The acoustic emissions signature of a pressure-induced polytypic transformation in chlorite

被引：3
|
作者：
Dobson, David P.
De Ronde, Almar A.
Welch, Mark D.
Meredith, Philip G.
机构：
[1] UCL, Dept Earth Sci, London WC1E 6BT, England
[2] Nat Hist Museum, Dept Mineral, London SW7 5BD, England
来源：
AMERICAN MINERALOGIST | 2007年 / 92卷 / 2-3期
基金：
英国自然环境研究理事会;
关键词：
high-pressure studies; mechanical properties; new technique; chlorite;
D O I：
10.2138/am.2007.2389
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：
We present results of an acoustic emissions (AE) study of single crystals of chromian-clinochlore during compression to 10 GPa at room temperature. Distinct AE are detected associated with the type Ia -> Ib transition at 6 GPa. Analysis of AE source locations and first motions at transducers are consistent with a rapid collapse of the c-axis of the sample and AE originating within the sample and not the surrounding pressure medium. This is the first time that AE have been detected directly from a phase transformation in the multi-anvil press and opens new possibilities for kinetic studies and studies of deep-seismogenesis.
引用
收藏
页码：437 / 440
页数：4
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