Links

2D Move, 3D Move, and other modules provide a complete suite of 2D and 3D structural restoration and modeling software including a fracture generator module.

Essential structural geology programs for Mac and Windows by Rick Allmendinger and students at Cornell.

Locace (structural interpretation) and Fraca (fracture network modeling). Commercial releases of IFP-developed software.

StructureSolver is interactive 2D structural analysis software designed to address both common seismic interpretation challenges and complex structural problems.

Software and hardware for borehole geophysics and geology, including a slimhole acoustic televiewer.

Wireline open & cased-hole acoustic televiewers and a wireline microresistivity imager.

Slimhole geophysical, hydrophysical and water quality logging and log interpretation, including optical televiewer.

Maker of Interactive Petrophysics, the most advanced petrophysics software. Al Lacazette wrote the original set of technical specifications for the borehole image module. This included new tools to make geologic measurements in borehole images. Such measurement tools are not available in other image log interpretation packages.

Wireline open & cased-hole acoustic televiewers, a microresistivity imager, and a conventional video imager.

Manufacturers of borehole geophysical logging systems for geological, natural resource, and environmental communities.

Geophysical logging tool and testing equipment manufacturer offering slimhole acoustic and optical televiewers with bundled software.

Slimhole borehole logging equipment and contract logging services for civil engineering, geotechnical, water well, environmental and mining surveys.

Wireline open & cased-hole acoustic televiewers, several types of wireline microresistivity imagers, and LWD density and microresistivity imagers.

Geothermal Rising is connecting the geothermal community and championing geothermal energy in the United States and around the world. Our vision is a brighter future for Earth and all its inhabitants, powered by the planet itself.

The International Geothermal Association (IGA) is a non-profit international organisation founded in 1988 and based in The Hague, Netherlands.

Univ. of Texas at Austin & Texas Bureau of Economic Geology. Focuses on finding new methods to understand and predict, characterize, and simulate fractures and other reservoir-scale structures.

One of the world's leading workers in natural rock fractures and earth stress.

Convert just about anything to anything else. Over 5,000 units and 50,000 conversions.

Converters & calculators for measurements, currency, time, math, finance, geography, Roman numerals, and more.

Calculate and map the effects of a nuclear detonation for anywhere on earth, any size of warhead, at any detonation height and get a map of the effects.

Calculate the effects of an asteroid or comet impact.

Constants, Units, and Uncertainty reference by the U.S. National Institute of Standards and Technology.

Currency converter and live foreign exchange rates.

Detailed data and properties for all elements: ionic radii, bond enthalpies, electronic and physical properties. From the University of Sheffield Chemistry Department.

The NIST Chemistry WebBook provides access to data compiled and distributed by NIST under the Standard Reference Data Program.

Compute the correct declination and inclination for correcting wellbore survey data or setting the declination on your compass.

Lots of information and a short link list.

Downloadable charts, British and International magnetic field calculators, and discussions of space weather effects on directional drilling and image log orientations.

A beautiful and well-designed site about shaded-relief maps.

The commercial continuation of historical maps made by renowned paleogeographer Dr. Ron Blakey, offering detailed, high-quality atlas series for North America and the globe. Deep Time Maps™ provides paleogeographic maps of the ancient world. The maps show the varied landscapes of the ancient Earth through hundreds of millions of years of geologic time including distribution of ancient shallow seas, deep ocean basins, mountain ranges, coastal plains, and continental interiors. Tectonic features shown include subduction zones, island arcs, mid-ocean ridges and accreting terranes. Latest geologic data from the scientific literature are used to compile and construct the ancient Earth.

This interactive module allows students to explore the science of Earth's deep history, from its formation 4.5 billion years ago to modern times.

Elementary theory & history for non-geologists and plate tectonic animations.

Deep geological time visualization. GPlates is a free, downloadable desktop software (for Windows, Linux, and macOS) that allows you to interactively manipulate plate reconstructions, plot geological/geophysical data, and visualize seafloor spreading.

Fun for the whole family, including the geologist. Check out the 3D virtual reality paleoglobes.

Make your own plate tectonic reconstructions.

U.S. Department of Energy data on oil and gas prices, imports and exports, supplies, and domestic exploration and production.

Autonomous agency linked with the Organization for Economic Co-operation and Development (OECD).

The Organization of the Petroleum Exporting Countries.

This page contains the latest version of the International Chronostratigraphic Chart which visually presents the time periods and hierarchy of stratigraphic names of Earth's geological history. It is available in multiple languages.

Downloadable geologic time scale with a magnetic stratigraphy column.

Accurate current local times adjusted for Daylight Savings Time.

Complete sun, moon and astronomical data including solstices, equinoxes, eclipses, celestial navigation, and an interactive sun/moon calculator for anywhere in the world.

Interactively make views of the earth and moon from space, plus more interesting links than you can stand.

Local and marine forecasts, conditions, satellite images, and radar for the entire U.S.

Hurricanes, typhoons and tropical cyclones from the U.S. Naval Research Laboratory's Marine Meteorology Division.

Weather forecasts, maps, etc.

National Hurricane Center forecasts and graphics in a convenient format.

Database of log curve and other mnemonics courtesy of the Society of Professional Well Log Analysts.