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Widespread buried Precambrian layered sequences in the U.S. mid- continent: evidence for large Proterozoic depositional basins

American Association of Petroleum Geologists Bulletin

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Abstract

Describes examples of buried Precambrian layered rocks revealed by seismic reflection profiles. The layered rocks are as much as 12 km thick. Apparent sequence boundaries suggest they are parts of large depositional basins with diffractions and dipping strata due to faulting. Drill holes indicate that the top of the Precambrian "basement' is composed largely of silicic igneous rocks. These could be intermixed with, or underlain by, nonvolcanic (meta?)sedimentary strata. Though these layered rocks have a spatial association with igneous rocks and thus have likely been metamorphosed, the possibility that they contain Precambrian hydrocarbons that escaped heating is as yet untested. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Widespread buried Precambrian layered sequences in the U.S. mid- continent: evidence for large Proterozoic depositional basins
Series title:
American Association of Petroleum Geologists Bulletin
Volume
76
Issue:
9
Year Published:
1992
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
American Association of Petroleum Geologists Bulletin
First page:
1384
Last page:
1401
Number of Pages:
18