81. USGS -- Isotope Tracers -- Resources -- Isotope Geochemistry information about applications of environmental isotopes for earthscience and ecological studies by the USGS. http://wwwrcamnl.wr.usgs.gov/isoig/res/funda.html

Studies About us Resources Resources on Isotopes Fundamentals of Stable Isotope Geochemistry The following is a brief review of some of the fundamentals of stable isotope geochemistry, including definitions terminology basic principles standards, and guidelines on reporting data. The sources of the text are given at the end. For a more detailed discussion of the fundamentals, see the chapter "Fundamentals of Isotope Geochemistry" by Kendall and Caldwell (1998) or the chapter "Environmental Isotopes" by Clark and Fritz (1997) Definitions Isotopes are atoms of the same element that have the same numbers of protons and electrons but different numbers of neutrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have similar charges but different masses. The superscript number to the left of the element designation indicates the number of protons plus neutrons in the isotope. For example, among the hydrogen isotopes, deuterium (denoted as D or H) has one neutron and one proton. This is approximately twice the mass of protium (

82. ISOGEOCHEM Information about the email discussion list for stable isotope geochemistry. Includes many isotope-related links including available positions, research laboratories, short course and workshop listings, and a searchable message archive. http://www.uvm.edu/~geology/geowww/isogeochem.html

This site is currently offline for update. Please check back after Jan 9 2005.

83. Geochemistry Department The Earth Sciences Division’s geochemistry Department combines expertise in chemical and The Isotope geochemistry group operates the Center for Isotope http://www-esd.lbl.gov/GEO/

84. Reaction-Transport Modeling In Ground-Water Systems USGS aqueous geochemistry codes, including PHREEQ (Speciation, ReactionPath, Advective Transport, and Inverse Geochemical Calculations) and NETPATH (Interactive Code For Modeling Net Geochemical Reactions Along a Flow Path). http://wwwbrr.cr.usgs.gov/projects/GWC_coupled/

Reaction-Transport Modeling In Ground-Water Systems David Parkhurst and Scott Charlton Project Description Software PHREEQC Version 2 A Computer Program for Speciation, Batch-Reaction, One-Dimensional Transport, and Inverse Geochemical Calculations PhreeqcI A Graphical User Interface for the Geochemical Computer Program PHREEQC (PC only) PHAST A 3D Reaction-Transport Model based on PHREEQC and HST3D NETPATH An Interactive Code For Modeling Net Geochemical Reactions Along a Flow Path PHRQPITZ A Computer Program Incorporating Pitzer's Equations For Calculation of Geochemical Reactions in Brines PHRQCGRF A Computer Program for Graphical Interpretation of PHREEQC Geochemical Transport Simulations (PC only) Obsolete software PHREEQC Version 1.6 Project Home Page Complete Water Resources Division Software USGS Home Page ... USGS Privacy Statement Please note that some U.S. Geological Survey (USGS) information accessed through this page may be preliminary in nature and presented prior to final review and approval by the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the sole responsibility of the user. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.

85. Berkeley Lab Earth Sciences Division Center For Isotope Geochemistry For more information concerning the Center for Isotope geochemistry, please contact. B. Mack Kennedy Center for Isotope geochemistry MS 70A4418 http://www-esd.lbl.gov/CIG/

86. Elsevier.nl - De Pagina Kan Niet Worden Weergegeven International English language journal publishing highquality, original research papers on mineralogy, petrology and geochemistry, emphasizing the application of mineralogy and geochemistry to petrogenetic problems. http://www.elsevier.nl:80/inca/publications/store/5/0/3/3/4/8/

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87. Geochemistry: Exploration, Environment, Analysis Web site for geochemistry Exploration, Environment, Analysis. http://geea.geoscienceworld.org/

Quick Search: advanced search GSW Home GeoRef Home My GSW Alerts ... Help Geochemistry: Exploration, Environment, Analysis GSW Announces Geochemistry: Exploration, Environment, Analysis About the Journal Editorial Board Instructions for Authors ... GSL Journals Home Geochemistry: Exploration, Environment, Analysis is published by the Geological Society of London. Search for Articles February 2001 - August 2005 Select an Issue from the Archive February 2001 - August 2005 Current Issue August 2005 Journal of the Geological Society Geochemistry: Exploration, Environment, Analysis Print ISSN: 1467-7873

88. Geophysical & Geological Consultants -- Interactive Interpretation & Training, I Outsourcing geoscience for the upstream petroleum industry geophysics, geology, petroleum engineering, geochemistry, workstation rental. Landmark and GeoQuest software. http://www.iiandt.com/

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89. Mineralogical Magazine Publishing the results of original scientific research in the fields of mineralogy, geochemistry and petrology, including extraterrestrial materials. http://minmag.geoscienceworld.org

