Late Proterozoic paleogeography of the eastern Great Basin
Conference
·
· AAPG Bulletin (American Association of Petroleum Geologists); (United States)
OSTI ID:5171278
- Lamont-Doherty Geological Observatory, Palisades, NY (United States)
Detailed facies interpretation, sequence stratigraphy, and palinspastic reconstruction lead to insights into the Late Proterozoic paleogeographic evolution of the eastern Great Basin. Palinspastic reconstruction of Mesozoic to early Cenozoic crustal shortening and middle to late Cenozoic crustal extension indicate that the late Proterozoic basin of the western United States was only about 60% of its present-day width. More than 3 km of late Proterozoic predominantly siliciclastic strata were deposited in this basin in southeastern Idaho, western Utah, and eastern Nevada prior to continental separation in the latest Proterozoic or Early Cambrian, and represent a variety of depositional environments including basinal marine, shallow marine, braid delta, braided fluvial, and eolian. These strata can be divided into four depositional sequences bounded by regional unconformities, or sequence boundaries, that permit regional time correlation.
- OSTI ID:
- 5171278
- Report Number(s):
- CONF-9103128--
- Conference Information:
- Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Journal Volume: 75:2
- Country of Publication:
- United States
- Language:
- English
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Wed Mar 31 23:00:00 EST 1993
· Geological Society of America, Abstracts with Programs; (United States)
·
OSTI ID:5022941