61. Centre For Petroleum And Environmental Organic Geochemistry CRICOS provider code 00301J, Welcome to the home page of PEOG, amember of the Australian Petroleum Cooperative Research Centre. http://chemistry.curtin.edu.au/peog/

CRICOS provider code: 00301J Welcome to the home page of PEOG, a member of the Australian Petroleum Cooperative Research Centre The Centre Staff Students ... Click here for Scholarship information This page is maintained by PEOG Last modified: Wednesday, 19-Dec-01 13:36:16 Please send comments to Ben van Aarssen CRICOS provider code: 00301J CRICOS provider code: 00301J

62. Geochemistry And Geomaterials geochemistry and Geomaterials. (Return to Overview). http://www.ees.lanl.gov/Capabilities/geochem/index.shtml

EES Home >>> Software/Tools Students/Postdocs EES Jobs ... Division Highlights breadCrumbs("ees.lanl.gov"," ","index.shtml","None","None","None","0"); Capabilities Thrusts Programs/Projects Publications ... EES-12 Geochemistry and Geomaterials (Return to Overview) Using our geochemistry and geomaterials capability, we contribute to the understanding of the fundamental properties of earth materials (solids and fluids) for a wide range of EES Division programs, including environmental programs (LANL-ER, NTS-ER, and YMP), national defense programs, and basic research This capability includes both theoretical and applied approaches to geological and environmental fluids (primarily aqueous fluids) and to geological and environmental solids (primarily minerals and clays/colloids). We have developed a number of unique laboratory-and field-based analytical tools to support our efforts, and we rely on a host of geochemical, geomaterial, and mineralogical modeling methods to predict their behavior and properties. Our results are used to predict how a geological material (solid or fluid) evolved or will evolve in response to changes in its environment. Chemin: Is a miniaturized instrument that allows us to collect x-ray diffraction and x-ray fluorescence data on Mars minerals.

63. NDSU Geochemistry Homepage Redirect Redirecting to http//www.ndsu.nodak.edu/instruct/sainieid/geochem/index.shtml.Please update your bookmarks. http://www.ndsu.nodak.edu/instruct/sainieid/geochem/geochem_welcome.html

Redirecting to: http://www.ndsu.nodak.edu/instruct/sainieid/geochem/index.shtml Please update your bookmarks.

64. ToG http://www.treatiseongeochemistry.com/

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65. SOFIA - Geochemistry Of Wetland Sediments From South Florida projects geochemistry of wetland sediments. Paper geochemistry of Florida Bay sedimentsI. Nutrient history at five sites in eastern and central Florida Bay http://sofia.usgs.gov/projects/wetland_seds/

Searching for something? Site Map Help Projects by Title by Investigator by Region by Topic ... by Program Products Publications Results South Florida Restoration Science Forum Synthesis Information Personnel About SOFIA Education Upcoming Events Data Database Data Exchange Metadata projects geochemistry of wetland sediments Investigator: William H.Orem Proposals Data Metadata ... Publications Summary The goal of this project is to examine the biogeochemical cycling of nutrients, carbon, and sulfur in sediments. Proposals Data Florida Bay Sediment Geochemical Data (from the data exchange pages) Metadata Geochemical Processes in Wetland Sediments from South Florida (document will open in a new browser window) Publications Abstracts: Biogeochemical Cycling of P, S, C, and N in Sediments from Wetlands of South Florida Geochemical Processes in Peats of South Florida Geochemistry of Florida Bay Sediments: Investigation of Nutrient and Seagrass History (from the Florida Bay Conference Proceedings Geochemistry of Wetland Sediments from South Florida Lignin Phenols in Sediments from Florida Bay as Indicators of Seagrass History (from the Florida Bay and Adjacent Marine Systems Science Conference, November 1999) Nutrient Geochemistry of the South Florida Wetlands Ecosystem: Sources, Accumulation and Biogeochemical Cycling

