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Bedrock geologic map of the southern part of the Diorite and Champion 7 1/2 minute quadrangles, Marquette County, Michigan

IMAP 1058

By:
and

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Abstract

This map illustrates the bedrock geology of part of the Marquette iron range in the Diorite and Champion 7 ½-minute quadrangles. The area includes part of the Marquette trough, a synclinorium containing rocks of the Marquette Range Supergroup (Precambrian X) and older Precambrian W basement gneiss. Among the Precambrian X rocks is the economically important banded iron-formation, and the oldest rocks of the Precambrian W gneiss consist of a mafic-ultramafic volcanic-intrusive complex that contains gold deposits.

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Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Bedrock geologic map of the southern part of the Diorite and Champion 7 1/2 minute quadrangles, Marquette County, Michigan
Series title:
IMAP
Series number:
1058
Subseries:
NONE
Year Published:
1977
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Michigan Water Science Center
Description:
HTML Map
Country:
United States
State:
Michigan
County:
Marquette County
Scale:
24000