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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.
Turnip Rock is a small geological formation in Michigan. It is a stack [1] located in Lake Huron, in shallow water a few yards offshore, near the rock called the Thumbnail which is the extreme tip of Pointe Aux Barques, a small peninsula in Pointe Aux Barques Township [2] which in turn is the extreme tip of The Thumb, a large peninsula comprising several counties in eastern Michigan.
Pictured Rocks National Lakeshore is a U.S. National Lakeshore in the Upper Peninsula of Michigan, United States. It extends for 42 mi (68 km) along the shore of Lake Superior and covers 73,236 acres (114 sq mi; 296 km 2 ).
Leaders of states in the U.S. which have significant mineral deposits often create a state mineral, rock, stone or gemstone to promote interest in their natural resources, history, tourism, etc. Not every state has an official state mineral, rock, stone and/or gemstone, however.
Eastern North America in the Middle Devonian, showing the Michigan Basin of the Rheic Ocean. In Michigan, the Bedford Shale is found in the southeast along shores of Lake Erie and Lake St. Clair; along the shore of Lake Huron north of Saginaw Bay; along the south shore of the Straits of Mackinac; north of 44 degrees latitude along the shore of Lake Michigan; and in the far southwest corner of ...
The same erosional forces responsible for the Permian and Mesozoic gaps in Michigan's rock record were active during the ensuing Paleogene and Neogene periods of the Cenozoic era. [2] As such, no Cenozoic fossils older than the Pleistocene are known from Michigan. [1] Nevertheless, Michigan has many deposits made during the Quaternary period.
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Pages in category "Rock formations of Michigan" The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes. A.