| Abstract: | The Dunbar dome in NE Wisconsin is a critical structural feature in the early Proterozoic Penokean orogen. We interpret the dome as being a large-scale, fold-interference structure resulting from polydeformation modified by diapirism. The Wisconsin magmatic terrane, as represented by the rocks in the Dunbar dome, differs from the epicratonic, early Proterozoic sedimentary-volcanic sequence (Marquette Range Supergroup) in Michigan to the N, in stratigraphy, structure and volume and composition of igneous rocks. We interpret the Wisconsin magmatic terrane as an oceanic-arc complex that was sutured to the N American continent during development of the Penokean orogen. Similar interpretations based on broad regional observations have been proposed previously.-from Authors |
| Genre: | Article |
| ProdID: | 70012265 |
| Citation Author: | Sims, P. K.; Peterman, Z. E.; Schulz, K. J. |
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| Citation End Page: | 1112 |
| Citation Issue: | 9 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geological Society of America Bulletin |
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| Citation Number Of Pages: | 12 |
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| Citation Search Results Text: | The Dunbar gneiss- granitoid dome: implications for early Proterozoic tectonic evolution of northern Wisconsin ( USA).; 1985; Article; Journal; Geological Society of America Bulletin; Sims, P. K.; Peterman, Z. E.; Schulz, K. J. |
| Citation Start Page: | 1101 |
| Citation Volume: | 96 |
| Citation Year: | 1985 |
| Type: | citation/reference |
| Text: | The Dunbar gneiss- granitoid dome: implications for early Proterozoic tectonic evolution of northern Wisconsin ( USA).; 1985; Article; Journal; Geological Society of America Bulletin; Sims, P. K.; Peterman, Z. E.; Schulz, K. J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1985 00:00 -0600 |
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