Recent U-Pb zircon geochronology of Paleoproterozoic post-Penokean granitic rocks of northern Michigan and Wisconsin, historically interpreted as an "anorogenic suite," has revealed a distinct age trend: magmatic pulses apparently migrated southward from ca. 1800 to 1750 Ma, after cessation of the ...
The rock is from middle Precambrian sedimentary formations in the Marquette Range located in the central part of the Upper Peninsula of Michigan. Occurrence of phosphate-bearing sediments in Precambrian rocks is rare. This deposit, containing 12 to 15 pct P2O5, is believed to be the richest ...
Cloud, P., Morrison, K., 1980. New microbial fossils from 2-gyr old rocks in northern Michigan. Geomicrobiol. J. 2, 161-178.Cloud PE, Morrison K (1980) New microbial fossils from 2 Gyr old rocks in northern Michigan. Geomicrobiol J 2:161–178...
Leland Blue stone from Northern Michigan Leland Blue Stone is known for its varying shades of blue, from light to dark, although it can also appear in greenish, purplish, or grayish hues. It often has a glassy or smooth appearance, with occasional pockmarks, air bubbles, or streaks resulting...
Bigfoot, UFOs, and Jesus is a supernatural story about the roots of family, a real side-splitter, and a tear-jerker all the way from northern Michigan. This movie will have you laughing and in tears, as it ties your emotions on a string pulled by the director Jesse Law from the begin...
Studies of lower Proterozoic volcanic rocks in Wisconsin and northern Michigan reveal the existence of two different Penokean-age (about 1,900 to 1,800 m.y. old) geologic terranes. The terranes are in contact along the east-west trending Niagara fault and are confined between Archean craton ...
Explore Munising, Michigan with Pictured Rocks Kayaking. Launch safely from our boat off-shore and discover the best parts of Northern Michigan's lakeshores.
Contrasting Metamorphic Record of Heat Production Anomalies in the Penokean Orogen of Northern Michigan It is proposed that the contrasting metamorphic mineral assemblages of the isolated amphibolite facies metamorphic highs in the Penokean or... K Attoh - 《Journal of Geology》 被引量: 14发表: 200...
Structure map of Archean Rocks, Palmer and Sands 7 1/2-minute quadrangles, Michigan, showing Great Lakes tectonic zone Paleocurrents, facies, and thickness variations suggest that volcanic and sedimentary rocks of the lower Huronian succession accumulated in an easterly-trending fault-bounded trough....
Pictured Rocks Campground is your place to expierence Michigan’s Upper Peninsula with all the modern amenities of camping. Camp close to Pictured Rocks National Lakeshore and Grand Island. Featuring full service hookups at All sites.