| Abstract: | The Arctic prospect, south central Brooks Range, is among the 30 largest of 508 volcanic-hosted massive sulphide deposits in the world. The massive sulphide lenses are interlayered with graphitic schist between metamorphosed rhyolite porphyries in Middle Devonian to early Mississippian metamorphosed volcanic, volcaniclastic and sedimentary rocks. Hydrothermal alteration is of three types: chloritic, phyllic s.l., and pyrite-phengite, each type strata-distinctively and respectively below, in, and above the sulphides. Maximum alteration conforms with metal zoning in the sulfides to suggest predominantly northwestward dispersal from a linear vent area in the elongate basin containing the deposit.-G.J.N. |
| Genre: | Article |
| ProdID: | 70015178 |
| Citation Author: | Schmidt, J. M. |
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| Citation End Page: | 1643 |
| Citation Issue: | 7 |
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| Citation Language: | English |
| Citation Larger Work Title: | Economic Geology |
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| Citation Number Of Pages: | 25 |
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| Citation Search Results Text: | Stratigraphic setting and mineralogy of the Arctic volcanogenic massive sulfide prospect, Ambler district, Alaska.; 1986; Article; Journal; Economic Geology; Schmidt, J. M. |
| Citation Start Page: | 1619 |
| Citation Volume: | 81 |
| Citation Year: | 1986 |
| Type: | citation/reference |
| Text: | Stratigraphic setting and mineralogy of the Arctic volcanogenic massive sulfide prospect, Ambler district, Alaska.; 1986; Article; Journal; Economic Geology; Schmidt, J. M. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1986 00:00 -0600 |
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