World Library  
Flag as Inappropriate
Email this Article

Petoskey stone

 

Petoskey stone

Unpolished Petoskey stone with cm scale.

A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized rugose coral, Hexagonaria percarinata.[1] The 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.

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.[1] When dry, the stone resembles ordinary limestone but when wet or polished using lapidary techniques, the distinctive mottled pattern of the six-sided coral fossils emerges. It is sometimes made into decorative objects. Other forms of fossilized coral are also found in the same location.

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

Contents

  • Etymology 1
  • Locations 2
  • Photo gallery 3
  • References 4
  • External links 5

Etymology

A polished Petoskey stone

The name comes from an Ottawa Indian Chief, Chief Pet-O-Sega. 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 princess. Petosegay, meaning "rising sun", "rays of dawn" or "sunbeams of promise", was named after the rays of sun that fell upon his newborn face. In keeping with his promising name, Petosegay was a wealthy fur trader who gained much land and acclaim for himself and his tribe. He was remarked upon to have a striking and appealing appearance, and spoke 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 passing, a city began on his land along Little Traverse Bay. The settlers christened the newborn city Petoskey, an anglicized form of Petosegay.[2]

Locations

Petoskey stones can be found on various beaches and inland locations in Michigan, with many of the most popular being those surrounding Petoskey and Charlevoix. 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.[3] Petoskey Stones are also commonly found in Iowa, Indiana, Illinois, Ohio, New York, Canada, Germany, England, and even Asia.[4]

On September 23, 2015, it was reported that a 93-pound Petoskey stone was removed from the shallow waters of Lake Michigan, near the city of Northport, Michigan.[5]

Photo gallery

References

  1. ^ a b 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. ^ http://www.michigan.gov/documents/deq/ogs-gimdl-GGPS_263213_7.pdf Michigan's official State Stone
  3. ^ Petoskey Stone, Petoskey Area Visitors Bureau
  4. ^ [2] Michigan Department of Environmental Quality
  5. ^ "Man lugs 93-pound Petoskey stone out of Lake Michigan". MLive Michigan. MLive Media Group. Retrieved 23 September 2015. 
  • Bruce Mueller and William H. Wilde, 2004, The Complete Guide to Petoskey Stones, The University of Michigan Press ISBN 978-0-472-03028-6

External links

  • Petoskey Stone Festival
  • Petoskey Stone Description
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.