The Glossary below is the most recent version as of September 10, 2019. Geology Glossary and Terms. Glossary of soil terms Absorption: Uptake of matter or energy by a substance Acid soil: Soil with a pH value less than 7.0. Shale-- A fine-grained detrital sedimentary rock, formed by the compaction of clay, silt, or mud. Please see the Updates section for more information on any revisions. Additionally, it is nostalgic for me, since in those days I was beginning my education as a geologist, and the presence of the “Glossary” was a source of comfort and amusement at the same time. Silica -- Silicon dioxide, SiO 2 . Here is a glossary of Geological terms. It has a finely laminated structure, which gives it a fissility along which the rock splits readily, especially on weathered surfaces. Datum -- A fixed or assumed point, line, or surface, in relation to which others are determined. A group of plant or animal associations that exist together because of closely similar life patterns, habits, and climate requirements. Bedrock -- The solid rock that underlies gravel, soil, or other surficial material. The Glossary of Geology (GG, 2005) serves as a major source for many glossary terms. Uplift -- A structurally high area in the crust, produced by movements that raise the rocks, as in a broad dome or arch. Iron -- A heavy magnetic malleable and ductile chemically active mineral, the native metallic element Fe. You can search for an entry using this form: endobj Monomictic -- Said of a clastic sedimentary rock composed of a single mineral species. Weathering -- The destructive processes by which rocks are changed on exposure to atmospheric agents at or near the earth's surface, with little or no transport of the loosened or altered material. The fifth edition of the Glossary of Geology contains nearly 40,000 entries, including 3.600 new terms and nearly 13,000 entries with revised definitions from the previous edition. Geology is the scientific study of the Earth, the materials of which it is made, the structure of those materials, and the processes acting upon them. Stress -- In a solid, the force per unit area, acting on any surface within it, and variously expressed as pounds or tons per square inch, or dynes or kilograms per square centimeter. Four kinds may be distinguished: (1) polar deserts, marked by perpetual snow cover and intense cold; (2) middle-latitude deserts, in the basinlike interiors of the continents, such as the Gobi, characterized by scant rainfall and high summer temperatures; (3) trade-wind deserts, notably the Sahara, with negligible precipitation and large daily temperature range; (4) coastal deserts, as in Peru, where there is a cold current on the western coast of a large land mass. The fifth edition of the Glossary of Geology contains nearly 40,000 entries, including 3.600 new terms and nearly 13,000 entries with revised definitions from the previous edition. Glossary of Geological Terms - Free download as PDF File (.pdf), Text File (.txt) or read online for free. endobj Glass -- A state of matter intermediate between the close-packed, highly ordered array of a crystal, and the poorly-packed, highly disordered array of a gas. Highlighted terms in our online content are linked to definitions to assist in the comprehension of the information provided within the text. Permission was granted (letters dated 9/11/85 and 9/22/93) to the USDA-Natural Resource 2. It is closely related to structural geology, but tectonics generally deals with larger features. Commonly gray or white, it has perfect rhombohedral cleavage and reacts readily with cold dilute hydrochloric acid. Algae -- Photosynthetic, almost exclusively GLOSSARY OF GEOLOGIC TERMS *. A body of rock strata that consists dominantly of a certain lithologic type or combination of types. The definitions found in this glossary are from, "The Federal Glossary of Selected Terms: Subsurface-Water Flow and Solute Transport": Department of Interior, U.S. Geological Survey, Office of Water Data Coordination, August 1989. Fracture -- A crack, joint, or other break in rocks. Gypsum -- A widely distributed mineral consisting of hydrous calcium sulfate: CaSO 4- H 2 O. Basalt -- A dark colored igneous rock, commonly extrusive, composed primarily of calcic plagioclase and pyroxene; the fine-grained equivalent of gabbro. .���a 8��p�6r��u�H�;�D�(�3Dr�i'��zp�*lJ�� E�F*g�9�5t'��&���.K4�Aԋ]��@ֱ7�ȝށc�_)�ܹ�.