New evidence for an extended occupation of the Provo shoreline and implications for regional climate change, Pleistocene Lake Bonneville, Utah, USA

Godsey, Holly S.; Currey, Donald R.; Chan, Marjorie A.

doi:10.1016/j.yqres.2005.01.002

Cited by 92 publications

(109 citation statements)

References 27 publications

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“…Oviatt et al, 1992;Licciardi, 2001;Godsey et al, 2005Godsey et al, , 2011. This reliance is due to these shells being generally well preserved in beach ridges, and the fact that terrestrial macrofossils are usually absent in these sediments.…”

Section: Considerations When Interpreting Pluvial Highstands From Radmentioning

confidence: 99%

Temporal correspondence between pluvial lake highstands in the southwestern US and Heinrich Event 1

Munroe

Laabs

2012

J Quaternary Science

105

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Pluvial lakes were abundant in the southwestern United States during Pleistocene glaciations, particularly in the Great Basin. Many of these lakes occupied closed basins; therefore, fluctuations of their water surface elevations are valuable sources of paleoclimate information. Histories of the largest lakes are well constrained, whereas dozens of smaller lakes that were present in this region have received relatively little scientific attention. Given their dimensions, these smaller lakes were climatically sensitive and can offer important information about Quaternary climate variability. Here we present new ages for the highstands of three previously undated small lakes based on radiocarbon dating of gastropod shells recovered from beach ridges. These results are combined with other published and unpublished 14 C ages to yield an extensive compilation of highstand shoreline ages for lakes of all sizes throughout the southwestern US. The results indicate that although some lakes reached highstands during the Last Glacial Maximum, the strongest temporal correspondence is between highstands and Heinrich Event H1. These results are consistent with speleothem-based reconstructions of effective moisture in the southwestern US, which show increased precipitation during stadials of the last glacial cycle. Figure 1. (A) Map of pluvial lakes in the southwestern USA. Lake names are given along with highstand ages (median probability of the 2-sigma calibration range) in k cal a BP. Codes in parentheses refer to Fig. 3 and Tables 1-3. Analysis focused on highstands after 21k cal a BP; older highstands are listed without codes, and are not plotted in Fig. 3. Dates shown in purple fall during the latter part of the LGM, whereas dates shown in cyan fall during Heinrich Stadial 1. For clarity, only dated lakes are shown. The outline of the Great Basin is dashed. The Sierra Nevada (SN), San Bernadino (SB) and Wasatch Mountains (W) are labeled. (B) Schematic model of changes in the mean position of the Polar Jet Stream (PJS) and corresponding pluvial lake levels across the Great Basin for the Late LGM ($21-18k cal a BP) and HS-1 ($18-15k cal a BP).

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Section: Considerations When Interpreting Pluvial Highstands From Radmentioning

confidence: 99%

Temporal correspondence between pluvial lake highstands in the southwestern US and Heinrich Event 1

Munroe

Laabs

2012

J Quaternary Science

105

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“…B.P.) shallow lake and marsh resources were probably restricted to some of the valley bottoms (Benson & Thompson, 1987;Morrison, 1991;Oviatt, Currey, & Sack, 1992;Adams & Wesnousky, 1998;Godsey, Currey, & Chan, 2005;Oviatt et al, 2005). Evidence of low water tables and restricted water sources has been used to hypothesize an extensive "Clovis-age" drought that ended about 10,900 14 C B.P.…”

Section: Introductionmentioning

confidence: 99%

Late Pleistocene and Early Holocene lake‐level fluctuations in the Lahontan Basin, Nevada: Implications for the distribution of archaeological sites

et al. 2008

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The Great Basin of the western U.S. contains a rich record of late Pleistocene and Holocene lake-level fluctuations as well as an extensive record of human occupation during the same time frame. We compare spatial-temporal relationships between these records in the Lahontan basin to consider whether lake-level fluctuations across the Pleistocene-Holocene transition controlled distribution of archaeological sites. We use the reasonably well-dated archaeological record from caves and rockshelters as well as results from new pedestrian surveys to investigate this problem. Although lake levels probably reached maximum elevations of about 1230-1235 m in the different subbasins of Lahontan during the Younger Dryas (YD) period, the duration that the lakes occupied the highest levels was brief. Paleoindian and early Archaic archaeological sites are concentrated on somewhat lower and slightly younger shorelines ‫5221-0221ف(‬ m) that also date from the Younger Dryas period. This study suggests that Paleoindians often concentrated their activities adjacent to large lakes and wetland resources soon after they first entered the Great Basin.

