41. Welcome To The Organic Geochemistry Unit - School Of Chemistry - Bristol Univers The Organic geochemistry Unit (OGU) is based in the School of Chemistry of the University of Bristol. The research we conduct aims to develop our http://www.chm.bris.ac.uk/ogu/

skip menus ogu home chemistry home chemistry contacts ... help ABOUT US News History Facilities Group Photographs ... Contacts RESEARCH Biogeochemistry Palaeoclimate Reconstruction Archaeological Chemistry PEOPLE Academic Staff Research Staff Postgraduate Students Visiting Researchers ... Ex-members RESOURCES Publications Useful Links GROUP ONLY University home ... OGU home Welcome to the O rganic G eochemistry U nit The Organic Geochemistry Unit (OGU) is based in the School of Chemistry of the University of Bristol. The research we conduct aims to develop our understanding of the biogeochemistry of modern-day and ancient environments and the way that it is affected by natural processes and the actions of mankind. This is achieved principally through the application of cutting-edge analytical chemistry and instrumental techniques. The OGU currently comprises 5 academic staff, around 30 postgraduate students/postdoctoral researchers and 8 final-year undergraduate project students making it one of the biggest research groups based in The School of Chemistry. The group laboratories also hosts the NERC Life Sciences Mass Spectrometry Facility (Bristol node) The OGU is one of the groups comprising the Bristol Biogeochemistry Research Centre Accessed times since 01/12/05.

42. ScienceDaily: Geochemistry News Earth and Climate Chemistry. Full text articles on organic and inorganic chemistry in the environment. Updated daily. http://www.sciencedaily.com/news/earth_climate/chemistry/

Geochemistry News Monday, March 31, 2008 Print Email Bookmark Latest News Earth Science Atmosphere Atmosphere Climate Weather Chemistry ... Oceanography Environmental Issues Acid Rain Air Pollution Air Quality Drought ... Sustainability Environmental Science Biodiversity Coral Reefs Desert Ecology ... Wildfires Natural Disasters Earthquakes Landslides Natural Disasters Near-Earth Object Impacts Severe Weather El Nino and La Nina Floods Hurricanes and Cyclones Severe Weather ... Books RSS New System Aims To Efficiently Convert Biomass To Ethanol full story Towards Bio-inspired Hydrogen Production Without Noble Metals full story ... Reason For Almost Two Billion Year Delay In Animal Evolution On Earth Discovered Browse News Stories 1 to 10 of 2,024 stories view headlines only Forest Landslides Geochemistry ... Satellites Help Map Soil Carbon Flux March 26, 2008 full story Water Soil Types Organic ... Using Ground-penetrating Radar To Observe Hidden Underground Water Processes March 26, 2008 full story Water Energy and the Environment Renewable Energy ... Artificial Photosynthesis Moves A Step Closer March 26, 2008 full story Agriculture and Food Organic Environmental Issues ... Organic Crops Impressively Productive When Compared With Conventionally Grown Crops March 26, 2008

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44. GEOL 641 Environmental Geochemistry This course explores the fundamental geochemical processes which affect the fate and transport of inorganic and organic pollutants in the terrestrial http://geoweb.tamu.edu/courses/geol641/

Course Description This course explores the fundamental geochemical processes which affect the fate and transport of inorganic and organic pollutants in the terrestrial environment . The course will cover both equilibrium and kinetic descriptions of the processes which affect the fate of pollutants. W will link the effects of these processes on pollutant bioavailability remediation and ecotoxicology Edwards aquifer recharge zone , Austin Texas. Photo B. Herbert. We will conceptualize the Earth as a system, focusing on specific suficial systems such as soils, sediments, groundwater, lakes, wetlands and estuaries. In particular, we will explore the use of a reductionist approach to the understanding of these complex systems. Instructor Dr. Herbert herbert@geo.tamu.edu Office Hours : by appointment Lecture : MWF 9:10-10, Halb 308

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46. EES-1 Home Page Focuses primarily on field and laboratory studies of geological processes related to environmental issues. Includes research and development, http://www-geo.lanl.gov/

