| Abstract: | Detrital amber pebbles and granules have been discovered in Upper Triassic strata on the Colorado Plateau. Although amber previously has been reported from Pennsylvanian, Jurassic, Cretaceous, and Tertiary strata, we know of no other reported Triassic occurrence in North America or the Western Hemisphere. The new discovered occurrences of amber are at two localities in the lower part of the Petrified Forest Member of the Upper Triassic Chinle Formation in Petrified Forest National Park, Arizona. The paper coals and carbonaceous paper shales containing the amber also contain fossil palynomorph assemblages that indicate a late Carnian age for these occurrences. -Authors |
| Genre: | Article |
| ProdID: | 70016766 |
| Citation Author: | Litwin, R. J.; Ash, S. R. |
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| Citation End Page: | 276 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geology |
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| Citation Number Of Pages: | 4 |
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| Citation Search Results Text: | First early Mesozoic amber in the Western Hemisphere; 1991; Article; Journal; Geology; Litwin, R. J.; Ash, S. R. |
| Citation Start Page: | 273 |
| Citation Volume: | 19 |
| Citation Year: | 1991 |
| Type: | citation/reference |
| Text: | First early Mesozoic amber in the Western Hemisphere; 1991; Article; Journal; Geology; Litwin, R. J.; Ash, S. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1991 00:00 -0600 |
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