Thermoluminescence Dating of Loess and Tephra from Fairbanks, Alaska
Thermoluminescence Dating of Loess and Tephra from Fairbanks, Alaska
批准号:
9018602
负责人:
Glenn Berger
金额:
$7.71万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1991
资助国家:
美国
项目状态:
已结题
起止时间:
1991-03-01 至 1995-02-28
中文摘要
没有准确和连续的年代学存在于140ka的老乌鸦Tephra之上和阿拉斯加中部最古老的C-14年代(约35ka)之下的黄土和Tephra。相关的地层单位(金溪建造和等值黄土,以及下伏的上金山黄土)主要是带有互层不连续的苔藓和一些有机层的黄土。这些沉积物在大约30-140ka之间缺乏准确的沉积年龄,使得对当地和区域的古环境和古生物记录的解释含糊不清。因此,这项提议试图通过对费尔班克斯附近5个地点广泛分布的黄土和偶尔夹层的盖夫拉进行热释光(TL)测年,来建立这一时间范围内这些沉积物的第一个可靠的年代学。还需要额外的实验室设备,以便在该实验室有效地执行该项目和其他热释光测年项目。这项研究将证明热释光测年的可靠性,并获得阿拉斯加关键地质区全新世和威斯康星州黄土和特弗拉的热释光年龄。
英文摘要
An accurate and continuous chronology does not exist for the loess and tephra overlying the 140ka-old Old Crow tephra and underlying the oldest C-14 dated (ca 35ka) beds in central Alaska. The relevant stratigraphic units (Goldstream Formation and equivalent loess, and underlying upper Gold Hill Loess) are dominantly loess with interbedded discontinuous tephra and some organic layers. The lack of accurate deposition ages for these sediments in the time period ca. 30-140ka makes interpretation of the local and regional paleoenvironmental and paleontological records ambiguous. This proposal therefore seeks to develop the first firm chronology for these sediments in this time range by thermoluminescence (TL) dating of the widespread loess and occasional interbedded tephra from 5 sites near Fairbanks. Additional laboratory equipment is also requested to permit the efficient execution of this and other TL dating projects in this laboratory. This research will demonstrate the reliability of TL dating and obtain TL dates of Holocene and Wisconsin loess and tephra in a key geologic area of Alaska.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
EAGER: Single-grain Optical Dating of Debris-flow Fans
-
批准号:1015665
-
项目类别:Standard Grant
-
资助金额:$2.04万
-
财政年份:2010
-
负责人:Glenn Berger
-
依托单位:
Luminescence Sediment Dating of Pleistocene Hominin and Tool Sites at Atapuerca, Spain
-
批准号:0841059
-
项目类别:Standard Grant
-
资助金额:$12.9万
-
财政年份:2009
-
负责人:Glenn Berger
-
依托单位:
Constructing a Dating Tool for the last 100 kyr of Arctic Ocean Sediments: Extended Photonic Dating Tests and Applications using HOTRAX05 Cores
-
批准号:0612950
-
项目类别:Standard Grant
-
资助金额:$24.61万
-
财政年份:2006
-
负责人:Glenn Berger
-
依托单位:
Acquisition of Single-grain-luminescence-dating Instrument Systems
-
批准号:0619873
-
项目类别:Standard Grant
-
资助金额:$0.0万
-
财政年份:2006
-
负责人:Glenn Berger
-
依托单位:
Collaborative Research: Trans-Arctic 2005 Expedition for Development of a Pan-Arctic Stratigraphy and Paleoclimate Record
-
批准号:0352336
-
项目类别:Standard Grant
-
资助金额:$0.0万
-
财政年份:2004
-
负责人:Glenn Berger
-
依托单位:
