Author: Paul Kibler SimsPublisher:
ISBN:
Category : Geology
Languages : en
Pages : 20
Book Description
Archean and Early Proterozoic Tectonic Framework of North-Central United States and Adjacent Canada
Author: Paul Kibler SimsPublisher:
ISBN:
Category : Geology
Languages : en
Pages : 20
Book Description
Archean and Early Proterozoic Tectonic Framework of North-Central United States and Adjacent Canada
Author: Paul Kibler SimsPublisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 12
Book Description
Archean and Early Proterozoic Tectonic Framework of North-Central United States and Adjacent Canada
Author: Paul Kibler SimsPublisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 12
Book Description
U.S. Geological Survey Bulletin
Author: Paul Kibler SimsPublisher:
ISBN:
Category : Faults (Geology)
Languages : en
Pages : 268
Book Description
The Early Proterozoic Michigamme Formation of northern Michigan was deposited in the southeastern part of the Animikie basin. The formation conformably overlies the Goodrich Quartzite and comprises three widespread members a lower member of thin-bedded shale, siltstone, and sandstone; the Bijiki Iron-formation Member; and an upper member of tur- biditic graywacke, siltstone, and mudstone and a few local members. The Goodrich Quartzite is interpreted as having been deposited in a tidally influenced shallow marine environ- ment. The lower member of the Michigamme is interpreted as having been deposited in a tidally influenced environment, the iron-formation member as having been deposited below wave base in somewhat deeper water, and the upper member as having been deposited in still deeper water with turbidity currents being a major depositional mechanism. Several lines of evidence including paleocurrents, paleo- geographic setting, and neodymium isotopes suggest that the graywacke of the southern part of the outcrop area was derived from the south (Early Proterozoic Wisconsin magmatic terranes, Archean miniplates, and older Early Proterozoic sedimentary units formed on the continental margin), and that the graywacke in the northern area was derived from an Archean terrane to the north. The tectonic model that best fits the available data is a northward-migrating foreland basin.
U.S. Geological Survey Bulletin
Author: Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1482
Book Description
New Publications of the U.S. Geological Survey
Author: Geological Survey (U.S.)Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 156
Book Description
New Publications of the Geological Survey
Author: Geological Survey (U.S.)Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 428
Book Description
Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1094
Book Description
Publications of the Geological Survey
Author: Geological Survey (U.S.)Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 348
Book Description