Geology of Keweenawan Supergroup Rocks near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan

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Abstract

This field trip examines the geology of rocks of the Keweenawan Supergroup (1 .1 Ga) and related intrusive rocks of the Midcontinent rift system (MRS) in the western part of the northern peninsula of Michigan. The combination of stops includes all formations of the Keweenawan Supergroup in this region. Examination of all described localities requires more than a single day and participants are encouraged to use this guidebook on their own to supplement the localities that will be visited on our one-day trip. Because of uncertainties of weather, road conditions, and remaining snow pack in early May in this region of very heavy snowfall, the stops that we will visitwill not be known until the date of the trip. Stops are numbered in stratigraphic order, from oldest to youngest, not in the order in which they will be visited.

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Additional publication details

Publication type Book
Publication Subtype Conference publication
Title Geology of Keweenawan Supergroup Rocks near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan
Year Published 1992
Language English
Publisher Institute on Lake Superior Geology
Description 30 p.
Larger Work Title Institute on Lake Superior Geology, proceedings of the 38th annual meeting
Country United States
State Michigan
County Gogebic County;Ontonagon County