Collaborative Research: Millennial Scale Fluctuations of Dry Valleys Lakes: Implications for Regional Climate Variability and the Interhemispheric (a)Synchrony of Climate Change
-
批准号:0124049
-
项目类别:Continuing Grant
-
资助金额:$0.0万
-
财政年份:2002
-
负责人:Glenn Berger
-
依托单位:
Ostracode-Shell Luminescence Dating for Quaternary Deposits
-
批准号:0087827
-
项目类别:Standard Grant
-
资助金额:$14.05万
-
财政年份:2001
-
负责人:Glenn Berger
-
依托单位:
Collaborative Research: Centennial-to-Millennial-Scale Climatic Fluctuations in Northeast Siberia during the Last Glacial Cycle
-
批准号:0117107
-
项目类别:Standard Grant
-
资助金额:$2.58万
-
财政年份:2001
-
负责人:Glenn Berger
-
依托单位:
Tenth International Conference on Luminescence and Electron-Spin-Resonance Dating; Reno, Nevada; June 24-28, 2002
-
批准号:0120726
-
项目类别:Standard Grant
-
资助金额:$3.29万
-
财政年份:2001
-
负责人:Glenn Berger
-
依托单位:
The Nature of Late Pleistocence Climate Ameliorations in Eastern Beringia
-
批准号:0002361
-
项目类别:Continuing Grant
-
资助金额:$9.9万
-
财政年份:2000
-
负责人:Glenn Berger
-
依托单位:
Luminescence Timing of Paleoenvironmental Changes in Quaternary Lake Sediments from the Arctic Taymyr Peninsula, Siberia
-
批准号:9909686
-
项目类别:Standard Grant
-
资助金额:$7.5万
-
财政年份:2000
-
负责人:Glenn Berger
-
依托单位:
Collaborative Research: Development of a Luminescence Dating Capability for Antarctic Glaciomarine Sediments: Tests of Signal Zeroing at the Antarctic Pennisula
-
批准号:9909665
-
项目类别:Continuing Grant
-
资助金额:$0.0万
-
财政年份:2000
-
负责人:Glenn Berger
-
依托单位:
Optical Dating Tests of Quaternary Sediments from the Central Arctic Ocean
-
批准号:9818070
-
项目类别:Continuing Grant
-
资助金额:$12.43万
-
财政年份:1999
-
负责人:Glenn Berger
-
依托单位:
Acquisition of Equipment to Expand a Luminescence Dating Laboratory
-
批准号:9725531
-
项目类别:Standard Grant
-
资助金额:$4.0万
-
财政年份:1998
-
负责人:Glenn Berger
-
依托单位:
Application of Optical Dating to Fossil and Tool-Bearing Cave Sediments at Atapuerca, Spain
-
批准号:9805174
-
项目类别:Standard Grant
-
资助金额:$10.3万
-
财政年份:1998
-
负责人:Glenn Berger
-
依托单位:
Improving the Precision and Extending the Age Range of Luminescence Dating of Pleistocene Sediment
-
批准号:9809354
-
项目类别:Continuing Grant
-
资助金额:$15.17万
-
财政年份:1998
-
负责人:Glenn Berger
-
依托单位:
Tests for Green-Line Laser Stimulated Luminescence from Volcanic Glass Shards
-
批准号:9628349
-
项目类别:Standard Grant
-
资助金额:$3.73万
-
财政年份:1996
-
负责人:Glenn Berger
-
依托单位:
Thermoluminescence Dating of Loess from South Island, New Zealand
-
批准号:9496253
-
项目类别:Standard Grant
-
资助金额:$1.6万
-
财政年份:1994
-
负责人:Glenn Berger
-
依托单位:
Thermoluminescence Dating Studies of Lake Cores from Alaska
-
批准号:9496237
-
项目类别:Continuing Grant
-
资助金额:$3.38万
-
财政年份:1994
-
负责人:Glenn Berger
-
依托单位:
Acquisition of Equipment to Expand a Thermoluminescence Research and Dating Laboratory
-
批准号:9496288
-
项目类别:Standard Grant
-
资助金额:$0.32万
-
财政年份:1994
-
负责人:Glenn Berger
-
依托单位:
海外基金