Research and Development Programs Publications Staff-Alphabetically ... Staff -by Discipline Employment Opportunities Post doctoral Student Educational Opportunities LANL/UNMVolcanology Summer of Applied Geophysical Experience(SAGE) Professional Organizations Clay Minerals Society EES-1 Facilities and Tools HCP Field Work GEOLOGY AND GEOCHEMISTRY GROUP (EES-1) at Los Alamos National Laboratory focuses primarily on field and laboratory studies of geological processes related to environmental issues. Our staff is also involved in basic and applied research in geology, geochemistry, and related fields. Take a field trip through the Jemez Volcanic Field MS D462, Los Alamos National Laboratory, Los Alamos, NM 87545 PH: 505-667-7590 Fax: 505-665-3285 EES-1 EES Division LANL DOE ... Search L O S A L A M O S N A T I O N A L L A B O R A T O R Y Operated by the University of California for the US Department of Energy webmeister@lanl.gov - 27 April 1997

47. Geochemistry geochemistry of Igneous Rocks Homogeneity of Mantle, Global Element Distribution, Fingerprints, Oceanic Ridge Basalts, Volcanic Islands, Continental Flood http://www.infochembio.ethz.ch/links/en/chem_geochem.html

Deutsch Links Libraries Publishers Database producers Database hosts ... Organisations Search this website: Website Index Subject Index Impressum Chemistry, Biology and related disciplines in the WWW Geochemistry Home Links Atmospheric Chemistry - Online-Dissertation (PDF). Archives of ISOGEOCHEM - Searchable archives for stable isotope geochemistry. Fundamentals of Isotope Geochemistry - Text. Geochemical Cycles - Hot Links. Geochemical Glossary (PDF) Geochemistry Portal - Organizations, universities, laboratories, publications, and databases Geochemical Reference Samples DataBase Geochemical tracers of mantle processes - Introduction, Continental and Oceanic Mantle Lithosphere, MORB and Depleted Mantle, Evolution of the Depleted Mantle, Mantle Plumes, Re-Os Isotope Systematics, Noble Gas Studies, The Common Component of Plumes. Geochemie - Text. - Text und Abbildung. Geochemische Prozesse beim Stofftransport in Stollensystemen gefluteter Grubenbaue - Text. Geochemische Signale in Sapropelen des östlichen Mittelmeers Geochemistry - Online Texts on Geochemistry (PDF) Geochemistry (Information Retrieval in Chemitry) - Comprehensive Site.

48. Applied Geochemistry vls.icm.edu.pl/cgibin/sciserv. pl?collection=elsevier journal=08832927 - Similar pages Petroleum geochemistry GroupAustralian-based commercial petroleum exploration firm (a sub-group of the Commonwealth Scientific and Industrial Research Organisation) offering multiple http://vls.icm.edu.pl/cgi-bin/sciserv.pl?collection=elsevier&journal=08832927

49. GEOCHEMISTRY OF ARSENIC Finally, geochemical data (including the speciation data) and information from existing interpretive reports are used to construct preliminary hypotheses http://or.water.usgs.gov/pubs_dir/Html/WRIR98-4205/as_report6.html

Arsenic in Ground Water of the Willamette Basin, Oregon GEOCHEMISTRY OF ARSENIC Sources of Arsenic Review of Geochemical Processes Controlling Arsenic Mobility Two categories of processes largely control arsenic mobility in aquifers: (1) adsorption and desorption reactions and (2) solid-phase precipitation and dissolution reactions. Attachment of arsenic to an iron oxide surface is an example of an adsorption reaction. The reverse of this reaction, arsenic becoming detached from such a surface, is an example of desorption. Solid-phase precipitation is the formation of a solid phase from components present in aqueous solution. Precipitation of the mineral calcite, from calcium and carbonate present in ground water, is an example of solid-phase precipitation. Dissolution of volcanic glass within an aquifer is an example of solid-phase dissolution. Arsenic adsorption and desorption reactions are influenced by changes in pH, occurrence of redox (reduction/oxidation) reactions, presence of competing anions, and solid-phase structural changes at the atomic level. Solid-phase precipitation and dissolution reactions are controlled by solution chemistry, including pH, redox state, and chemical composition. Adsorption and Desorption Processes Arsenic is a redox-sensitive element. This means that arsenic may gain or lose electrons in redox reactions. As a result, arsenic may be present in a variety of redox states. Arsenate and arsenite are the two forms of arsenic commonly found in ground water (Masscheleyn and others, 1991). Arsenate generally predominates under oxidizing conditions. Arsenite predominates when conditions become sufficiently reducing. Under the pH conditions of most ground water, arsenate is present as the negatively charged oxyanions H2AsO4- or HAsO42-, whereas arsenite is present as the uncharged species H3AsO30 (Hem, 1985). The strength of adsorption and desorption reactions between these different arsenic species and solid-phase surfaces in aquifers varies, in part, because of these differences in charge. Differences in species charge affect the character of electrostatic interactions between species and surfaces.

