| Abstract: | The Angayucham terrane of north-central Alaska (immediately S of the Brooks Range) is a large (ca. 500 km E-W), allochthonous complex of Devonian to Lower Jurassic pillow basalt, diabase sills, gabbro plutons, and chert. The mafic rocks are transitional normal-to-enriched, mid-ocean-ridge (MORB) type tholeiites (TiO2 1.2-3.4%, Nb 7-23 ppm, Ta 0.24-1.08 ppm, Zr 69-214 ppm, and light REE‘s slightly depleted to moderately enriched). Geologic and geochemical constraints indicate that Angayucham terrane is the upper "skin‘ (ca. 3-4 km thick) of a long-lived (ca. 170-200 ma) oceanic plateau whose basaltic-gabbroic rocks are like those of seamounts of the East Pacific Rise. -Authors |
| Genre: | Article |
| ProdID: | 70014429 |
| Citation Author: | Barker, F.; Jones, D. L.; Budahn, J. R.; Coney, P. J. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 374 |
| Citation Issue: | 3 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geology |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 7 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Ocean plateau-seamount origin of basaltic rocks, Angayucham terrane, central Alaska; 1988; Article; Journal; Journal of Geology; Barker, F.; Jones, D. L.; Budahn, J. R.; Coney, P. J. |
| Citation Start Page: | 368 |
| Citation Volume: | 96 |
| Citation Year: | 1988 |
| Type: | citation/reference |
| Text: | Ocean plateau-seamount origin of basaltic rocks, Angayucham terrane, central Alaska; 1988; Article; Journal; Journal of Geology; Barker, F.; Jones, D. L.; Budahn, J. R.; Coney, P. J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1988 00:00 -0600 |
| Publisher: | |
