Chlorine-36 evidence for the Mono Lake event in the Summit GRIP ice core

被引:97
作者
Wagner, G
Beer, J
Laj, C
Kissel, C
Masarik, J
Muscheler, R
Synal, HA
机构
[1] EAWAG, CH-8600 Dubendorf, Switzerland
[2] CEA, CNRS, Lab Sci Climat & Environm, Unite Mixte, F-91198 Gif Sur Yvette, France
[3] Comenius Univ, Fac Math & Phys, Dept Nucl Phys, SK-84215 Bratislava, Slovakia
[4] ETH Honggerberg, Paul Scherrer Inst, CH-8093 Zurich, Switzerland
关键词
Cl-36; magnetic field; paleomagnetism; cosmogenic elements; radioactive elements;
D O I
10.1016/S0012-821X(00)00196-5
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
A distinct peak has been discovered in the Cl-36 data from the GRIP ice core between the Dansgaard Oeschger (D-O) events 6 and 7 at approximately 32 kyr BP. This peak can be attributed to a minimum of the geomagnetic dipole field associated with the Mono Lake event, Since the Cl-36 peak reflects a higher production rate of all cosmogenic radionuclides, it has an impact on the C-14 dating of the last ice age. Furthermore, it provides an additional time marker similar to a peak found earlier corresponding to the Laschamp event at approximately 39 kyr BP. (C) 2000 Elsevier Science B,V, All rights reserved.
引用
收藏
页码:1 / 6
页数:6
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