Geology Links – Geologynet
Source: geologynet.com | Original PDF converted and link-corrected, May 2026.
Correction Legend
? OK Verified active
? Fixed URL repaired/updated
? Dead/Gone Page gone; best alternative noted
Environmental Geology / Science
Natural Environment Research Council (NERC)
? Fixed
? Fixed
Supports Research into Earth Science and Technology, UK
Original URL nerc.ac.uk now redirects to UKRI. Direct NERC page: ukri.org/councils/nerc/
National Oceanic and Atmospheric Administration (NOAA)
? OK
? OK
US National Agency for Environmental Information and Research
General Geology
Ask-A-Geologist (USGS)
? Fixed
? Fixed
Your Questions Answered by a Geologist, USGS
Original URL walrus.wr.usgs.gov/ask-a-geologist/ — the ask-a-geologist service now runs at answers.usgs.gov
Introduction to Rocks and Minerals
? OK
? OK
A Classic Introductory Text to Rocks and Minerals – Geologynet
? Dead Periodic Table of Technology (Verizon)
Original URL: os.verizon.com/beacon/periodic-tech-table/ — page no longer exists. Verizon retired this microsite.
Suggested replacement: Compound Chem – Periodic Table of Tech or search “periodic table of technology” for current equivalents.
Geochemistry
Fluid Inclusions – U of Wisconsin
? Fixed
? Fixed
Fluid Inclusion Resources and Information
Original URL had a broken path (~pbrown/.html). Correct URL is geology.wisc.edu/~pbrown/fi.html
GeoRoc (GEOROC)
? Fixed
? Fixed
Geochem Database of Ocean Floor and Continental Rocks
Original URL georoc.mpch-mainz.gwdg.de/georoc/ still partly works (legacy query interface at georoc.mpch-mainz.gwdg.de) but the database has moved to georoc.eu under the DIGIS project at Göttingen University.
NGDC Geological Databases
? OK
? OK
National Geophysical Data Center — Ocean Floor Geochemical/Lithological Data
? Dead Noble Metal Database (WHOI)
Original URL whoi.edu/NobleMetals/ — no longer accessible. WHOI retired this specific database.
Suggested replacement: EarthChem Portal — comprehensive geochemical data including PGE and Os-isotope datasets.
? Dead Practical Aspects of Mineral Geothermobarometry (Oxford)
Original URL earth.ox.ac.uk/~davewa/pt/pt-start.html — no longer active.
Suggested replacement: PerpleX (ETH Zurich) — widely used thermobarometry software and resources.
? Dead Geochemistry Web Links – Cornell University
Original URL geo.cornell.edu/geology/classes/Geochemweblinks.HTML — no longer active.
Suggested replacement: EarthChem.org
Igneous Petrology
? Dead Igneous Rocks – Cal Poly Pomona
Original URL geology.csupomona.edu/alert/igneous/ignrxs.htm — no longer active.
Suggested replacement: Tulane University Igneous Rocks Guide
? Dead Myrmekite and Metasomatic Granite – CSUN
Original URL csun.edu/~vcgeo005/ — no longer active. CSUN retired this faculty page.
? Dead Petrography Page – Humboldt State
Original URL sorrel.humboldt.edu/~jdl1/petrography.page.html — no longer active. Humboldt State University was renamed Cal Poly Humboldt and restructured its pages.
Suggested replacement: Virtual Microscope (Open University)
? Dead Rob’s Granite Page – UT Austin
Original URL uts.cc.utexas.edu/~rmr/ — no longer active. Old UT personal page server.
? Dead Textures of Igneous Rocks – Pitt University
Original URL pitt.edu/~cejones/GeoImages/2IgneousRocks/IgneousTextures.html — no longer active.
? Dead Thin Section Atlas – Southampton
Original URL soes.soton.ac.uk/resources/collection/minerals/sections/index.html — no longer active.
Suggested replacement: Virtual Microscope (Open University) or Earth2Geologists.net
? Dead Thin Sections Tutorial – Idaho State University
Original URL geology.isu.edu/geostac/Field_Exercise/Cassia_mtns/thinsect.html — no longer active.
World Volcano Center – Smithsonian Global Volcanism Program
? Fixed
? Fixed
Current volcanic activity worldwide
Original URL volcano.si.edu/reports/usgs/ — now redirects to main GVP portal. Updated to volcano.si.edu
Mathematical Geology
Computer Contouring
? OK
? OK
Description of Implementation of Contouring/Gridding Algorithm in Surface III
? Dead MathTools.net
Original URL mathtools.net — domain no longer active.
Suggested replacement: MATLAB File Exchange or SciPy (Python) for scientific/math tools.
Metamorphism and Metamorphic Rocks
? Dead Graphite Page – Michigan Tech
Original URL phy.mtu.edu/~jaszczak/graphite.html — no longer active.
Suggested replacement: Graphite on Mindat.org
? Dead Metamorphic Petrology Links – Oxford University
Original URL earth.ox.ac.uk/~davewa/metpet.html — no longer active.
? Dead Metamorphic Rocks – James Madison University
Original URL csmres.jmu.edu/geollab/Fichter/MetaRx/ — no longer active.
Suggested replacement: Tulane University Metamorphic Rocks
Mineralogy
American Mineralogist Crystal Structure Database
? Fixed
? Fixed
Crystal structure database
Original URL rru.geo.arizona.edu/AMS/amcsd.php — corrected to rruff.geo.arizona.edu/AMS/amcsd.php
? Dead Athena Mineralogy
Original URL un2sg1.unige.ch/www/athena/mineral/mineral.html — no longer active. University of Geneva retired this server.
