Petoskey stone

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Hexagonaria percarinata
Temporal range: Givetian
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Petoskey stone unpolished with cm scale.jpg
Unpolished Petoskey stone with cm scale
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Cnidaria
Class: Hexacorallia
Subclass:† Rugosa
Order:† Stauriida
Family:† Disphyllidae
Genus:† Hexagonaria
Species:
†H. percarinata
Binomial name
†Hexagonaria percarinata
Stumm, 1970

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. In those same areas of Michigan, complete fossilized coral colony heads can be found in the source rocks for the Petoskey stones.

Contents

Petoskey stones are found in the Gravel Point Formation of the Traverse Group. They are fragments of a coral reef that was originally deposited during the Devonian period, approximately 350 million years ago. [1] When dry, the stone resembles ordinary limestone but when wet or polished using lapidary techniques, it reveals the distinctive mottled pattern of the six-sided coral fossils. It is sometimes made into decorative objects, or even used as a gemstone. [2] Other forms of fossilized coral are also found in the same location.

In 1965, it was named the state stone of Michigan.

Etymology

The stone was named for an Ottawa chief, Chief Pet-O-Sega, son of a French fur trader and Ottawa mother. The city of Petoskey, Michigan, is also named after him, and is the center of the area where the stones are found. The stones are commonly found on beaches and in sand dunes.

According to legend, Petosegay was a descendant of French nobleman and fur trader, Antoine Carre and an Ottawa daughter of a chief. Petosegay, meaning "rising sun", "rays of dawn" or "sunbeams of promise", was named by his father after the rays of sun that fell upon his newborn face. Building on his father's start and his place among the Ottawa, Petosegay became a wealthy fur trader who also acquired much land in the region, gaining acclaim for himself and his band. He was said to have a striking and appealing appearance, and spoke both French and English very well. He married another Ottawa, and together they had two daughters and eight sons. In the summer of 1873, a few years before the chief's death, settlers began to develop a village on his land along Little Traverse Bay. The settlers named it Petoskey, an anglicized form of Petosegay. [3]

Locations

Petoskey stones can be found on various beaches and inland locations in Michigan, with many of the most popular Petoskey stone beaches stretching from Traverse City to Petoskey along Lake Michigan. The movement of the frozen lake ice acting on the shore during the winters is thought to turn over stones at the shore of Lake Michigan, exposing new Petoskey stones at the water's edge each spring. [4] The type of coral that forms the basis of Petoskey Stones is also present in the fossil records of Iowa, Indiana, Illinois, Ohio, New York and locations in Canada, Germany, England, and Asia. [5]

On September 23, 2015, it was reported that a 93-pound Petoskey stone was removed from the shallow waters of Lake Michigan, near the village of Northport, Michigan. [6] In December 2015, the Michigan Department of Natural Resources confiscated the stone under a state law that disallows removing more than 25 pounds (11 kg) of materials from state lands. [7] It was announced in October 2017 that the stone would be placed on permanent display at the Outdoor Adventure Center, east of downtown Detroit near the Detroit River. [8]

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<span class="mw-page-title-main">Index of Michigan-related articles</span>

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Petoskey may refer to a number of articles relating to the U.S. state of Michigan:

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Petoskey State Park is a public recreation area covering 303 acres (123 ha) on Lake Michigan in Bear Creek Township, Emmet County, Michigan. The state park is located three miles (4.8 km) northeast of the city of Petoskey on Little Traverse Bay. It is surrounded by heavily vegetated sand dunes that are excellent examples of parabolic dunes. Michigan's state stone, the Petoskey stone, can be found on the park beach.