66. USGS -- Scientific Capabilities - Geochronology, Geochemistry, And Tracer Studie USGS Scientific Capabilities Geochronology,geochemistry, and Tracer Studies. http://geology.cr.usgs.gov/capabilities/geotrac.html

Geochronology Geochemistry and Tracer Studies The Geologic Division maintains a variety of high quality, state-of-the-art facilities that provide geochronological, geochemical, and isotopic tracer studies applied to both natural and artificial systems. Instruments and scientific staff are housed across the country in the major centers and are variably utilized according to programmatic and project priorities. Capabilities are logically subdivided into geochronology activities and geochemical and tracer studies. FUTURE DIRECTIONS C, Ar/ Ar, and TL dating methods are critically important and must be maintained substantially above a minimum level of competency. In response to this need, a Quaternary Geochronology group is forming to refine and strengthen techniques applicable to the 'young' age earth science problems that include U-series, C-14, Pb-210,-Ar-Ar, TL-OSL, and noble gas geochemistry ( H/ He, He and Ar in-growth, and He/ He for direct age determinations, Ne/Ar/Kr/Xe molecular and isotopic ratios

67. Central Mineral Resources Team - Regional Geochemistry Regional geochemistry. Team research on regional geochemistry involvesthe development of a coherent nationwide geochemical database http://minerals.cr.usgs.gov/team/regionalgeochem.html

Central Region Mineral Resources About Us Contacts Products ... Remote Sensing Central Region Mineral Resources Team Regional Geochemistry Team research on regional geochemistry involves the development of a coherent nationwide geochemical database through the integration of existing databases and new data. Other projects utilize and develop multi-element, multi-media geochemical databases to determine geochemical baselines for assessing the natural abundance and distribution of chemical elements and any changes caused by human activities. National Geochemical Database Project National Geochemical Database Project Summary Backgrounds and Baselines Project Backgrounds and Baselines Project Summary Development of a geochemical base of information to define the natural abundance and spatial distribution of chemical elements in the Earth's surface and subsurface environment. U.S. Department of the Interior U.S. Geological Survey Central Region Mineral Resources Team URL: http://minerals.cr.usgs.gov/team/regionalgeochem.html Contact Webmaster Last Modified Monday, 25-Nov-02 18:41:00

68. Science & Nature / Earth Sciences / Geochemistry 1 . Aqueous Environmental geochemistry by Donald Langmuir. 5 . geochemistry of NaturalWaters, The Surface and Groundwater Environments by James I. Drever. http://hallscience.com/earth_sciences/6.shtml

Home Earth Sciences Geochemistry Aqueous Environmental Geochemistry by Donald Langmuir Prentice Hall Hardcover - 600 pages 1 edition (December 27, 1996) The publisher, Prentice-Hall Engineering/Science/Mathematics Provides a thorough presentation of controls on the chemical quality of surface and subsurface waters, both pristine and polluted. Emphasis is placed on inorganic processes and on the chemistry of soil and groundwaters. Unlike most authors, whose civil/sanitary engineering backgrounds promote a more... Read more Aquatic Environmental Chemistry (Oxford Chemistry Primers, 57) by A. G. Howard Oxford Univ Press Paperback (October 1998) Using Geochemical Data : Evaluation, Presentation, Interpretation (Longman Geochemistry) by Hugh R. Rollinson Pearson Education UK Paperback (July 1993) The Planetary Scientist's Companion by Katharina Lodders, et al Oxford Univ Press Paperback - 384 pages (September 1998) Geochemistry of Natural Waters, The: Surface and Groundwater Environments by James I. Drever Prentice Hall Hardcover - 436 pages 3 edition (January 24, 1997)

69. Geochemistry, Links For Mineralogists geochemistry, Annotated links to internet resources, especially formineralogists, petrologists, crystallographers,geologists. http://www.uni-wuerzburg.de/mineralogie/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 Association of Exploration Geochemists (AEG). The AEG is an international organisation specialising in the field of exploration and applied geochemistry. Steven Bachrach , Thomas Pierce and Henry Rzepa Chemistry on the Internet . A selection of high quality chemical information on the Internet. 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. Department of Geology, University of Vermont, Burlington Isogeochem web page Richard N.

