| Abstract: | Death Valley, a complex tectonic and hydrologic basin, was cored from its lowest surface elevation to a depth of 186 m. The sediments range from bedded primary halite to black muds. Continental ostracodes found in the black muds indicate that those sediments were deposited in a variety of hydrologic settings ranging from deep, relatively fresh water to shallow saline lakes to spring discharge supported wetlands. The alkaline-enriched, calcium-depleted paleolake waters indicate extrabasinal streamflow and basin-margin spring discharge. The alkaline-depleted, calcium-enriched paleowetland waters indicate intrabasinal spring discharge. During Marine Isotope Stage 6 (MIS 6, ca. 180-140 ka) the hydrologic settings were highly variable, implying that complex relations existed between climate and basin hydrology. Termination II (MIS 6 to MIS 5E) was a complex multicyclic sequence of paleoenvironments, implying that climates oscillated between high and low effective moisture. MIS 4 (ca. 73-61 ka) was a spring discharge supported wetland complex. During MIS 2 (ca. 20-12 ka) the hydrologic settings were variable, although they are not fully understood because some black muds deposited during that time were lost during coring. ?? 2005 Geological Society of America. |
| Genre: | Article |
| ProdID: | 70027705 |
| Citation Author: | Forester, R. M.; Lowenstein, T. K.; Spencer, R. J. |
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| Citation End Page: | 1386 |
| Citation Issue: | 11-12 |
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| Citation Language: | English |
| Citation Larger Work Title: | Bulletin of the Geological Society of America |
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| Citation Number Of Pages: | 8 |
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| Citation Search Results Text: | An ostracode based paleolimnologic and paleohydrologic history of Death Valley: 200 to 0 ka; 2005; Article; Journal; Bulletin of the Geological Society of America; Forester, R. M.; Lowenstein, T. K.; Spencer, R. J. |
| Citation Start Page: | 1379 |
| Citation Volume: | 117 |
| Citation Year: | 2005 |
| Type: | citation/reference |
| Text: | An ostracode based paleolimnologic and paleohydrologic history of Death Valley: 200 to 0 ka; 2005; Article; Journal; Bulletin of the Geological Society of America; Forester, R. M.; Lowenstein, T. K.; Spencer, R. J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1130/B25637.1 |
| Date Other: | Sat, 1 Jan 2005 00:00 -0600 |
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