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GEOREF RECORD
Paleocurrents of Lake Superior Precambrian quartzites
Francis John Pettijohn
Paleocurrents of Lake Superior Precambrian quartzites
Bulletin of the Geological Society of America (April 1957) 68 (4): 469-480
Paleocurrents of Lake Superior Precambrian quartzites
Bulletin of the Geological Society of America (April 1957) 68 (4): 469-480
Index Terms/Descriptors
- cross-bedding
- deformation
- framework silicates
- historical geology
- Lake Superior region
- metamorphic rocks
- North America
- physical geology
- planar bedding structures
- Precambrian
- quartz
- quartzites
- sedimentary structures
- silica minerals
- silicates
- Precambrian quartzites
- primary current structures
- paleocurrents and source
Abstract
Data on the attitude of the cross-bedding in the Sioux, Baraboo, Waterloo, Barron, Sturgeon, Mesnard, Mississagi, and Lorrain quartzites, all of Precambrian age, are summarized. The azimuth and inclination of the cross-bedding, corrected for tilt of the beds, show a regional uniformity and a remarkable persistence through time. The prevailing southeasterly dip of the cross-laminations shows that these deposits were derived from a highland north and northwest of their present outcrops.
ISSN: 1050-9747
Coden: BUGMAF
Serial Title: Bulletin of the Geological Society of America
Serial Volume: 68
Serial Issue: 4
Title: Paleocurrents of Lake Superior Precambrian quartzites
Author(s): Pettijohn, Francis John
Pages: 469-480
Published: 195704
Text Language: English
Publisher: Geological Society of America (GSA),
Boulder, CO,
United States
Accession Number: 1959-024176
Categories: Areal geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1959
