EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


Mushroom Rock State Park

January 18, 2023


JamesVanG_mushroom rock_1b

Photographer: James J. Van Gundy

Summary Author: James J. Van Gundy
The photo above shows one of the several unusual rock formations in
Mushroom Rock State Park near Brookville, Kansas. The “mushrooms,”
which are also termed hoodoos, and their related features are the
result of differential weathering and erosion of mid-to-late
Cretaceous-age Dakota sandstone, widespread in the western United
States. Often associated with Dakota Sandstone are artesian
aquifers, oil and gas-producing horizons, and important occurrences of
dinosaur footprints and Mesozoic plant fossils. This sandstone
is also responsible for the Dakota hogback ridges seen along the
eastern margins of the Rocky Mountains in Colorado and Wyoming. Photo
taken on September 10, 2014.

Mushroom Rock State Park, Kansas Coordinates: 38.724593, -98.030644

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Geology Links

* Earthquakes
* Geologic Time
* Geomagnetism
* General Dictionary of Geology
* Mineral and Locality Database
* Mohs Scale of Mineral Hardness
* This Dynamic Earth
* USGS
* MyShake - University of California, Berkeley
* USGS Ask a Geologist
* USGS/NPS Geologic Glossary
* USGS Volcano Hazards Program

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Earth Science Picture of the Day is a service of the Universities
Space Research Association.

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