Early Holocene pinyon (Pinus monophylla) in the northeastern Great Basin

1990 ◽  
Vol 33 (1) ◽  
pp. 94-101 ◽  
Author(s):  
David B. Madsen ◽  
David Rhode
Keyword(s):  
Great Basin ◽  
Late Quaternary ◽  
Early Holocene ◽  
Hunter Gatherers ◽  
Pinus Monophylla ◽  
East Central ◽  
Lake Bonneville ◽  
Fine Grained ◽  
Pine Nut ◽  
Human Use

AbstractFine-grained excavation and analysis of a stratigraphic column from Danger Cave, northeastern Great Basin, suggests prehistoric hunter-gatherers were collecting and using singleleaf pinyon (Pinus monophylla) near the site for at least the last 7500 yr. Human use of the cave began after the retreat of Lake Bonneville from the Gilbert level, shortly before 10,000 yr B.P. In stratum 9, culturally deposited pine nut hulls appear in the sequence by about 7900 yr B.P. and are continuously present thereafter. A hull fragment in stratum 10 is directly dated to 7410 ± 120 yr B.P. These dates are at least 2000 yr earlier than expected by extrapolation to macrofossil records from the east-central and central Great Basin, and necessitate some revision of current biogeographical models of late Quaternary pinyon migration.

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.

scholarly journals Glacial landform-sediment assemblages in the Canadian High Arctic and their implications for late Quaternary glaciations

1999 ◽  
Vol 28 ◽  
pp. 195-201 ◽  
Author(s):  
C. Ó Cofaigh ◽  
D.S. Lemman ◽  
D.J.A. Evans ◽  
J. Bednarski
Keyword(s):  
Thermal Regime ◽  
Late Quaternary ◽  
Thermal Conditions ◽  
High Arctic ◽  
Early Holocene ◽  
Canadian High Arctic ◽  
Fine Grained ◽  
Quaternary Glaciation ◽  
The Last Glacial Maximum ◽  
The Last Glacial

AbstractModern terrestrial glaciers in the Canadian High Arctic range from polythermal to cold-based. Where polythermal glaciers override thick unconsolidated sediment, longitudinal compression and glaciotectonic thrusting produce thrust-block moraines. In contrast, the dominant geomorphic record of cold-based glaciers consists of lateral and proglacial meltwater channels. Geomorphic and sedimentary evidence indicates that late Quaternary fiord glaciers were also characterized by variations in basal thermal regime. Erratic dispersal trains and striated bedrock record the flow of warm- based ice during the Last Glacial Maximum. Emergent grounding-line fans and morainal banks, deposited during deglaciation, consist of heterogeneous glaciomarine deposits that record well-developed subglacial drainage and high sedimentation rates. However, in other fiords, subaqueous outwash and fine-grained glaciomarine deposits are absent and deglaciation is recorded by lateral meltwater channels graded to raised glaciomarine deltas, suggesting these glaciers were predominantly cold-based during retreat. Regionally, deglacial depocentres are located at pinning points within fiords and a prominent belt of glaciogenic landforms at fiord heads records stabilization of ice margins during early Holocene retreat, rather than the limit of late Quaternary glaciation. Collectively, these observations refute previous reconstructions which inferred a climatically controlled switch from cold- to warm-based thermal conditions in fiord glaciers during early Holocene deglaciation, and indicate that the dominant controls on thermal regime were glaciological.

Late Quaternary Reptiles from Two Caves in the East-Central Great Basin

1989 ◽  
Vol 23 (2) ◽  
pp. 186 ◽  
Author(s):  
Jim I. Mead ◽  
Timothy H. Heaton ◽  
Emilee M. Mead
Keyword(s):  
Great Basin ◽  
Late Quaternary ◽  
East Central

Late Quaternary Environmental Changes in the Upper Las Vegas Valley, Nevada

1986 ◽  
Vol 26 (3) ◽  
pp. 340-357 ◽  
Author(s):  
Jay Quade
Keyword(s):  
Great Basin ◽  
Environmental Changes ◽  
Las Vegas ◽  
Late Quaternary ◽  
Vegetation Changes ◽  
Fine Grained ◽  
Lacustrine Deposits ◽  
Las Vegas Valley ◽  
Carbonate Cementation ◽  
Late Pleistocene To Holocene

Five stratigraphic units and five soils of late Pleistocene to Holocene age crop out in dissected badlands on Corn Creek Flat, 30 km northwest of Las Vegas, Nevada, and at Tule Springs, nearer to Las Vegas. The record is dominantly fluvial but contains evidence of several moister, marsh-forming periods: the oldest (Unit B) dates perhaps to the middle Wisconsin, and the more widespread Unit D falls between 30,000 and 15,000 yr B.P. Unit D therefore correlates with pluvial maximum lacustrine deposits elsewhere in the Great Basin. Standing water was not of sufficient depth or extent during either period to form lake strandlines. Between 14,000 and 7200 yr B.P. (Unit E), standing surface water gradually decreased, a trend also apparent in Great Basin pluvial lake chronologies during the same period. Groundwater carbonate cementation and burrowing by cicadas (Cicadae) accompany the moist-phase units. After 7200 yr B.P., increased wind action, decreased biotic activity, and at least 25 m of water-table lowering accompanied widespread erosion of older fine-grained deposits. Based on pack-rat midden and pollen evidence, this coincides with major vegetation changes in the valley, from sagebrush-dominated steppe to lower Mohave desertscrub.

MODELING CLIMATE CONSTRAINTS ON THE FORMATION OF PLUVIAL LAKE BONNEVILLE IN THE GREAT BASIN, USA

2019 ◽  
Author(s):  
Bryce K. Belanger ◽  
◽  
William H. Amidon ◽  
Benjamin Laabs ◽  
Jeffrey S. Munroe
Keyword(s):  
Great Basin ◽  
Lake Bonneville

Mesolithic mortuary ritual at Franchthi Cave, Greece

Antiquity ◽  
1995 ◽  
Vol 69 (263) ◽  
pp. 270-289 ◽  
Author(s):  
Tracey Cullen
Keyword(s):  
Human Remains ◽  
Early Holocene ◽  
Hunter Gatherers ◽  
Burial Practices ◽  
Mortuary Ritual ◽  
The Mediterranean ◽  
Southern Greece ◽  
Mesolithic Burials

Mesolithic sites are rare in the Aegean, and Mesolithic burials are uncommon throughout Europe. The Mesolithic human remains from Franchthi Cave, that remarkable, deeply stratified site in southern Greece, offer a rare glimpse into the burial practices of early Holocene hunter-gatherers of the Mediterranean.

Modelling climate constraints on the formation of pluvial Lake Bonneville in the Great Basin, United States

2021 ◽  
Author(s):  
Bryce K. Belanger ◽  
William H. Amidon ◽  
Benjamin J. C. Laabs ◽  
Jeffrey S. Munroe ◽  
Brendon J. Quirk
Keyword(s):  
United States ◽  
Great Basin ◽  
Lake Bonneville
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