50. Organic Geochemical Data Base--Provisional Release Since its inception in January of 1989, the US Geological Survey (USGS) Central Energy Team s Organic geochemistry Laboratory Data Base (OGDB) contains http://energy.cr.usgs.gov/prov/og/

Energy Resources Program Organic Geochemistry Data Base Home Introduction Download Data Documentation ... Links Last Data Base Update: June, 2007 Organic Geochemistry Data Base Provisional Release By C.N. Threlkeld Web Authoring by Chris Skinner "The data you have secured from this USGS Data Base are provisional and subject to revision. The data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use." U.S. Department of the Interior U.S. Geological Survey URL: http://energy.cr.usgs.gov /prov/og/index.htm Maintained by: Central Energy Team Data Management Last modified: 14:54:10 Mon 25 Jun 2007 Privacy Statement FOIA Accessibility

51. Geochemistry geochemistry research at the Geological Survey of Canada. http://gsc.nrcan.gc.ca/geochem/index_e.php

@import url(../_sys/css/base2.css); Natural Resources Canada www.nrcan.gc.ca Skip to content Skip to institutional links Common menu bar links Home Contact us Help Search ... Geological Survey of Canada Geochemistry Institutional links Site map Contact us Help Geochemistry Home Geochemical data National geochemical reconnaissance Geochemical modelling Miscellaneous reports Timmins, ON Central British Columbia Flin Flon, MB Metal mobility in lake sediments ... Environmental geochemistry and geochemical hazards Related links Metals in the environment Geochemistry (GSC Calgary) Geological Survey of Canada Geological Survey of Canada Geochemistry Geochemical data National geochemical reconnaissance Geochemical modeling Geochemical modeling will expand our knowledge of soil mineralogy by developing new approaches for mineralogical analyses. These will help define mineralogical controls on geochemical background variation, and the apportionment of trace elements among minerals and sample media. Miscellaneous reports Geochemistry of till and humus in the Timmins-Kamiskotia area, northeastern Ontario (NTS 42A/11, 12, 13, 14) In the summers of 1995 and 1996, the Geological Survey of Canada carried out Quaternary geological mapping and regional till and humus sampling in the Timmins-Kamiskotia area to determine geochemical backgrounds and identify patterns related to different bedrock lithologies and geochemical anomalies related to bedrock mineralization. Mercury concentrations in till, central British Columbia

52. Isotope Geochemistry - Department Of Geological Sciences - JSG - UT Austin Welcome to Isotope geochemistry at The University of Texas at Austin. The Department of Geological Sciences has a wideranging program in many aspects of http://www.geo.utexas.edu/isochem/

JSG Home Contacts Resources Careers ... Sites of interest "Mass Spectrometer-a machine that almost doesn't quite work." [EB Tucker] Todd Housh Office: GEO 6.312 Phone: E-mail housh@mail.utexas.edu Welcome to Isotope Geochemistry at The University of Texas at Austin . The Department of Geological Sciences has a wide-ranging program in many aspects of isotope geochemistry, including radiogenic and stable isotope geochemistry as well as U-Pb and U-Th series geochronology. Research programs in isotope geochemistry in the Department of Geological Sciences are integrated into a number of interdisciplinary areas such as igneous and metamorphic petrology, sedimentary geology, structure and tectonics, hydrogeology, and economic and petroleum geology, marine sciences and climate change as well as archaeology, botany, and environmental studies. The purpose of this webpage is to provide information on the people, programs and facilities involved in isotope geochemistry at the University of Texas at Austin. Send comments Accessibility Site Map Search ... UT Directory

53. Nsf.gov - Funding - Petrology And Geochemistry - US National The Petrology and geochemistry Program supports basic research on the formation and chemical composition of Earth materials in the crust, mantle, and core. http://www.nsf.gov/funding/pgm_summ.jsp?pims_id=13683

54. Index.jpg www.mines.edu/Academic/geochem/ 8k - Aquatic geochemistry - Geosciences. Aquatic geochemistry provides a medium for the publication of original studies broadly relating to the geochemistry of http://www.mines.edu/Academic/geochem/