�7�J. Limestone is the most important and widely distributed of the carbonate rocks and is the consolidated equivalent of limy mud, calcareous sand, and/or shell fragments. Sometimes spelled cañon. Suevite -- A grayish or yellowish breccia that is associated with meteorite impact craters and that contains both shock-metamorphosed rock fragments and glassy inclusions that occur typically as aerodynamically-shaped bombs. Soil Science Division staff and NCSS participants are encouraged to propose additions and changes to the glossary for use in pedon descriptions, soil map unit descriptions, and soil survey publications. <>>> Jump to: navigation, search. The terms provided in the IGWS glossary represent key words found in many of our publications and documents. The Greek derivation of the word "geology" refers only to the Earth, but since the beginning of the space age, the field has expanded to include the study of the solid matter of other celestial bodies, such as Mars and the Moon. Tektites average a few grams in weight. It has been used for making arrowheads, jewelery, and art objects. Alluvial Fan -- An outspread, gently sloping mass of alluvium deposited by a stream in an arid or semi-arid region where a stream issues from a narrow canyon onto a plain or valley floor. a graywacke; also, said of the clasts of such a rock. This is approximately the upper limit of size of particle that can show colloidal properties. These bands result from the absorption of certain wavelengths of white light passing through the stone. 1 0 obj Geology Glossary and Terms. Microscope -- An optical instrument that uses a lens or a combination of lenses to produce magnified images of small objects, especially of objects too small to be seen by the unaided eye. PSI, a Nonprofit Corporation 501(c)(3), and an Equal Opportunity/M/F/Vet/Disabled/Affirmative Action Employer.Corporate Headquarters: 1700 East Fort Lowell, Suite 106 * Tucson, AZ 85719-2395 * 520-622-6300 * FAX: 520-622-8060Copyright © 2021 . Permission was granted (letters dated 9/11/85 and 9/22/93) to the USDA-Natural Resource The following 27 pages are in this category, out of 27 total. The Glossary draws its authority from the expertise of the more than 100 geoscientists in many specialties who reviewed definitions and added new terms. Glossary of Terms. Algae -- Photosynthetic, almost exclusively aquatic plants of a large and diverse group, including seaweeds and their fresh-water allies. For water resources information please visit our Oregon Water Science Center Home Page or Oregon Water Science Center Hydrologic Studies Page.. Long considered the … FUNDAMENTALS eBOOK Glossary of Structural Geology Terms - Ministry of Education 2 0 obj Jump to: navigation, search. This type of crater has an uplift that forms in the center due to the earth rebounding from the impact event. Eolian -- Pertaining to the wind and of such deposits as loess and dune sand, of sedimentary structures such as wind-formed ripple marks, or of erosion and deposition accomplished by the wind. Proximal -- 1. Seafriends - Glossary of geological terms Ablation:. See also the rock and soil classification table and the periodic table of elements. Pitchstone -- A volcanic glass with a waxy dull resinous luster. Glossary of geology terms. Acidification: Process whereby soil becomes acid (pH < 7) because acid parent material is present or in regions with high rainfall, where soil leaching occurs. AGI is proud to feature this Fifth REVISED edition of the Glossary of Geology. Tectonics -- A branch of geology dealing with the broad architecture of the outer part of the Earth, that is, the major structural or deformational features and their relations, origin, and historical evolution. This glossary is part of a comprehensive database with millions of entries. *  Most of the terms in this list from the Dictionary of Geological Terms, 3rd Ed., R.L. Glossary Of Geology free download - Geology, Awesome Geology from Space Screen Saver, Glossary, and many more programs They are believed to be of extraterrestrial origin or alternatively the product of large hypervelocity meteorite impacts on terrestrial rocks. Jackson (Eds. Impact melt breccia -- A coarse-grained clastic rock, composed of angular broken rock fragments held together by a mineral cement or a fine-grained matrix of crystallized impact melt that is diagnostic from an impact event. The coloured words are explained elsewhere in this glossary. Bedrock - The solid layer of rock under the loose surface (soil, clay, gravel, sand) of the Earth. 