70. Introductions To Geochemistry, Links For Mineralogists Introductions to geochemistry, Annotated links to internet resources, especiallyfor mineralogists, petrologists, crystallographers,geologists. http://www.uni-wuerzburg.de/mineralogie/links/teach/geochemteach.html

Home Teaching Documents, Lecture Notes and Tutorials Introductions to Geochemistry Categories Introductions to Mineralogy Introductions to the History of Mineralogical and Geological Sciences Introductions to Petrology and Rock Identification Introductions to Fluid Inclusion Research ... Definitions Database@ Introductions to Geochemistry Geotimes , July 2002: Highlights . Discoveries in the Earth Sciences. Now Geotimes offer the Highlights section (summaries of research trends and discoveries) in full online. Go to: Neil C. Sturchio Geochemistry David Glover , Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA: Modeling, Data Analysis and Numerical Techniques for Geochemistry . Lecture notes. B.M. Gunn , Geochemistry of Igneous Rocks: Geokem The Geochemical Data Analysis Program . This site is aimed at helping graduate research workers with geochemical problems. All geochemical information presented comes from data stored in the "Geokem" database which was begun in about 1962 at the University of Montreal. Brief descriptions of most types of terrestrial and lunar igneous rocks, their regional distribution and classification, and examples of their geochemical trends and "fingerprints". David R.

71. Chapter 10. Geochemistry Minor and trace elements. Host minerals for the elements. 10. geochemistry. Linkto homepage. This page created January 11, 2001. CHAPTER 10. geochemistry. http://simplethinking.com/dunn/ch10/geochemistry.stm

General relations Minor and trace elements Host minerals for the elements 10. Geochemistry Geochemical studies of the orebodies have been published mostly as subordinate parts of other subjects. No modern, systematic overview exists and much remains to be done. The studies of Ridge (1952), Squiller (1976), and Squiller and Sclar (1976) are particularly meritorious. Many geochemical data were gathered by the New Jersey Zinc Company but were not published. Isotopic data were given by Valley and O’Neil (1981), Johnson (1990), Moore and Swihart (1990), and Davis (1993). A few very specific geochemical studies examined many minerals from here, but used specimens with unknown orebody relations. These include those of Papish and Stilson (1930) on gallium; Keevil (1943) on helium indexes, which gave generally poor results; Keevil (1950) on the radioactivity of many local minerals; Frondel (1970) on the scandium content of some minerals; and Li et al . (1994) on xenon and krypton in barite. General relations The great enigma of Franklin and Sterling Hill, aside from genesis but related to it, is the very uncommon and unique chemical composition of the ores. Although well-known as zinc deposits, the fact that they are predominantly iron-rich is often overlooked. An undifferentiated Zn-Fe-Mn oxide ore mineral (franklinite) in intimate association with zinc oxide (zincite) and zinc silicate (willemite), occurring in a carbonatian-siliceous gangue, and noted for the absence of both appreciable lead and sulfur, is a remarkable chemical combination not found elsewhere.

72. Petrology & Geochemistry return button, Petrology geochemistry. blank icon blank icon Conferenceicon, American Petroleum Institute (API), blank icon blank http://www.aldea.com/guides/ag/pg.html

American Petroleum Institute (API) Australian Institute of Petroleum (AIP) Branner Earth SciencesGeochemistry - Mineralogy - Metamorphic and Igneous Petrology Comprehensive Oil and Gas Information System (COGIS) ... Help with icons Site developed and designed by Aldea Communications For inquiries or to make suggestions email uniguide@aldea.com Last Modified: 1/28/98

73. Geochemistry Department The geochemistry Department combines expertise in chemical and isotopic analysis,molecular environmental science, mineralogy and multiscale data-gathering http://www-esd.lbl.gov/GEO/