55. ScienceDirect - Treatise On Geochemistry Home Page uclibs.org/PID/95160 Similar pages MARUM - The ocean in depth! - Organic geochemistry groupThe Organic geochemistry group is utilizing the information encoded in specific organic molecules (molecular biomarkers) to study geoscientific problems in http://uclibs.org/PID/95160

Athens/Institution Login Not Registered? User Name: Password: Remember me on this computer Forgotten password? Home Browse My Settings ... Help Quick Search Title, abstract, keywords Author e.g. j s smith Journal/book title Volume Issue Page Treatise on Geochemistry Shortcut URL to this page: http://www.sciencedirect.com/science/referenceworks/9780080437514 Editors-in-Chief : Heinrich D. Holland and Karl K. Turekian Updated June 2007 Add to Favorites About this Reference Work = Full-text available = Non-subscribed What does this mean? Browse General Information Table of Contents Authors Table of Contents Volume 1: Meteorites, Comets, and Planets Volume 2: The Mantle and Core Volume 3: The Crust Volume 4: The Atmosphere ... Elsevier B.V.

56. 2008 Geochemistry Archive Nature Geoscience geochemistry from. 2008 geochemistry January 2008 geochemistry. Top of page. January 2008 geochemistry. Asteroid breakup linked to the Great Ordovician http://www.nature.com/ngeo/archive/ngeo_s5_current_archive.html

57. Geochemistry Research - Homepage, USGS-ERP geochemistry research has been conducted under the Petroleum Processes Research Project since 1995. The project objectives are to apply and provide http://energy.er.usgs.gov/gg/research/

This page requires javascript enabled functionality USGS Home Contact USGS Search USGS Energy Resources Program Geochemistry and Geophysics - Geochemistry Research Energy Home About Energy Contact Energy How Are We Doing? ... Geochemistry and Geophysics Geochemistry Research Quick links below Publications and Data Mechanisms of Petroleum Generation Microbial Methanogenesis Origin and Controls of Microbial Gas ... Learn More . . . Additional Topics Geochemistry Laboratories Organic Geochemistry Database ENERGY PROGRAM NEWSLETTER CONTACT Mike Lewan Lead Geochemist Curtis Palmer Lead Geochemist Geochemistry Research: Introduction Geochemistry research has been conducted under the Petroleum Processes Research Project since 1995. The project objectives are to apply and provide cutting-edge research on processes related to petroleum (oil, gas, and asphalt) generation, migration, and entrapment, and the consequences of these processes on petroleum type, quantity, quality, and location. The research results strengthen the scientific credibility of realizing and assessing undiscovered conventional and unconventional petroleum resources at a national and global level and are critical to formulating a better understanding and strategic use of petroleum resources. Major research topics include origin mechanisms of petroleum formation, geochemical petroleum correlations, natural gas studies, shale as source and reservoir, source rock thermal maturity, sedimentary basin modeling, and microbial gas controls.

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59. Geochemistry, Links For Mineralogists geochemistry, Annotated links to internet resources, especially for mineralogists, petrologists, crystallographers,geologists. http://www.mineralogie.uni-wuerzburg.de/links/geochem/geochem.html

Home Geochemistry Geochemistry Categories Selected Geochemistry Websites On-line Geochemical Data Periodic Tables Introductions to Geochemistry@ ... Geochemistry Selected Geochemistry Websites Categories On-line Geochemical Data Periodic Tables Introductions to Geochemistry@ Introductions to Isotope Geochemistry, Spectroscopy and Spectronomy@ ... Definitions Database@ Selected Geochemistry Websites About.com Chemistry Ahmadi Geological Consultancy Geochemistry.com . A directory of businesses, university departments, associations, museums, etc. American Geophysical Union (AGU). AGU is a worldwide scientific community that advances, through unselfish cooperation in research, the understanding of Earth and space for the benefit of humanity. Go to: Volcanology, Geochemistry, and Petrology Section Association of Exploration Geochemists (AEG). The AEG is an international organisation specialising in the field of exploration and applied geochemistry. Georges Beaudoin Therrien Stable Isotope Fractionation Calculator (SIFC) . This online tool (periodically revised) comprises a non-exhaustive compilation of equations from literature. BioTech , Indiana University, University of Texas, Austin: An illustrated Dictionary . BioTech is a high level dictionary for college students and professionals, a hybrid biology/chemistry educational resource and research tool on the World Wide Web. Offers good graphics of bio-molecules.

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