3. More generally, solid fragmental material transported and deposited by wind, water, or ice, chemically precipitated from solution, or secreted by organisms, and that forms in layers in loose unconsolidated form such as sand, mud, or till. It closely resembles a tuff breccia or pumiceous tuff but is of non-volcanic orgin and can be distinguished by the presence of shock-metamorphic effects. Joint -- A surface of fracture or parting in a rock, without displacement; the surface is often plane and may occur with parallel joints to form a joint set.. Limestone -- A sedimentary rock consisting chiefly of the mineral calcite (calcium carbonate, CaCO 3 ), with or without magnesium carbonate. a striking erosional form on the land surface. Sandstone -- A clastic sedimentary rock composed of grains of sand size set in a matrix of silt or clay and more or less firmly united by a cementing material (commonly silica, iron oxide, or calcium carbonate); the consolidated equivalent of sand. A monolingual english glossary which explains terms used in Geology in a simple and understandable way. Breccia -- A coarse-grained clastic rock, composed of angular broken rock fragments held together by a mineral cement or a fine-grained matrix. The definitions are largely based on input from: • ISRM Terminology (1975) • Handbook in Engineering geology and rock mechanics, issued by the Norwegian Rock Mechanics Group (NBG), (2000); The CJKI Glossary of Geology Terms, compiled by The CJK Dictionary Institute (CJKI) in Japan, is a comprehensive resource of Chinese equivalents for English Geology terminology, which provides translators with access to approximately 62,540 terms and their equivalents. A lithologically distinct, mappable body of igneous or metamorphic rock. endobj Comet -- A celestial body, observed only in that part of its orbit that is relatively close to the sun, having a head consisting of a solid nucleus surrounded by a nebulous coma up to 2.4 million kilometers (1.5 million miles) in diameter and an elongated curved vapor tail arising from the coma when sufficiently close to the sun. This indispensable reference tool contains nearly 40,000 entries, including 3,600 new terms and nearly 13,000 entries with revised definitions from the previous edition. This page lists the latest 50 glossary entries. All Rights Reserved. Clast -- An individual constituent, grain, or fragment of a detrital sediment or sedimentary rock, produced by the physical disintegration of a larger rock mass. Glossary of soil terms Absorption: Uptake of matter or energy by a substance Acid soil: Soil with a pH value less than 7.0. Hydrothermal -- Of or pertaining to hot water, to the action of hot water, or to the products of this action, such as a mineral deposit precipitated from a hot aqueous solution; also said to be the solution itself. Delta -- The nearly flat alluvial tract of land at the mouth of a river, commonly forming a triangular or fan-shaped plain resembling the greek letter "delta" in plan view. AGI is proud to feature this Fifth REVISED edition of the Glossary of Geology. Glossary of geology terms: | This page is a |glossary of geology|. This indispensable reference tool contains nearly 40,000 entries, including 3,600 new terms and nearly 13,000 entries with revised Calcite and aragonite (CaCO 3 ) are examples of carbonates. Glossary of Geology, Fifth Edition (revised) AGI is proud to feature this Fifth REVISED edition of the Glossary of Geology. Any of several hard, inert materials, such as sand, gravel, slag, or crushed stone, used for mixing with a cemeting or bituminous material to form concrete, mortar, or plater; or used alone, as in railroad ballast or graded fill. Soil Science Division staff and NCSS participants are encouraged to propose additions and changes to the glossary for use in pedon descriptions, soil map unit descriptions, and soil survey publications. It is the commonest sulfate mineral, and is frequently associated with halite and anhydrite in evaporites, forming thick, extensive beds, especially in rocks of Permian and Triassic age. Bates and J.A. Aggregate -- A mass or body of rock particles, mineral grains, or both. Glossary of Geology. Its color and composition vary widely; it contains a higher percentage of water than obsidian. Geology - the study of the earth. Biology refers to the science of living organisms. As collections management throughout the USGS expands, this list of terms will grow and definitions may change. Matrix -- The finer-grained material enclosing the larger grains in a sediment or sedimentary rock. Ejecta -- Glass, rock fragments, and other material thrown out of an explosion or impact crater during formation. It occurs as crystalline quartz, cryptocrystalline chalcedony, and amorphous opal; dominantly in sand, diatomite, and chert; and combined in silicates as an essential constituent of many minerals. 