareous); mean maximum ...


Calcareous Definition & Meaning | Dictionary.com

Calcareous definition, of, containing, or like calcium carbonate; chalky: calcareous earth. See more.


Calcareous Metamorphic Rocks Rocks Types of Calcareous ...

• Calcareous rocks are predominantly carbonates, usually limestone or dolostone • Typically form in a stable continental shelf environment along a passive margin • They may be pure carbonate, or they may contain variable amounts of other precipitates (such as chert or hematite) or …


calcareous - definition and meaning

Another concern is what the acid might do to the specific algae called calcareous coralline algae that holds the coral reefs together and act as a substrate or base upon which corals can grow.. ScienCentral. Her work showed that carrizaleños were highly skilled builders, who used local resources (such as calcareous stone) for construction.. Archaeology and Architecture « Interactive Dig El ...


Cement | Definition, Chemical Analysis | Composition and ...

Oct 09, 2021· Composition of ordinary cement: There are two basic ingredients of ordinary cement, namely, argillaceous and calcareous. In argillaceous materials, clay is predominant and in calcareous materials, calcium carbonate is predominant. The following is a general chemical analysis of good quality ordinary cement:


Calcareous Soil | Encyclopedia.com

Jun 11, 2018· Calcareous soil. A calcareous soil is soil that has calcium carbonate (CaCO 3) in abundance.If a calcareous soil has hydrochloric acid added to it, the soil will effervesce and give off carbon dioxide and form bubbles because of the chemical reaction. Calcareous soils are most often formed from limestone or in dry environments where low rainfall prevents the soils from being leached …


What is Calcareous Soil? - Definition from WineFrog

Definition - What does Calcareous Soil mean? A calcareous soil is a soil that has high levels of both magnesium carbonate and calcium that reduce acidity in the soil. Calcareous soil can have a coarse to fine texture as well as differing levels of sand, silt or clay.


Calcareous Ooze | Encyclopedia.com

May 14, 2018· Calcareous ooze. Calcareous ooze is the general term for layers of muddy, calcium carbonate (CaCO 3) bearing soft rock sediment on the seafloor. Of all the distinct types of veneers covering the Earth's crust — be it soil, sediment, snow, or ice — none are more widespread than red-clay and calcareous ooze. Only a small proportion of calcareous ooze is precipitated inorganically.


OCE1001 Chapter 4 Flashcards | Quizlet

OCE1001 Chapter 4. STUDY. PLAY. Marine sediments that originate in the warm tropical surface ocean would create deposits in the deep sea composed primarily of ___________. calcium carbonate. A. siliceous ooze. B. quartz sand. C. rock fragments. D. clay.


Their properties and chemical processes when applied to soil.

May 25, 2012· soluble Ca2+ in calcareous soils only. In all soils, regardless of pH, gypsum is a good Ca2+ additive. Calcium sulfate anhydrite will also supply Ca 2+, but it will dissolve more slowly than gypsum. With either gypsum or calcium sulfate anhydrite, it is important to know the composition of the material you select. DR. JIM WALWORTH, [email protected]


Calcareous Soil - an overview | ScienceDirect Topics

Calcareous soils generally have a high carbonate content of the micromass, occurring in the form of micritic or microsparitic crystals. The b-fabric is crystallitic (Bullock et al., 1985), due to the bright small punctuations caused by the optical anisotropy of the small crystals.This fabric has also been termed K-fabric (Gile et al., 1965), crystic plasmic fabric (Brewer, 1964; Sehgal ...


Calcareous Alga - an overview | ScienceDirect Topics

Calcareous nannofossils. Calcareous nannofossils ( see FOSSIL PLANTS | Calcareous Algae) as a group are composed of several forms, such as coccoliths, nannoconids, and discoasters. They range in size between 0.25 and 30 μm, and, due to this very small size, the number of specimens in fine-grained pelagic sediments can often exceed 1 million cm ...


CALCAREOUS | Definition of CALCAREOUS by Oxford Dictionary ...

'Rendzina - a shallow calcareous soil that develops where limestone/chalk is the parent material.' 'Based upon the presence of calcareous algae, benthic foraminifera and nudists, a lagoonal environment has been suggested for the upper part of the Ocozocuautla Formation.'


Calcareous Tufa | Article about Calcareous Tufa by The ...

Calcareous Tufa. or travertine, porous, cellular rock formed from the precipitation of calcium carbonate from hot or cold springs. It often contains impressions of plants and sometimes the shells of land or freshwater gastropods. It is characterized by a small density (1,400–1,800 kg/m3 ). In the USSR calcareous tufa commonly occurs near ...


Calcareous soil | Article about calcareous soil by The ...

calcareous soil (kălkâr`ēəs), soil formed largely by the weathering of calcareous rocks and fossil shell beds.Different varieties usually contain chalk, marl, and limestone and frequently a large amount of phosphates. They are often very fertile, as in the case of the buckshot soils of the S United States.