2699032590
Pristine Paleolithic Fossilized Sea Horse Petrified in Stone Slab
Pristine Paleolithic Fossilized Sea Horse Petrified in Eocene Epoch Stone Slab discovered in the Wyoming Green River Formation.
Description:
Eocene Epoch - Green River Formation deposits are found in Colorado, Wyoming and Utah, generally along the present-day Green River. As an important lagerstatte, the Green River Formation sediments represent a continuous record of deposition that spans a 5 million year period from 53.5 to 48.5 mya. During that time, the uplift of the Rocky Mountains was nearly complete, creating a landscape of rugged mountain highlands separated by intermountain basins, many of which were occupied by lakes. Three primary ancient lakes identified from sediment concentrations have been given the names Lake Uinta, Lake Gosiute and Fossil Lake. Each lake represents deposits during different Tertiary timeframes.
Retail Gallery Price $199
On SALE $119
Sediment layering is evident in the Green River Formation deposits, where cyclicity is observed. Dark layers represent deposition during the growing season, while light layers were deposited during dry periods (winter). A pair consisting of a dark and a light layer is called a varve. Each varve represents an annual cycle of sedimentation (1 year). This regular, annual cyclicity of deposition, along with Chron C22r methods, radiometric dating and paleomagnetism make accurate dating of sediments possible.
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