Quick Search: advanced search GSW Home GeoRef Home My GSW Alerts ... Help Mineralogical Magazine Try the Society's abstracts journal, MINABS Online About the Journal Editorial Board ... MSGBI Journals Home Mineralogical Magazine is published by the Mineralogical Society of Great Britain and Ireland. Search for Articles March 1994 - June 2005 Select an Issue from the Archive March 1994 - June 2005 View Future Titles Through August 2005 Current Issue June 2005 IN THE CURRENT ISSUE: Water in the Earths mantle Molecular dynamics modelling of hydrated mineral interlayers and surfaces: structure and dynamics Clay Minerals Mineralogical Magazine Print ISSN: 0026-461X

90. 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

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91. Environmental Geochemistry Laboratory Professor Nicholson’s environmental geochemistry research laboratory applying physical inorganic and organometallic chemistry to environmental and http://envgeolab.netfirms.com/

Web Hosting by Netfirms Free Domain Names by Netfirms We apologise for the annoying pop-ups that accompany this site - a cost of using a free web-hosting solution. May we recommend PopupKiller, a free download at http://software.xfx.net/utilities/popupkiller/index.html to help with this problem. Welcome to the environmental geochemistry laboratory. Here we apply physical inorganic and organometallic chemistry to environmental and geological systems. Research Themes Take a look at the range of geochemistry projects undertaken by the lab. Publications A selection of recent environmental geochemistry papers from the lab. and our collaborators. Vacancies Latest details of geochemistry employment opportunites. Links Environmental chemistry, geochemistry and biogeochemistry research teams and resources world-wide. Collaboration Requests Areas of environmental geochemistry and biogeochemistry where we are intestested in developing new colaborative projects Contact Information Prof. Keith Nicholson Environmental Engineering Laboratory, University of Aalborg, Sohngaardsholmsvej 57, DK-9000 Aalborg, Denmark

92. SPT S.A. ----------------------------------------------- Mud logging, formation evaluation, applied geochemistry, reservoir management, basin analysismathematical modeling, information management systems. http://www.sptsa.com.ar/

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93. USGS NATIONAL GEOLOGIC MAP DATABASE - HOMEPAGE Searchable catalog of paper and digital geologic maps, mostly for the U.S. Maps and related data cover geology, hazards, earth resources, geophysics, geochemistry, geochronology, paleontology, and marine geology. http://ngmdb.usgs.gov/

Welcome to the Your Geoscience resource for maps and related data about: geology, hazards, earth resources, geophysics, geochemistry, geochronology, paleontology, and marine geology. Find 70,000+ maps, data, and related products, from 300+ publishers View 2000+ maps, online Lexicon of Geologic Names of the United States Find out where we're mapping now RESOURCES Links to Standards and Reports Our partners, the State geological surveys USGS Geoscience Programs and Databases Topographic maps Your are welcome. In cooperation with the Association of American State Geologists Funded by the USGS National Cooperative Geologic Mapping Program Mandated by the National Geologic Mapping Act URL http://ngmdb.usgs.gov/ngmdb/ngmdb_home.html Database project personnel Last Modified: May 6, 2005 USGS Privacy Statement

94. Archives Of ISOGEOCHEM@LIST.UVM.EDU Searchable archives of the email group for stable isotope geochemistry. http://list.uvm.edu/archives/isogeochem.html

List Archives Subscriber's Corner Server Archives List Archives List Management List Moderation Server Management Help ... Archive Search Archives of ISOGEOCHEM@LIST.UVM.EDU Stable Isotope Geochemistry Search the archives Post to the list Join or leave the list (or change settings) Manage the list (list owners only) September 2005 August 2005 July 2005 June 2005 ... LIST.UVM.EDU

95. Geochemistry geochemistry ; Biogeochemistry ; Mineralogy ; Petrology. geochemistry Cambridge Crystallographic Data Centre compilation of a computerised database http://www.lib.purdue.edu/eas/geochem.html

Purdue University Libraries Quick Links Your Library Account Interlibrary Loan Course Reserves Hours ... Ask a Librarian General Information Links EAS Library Library Info Resources Services ... Petrology Geochemistry  Cambridge Crystallographic Data Centre compilation of a computerised database containing comprehensive data for organic and metal-organic compounds studied by X-ray and neutron diffraction. Commission on Crystallographic Teaching: Teaching Pamphlets -International Union of Crystallography -online travel and adventure guide to the American Southwest Electron Microscopy Unit Snow Page Over 40 exquisite electron micrographs of snowflakes Fundamentals of Isotope Geochemistry - USGS Interactive Tutorial about Diffraction -pictorial guide to crystal structures and their Fourier transforms useful for teaching diffraction physics Isotope Tracers in Catchment Hydrology , by C. Kendall and J. J. McDonnell (Eds.), 1998, Elsevier Science B.V., Amsterdam, 839 p.

