A Top-to-Bottom Luminescence-Based Chronology for the Post-LGM Regression of a Great Basin Pluvial Lake
We applied luminescence dating to a suite of shorelines constructed by pluvial Lake Clover in northeastern Nevada, USA during the last glacial cycle. At its maximum extent, the lake covered 740 km<sup>2</sup> with a mean depth of 16 m and a water volume of 13 km<sup>3</sup>....
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Quaternary |
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| Online Access: | https://www.mdpi.com/2571-550X/3/2/11 |
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| author | Jeffrey S. Munroe Caleb K. Walcott William H. Amidon Joshua D. Landis |
| author_facet | Jeffrey S. Munroe Caleb K. Walcott William H. Amidon Joshua D. Landis |
| author_sort | Jeffrey S. Munroe |
| collection | DOAJ |
| description | We applied luminescence dating to a suite of shorelines constructed by pluvial Lake Clover in northeastern Nevada, USA during the last glacial cycle. At its maximum extent, the lake covered 740 km<sup>2</sup> with a mean depth of 16 m and a water volume of 13 km<sup>3</sup>. In the north-central sector of the lake basin, 10 obvious beach ridges extend from the highstand to the lowest shoreline over a horizontal distance of ~1.5 km, representing a lake area decrease of 35%. These ridges are primarily composed of sandy gravel and rise ~1.0 m above the alluvial fan surface on which they are superposed. Single grain luminescence dating of K-feldspar using the pIRIR SAR (post-infrared infrared single-aliquot regenerative dose) protocol, corroborated by SAR dating of quartz, indicates that the highstand shoreline was constructed ca. 16–17 ka during Heinrich Stadial I (Greenland Stadial 2, GS-2), matching <sup>14</sup>C age control for this shoreline elsewhere in the basin. The lake regressed rapidly during the Bølling/Allerød (GI-1), before the rate of regression slowed during the Younger Dryas interval (GS-1). The lowest shoreline was constructed ca. 10 ka. Persistence of Lake Clover into the early Holocene may reflect enhanced monsoonal precipitation driven by the summer insolation maximum. |
| first_indexed | 2024-03-10T20:26:20Z |
| format | Article |
| id | doaj.art-9d1bc978356849aba3eebf37f9779464 |
| institution | Directory Open Access Journal |
| issn | 2571-550X |
| language | English |
| last_indexed | 2024-03-10T20:26:20Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Quaternary |
| spelling | doaj.art-9d1bc978356849aba3eebf37f97794642023-11-19T21:46:54ZengMDPI AGQuaternary2571-550X2020-04-01321110.3390/quat3020011A Top-to-Bottom Luminescence-Based Chronology for the Post-LGM Regression of a Great Basin Pluvial LakeJeffrey S. Munroe0Caleb K. Walcott1William H. Amidon2Joshua D. Landis3Geology Department, Middlebury College, Middlebury, VT 05753, USAGeology Department, Middlebury College, Middlebury, VT 05753, USAGeology Department, Middlebury College, Middlebury, VT 05753, USADepartment of Earth Sciences, Dartmouth College, Hanover, NH 03755, USAWe applied luminescence dating to a suite of shorelines constructed by pluvial Lake Clover in northeastern Nevada, USA during the last glacial cycle. At its maximum extent, the lake covered 740 km<sup>2</sup> with a mean depth of 16 m and a water volume of 13 km<sup>3</sup>. In the north-central sector of the lake basin, 10 obvious beach ridges extend from the highstand to the lowest shoreline over a horizontal distance of ~1.5 km, representing a lake area decrease of 35%. These ridges are primarily composed of sandy gravel and rise ~1.0 m above the alluvial fan surface on which they are superposed. Single grain luminescence dating of K-feldspar using the pIRIR SAR (post-infrared infrared single-aliquot regenerative dose) protocol, corroborated by SAR dating of quartz, indicates that the highstand shoreline was constructed ca. 16–17 ka during Heinrich Stadial I (Greenland Stadial 2, GS-2), matching <sup>14</sup>C age control for this shoreline elsewhere in the basin. The lake regressed rapidly during the Bølling/Allerød (GI-1), before the rate of regression slowed during the Younger Dryas interval (GS-1). The lowest shoreline was constructed ca. 10 ka. Persistence of Lake Clover into the early Holocene may reflect enhanced monsoonal precipitation driven by the summer insolation maximum.https://www.mdpi.com/2571-550X/3/2/11pluvial lakehydroclimateGreat Basinluminescence datingNevada |
| spellingShingle | Jeffrey S. Munroe Caleb K. Walcott William H. Amidon Joshua D. Landis A Top-to-Bottom Luminescence-Based Chronology for the Post-LGM Regression of a Great Basin Pluvial Lake Quaternary pluvial lake hydroclimate Great Basin luminescence dating Nevada |
| title | A Top-to-Bottom Luminescence-Based Chronology for the Post-LGM Regression of a Great Basin Pluvial Lake |
| title_full | A Top-to-Bottom Luminescence-Based Chronology for the Post-LGM Regression of a Great Basin Pluvial Lake |
| title_fullStr | A Top-to-Bottom Luminescence-Based Chronology for the Post-LGM Regression of a Great Basin Pluvial Lake |
| title_full_unstemmed | A Top-to-Bottom Luminescence-Based Chronology for the Post-LGM Regression of a Great Basin Pluvial Lake |
| title_short | A Top-to-Bottom Luminescence-Based Chronology for the Post-LGM Regression of a Great Basin Pluvial Lake |
| title_sort | top to bottom luminescence based chronology for the post lgm regression of a great basin pluvial lake |
| topic | pluvial lake hydroclimate Great Basin luminescence dating Nevada |
| url | https://www.mdpi.com/2571-550X/3/2/11 |
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