The Resource Nature and style of deformation in the foreland of the early Proterozoic Penokean orogen, northern Michigan, by J.S. Klasner, R. W. Ojakangas, K. J. Schulz, and G. L. LaBerge

Nature and style of deformation in the foreland of the early Proterozoic Penokean orogen, northern Michigan, by J.S. Klasner, R. W. Ojakangas, K. J. Schulz, and G. L. LaBerge

Label
Nature and style of deformation in the foreland of the early Proterozoic Penokean orogen, northern Michigan
Title
Nature and style of deformation in the foreland of the early Proterozoic Penokean orogen, northern Michigan
Statement of responsibility
by J.S. Klasner, R. W. Ojakangas, K. J. Schulz, and G. L. LaBerge
Title variation
Deformation in the Early Proterozoic Penokean orogen, Northern Michigan
Creator
Contributor
Author
Subject
Language
eng
Summary
Evidence for Early Proterozoic north-verging folding and thrusting in the continental foreland of the Penokean orogen is present in two widely separated areas in northern Michigan. In the eastern part of the exposed orogen, asymmetric to over-turned folds in the Early Proterozoic Michigamme Formation suggest an initial (D1) phase of possibly north verging thin-skinned deformation. A second phase (D2 ) is characterized by a more thick skinned deformation consisting of northward thrusting of Archean gneiss and overlying Early Proterozoic quartzite along ductile thrust faults. Crosscutting shear zones indicate a third phase (D3 ) of deformation involving east- northeast thrusting of Archean gneiss. Thick-skinned deformation D2 and D3 phases include spaced fracture cleavage, kink folds, and lineations in D1, foliation surfaces. Near the west end of the exposed orogen in Michigan, bedding-cleavage relationships in the Early Proterozoic Tyler Formation also indicate northward tectonic transport. These structures, which are interpreted as D1 lie along the north edge of the Archean Puritan batholith and associated Archean greenstone. The north-verging structures in the northern Michigan segment of the Penokean orogen were formed approximately 1,850 Ma during collision of the Wisconsin magmatic terranes with the continental foreland of Michigan, Wisconsin, and Minnesota
Member of
Action
will digitize
Cataloging source
DLC
http://bibfra.me/vocab/lite/collectionName
Technical Report Archive & Image Library (TRAIL)
http://library.link/vocab/creatorName
Klasner, J. S
Dewey number
  • 557.3 s
  • 551.7/15/09774
Government publication
federal national government publication
Illustrations
  • illustrations
  • maps
Index
no index present
LC call number
QE75
LC item number
.B9 no. 1904-K
Literary form
non fiction
NAL call number
407
NAL item number
G29B no.1904-K
Nature of contents
bibliography
http://library.link/vocab/relatedWorkOrContributorName
  • Ojakangas, Richard W.
  • Schulz, K. J.
  • LaBerge, Gene L.
  • Geological Survey (U.S.)
Series statement
  • U.S. Geological Survey bulletin
  • Contributions to Precambrian geology of Lake Superior region
Series volume
  • 1904-K
  • ch. K
http://library.link/vocab/subjectName
  • Rock deformation
  • Geology, Stratigraphic
  • Geology, Structural
  • Orogenic belts
  • Geology, Stratigraphic
  • Geology, Structural
  • Orogenic belts
  • Proterozoic Geologic Period
  • Rock deformation
  • Michigan
Label
Nature and style of deformation in the foreland of the early Proterozoic Penokean orogen, northern Michigan, by J.S. Klasner, R. W. Ojakangas, K. J. Schulz, and G. L. LaBerge
Link
Instantiates
Publication
Note
Shipping list no.: 1991-778-P
Bibliography note
Includes bibliographical references (pages 20-22)
Carrier category
volume
Carrier category code
nc
Carrier MARC source
rdacarrier
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Dimensions
28 cm.
Extent
iv, 22 pages
Lccn
91011096
Media category
unmediated
Media MARC source
rdamedia
Media type code
n
Other physical details
illustrations, maps
System control number
  • (OCoLC)23253847
  • (OCoLC)ocm23253847
Label
Nature and style of deformation in the foreland of the early Proterozoic Penokean orogen, northern Michigan, by J.S. Klasner, R. W. Ojakangas, K. J. Schulz, and G. L. LaBerge
Link
Publication
Note
Shipping list no.: 1991-778-P
Bibliography note
Includes bibliographical references (pages 20-22)
Carrier category
volume
Carrier category code
nc
Carrier MARC source
rdacarrier
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Dimensions
28 cm.
Extent
iv, 22 pages
Lccn
91011096
Media category
unmediated
Media MARC source
rdamedia
Media type code
n
Other physical details
illustrations, maps
System control number
  • (OCoLC)23253847
  • (OCoLC)ocm23253847

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