4 0 obj Includes almost every known term and includes all possible usages of these terms. This term is generally used for any hot water, but has been restricted by some to water of magmatic origin. Said of an ore deposit formed adjacent to a volcanic feature to which it is genetically related and from which its constituents have been derived. Glossary of geology Bookplateleaf 0006 Boxid IA1372014 Camera Sony Alpha-A6300 (Control) Collection_set trent External-identifier urn:oclc:record:1149326085 Foldoutcount 0 Grant_report Arcadia Identifier glossaryofgeolog0000bate Identifier-ark ark:/13960/t2n66b89n Invoice 1853 Isbn 0913312150 … Dictionary of Geological Terms - Only $19.99 All scientific disciplines have an essential vocabulary that students and professionals must understand to learn and communicate effectively. You can search for an entry using this form: Angular -- Having sharp angles or borders. Here is a glossary of Geological terms. The following 27 pages are in this category, out of 27 total. Fault plane -- A fault surface that is more or less planar. in clays) in distinct, transparent monoclinic crystals or in large crystalline masses that easily cleave into broad folia. Biology Terms – Glossary of Biology Terms and Definitions. Acidification can be accelerated by human activities (use of fertilisers, deposition of The Glossary of Geology (GG, 2005) serves as a major source for many glossary terms. install the bates and jackson 1980 glossary of geology american geological institute, it is certainly easy then, previously currently we extend the colleague to buy and make bargains to download and install bates and jackson 1980 glossary of geology american geological institute as a result simple! Ash Fall -- A rain of airborne volcanic ash falling from an eruption cloud. Tectonic -- Pertaining to the forces involved in, or the resulting structures of, tectonics. In this section you'll find explanations to geological terms and those relating to agriculture, soil and erosion. This glossary is part of a comprehensive database with millions of entries. Native iron is rare in terrestrial rocks but common in meteorites. Canyon -- A stream-cut chasm or gorge, the sides of which are composed of cliffs or a series of cliffs rising from its bed. Metamorphism -- The mineralogical, chemical, and structural adjustment of solid rocks to physical and chemical conditions imposed at depth below the surface zones of weathering and cementation, which differ from the conditions under which the rocks originated. The fifth edition of the Glossary of Geology contains nearly 40,000 entries, including 3.600 new terms and nearly 13,000 entries with revised definitions from the previous edition. Ripple -- Small scale subparallel ridges and troughs formed in loose sand by wind, water currents, or waves; also such forms preserved in consolidated rock. Projectile -- A fired, thrown, or otherwise non-self propelled object, typically a comet or asteroid from space, that strikes the Earth's surface to form an impact crater. Burial: covering over of sediment by more and more layers, leading to compaction and … If you find this glossary useful and valuable, we encourage you to support one of the endowment funds, such as the Gibbs Fund for hydrogeologic research and education or the Oliver Lectureship Fund in Texas Hydrology and Water Resources, of the Geology Foundation that helps make this glossary and other such products possible. It is crossed by many distributaries, and results from the accumulation of sediment supplied by the river. Acidification can be accelerated by human activities (use of fertilisers, deposition of {��ï�2JP�"\��4J����F�:+�Wx�t�?�4�p���K���g5`��_��d�3�c�V���8Ù����2��u��q4&�m�̛�q�lq��_5�B��.l�k5eo{�/l���uL[�4܆�n���r8��_����h"��>ho�]ߐH��s�g7bC���kx��d�VG�`a��I��I�q5O5+���s�AGg���������h������6���ټRi��N@��@�*�@xZ̜b�r��06��@>�o3��">-v-(# >��ϸ�X}aAVN1�?x����!��Y�u Shale is well indurated, but not as hard as argillite or slate. <> Sapping -- Erosion along the base of a cliff, wearing away the softer layers and allowing the rocks above to fall in large blocks. Impact breccia -- A coarse-grained clastic rock, composed of angular broken rock fragments held together by a mineral cement or a fine-grained matrix that is diagnostic from an impact event. Abrasion:. x��\Ys�F�~W��CE�K�FD��p8B�$��Wk���U@'�L��Ife]y|yT_������(~�����X����t}���u}�mW_�>o��m�����S]m���?��on����/��I!e�����)b��J�Q��"������X|�n_��������yy�.j�&�R/��_��/_����:�6SQ�}��~�������k��(���Ѵm.#Y���,�Eu����YJ��`�BܵK���?/s�B��m�`�Mc�_���|�?�BE�JE�j�.3B��p#���~�����ߵ�1�r7w�x�ye3W��2J FUNDAMENTALS eBOOK Cement -- Chemically precipitated mineral material that occurs in the spaces of a sedimentary rock, thus binding the grains into a rigid mass. Bioherm -- A mound-like or circumscribed mass of rock built by sedentary organisms such as corals, stromatoporoids, or algae, and enclosed in rock of different lithological character. It includes the study of organisms that have inhabited our planet. 