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Welcome to the Wyoming State Geological Survey

Interpreting the past, providing for the future

Phosphate Rock in Wyoming

Report of Investigations No. 68 provides a geologic overview of phosphate occurences and deposits in Wyoming.

Landslide Known as "The Crack"

Recent landslide in Washikie County explained by WSGS geologists.

Wyoming Cultural Geology Guide

New Wyoming guide explores cultural through a geology lens. From the Oregon Trail to Paleo-Indian mining sites,Wyoming has many locations where culture and geology merge and stories unfold.

Lance and Fort Union Formations Study

New research helps define extent of coal-bearing strata and potential natural gas reservoir rock in the Great Divide Basin.

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State Dinosaur—Triceratops

State Fossil—Knightia

State Gemstone—Jade