History of the Rove Formation

History of the Rove Formation

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Description

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Rove Formation is located in the upper northeastern part of Cook County, Minnesota, United States, and extends into Ontario, Canada. It is the youngest of the many Animikie layers, a layer of sedimentary rocks. Before the Rove sediments were laid down, during the Archean Eon, the Algoman orogeny added landmass along a border from South Dakota to the Lake Huron region; this boundary is the Great Lakes tectonic zone. Several million years later a thin layer of hypervelocity impact ejecta from the Sudbury impact event was deposited between the Rove and the older, underlying, Gunflint Iron Formation; it is estimated that at ground zero the earthquake generated by the meteor impact would have registered 10.2 on the Richter scale. During the Middle Precambrian a shallow inland sea covered much of the Lake Superior region and formed the Animikie Group, layers of sedimentary rocks overlying 2700-million-year-old Archean rocks. The Rove Formation is the youngest of the many Animikie layers. After the Rove sediments were deposited, the Penokean orogeny added more land mass by accretion that occurred from the south. A few hundred million years later the proto-North American continent nearshow more

Product details

  • Paperback | 88 pages
  • 152 x 229 x 5mm | 141g
  • DIC Press
  • United States
  • English
  • 6135908952
  • 9786135908954