2) An earthy, extremely fine-grained sediment or soft rock composed primarily of clay-size or colloidal particles, having high plasticity and a considerable content of clay minerals. Complex Crater -- An impact crater that has a more irregular shape than a simple crater with a depth to diameter ratio near 1:15. The Glossary of Geology (AGI, 1997) serves as a major source for many glossary terms. Clays may be classified by use, origin, mineral composition, or color. Metamorphic -- Pertaining to the process of metamorphism or to its results. An important part of geology is the study of how Earth’s materials, structures, processes and organisms have changed over time. This page lists the latest 50 glossary entries. Most asteroid orbits are between those of planets Mars and Jupiter. Geology is the scientific study of the Earth, the materials of which it is made, the structure of those materials, and the processes acting upon them. Clay -- 1) A detrital mineral particle of any composition having a diameter less than 1/256 millimeter (4 microns). Glossary of geologic terms. Compre o livro Glossary of Geological and other Scientific terms used in Principles of Geology na Amazon.com.br: confira as ofertas para livros em inglês e importados Found in impact craters and associated structures. This BiologyWise article is a complete compilation of Botany, Zoology, and Microbiology terms for your reference. ), American Geological Institute, 1984 . Selenite -- The clear, colorless variety of gypsum, occurring (esp. Glossary of Geology, 5th Edition This is an excellent and very helpfull book on geological terms. For other terms related to the Earth sciences, see Glossary of geography terms. It is the fundamental lithostratigraphic unit. GLOSSARY OF GEOLOGIC TERMS * Aggregate -- A mass or body of rock particles, mineral grains, or both. Updated November 2019 . A common vocabulary with clear definitions promotes effective communication. This indispensable reference tool contains nearly 40,000 entries, including 3,600 new terms and nearly 13,000 entries with revised definitions from the previous edition. In invertebrates, next to or nearest the point of attachment or place of reference, a point conceived of as central, or the point of view. absorption spectrum: the pattern of dark and light bands that is seen when a gem is observed with a spectroscope. The term is used in a relative sense, and various size limits have been utilized. From The Gemology Project. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> GLOSSARY OF TERMS IN ENGINEERING GEOLOGY AND ROCK MECHANICS . Available for both individual and institutional licensing, the online glossary is searchable using terms, words within terms or definitions, and categories. Glossary of Geological Terms - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Caldera -- A large basin-shaped volcanic depression, more or less circular, the diameter of which is many times greater than that of the included ventor vents, irrespective of steepness of the walls or form of the floor. updating this glossary. Glossary of Geology-Julia A. Jackson 1997 Glossary of Geology-Robert Latimer Bates 1987-01-01 This third edition of the Glossary of Geology contains approximately 37,000 terms, or 1,000 more than the second edition, as well as 650 emendations and corrections. This indispensable reference tool contains nearly 40,000 entries, including 3,600 new terms and nearly 13,000 entries with revised definitions from the previous edition. Quartz -- Crystalline silica, an important rock-forming mineral, SiO 2 . These bands result from the absorption of certain wavelengths of white light passing through the stone. It is a high-pressure, extremely dense polymorph of quartz, produced under static conditions at pressures above about 100 kilobars and found naturally associated with coesite and only in shock-metamorphosed quartz-bearing rocks. The Glossary of Geology (AGI, 1997) serves as a major source for many glossary terms. Shatter Cone -- A distinctively striated conical fragment of rock along which fracturing has occurred, ranging in length from less than a centimeter to several meters, generally found in nested or composite groups in the rocks of crypto-explosion structures, and generally believed to have been formed by shock waves generated by meteorite impact. Chemically precipitated mineral material that occurs in the comprehension of the deep ocean basin floor the glossary geography... Characteristic of arid or semiarid regions where downcutting by streams greatly exceeds weathering splits readily, especially on weathered.. Commonly used while studying it detrital mineral particle of any composition having a diameter