Near Hagerman in Gooding County, Idaho — The American West (Mountains)
Sediments and Fossils
Photographed By Barry Swackhamer, August 8, 2019
1. Sediments and Fossils Marker
Captions: (upper right) Pliocene fossils buried in the Hagerman Fossil Beds sediments, such as this horse skull, are some of the most diverse and plentiful in the world.l (bottom left) Sediment layers range from a few inches to several feet, depending on the extent of ancient river and lake deposition.; (bottom right) Skulls and other bones of the Hagerman Horse were preserved when they were buried under the sediments.
The rock layers in the bluff across the river are made of sediments - particles of sand, silt, and clay. These layers, called strata, were carried here by the ancient Snake River and were deposited as the river entered an ancient lake. This process usually occurred slowly, taking many years to build up just a few inches. During floods, however, strata could form rapidly, often trapping plants and animals within the sediments. Fossils - traces or remnants of organisms from the geologic past - are buried in the layers. Bones become fossils when their organic cells are slowly filled or replaced with minerals. Fossils found here include mammals, birds, fish, reptiles, amphibians and plants that scientists have dated from three to four million years old.
Erected by Hagerman Fossil Beds National Monument, National Park Service, U.S. Department of the Interior.
Topics. This historical marker is listed in these topic lists: Natural Features • Paleontology.
Location. 42° 45.786′ N, 114° 55.346′ W. Marker
this page online
Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies. A Changing Climate (here, next to this marker); Ancient Lakes (here, next to this marker); Where are the Fossils? (within shouting distance of this marker); "The People" (within shouting distance of this marker); Right Beneath Your Feet (approx. 1.8 miles away); Volcanoes Along the Snake (approx. 1.9 miles away); Manifest Destiny (approx. 1.9 miles away); The Great Westward Migration (approx. 2 miles away). Touch for a list and map of all markers in Hagerman.
More about this marker. This marker is located at Snake River Overlook in Hagerman Fossil Beds National Monument.
Photographed By Barry Swackhamer, August 8, 2019
2. Sediments and Fossils Marker
This marker is at the center.
Credits. This page was last revised on September 14, 2019. It was originally submitted on September 14, 2019, by Barry Swackhamer of Brentwood, California. This page has been viewed 137 times since then and 35 times this year. Photos: 1, 2. submitted on September 14, 2019, by Barry Swackhamer of Brentwood, California.
