Amorphous material in SAFOD core samples (San Andreas Fault): Evidence for crush‐origin pseudotachylytes?
Amorphous material in SAFOD core samples (San Andreas Fault): Evidence for crush‐origin pseudotachylytes?
复制标题
SAFOD 岩心样本中的非晶态材料(圣安德烈亚斯断层):压碎起源的假速水剂的证据?
DOI:
10.1029/2009gl040993
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发表时间:
2010
影响因子:
5.2
通讯作者:
Dresen
中科院分区:
文献类型:
--
作者:
Janssen;Rybacki;Naumann;Kemnitz;Dresen
Several types of amorphous material in ultracataclastic core samples recovered from 3194 m and 3294 m depth of the main bore hole of the San Andreas Fault Observatory at Depth are identified and described with transmission electron microscopy and scanning electron microscopy. We observed (1) amorphous material on a slickenside surface, (2) glassy bands contained in an ultracataclastic matrix and (3) amorphous rims surrounding quartz or feldspar clasts. Chemical analyses of the amorphous material reveal that silica content is slightly enriched or similar as in the adjacent matrix. We suggest that all amorphous material was formed by comminution of clasts (crush‐origin pseudotachylytes) rather than by melting (melt‐origin pseudotachylytes). The observed amorphous phases may act as lubricating layers that reduce friction in the San Andreas Fault.
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影响因子:
3.1
作者:
K. Ujiie;H. Yamaguchi;A. Sakaguchi;S. Toh
通讯作者:
K. Ujiie;H. Yamaguchi;A. Sakaguchi;S. Toh
影响因子:
2.5
作者:
K. Bradbury;D. C. Barton;J. Solum;S. D. Draper;James P. Evans
通讯作者:
James P. Evans
影响因子:
1.2
作者:
S. Hickman;M. Zoback;W. Ellsworth;N. Boness;P. Malin;S. Roecker;C. Thurber
通讯作者:
C. Thurber
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
A. Schleicher;L. Warr;B. A. Pluijm
通讯作者:
B. A. Pluijm
DOI:
--
发表时间:
--
期刊:
Quarterly Journal of the Geological Society of London
影响因子:
--
作者:
S. J. Shand
通讯作者:
S. J. Shand