Juke Box trench - a valuable archive of late Pleistocene and Holocene stratigraphy in the Bonneville basin, Utah

2018 ◽  
Keyword(s):  
Late Pleistocene ◽  
Holocene Stratigraphy ◽  
Bonneville Basin

Late Pleistocene and early Holocene rivers and wetlands in the Bonneville basin of western North America

2003 ◽  
Vol 60 (2) ◽  
pp. 200-210 ◽  
Author(s):  
Charles G. Oviatt ◽  
David B. Madsen ◽  
Dave N. Schmitt
Keyword(s):  
Great Basin ◽  
Late Pleistocene ◽  
Theoretical Models ◽  
Coarse Sand ◽  
Early Holocene ◽  
River Channels ◽  
Human Occupation ◽  
Lake Bonneville ◽  
River Bed ◽  
Bonneville Basin

AbstractField investigations at Dugway Proving Ground in western Utah have produced new data on the chronology and human occupation of late Pleistocene and early Holocene lakes, rivers, and wetlands in the Lake Bonneville basin. We have classified paleo-river channels of these ages as “gravel channels” and “sand channels.” Gravel channels are straight to curved, digitate, and have abrupt bulbous ends. They are composed of fine gravel and coarse sand, and are topographically inverted (i.e., they stand higher than the surrounding mudflats). Sand channels are younger and sand filled, with well-developed meander-scroll morphology that is truncated by deflated mudflat surfaces. Gravel channels were formed by a river that originated as overflow from the Sevier basin along the Old River Bed during the late regressive phases of Lake Bonneville (after 12,500 and prior to 11,000 14C yr B.P.). Dated samples from sand channels and associated fluvial overbank and wetland deposits range in age from 11,000 to 8800 14C yr B.P., and are probably related to continued Sevier-basin overflow and to groundwater discharge. Paleoarchaic foragers occupied numerous sites on gravel-channel landforms and adjacent to sand channels in the extensive early Holocene wetland habitats. Reworking of tools and limited toolstone diversity is consistent with theoretical models suggesting Paleoarchaic foragers in the Old River Bed delta were less mobile than elsewhere in the Great Basin.

Late Pleistocene-Holocene Stratigraphy and Delta Progradation, the Mekong River Delta, South Vietnam

2001 ◽  
Vol 4 (4) ◽  
pp. 799-800 ◽  
Author(s):  
Thi Kim Oanh Ta ◽  
Van Lap Nguyen ◽  
Iwao Kobayashi ◽  
Masaaki Tateishi ◽  
Yoshiki Saito
Keyword(s):  
Late Pleistocene ◽  
River Delta ◽  
Mekong River ◽  
Mekong River Delta ◽  
South Vietnam ◽  
Delta Progradation ◽  
Holocene Stratigraphy

The Bonneville Estates Rockshelter rodent fauna and changes in Late Pleistocene–Middle Holocene climates and biogeography in the Northern Bonneville Basin, USA

2012 ◽  
Vol 78 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Dave N. Schmitt ◽  
Karen D. Lupo
Keyword(s):  
Late Pleistocene ◽  
Salt Lake ◽  
Taxonomic Diversity ◽  
Early Holocene ◽  
Pocket Gopher ◽  
Middle Holocene ◽  
Thomomys Talpoides ◽  
Neotoma Cinerea ◽  
Bonneville Basin ◽  
Desert Woodrats

AbstractExcavations at Bonneville Estates Rockshelter, Nevada recovered rodent remains from stratified deposits spanning the past ca. 12,500 14C yr BP (14,800 cal yr BP). Specimens from horizons dating to the late Pleistocene and early Holocene include species adapted to montane and moist and cool habitats, including yellow-bellied marmot (Marmota flaviventris) and bushy-tailed woodrat (Neotoma cinerea). Shortly after 9000 14C BP (10,200 cal yr BP) these mammals became locally extinct, or nearly so, taxonomic diversity declined, and the region became dominated by desert woodrats (Neotoma lepida) and other species well-adapted to xeric, low-elevation settings. The timing and nature of changes in the Bonneville Estates rodent fauna are similar to records reported from nearby Homestead and Camels Back caves and provide corroborative data on terminal Pleistocene–early Holocene environments and mammalian responses to middle Holocene desertification. Moreover, the presence of northern pocket gopher (Thomomys talpoides) at Bonneville Estates adds to a sparse regional record for that species and similar to Homestead Cave, it appears that the ca. 9500 14C yr BP (10,800 cal yr BP) replacement of the northern pocket gopher by Botta's pocket gopher in the Great Salt Lake Desert vicinity was also in response to climate change.

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