Cosmogenic 10Be and 26Al dating of erratic boulders in the southern coastal area of Lake Baikal, Siberia

被引：14

作者：

Horiuchi, K ^{[1
]}

Matsuzaki, H

Osipov, E

Khlystov, O

Fujii, S

机构：

[1] Hirosaki Univ, Fac Sci & Technol, Dept Earth & Environm Sci, Hirosaki, Aomori 0368561, Japan

[2] Univ Tokyo, Res Ctr Nucl Sci & Technol, Tokyo 1130032, Japan

[3] Russian Acad Sci, Limnol Inst, Irkutsk 664033, Russia

[4] Fujii Inst Environm Geol, Toyama 9398075, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2004年 / 223卷

关键词：

cosmogenic age; glacial landforms; Bolling/Allerod; Central Asia; Be-10; standard;

D O I：

10.1016/j.nimb.2004.04.117

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Cosmogenic Be-10 and Al-26 dating of three erratic boulders in the southern coastal area of Lake Baikal was performed using accelerator mass spectrometry (AMS) at MALT (MicroAnalysis Laboratory, Tandem accelerator) of the University of Tokyo. We examined the accuracy of our Be-10 AMS measurements and the differences in scaling factors for the Be-10 and Al-26 production rates. The measured Be-10 and Al-26 ages are 15-13 and 17-11.5 kyr, respectively. The Be-10 ages suggest that release of the erratic boulders from a melting glacier occurred during the Bolling/Allerod warm period, when the land and lacustrine environments of the Baikal region changed dramatically. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：633 / 638

页数：6