<span class="mw-page-title-main">Little Traverse Bay Bands of Odawa Indians</span>

The Little Traverse Bay Bands of Odawa Indians is a federally recognized Native American tribe of Odawa. A large percentage of the more than 4000 tribal members continue to reside within the tribe's traditional homelands on the northwestern shores of the state of Michigan's Lower Peninsula. The historically delineated reservation area, located at 45°21′12″N84°58′41″W, encompasses approximately 336 square miles (870 km2) of land in Charlevoix and Emmet counties. The largest communities within the reservation boundaries are Harbor Springs, where the tribal offices are located; Petoskey, where the Tribe operates the Odawa Casino Resort; and Charlevoix.

Petosegay or Biidassige 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. A particular variety of stone was found in abundance on his former lands and named after him, and the Petoskey stone was designated as the official state stone. His granddaughter, Ella Jane Petoskey, was asked by Michigan Governor George W. Romney to be an honored signatory on the bill assigning the Petoskey Stone as the state stone.

Antoine Carré was a French explorer and fur trader. After marrying the daughter of an Ottawa chieftain, he became founder and leader of the Bear River Ottawa during the mid-18th century, when he was known in Odawa as Neaatooshing.

<i>Hexagonaria</i> Extinct genus of corals

Hexagonaria is a genus of colonial rugose coral. Fossils are found in rock formations dating to the Devonian period, about 350 million years ago. Specimens of Hexagonaria can be found in most of the rock formations of the Traverse Group in Michigan. Fossils of this genus form Petoskey stones, the state stone of Michigan. They can be seen and found in most Midwestern states.

<span class="mw-page-title-main">Paleontology in Michigan</span>

Paleontology in Michigan refers to paleontological research occurring within or conducted by people from the U.S. state of Michigan. During the Precambrian, the Upper Peninsula was home to filamentous algae. The remains it left behind are among the oldest known fossils in the world. During the early part of the Paleozoic Michigan was covered by a shallow tropical sea which was home to a rich invertebrate fauna including brachiopods, corals, crinoids, and trilobites. Primitive armored fishes and sharks were also present. Swamps covered the state during the Carboniferous. There are little to no sedimentary deposits in the state for an interval spanning from the Permian to the end of the Neogene. Deposition resumed as glaciers transformed the state's landscape during the Pleistocene. Michigan was home to large mammals like mammoths and mastodons at that time. The Holocene American mastodon, Mammut americanum, is the Michigan state fossil. The Petoskey stone, which is made of fossil coral, is the state stone of Michigan.

The Traverse Group is a geologic group in Michigan, comprising middle Devonian limestones with calcareous shale components. Its marine fossils notably include Michigan's state stone, the Petoskey stone, among other corals and records of ancient marine life. A range of trilobites has also been found in the Traverse Group.

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The recorded history of Grand Rapids in the U.S. state of Michigan, began with settlers in 1806.

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Events from the year 1885 in Michigan.

References

  1. 1 2 Middle Devonian Transverse Group in Charlevoix and Emmet counties, Michigan, Geological Society of America Centennial Field Guide—North-Central Section, Randall L. Milstein, Subsurface and Petroleum Geology Unit, Michigan Geological Survey, Lansing, Michigan, 1987
  2. ↑ Gemstones of North America, Volume 3, John Sinkankas Van Nostrand, 1959, p.66
  3. ↑ http://www.michigan.gov/documents/deq/ogs-gimdl-GGPS_263213_7.pdf Michigan's official State Stone
  4. ↑ Petoskey Stone Archived 2011-07-19 at the Wayback Machine , Petoskey Area Visitors Bureau
  5. ↑ "Michigan Department of Environmental Quality" (PDF).
  6. ↑ "Man lugs 93-pound Petoskey stone out of Lake Michigan". MLive Michigan. MLive Media Group. 23 September 2015. Retrieved 23 September 2015.
  7. ↑ Tunison, John (11 December 2015). "State confiscates 93-pound Petoskey stone from Michigan man". MLive Michigan. Retrieved 11 December 2015.
  8. ↑ "93-pound Petoskey rock to be displayed in Detroit". Fox17 Online. 10 October 2017. Retrieved 10 October 2017.
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