NPS Geodiversity Atlas—Grand Teton National Park, Wyoming

Geodiversity refers to the full variety of natural geologic (rocks, minerals, sediments, fossils, landforms, and physical processes) and soil resources and processes that occur in the park. A product of the Geologic Resources Inventory, the NPS Geodiversity Atlas delivers information in support of education, Geoconservation, and integrated management of living (biotic) and non-living (abiotic) components of the ecosystem.

grand teton report cover with landscape image
In-depth geologic information is contained in the baseline inventory products of the Geologic Resources Inventory, see table below.

Geologic Features and Processes

[Site Under Development]

The central feature of the park is the Teton Range, an active, faultblock mountain front that is 40 miles long and 7–9 miles wide. The range includes 12 peaks over 12,000 feet, with the highest in the range over 13,000 feet. The park protects 7 morainal lakes along the base of the Teton Range and more than 100 alpine and backcountry lakes. The Snake River bisects the valley of Jackson Hole and is the headwaters of the Columbia River system.

The oldest rocks in Grand Teton National Park are also some of the oldest rocks in the National Park System and the world. These rocks represent Archean (4.0 billion to 2.5 billion years old) crust, part of the North American protocontinent. The Archean suite is composed of gneiss, amphibolites, ultramafic rocks, and metagabbro. Paleozoic and Mesozoic sedimentary rocks surround the central core, excepting the Cenozoic deposits that dominate the land surface immediately east of the core, in Jackson Hole.

Geology Field Notes

Students and teachers of college-level (or AP) introductory geology or earth science teaching courses will find that each park's Geologic Resource Inventory report includes the Geologic History, Geologic Setting, and Geologic Features & Processes for the park which provides a useful summary of their overall geologic story. See Maps and Reports, below.

Regional Geology

Grand Teton National Park is a part of the Middle Rocky Mountains Physiographic Province and shares its geologic history and some characteristic geologic formations with a region that extends well beyond park boundaries.

Maps and Reports

Geologic Resources Inventory

The Geologic Resources Inventory produces digital geologic maps and reports for more than 270 natural resource parks. The products listed below are currently available for this park, check back often for updates as many maps, reports, and posters are still in progress.
  • Scoping summaries are records of scoping meetings where NPS staff and local geologists determined the park’s geologic mapping plan and what content should be included in the report.
  • Digital geologic maps include files for viewing in GIS software, a guide to using the data, and a document with ancillary map information. Newer products also include data viewable in Google Earth and online map services.
  • Reports use the maps to discuss the park’s setting and significance, notable geologic features and processes, geologic resource management issues, and geologic history.
  • Posters are a static view of the GIS data in PDF format. Newer posters include aerial imagery or shaded relief and other park information. They are also included with the reports.
  • Projects list basic information about the program and all products available for a park.

Source: Data Store Saved Search 2885. To search for additional information, visit the Data Store.

Soil Resources inventory

NPS Soil Resources Inventory project has been completed for Grand Teton National Park and can be found on the NPS Data Store.

Source: Data Store Saved Search 2956. To search for additional information, visit the Data Store.

Related Articles

Grand Teton National Park

National Park Service Geodiversity Atlas

The servicewide Geodiversity Atlas provides information on geoheritage and geodiversity resources and values within the National Park System. This information supports science-based geoconservation and interpretation in the NPS, as well as STEM education in schools, museums, and field camps. The NPS Geologic Resources Division and many parks work with National and International geoconservation communities to ensure that NPS abiotic resources are managed using the highest standards and best practices available.

For more information on the NPS Geodiversity Atlas, contact us.

Last updated: October 25, 2019