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MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Near Interior in Jackson County, South Dakota — The American Midwest (Upper Plains)
 

Anatomy of a Badland

 
 
Anatomy of a Badland Marker image. Click for full size.
By Ruth VanSteenwyk, July 15, 2019
1. Anatomy of a Badland Marker
Inscription.  
In the days when oreodonts walked this land, the rock layer before you was not rock but the muddy bottom of a streambed. Over time, those sediments hardened into the thick horizontal band of grayish red stone you see here.

Thin ribbons of rock called clastic dikes slice vertically through the horizontal layers around you. Composed of a harder substance than the surrounding butte, the clastic dikes erode at a slower rate and can take on the appearance of a spine running through the strata.

Picture Captions:


The most common mammal fossils found here are those of oreodonts, dog-to pig-sized herbivores. Oreodonts grazed here 34 to 24 million years ago.

Called popcorn rock, bentonite is a clay that includes expansive volcanic ash. When wet, grains can expand up to 20 times in size, creating an extremely slick surface.
 
Erected by Badlands National Park, National Park Service, U.S. Department of the Interior.
 
Location. 43° 45.86′ N, 101° 55.54′ W. Marker is
Anatomy of a Badland Marker image. Click for full size.
By Ruth VanSteenwyk, July 15, 2019
2. Anatomy of a Badland Marker
near Interior, South Dakota, in Jackson County. Marker is on Enter The Door Trail. Located at the beginning of the Door Trail. Touch for map. Marker is at or near this postal address: 20687 SD-240, Interior SD 57750, United States of America. Touch for directions.
 
Other nearby markers. At least 8 other markers are within 4 miles of this marker, measured as the crow flies. Mako sica (within shouting distance of this marker); Badlands Oasis (approx. 0.9 miles away); Cliff Shelf Nature Trail (approx. one mile away); The Badlands Wall (approx. 1.9 miles away); Bands of Time (approx. 3.9 miles away); What a Find! (approx. 3.9 miles away); A 75-Million-Year Walk (approx. 3.9 miles away); Under the Sea (approx. 3.9 miles away). Touch for a list and map of all markers in Interior.
 
Categories. PaleontologyParks & Recreational Areas
 
The Door Trail image. Click for full size.
By Ruth VanSteenwyk, July 15, 2019
3. The Door Trail
 

More. Search the internet for Anatomy of a Badland.
 
Credits. This page was last revised on July 23, 2019. This page originally submitted on July 22, 2019, by Ruth VanSteenwyk of Aberdeen, South Dakota. This page has been viewed 40 times since then. Photos:   1, 2, 3. submitted on July 22, 2019, by Ruth VanSteenwyk of Aberdeen, South Dakota. • Bill Pfingsten was the editor who published this page.
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