96. Waterloo Hydrogeologic - Groundwater Modeling Software, Groundwater Modeling Tra Develops and sells groundwater and environmental software for groundwater modeling, subsurface visualization, pumping test analysis, geochemistry, and natural attenuation and risk assessment. Products include Visual MODFLOW, AquiferTest, Visual Groundwater, Visual HELP, AquaChem, WHI UnSat Suite and the MoNA ToolKit. http://www.waterloohydrogeologic.com/

GW Contour Now Released ! Take advantage of our introductory offer! Software Products Demos ... View Map groundwater protection, groundwater modeling, groundwater model, groundwater modelling, groundwater software Waterloo Hydrogeologic, Inc . is a world renowned leader in the development of powerful, yet easy-to-use software applications to meet the advancing technology requirements of groundwater and environmental professionals around the world. For the past 15 years, we have been setting the standard in this industry with user-friendly software solutions for: Groundwater modeling Unsaturated zone modeling Landfill hydrology modeling 3-D visualization of subsurface environmental data Pumping test and slug test analysis Geochemistry data management, analysis, and plotting

97. Geophysics Geophysics and geochemistry are the pursuit of geological problems with the tools of physics and chemistry, including seismology, gravimetry, remote sensing http://geology.about.com/od/geophysics/

zJs=10 zJs=11 zJs=12 zJs=13 zc(5,'jsc',zJs,9999999,'') About Homework Help Geology Homework Help ... Help zau(256,140,140,'el','http://z.about.com/0/ip/417/C.htm','');w(xb+xb+' ');zau(256,140,140,'von','http://z.about.com/0/ip/496/7.htm','');w(xb+xb); FREE Newsletter Sign Up Now for the Geology newsletter! See Online Courses Search Geology Geophysics and Geochemistry Branches of geology that touch other sciences: seismology, remote sensing, gravimetry and more. Alphabetical Recent The Oklo Natural Nuclear Reactor A spontaneous nuclear reactor made of uranium ore may be Earth's neatest trick. Oldoinyo Lengai, the world's weirdest volcano How a unique volcano can erupt not silicate lava, but molten carbonate. Lost City of Serpentinization Lost City, on the Atlantic seafloor, is the product of a major geochemical process. Rhenium-Osmium Studies Two rare metals yield deep geologic clues. Earth Rotation Studies Why every day is a little different by a few milliseconds—part of the "Earth Science in Space" series. More Categories Seismology (43) more from your guide High-Precision Gravimetry How we study Earth motions and changes with fantastically accurate gravity meters.

98. Home - Mineralogical Association Of Canada Mineralogical Association of Canada journal provides a forum for scientists, both national and international, to publish in English or French, the results of their research in the fields of mineralogy, crystallography, petrology, geochemistry and mineral deposits. http://www.mineralogicalassociation.ca/

Mineralogical Association of Canada Association minéralogique du Canada Contact Us Home About us Journal ... Looking back NEW PUBLICATIONS New short course volume SC35 EXPLORATION for PLATINUM-GROUP ELEMENT DEPOSITS Promotional flyer Table of contents Special Publication 8 MINERAL SPECIES FIRST DESCRIBED from GREENLAND Promotional flyer Table of contents New short course volume SC34 MERCURY : SOURCES, MEASUREMENTS, CYCLES AND EFFECTS Promotional flyer Table of contents TRUTH AND BEAUTY IN METAMORPHISM Abstracts SPECIAL OFFER Clays for our future Proceedings of the 11th International Clay Conference 1997 are now available at reduced cost. Contributions To Canadian Mineralogy MEETINGS You are visitor since June 26, 2002. News Flash Try it! Renew your 2006 membership online or send renewal form. June issue of Can Min online Table of contents Book agents: 2006 ... Elements Magazine Download our order form. © 2005 Mineralogical Association of Canada Last update 2005-07-13

99. Isotope Geochemistry - Introduction Isotope geochemistry Introduction. This course provides an introduction to the use of isotopes in geochemistry. The course is divided into a series of http://www.huxley.ic.ac.uk/Local/EarthSciUG/ESFirstYr/EarthMaterials/mrpalmer/Ea

100. Page Not Found Describes the geology, petrology and geochemistry of the Northbrae and Leona Rhyolites in the East Bay Hills, San Francisco Bay Area, California. http://eqdoc.home.netcom.com/lin.html

myEarthLink Web Mail My Account Support EarthLink The Web You can also search the EarthLink site by entering a keyword below: EarthLink The Web HOME ABOUT US CONTACT US PARTNER PROGRAMS ... CAREERS@EARTHLINK document.write(cpYear+" ") Members and visitors to the EarthLink Web site agree to abide by our Policies and Agreements EarthLink

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