Suggested replacement: Mindat.org for mineral name lists.
? Dead Atlas of Rocks, Minerals and Textures – UNC
Original URL leggeo.unc.edu/Petunia/IgMetAtlas/mainmenu.html — no longer active.
Suggested replacement: Virtual Microscope (Open University)
International Mineralogical Association (IMA)
? OK
? OK
Commission on New Minerals and Mineral Nomenclature
? Dead Minerals – UCL Thin Section Photographs
Original URL ucl.ac.uk/~ucfbrxs/PLM/PLMhome.html — no longer active. UCL retired this page.
Suggested replacement: Virtual Microscope (Open University)
? Dead Minerals Under the Microscope – Bristol
Original URL gly.bris.ac.uk/www/teach/opmin/mins.html — no longer active.
Suggested replacement: Virtual Microscope (Open University)
? Dead Optical Mineralogy – University of Idaho
Original URL uidaho.edu/~mgunter/opt_min/opt_min.html — no longer active.
? Dead Petrographic Concepts – NC State / Plymouth
Original URL ces.ncsu.edu/plymouth/programs/drees2.html — no longer active.
RRUFF Project – Raman Spectroscopy Database
? Fixed
? Fixed
University of Arizona — Integrated database of Raman spectra, X-ray diffraction and chemistry data for minerals
Original URL was simply “rru.info” (broken/ambiguous). The correct URL is rruff.info — also being migrated to rruff.net (beta). Also note: the AMCSD link above (originally rru.geo.arizona.edu) should be rruff.geo.arizona.edu.
? Dead Links for Mineralogists – Würzburg
Original URL uni-wuerzburg.de/mineralogie/links.html — no longer active.
Mineral and Gem Collecting
? Dead Gemology and Lapidary Pages
Original URL tradeshop.com/gems/index.html — no longer active.
Suggested replacement: Gemology Online
Gemstone Calculators
? OK
? OK
Various Calculators Online to Calculate Carats, SG and Precious Metal Weight
Paleontology
Canadian Fossil Discovery
? OK
? OK
Museum and Research Center with the Largest Collection of Marine Fossils in Canada
? Dead The Diatom Home Page – Hamburg
Original URL www1.biologie.uni-hamburg.de/b-online/library/diatoms/diatom.html — no longer active.
Suggested replacement: AlgaeBase or DiatomBase.org
DINOBASE – University of Bristol Palaeobiology
? Fixed
? Fixed
Online Dinosaur Database, University of Bristol
Original URL palaeo.gly.bris.ac.uk/resources.html — the old palaeo.gly.bris.ac.uk server still partly resolves but DinoBase as a standalone database is now integrated into Bristol’s palaeobiology research pages. Also see Paleobiology Database as a broader alternative.
Dinosaur Provincial Park – Alberta
? Fixed
? Fixed
UNESCO World Heritage fossil site, Alberta, Canada
Original URL pc.gc.ca/progs/spm-whs/itm2-/site3_e.asp — Parks Canada restructured their URLs. Updated to parks.canada.ca/pn-np/ab/dinosaur
? Dead Ediacara – Queen’s University
Original URL geol.queensu.ca/museum/… — no longer active. Queen’s University restructured their geology museum pages.
Suggested replacement: Ediacaran biota – Wikipedia or Paleobiology Database
? Dead Fossil Preparation and Conservation – U of Florida
Original URL mnh.u.edu/natsci/vertpaleo/resources/prep.htm — no longer active. Broken domain (mnh.u.edu).
Suggested replacement: Florida Museum Vertebrate Paleontology
? Dead Impact Craters and Mass Extinctions
Original URL www1.tpgi.com.au/users/tps-seti/crater.html — no longer active. TPGI (Telstra/Big Pond) shut down personal pages.
Suggested replacement: Impact Earth or Earth Impact Database (PASSC)
? Dead Plant Fossil Record – Hamburg / IOP
Original URL biologie.uni-hamburg.de/b-online/library/iopaleo/pfr.htm — no longer active.
Suggested replacement: Paleobiology Database (PBDB)
? Dead Preserving Fossils – U of Nebraska State Museum
Original URL www-museum.unl.edu/research/vertpaleo/musnote2.html — no longer active. University restructured museum pages.
Suggested replacement: University of Nebraska State Museum – Vertebrate Paleontology
Royal Tyrrell Museum
? Fixed
? Fixed
Famous Museum of Paleontology Near Calgary, Canada
Original had typo “Tyrell” — correctly spelled “Tyrrell”
Sedimentology / Stratigraphy
? Dead Petrographic Atlas of Coals – SIU
Original URL mccoy.lib.siu.edu/projects/crelling2/atlas/ — no longer active.
? Dead Shale Research – UT Arlington
Original URL uta.edu/paleomap/homepage/Schieberweb/schieber.htm — no longer active. UT Arlington restructured faculty pages.
Structural Geology and Tectonics
? Dead Geologic Structures – Folds and Faults – U of Colorado
Original URL ruby.colorado.edu/~smyth/G1010-10.html — broken path (G1010-10 instead of G101-10).
Corrected URL: ruby.colorado.edu/~smyth/G101-10.html
Structural Geology Notebook – U of Nebraska Omaha
? OK
? OK
Notes on Ramps and Flats, Sand Box Modelling, Brittle Faulting etc.
? Dead World-Wide Earthquake Locator – U of Edinburgh
Original URL geos.ed.ac.uk/~quakes/v6_beta/map.html — no longer active. Edinburgh retired this tool.
Suggested replacement: USGS Earthquake Hazards Program – Live Map