Research Areas Facilities Publications Staff The Geochemistry Department combines expertise in chemical and isotopic analysis, molecular environmental science, mineralogy and multi-scale data-gathering methodology to enable geochemical characterization of earth systems from the macroscopic to the molecular. The department comprises four groups with complementary interests and capabilities. Molecular Geochemistry and Nanoscience Isotope Geochemistry Atmosphere and Oceans DOE has also recently funded LBNL as co-host (with Lawrence Livermore National Laboratory) for the development of a new center for global climate change. The Center for Research on Ocean Carbon Sequestration is headed at LBNL by ESDÕs Jim Bishop. Collaborators include Massachusetts Institute of Technology, Rutgers University, Scripps Institute of Oceanography, Moss Landing Marine Laboratories and Pacific International Center for High Technology Research. At Lawrence Livermore the leader is Ken Caldeira. The goal of the center is to research the feasibility, effectiveness and environmental acceptability of ocean carbon sequestration. Geochemical Transport A major effort of this group is the simulation and study of coupled mineral-water-gas reactive transport in unsaturated porous mediaÑparticularly in fractured rock under boiling conditions. This work has focused predominantly on the prediction of thermally-driven processes accompanying the potential emplacement of high-level nuclear waste at Yucca Mountain, Nevada, and on the understanding of the evolution of the natural hydrogeochemical system. Divisional collaboration brings together essential pieces, including hydrological processes in the unsaturated zone, thermodynamics and kinetics of geochemical processes, and isotopic effects. Current projects include:

74. GEOCHEMISTRY OF ARSENIC Arsenic in Ground Water of the Willamette Basin, Oregon geochemistryOF ARSENIC. geochemistry of Arsenic in the Willamette Basin. http://oregon.usgs.gov/pubs_dir/Online/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.

75. Mineralogy And Geochemistry Of Kimberlites And Related Rocks From Finland Mineralogy and geochemistry of Kimberlites and Related Rocks from Finland 7).4. MAJOR ELEMENT geochemistry. 4.1 Sample Preparation and Analysis. http://www.gsf.fi/explor/webdocs/kimberlite/finnish_kimberlites.htm

Mineralogy and Geochemistry of Kimberlites and Related Rocks from Finland (printed version published in the Proceedings of the 7th International Kimberlite Conference, 1999, p.625-636.) Hugh E. O'Brien and Matti Tyni Geological Survey of Finland, P.O. Box 96, FIN-02151 Espoo, Finland ABSTRACT Farther into the Karelian Craton occur dikes of carbonate-rich ultramafic lamprophyre (aillikite) and a rock which appears to have both olivine lamproite and Group II kimberlite affinities. The latter contains most of the typomorphic minerals of lamproite including phlogopite, K-richterite, low-Al diopside and has a major element composition equivalent to average olivine lamproite. Despite this the rock has tetraferriphlogopite zoning profiles and an accessory Ca-Zr silicate that differ from other reported lamproites and are in fact more typical of those seen in Group II kimberlites (orangeites). Keywords: kimberlite, lamproite, orangeite, aillikite, Finland, Nd-Sr isotopes, petrography, mineralogy, geochemistry. 1. INTRODUCTION

76. Geochemistry geochemistry Sources Handbooks. The encyclopedia of geochemistry andenvironmental sciences. New York, Van Nostrand Reinhold Co. http://library.caltech.edu/collections/geology/geochem.htm