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“…In the drainage calculations performed for this work, the Great Basin is split between the Colorado River and Columbia River drainage basins. In part, this is realistic: outflow from Lake Bonneville entered Columbia River between 18.2 ± 0.3 and 16.4 ± 0.2 ka, with limited and/or intermittent outflow continuing to 14.9 +0.3 −0.6 ka (12.6 ± 0.15 14 C ka) (synthesis of Godsey et al, 2011;McGee et al, 2012) (radiocarbon ages calibrated using IntCal13 (Reimer et al, 2013) with 2σ error). In part, this does not matter: a hydrologically closed basin must maintain a state in which precipitation equals evapotranspiration, and as such should not have a major effect on discharge calculations, outside of the aforementioned period of climate change during the end of the Pleistocene.…”

Section: Flow Routing and Accumulationmentioning

confidence: 99%

“…+0.3 −0.6 ka (12.6 ± 0.15 14 C ka) (Godsey et al, 2011;Reimer et al, 2013), when waters from Lake Bonneville -part of the Great Basin -flowed into the Columbia River basin.…”

Section: Drainage Basins and River Dischargementioning

confidence: 99%

“…Lake Bonneville routed a portion of flow from the Great Basin to the Columbia River from 18.2 ± 0.3 to 16.4 ± 0.2 ka (Gilbert, 1890;Godsey et al, 2005Godsey et al, , 2011McGee et al, 2012), including a massive < 1-year flood at ∼ 17.5 or ∼ 18 ka that resulted from rapid ∼ 100 m incision of a natural dam of alluvium (Jarrett and Malde, 1987;Godsey et al, 2005Godsey et al, , 2011Oviatt, 2015). The terrestrial record contains evidence for later, smaller outflows from glacial Lake Missoula 15.1-12.6 ka (Hanson et al, 2012), and intermittent overflow inputs from Lake Bonneville from 16.4 ± 0.2 to 14.9 +0.3 −0.6 ka (synthesis of Godsey et al, 2011;McGee et al, 2012).…”

Section: Drainage Histories By Rivermentioning

confidence: 99%

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Reconstruction of North American drainage basins and river discharge since the Last Glacial Maximum

Wickert

2016

Earth Surf. Dynam.

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Abstract. Over the last glacial cycle, ice sheets and the resultant glacial isostatic adjustment (GIA) rearranged river systems. As these riverine threads that tied the ice sheets to the sea were stretched, severed, and restructured, they also shrank and swelled with the pulse of meltwater inputs and time-varying drainage basin areas, and sometimes delivered enough meltwater to the oceans in the right places to influence global climate. Here I present a general method to compute past river flow paths, drainage basin geometries, and river discharges, by combining models of past ice sheets, glacial isostatic adjustment, and climate. The result is a time series of synthetic paleohydrographs and drainage basin maps from the Last Glacial Maximum to present for nine major drainage basins -the Mississippi, Rio Grande, Colorado, Columbia, Mackenzie, Hudson Bay, Saint Lawrence, Hudson, and Susquehanna/Chesapeake Bay. These are based on five published reconstructions of the North American ice sheets. I compare these maps with drainage reconstructions and discharge histories based on a review of observational evidence, including river deposits and terraces, isotopic records, mineral provenance markers, glacial moraine histories, and evidence of ice stream and tunnel valley flow directions. The sharp boundaries of the reconstructed past drainage basins complement the flexurally smoothed GIA signal that is more often used to validate ice-sheet reconstructions, and provide a complementary framework to reduce nonuniqueness in model reconstructions of the North American ice-sheet complex.

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New evidence for an extended occupation of the Provo shoreline and implications for regional climate change, Pleistocene Lake Bonneville, Utah, USA

Cited by 92 publications

References 27 publications

Temporal correspondence between pluvial lake highstands in the southwestern US and Heinrich Event 1

Temporal correspondence between pluvial lake highstands in the southwestern US and Heinrich Event 1

Late Pleistocene and Early Holocene lake‐level fluctuations in the Lahontan Basin, Nevada: Implications for the distribution of archaeological sites

Reconstruction of North American drainage basins and river discharge since the Last Glacial Maximum

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