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Geology (from Greek γη- (ge-, "the earth") and λογος (logos, "word", "reason")) is the science and study of the solid matter of a celestial body, its composition, structure, physical properties, history and the processes that shape it. It is one of the Earth sciences. Geologists have helped establish the age of the Earth at about 4.6 billion (4.6x109) years, and have determined that the Earth's lithosphere, which includes the crust, is fragmented into tectonic plates that move over a rheic upper mantle (asthenosphere) via processes that are collectively referred to as plate tectonics. Geologists help locate and manage the earth's natural resources, such as petroleum and coal, as well as metals such as iron, copper, and uranium. Additional economic interests include gemstones and many minerals such as asbestos, perlite, mica, phosphates, zeolites, clay, pumice, quartz, and silica, as well as elements such as sulphur, chlorine, and helium.
Astrogeology refers to the application of geologic principles to other bodies of the solar system. However, specialised terms such as selenology (studies of the Moon), areology (of Mars), etc., are also in use.
The word "geology" was first used by Jean-André Deluc in the year 1778 and introduced as a fixed term by Horace-Bénédict de Saussure in the year 1779. An older meaning of the word was first used by Richard de Bury. He used it to distinguish between earthly and theological jurisprudence.
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@schoun Science, beer, beer science, geology, Thirsty Bear http://j.mp/5W8JQo
danothebeach (Dan O'Donnell) Fri, 18 Dec 2009 20:34:37 -0000
@schoun Science, beer, beer science, geology, Thirsty Bear http://j.mp/5W8JQo
Shaping US geology: New director Marcia McNutt talks about her goals for the US Geological Survey. Rex Dalton Marci... http://bit.ly/8uCL5s
energysection (Energy Section) Fri, 18 Dec 2009 20:32:11 -0000
Shaping US geology: New director Marcia McNutt talks about her goals for the US Geological Survey. Rex Dalton Marci... http://bit.ly/8uCL5s
7pm can not get here fast enough! im ready to get this dumb geology final over... ughh!
khires (Kelley Hires) Fri, 18 Dec 2009 20:16:52 -0000
7pm can not get here fast enough! im ready to get this dumb geology final over... ughh!
@wiredscience because it rocks! (+1 for bad geology pun.)
hand_rail (hand_rail) Fri, 18 Dec 2009 20:16:36 -0000
@wiredscience because it rocks! (+1 for bad geology pun.)
@TopDraftPick we've had class together...u have some elaborate assistance methods... #geology w/ me, u, Ahmad, & Jackson
harnould1906 (Yves) Fri, 18 Dec 2009 20:05:43 -0000
@TopDraftPick we've had class together...u have some elaborate assistance methods... #geology w/ me, u, Ahmad, & Jackson
gonna attempt to get macys pasta again today! haha! someone wanna help me study geology?! i dont know how to study!!!!!
xoxo_emily (Emily Anne) Fri, 18 Dec 2009 19:56:28 -0000
gonna attempt to get macys pasta again today! haha! someone wanna help me study geology?! i dont know how to study!!!!!
Rollo, Inc. - Comprehensive environmental, geotechnical, earthquake, and infrastructure consulting services. Based in California.
Meta Description: [ Treadwell & Rollo is a nationally recognized environmental and geotechnical consulting firm. We serve a wide variety of private and public sector clients. Featured Project: Landfill Redevelopment, San Jose, California ]
CEC Energy Consultants - Services for geologic evaluations, interim executive management, and raising joint venture capital. Tulsa, Oklahoma.
Meta Description: [ CEC Energy Consultants is an engineering project management firm that allows you to outsource operations, engineering, and business development projects while maintaining project control ]
Environmental Litigation Associates - ELA offers technical litigation support and expert-witness testimony for both plaintiff and defendant cases. ELA was founded to provide experienced consultants and expert witnesses in the environmental sciences and engineering fields for the legal community.
Meta Description: [ Environmental Litigation Associates (ELA) is composed of a group of eight independent, senior environmental consultants offering litigation support in environmental science and engineering to attorneys, the legal community and to industry in general. ELA also sponsors The Institute of Environment... ]
Fred Snider Geology and Hydrology Expert Witness Services - Bringing over 25 years experience in geology, hydrology, geophysics and geotechnical engineering to pre-litigation investigations, litigation support, expert witness services and consulting. Based in Greensboro, NC.
Géo-topics Sprl in Belgium - Based in Belgium, firm provides expertise related to the extracting industry in the fields of survey, product characterization, quality management, expertise and training.
Meta Description: [ Geo-Topics is a consulting company in the field of geology and quality management for the quarrying and stone building industries. ]
Geoforensics - Forensic analyses and expert testimony related to water and soil aspects of criminal actions, groundwater and surface water contamination, environmental malpractice, consultant oversight, property transactions, and lake level problems. Based in Williamston, Michigan.
Meta Description: [ Innovative approaches, forensic analyses, and expert testimony related to water and soil aspects of criminal actions, groundwater/surface water contamination, environmental malpractice, consultant oversight, property transactions, and lake level problems. ]
GeoTesting Express - Massachusetts firm, providing geotechnical testing services on soils, rocks, solid waste and geosynthetic materials.
TWS Geologic Consulting - Provides advise to the mining, mineral and utility industries through an accomplished geotechnical and procurement professional.
Meta Description: [ TWS CONSULTING provides geotechnical consulting advice for the mining, mineral and energy industries ]
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