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A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized rugose coral, Hexagonaria percarinata. [1] Such stones were formed as a result of glaciation, in which sheets of ice plucked stones from the bedrock, grinding off their rough edges and depositing them in the northwestern (and some in the northeastern) portion of Michigan's lower peninsula.
The Petoskey Formation is an arenaceous limestone named for its locale (Petoskey, Michigan), and contains the eponymous Petoskey stones. The Whiskey Creek Formation is a limestone. The Traverse Group formed as a shallow carbonate shelf during the Devonian period (~419 to 359 Ma), when the most recent supercontinent , Pangea , was just beginning ...
Petosegay or Biidassige (Ottawa: Light that is Coming) (c. 1787 – June 15, 1885) was a 19th-century Odawa merchant and fur trader. Both present-day Petoskey, Michigan, Petoskey State Park, and nearby Emmet County park Camp Petosega are named in his honor.
Though not really a castle and not really made of coral, world-famous structure built by one man is considered an engineering marvel
Fossils of this genus form Petoskey stones, the state stone of Michigan. [1] They can be seen and found in most Midwestern U.S. states. Hexagonaria is a common constituent of the coral reefs exposed in Devonian Fossil Gorge below the Coralville Lake spillway [2] and in many exposures of the Coralville Formation in the vicinity of Coralville ...
Garden of the Gods contains 1,343.3 acres of land, with 862 acres designated as a Natural National Landmark in 1971. The name came from a surveyor by the name of Rufus Cable when Colorado Springs ...
Patuxent River stone agate (2004) Massachusetts [38] Babingtonite (1971) Roxbury puddingstone (1983) Rhodonite (1979) Michigan [39] Petoskey stone fossilized coral (1965) Chlorastrolite (aka Isle Royale greenstone) (1972) Minnesota [40] Lake Superior agate (1969) Mississippi [41] [42] Petrified wood (1976) Opal (2023) Missouri [43]
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