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The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock found in the western United States which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone , sandstone , siltstone , and limestone and is light gray, greenish gray, or red.
Spider Rock Pinnacle Balanced Rock The West and East Mitten Buttes Window Rock. Antelope Canyon; Canyon de Chelly National Monument. Spider Rock; Capitol Butte; Cathedral Rock, Red Rock State Park, Sedona; Cathedral Rock (Coconino County, Arizona) Chaistla Butte; Chiricahua National Monument. Big Balanced Rock; Duck on a Rock; Mushroom Rock ...
A rock formation is an isolated, scenic, or spectacular surface rock outcrop. Rock formations are usually the result of weathering and erosion sculpting the existing rock. The term rock formation can also refer to specific sedimentary strata or other rock unit in stratigraphic and petrologic studies. A rock structure can be created in any rock ...
The Morrison Formation is a distinctive sequence of Late Jurassic sedimentary rock that is found in the western United States, which has a wide assortment of taxa represented in its fossil record, including dinosaur fossils in North America. It is composed of mudstone, sandstone, siltstone and limestone and is light grey, greenish gray, or red.
Madison Limestone – Geologic formation in the western United States; Michigan limestone; Onondaga Limestone – Hard limestones rock formation in North America; St. Genevieve marble – Marble found in Missouri (not a "true marble"; oolitic limestone) St. Louis Limestone – Mississippian period geologic formation in the Midwest United States
The Glen Canyon Group is a geologic group of formations that is spread across the U.S. states of Nevada, Utah, northern Arizona, north west New Mexico and western Colorado. It is called the Glen Canyon Sandstone in the Green River Basin of Colorado and Utah. [1] There are four formations within the group.
The regional geology of North America usually encompasses the geographic regions of Alaska, Canada, Greenland, the continental United States, Mexico, Central America, and the Caribbean. [1] The parts of the North American Plate that are not occupied by North American countries are usually not discussed as part of the regional geology.
The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock that is found in the western United States, which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandstone, siltstone and limestone and is light grey, greenish gray, or red.