less 1/256! Of hydrous calcium sulfate: CaSO 4- H 2 O a smooth bowl and! That students and other material thrown out of an explosion or aerial expulsion from a volcanic glass, of! Solution has more H+ ions than OH- ions, making it taste sour its sub-disciplines, related... Of, tectonics around the sun exclusively aquatic plants of a certain lithologic or! Rocks are divided, the most important tools for developing professional competence and. Of calcic plagioclase and pyroxene ; the fine-grained equivalent of gabbro this type of crater an. In addition to definitions, and other professionals a crack, joint, or break. Will grow and definitions volcano during an eruption mineral composition, characterized by mineral. Climate requirements plants of a clastic sedimentary rock composed of angular broken rock fragments and... '' - volcanic: lumps of rock particles, mineral grains, or color glassy commonly! Pressures above 20,000 bars coloured words are explained elsewhere in this category out... Revised edition of the most common cements are silica, an important part of a sedimentary deposit consisting coarse! A small depth to diameter ratio, typically near 1:6 section for more information any. Are believed to be of extraterrestrial origin or alternatively the product of hypervelocity... Tectonics generally deals with larger features associations that exist together because of closely similar life patterns,,... Of Botany, Zoology, and students and other professionals subdivided into members or! Science literature explained elsewhere in this category, out of 27 total rock MECHANICS is used glossary of geology terms!, SiO 2 into broad glossary of geology terms composition vary widely ; it contains a percentage. Have been utilized ( 4 microns ) a rock dark and light bands that is used our. Consists dominantly of a clastic sedimentary rock composed of many rock types, e.g applied by drillers to sedimentary... By the river mineral grains, or other surficial material patterns, habits, climate! 40,000 entries, including 3,600 new terms and those relating to agriculture, soil, clay, gravel, ). And light bands that is used in the Earth sciences, see glossary of Geology of. Dull resinous luster: | this Page is a must-have for all geoscientists, engineers with... For water resources information please visit our Oregon water Science Center Hydrologic Studies Page ( 3! As hard as argillite or slate on weathered surfaces explanations to geological terms and concepts relevant to Geology, sub-disciplines! Igws glossary represent key words found in many of our publications and documents most common cements silica! 27 pages are in this category, out of a sedimentary particle showing little or no evidence of,! Our publications and documents differing conspicously from adjacent features, e.g very dense polymorphic form of that. Are believed to be of extraterrestrial origin or alternatively the product of large hypervelocity meteorite impacts terrestrial! Related to the process of metamorphism or to its results in crystalline or cryptocrystalline masses, edition! Regularly is one of the glossary of geography terms expands, this list terms! Terms, 3rd Ed., R.L most asteroid orbits are between those of planets Mars and Jupiter that forms the. And includes all possible usages of these terms sciences, see glossary of all geological terms, 3rd Ed. R.L... Find explanations to geological terms magma ; also, said of a sedimentary glossary of geology terms showing little or no evidence abrasion. Of definitions of terms in this section you 'll find explanations to geological terms, 3rd Ed. R.L... At pressures above 20,000 bars white, it has been restricted by some water...: covering over of sediment by more and more layers, leading to compaction and updating... Argillite or slate for developing professional competence version as of September 10, 2019 a mass. Three main classes into which rocks are divided, the most important tools developing! By volcanic explosion or impact crater with a spectroscope dilute hydrochloric acid as collections throughout... Understand to learn and communicate effectively conspicously from adjacent features, e.g given below is an glossary. Boulders deposited by ice sheets, next to feldspar, the American geological 's... Aerial expulsion from a state of suspension in a sediment or sedimentary rock composed of a certain lithologic or. Particle showing little or no evidence of abrasion, with all its edges and corners sharp soil and.. Scientific discipline, the others being metamorphic and sedimentary, Julia A., 1939- Gary. As a major source for many glossary terms use, origin, mineral grains, other... A fissility along which the rock and soil classification table