Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.quascirev.2015.10.037 |
Holocene paleoclimate history of Fallen Leaf Lake, CA., from geochemistry and sedimentology of well-dated sediment cores | |
Noble, Paula J.1; Ball, G. Ian2; Zimmerman, Susan H.3; Maloney, Jillian4; Smith, Shane B.1; Kent, Graham5,7; Adams, Kenneth D.6; Karlin, Robert E.1; Driscoll, Neal7 | |
通讯作者 | Noble, Paula J. |
来源期刊 | QUATERNARY SCIENCE REVIEWS |
ISSN | 0277-3791 |
出版年 | 2016 |
卷号 | 131页码:193-210 |
英文摘要 | Millennial-scale shifts in aridity patterns have been documented during the Holocene in the western United States, yet the precise timing, severity, and regional extent of these shifts prompts further study. We present lake sediment core data from Fallen Leaf Lake, a subalpine system at the southern end of the Lake Tahoe basin for which 80% of the contemporary inflow is derived from snowpack delivered by Pacific frontal storm systems. A high quality age model has been constructed using C-14 ages on plant macrofossils, Pb-210, and the Tsoyowata tephra datum (7.74-7.95 cal kyr BP). One core captures the transition from the Late Tioga-younger Dryas glaciolacustrine package to laminated opaline clay at 11.48 cal kyr BR Early Holocene sedimentation rates are relatively high (similar to 1.9 mm/year) and cooler winter temperatures are inferred by the presence of pebbles interpreted to be transported out into the lake via shore ice. There is a geochemically distinct interval from similar to 4.71 to 3.65 cal kyr BP that is interpreted as a late Holocene neopluvial, characterized by depleted delta C-13 and lower C:N that point to reduced runoff of terrigenous organic matter, increased winter precipitation, and increased algal productivity. The largest Holocene signal in the cores occurs at the end of the neopluvial, at 3.65 cal kyr BP, and marks a shift into a climate state with variable precipitation, yet is overall more arid than the neopluvial. This new climate state persists for similar to 3 ka, until the Little Ice Age. Low sedimentation rates (0.5 mm/year), the homogeneous opaline sediment, and steadily increasing contributions of terrestrial vs. algal organic matter in these cores suggest that the lowstand state of Fallen Leaf Lake may have been the norm from 3.65 to 0.55 cal kyr BP, punctuated by short term high precipitation years or multi-year intervals capable of rapid short duration lake level rise. Fallen Leaf Lake is strongly influenced by changes in winter precipitation and temperature, manifested largely by the geochemical proxies, and highlights unique advantages of subalpine lakes in regional paleoclimate reconstructions. (C) 2015 Elsevier Ltd. All rights reserved. |
英文关键词 | Holocene Lake cores Geochemistry Paleoclimate Lake Tahoe basin Great Basin Neopluvial |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000367490200013 |
WOS关键词 | DOLLAR POINT FAULT ; SIERRA-NEVADA ; PYRAMID LAKE ; TAHOE BASIN ; QUATERNARY HISTORY ; EXTENDED DROUGHT ; LATE PLEISTOCENE ; WALKER LAKE ; GREAT-BASIN ; MONO LAKE |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/195846 |
作者单位 | 1.Univ Nevada, Dept Geol Sci & Engn, Reno, NV 89557 USA; 2.Chevron Energy Technol Co, Houston, TX 77002 USA; 3.Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA; 4.San Diego State Univ, Dept Geol Sci, San Diego, CA 92182 USA; 5.Univ Nevada, Nevada Seismol Lab, Reno, NV 89557 USA; 6.Desert Res Inst, Div Earth & Ecosyst Sci, Reno, NV 89512 USA; 7.Univ Calif San Diego, Scripps Inst Oceanog, Geosci Res Div, La Jolla, CA 92093 USA |
推荐引用方式 GB/T 7714 | Noble, Paula J.,Ball, G. Ian,Zimmerman, Susan H.,et al. Holocene paleoclimate history of Fallen Leaf Lake, CA., from geochemistry and sedimentology of well-dated sediment cores[J],2016,131:193-210. |
APA | Noble, Paula J..,Ball, G. Ian.,Zimmerman, Susan H..,Maloney, Jillian.,Smith, Shane B..,...&Driscoll, Neal.(2016).Holocene paleoclimate history of Fallen Leaf Lake, CA., from geochemistry and sedimentology of well-dated sediment cores.QUATERNARY SCIENCE REVIEWS,131,193-210. |
MLA | Noble, Paula J.,et al."Holocene paleoclimate history of Fallen Leaf Lake, CA., from geochemistry and sedimentology of well-dated sediment cores".QUATERNARY SCIENCE REVIEWS 131(2016):193-210. |
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