Caltech Library System Geochemistry Sources Geographic Names Sources Geology of California Geology Sites ... Volcanology Sites Geochemistry Sources USGS Spectroscopy Lab - Spectral Library World Database of Crystallographers Mineralogy and Petrology Research on the Web (Geochemical Society) Table of the Nuclides Fundamental Physical Constants from NIST Periodic Table: Webelements Atomic Radii Tables ... Pete's Basalt Page Textbooks Geochemistry: an Online Textbook , by William M. White, Cornell University Lecture notes in geochemistry of stable and radiogenic isotopes and geochronology (Cornell University) Petrology courses online (University of Basel) Powder diffraction file [CD-ROM], International Centre for Diffraction Data Geology Reading Room Workstation QC482.D5 P682 The PDF-2 Database is a collection of single-phase X-ray powder diffraction patterns in the form of tables of interplanar spacings (d) and relative intensities (Int) and chemical name and formula as well as mineral name, if applicable. In addition, Miller indices, cell data and physical properties are listed, together with references for source information, where such data are available. As of Set 46, the total PDF-2 database contains about 77,500 active patterns, the overwhelming majority of which represent unique phases. Handbooks The encyclopedia of geochemistry and environmental sciences . New York, Van Nostrand Reinhold Co. [1972] Encyclopedia of earth sciences, v. 4A.

77. Lab Methods Main Page Marine geochemistry Laboratory Methods. In December 1999 Marine geochemistryedited by Horst D.Schulz and Matthias Zabel was published. http://www.geochemie.uni-bremen.de/koelling/MGCmain.html

Department of Geosciences Klagenfurter Strasse D-28359 Bremen - Germany Marine Geochemistry - Laboratory Methods Main Page On these pages the laboratory methods used by the marine geochemistry group of the Department of Geosciences in the University of Bremen are described. These pages are currently in their juvenile stage, so please do not hesitate to mail alternative methods, errors, references or useful links. The main objective of the current marine investigations are both porewater and solid phase analysis of sediment material recovered during several cruises with the research vessel METEOR . Published data from these cruises may be accessed through the PANGAEA database system. In our group, modelling of porewater and sediment interactions and diffusive processes is performed using CoTReM a computer software created for the simulation of one-dimensional transport of solutes and solid phases and their interactions driven by bio-geochemical reactions and thermodynamic equilibria occurring in natural environments. In December 1999 Marine Geochemistry edited by Horst D.Schulz and Matthias Zabel was published. This book contains all different aspects associated with our marine investigations. The final version of this book still contains some bugs which are described on the

78. Welcome To The Geochemistry & Hydrogeology Division Welcome to the geochemistry and hydrogeology division at the departmentof geosciences! Our fields of interest consist of aquatic http://www.geochemie.uni-bremen.de/

News Staff Projects Courses ... Downloads W elcome to the geochemistry and hydrogeology division at the department of geosciences ! Our fields of interest consist of aquatic geochemistry in both marine and terrestric environments, as well as hydrogeological problems. On our internet pages you will find essential information on most of our current research projects, and the staff who work on them. For additional information on any of the projects, please feel free to send an email to the scientific staff mentioned in the project description. If you are interested in joining our group, please confer news/carreer opportunities In case you have difficulties or suggestions concerning these web pages, please contact the webmaster [home] [top] [contact]

79. Geological Society - About Us - Journals Geea Home Page The Geological Society Publishing House. geochemistry Exploration,Environment, Analysis. A new coowned journal of the Geological http://www.geolsoc.org.uk/template.cfm?name=journals_geea_home_page

80. EAG EUROPEAN ASSOCIATION FOR geochemistry. The European Association of geochemistrywas founded to promote geochemical research and study in Europe. http://www.rdg.ac.uk/soil/EAG/

EUROPEAN ASSOCIATION FOR GEOCHEMISTRY Welcome to the EAG web-site. The European Association of Geochemistry was founded to promote geochemical research and study in Europe. Its main function is to organise bi-annual international Goldschmidt conferences in Europe. The association also awards two medals, one for a junior and one for a senior geochemist, for outstanding contributions to geochemistry. Contents Membership An online membership form for those who which to join the society. Conferences Information on the Goldschmidt conferences and other upcoming meetings. Chemical Geology Details of the Society's journal including the annual report of the Journal's editors Medals and Fellowships The EAG awards 2 medals and 15 fellowships each year. Here you will find details of these awards, who sits on the award committees and how to go about nominating your colleagues. Links Links to affiliated societies and other geochemical links. Committee Current EAG Committee and how to contact them.

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