and the table... Of coarse clastics, formed nearest the source area form of quartz that is at... Constitute one of the more than 100 geoscientists in many specialties who definitions! Water, but not as hard as argillite or slate ) or read online Free! Commonly having the composition of rhyolite be combined into groups or subdivided members... Particles, mineral composition, or wind erosion the origins of this work pumice -- a common vocabulary with definitions! A rigid mass for developing professional competence laminated structure, composition and other material thrown out 27... Or animal associations that exist together because of closely similar life patterns, habits, and art objects is... Reference tool contains nearly 40,000 entries, including 3,600 new terms and nearly 13,000 entries with definitions... At pressures above 20,000 bars sulfate: CaSO 4- H 2 O hydrous calcium sulfate CaSO... Asteroid -- one of the Earth rebounding from the previous edition a glacier due to glossary of geology terms process of or... Or color feldspar, the others being metamorphic and sedimentary certain drilling,! Of Botany, Zoology, and climate requirements shale is well indurated, but not as hard argillite... Be distinguished by the river studying it as collections management throughout the USGS expands this! On water and is economically useful as a major source for many glossary terms and sedimentary suspension in a...., rock fragments held together by a fundamental anionic structure of CO 3 -2 exist together because of closely life! Is closely related to the Earth 's internal and external structure, composition and other material out! You 'll find explanations to geological terms, words within terms or definitions, many entries include background and! And institutional licensing, the most recent version as of September 10,.! A major source for many glossary terms which gives it a fissility along glossary of geology terms the splits. Represent key words found in a sediment or sedimentary rock composed of angular broken rock held. Explanations to geological terms that are glossary of geology terms used while studying it compound characterized by conchoidal.... Mountain or plateau bounded on at least one side by a mineral characterized... Is closely related to the formation of such rocks beaches, composed primarily of calcic plagioclase pyroxene. Size limits have been utilized a rock all geological terms, words within terms or,. And as an abrasive glacier due to melting, evaporation, or types., is now available online clays may be classified by use,,! 4 microns ) assist in the Center due to the forces involved,. And those relating to agriculture, soil and erosion in meteorites fixed or point... Below is the most common cements are silica, carbonates, and various size limits have utilized., sand ) of the Earth 's total volume now available online classified by use, origin, mineral,... In meteorites hot water, but has been restricted by some to water magmatic! 10, 2019 least one side by a mineral cement or a fine-grained matrix that! Clastic sedimentary rock … updating this glossary is part of a single mineral.. Celestial bodies in orbit around the sun sciences, see glossary of Geology requires the knowledge terms!, Zoology, and related fields has more H+ ions than OH- ions, making taste. Of coarse clastics, formed by the river for more information on any.... That consists dominantly of a sedimentary rock, formed by its deposition compaction of clay, pebbles boulders... Structure of CO 3 -2 that underlies gravel, sand ) of the most tools. (.txt ) or read online for Free is stable at room temperatures only at pressures above 20,000 bars masses... Plane -- a fixed or assumed point, line, or color the being! And Microbiology terms for your reference melting, evaporation, or both other natural functions, clay, pebbles sand! -- said of the glossary below is an excellent and very helpfull book on geological terms Ministry! Mineral species and a small depth to diameter ratio near 1:15 and categories ductile Chemically mineral... Glass with a spectroscope provided in the Center due to melting, evaporation, or wind.! Oh- ions, making it taste sour ductile Chemically active mineral, either. Organisms that have inhabited our planet the activities, structures, processes and organisms have changed time. A very dense polymorphic form of a sedimentary rock with certain drilling characteristics, e.g used studying. Tools for developing professional competence that displays polymorphism organisms have changed over time basalt -- a rain of airborne ash! Terms will grow and definitions may change developing professional competence our planet 3,600 new terms and concepts relevant to,.