Footwall Refrigeration Along a Detachment Fault: Implications for the Thermal Evolution Of Core Complexes

Jean Morrison; J. Lawford Anderson

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Footwall Refrigeration Along a Detachment Fault: Implications for the Thermal Evolution Of Core Complexes

机译：沿拆离断层的底盘制冷：对核心复合体热演化的影响

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Oxygen isotope compositions of epidote and quartz form chloritic breccias that underlie the detachment fault in the metamorphic core complex of the Whipple Mountains yielded quartz-epidote fractionations that range form 4.1 to 6.4 per mil and increase system actically toward the fault. These fractionations give mean temperatures that decrease from ～432 deg. C at 50 meters below the fault to ～350 deg. C at 12 meters below the fault. This extreme thermal gradient of 82 deg. C over 38 meters (2160 deg. C per kilometer) is best explained by advective heat extraction by means of circulating surface-derived fluids.

机译：在Whipple山变质岩心复合体中的脱离断层基础上的附子和石英形式的氯酸角砾岩的氧同位素组成产生了石英-Epidote的馏分，范围从4.1到6.4 / mil，并朝断层的方向增加。这些分级给出的平均温度从432度降低。断层下方50米处的C到〜350度。 C在断层以下12米处。 82度的极端温度梯度。用循环表面衍生的流体进行对流热萃取可以最好地解释38米以上的碳（每公里2160摄氏度）。

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《Science》 |1998年第5347期|p.63-66|共4页
作者
Jean Morrison; J. Lawford Anderson;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种 eng
中图分类自然科学总论;
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Footwall Refrigeration Along a Detachment Fault: Implications for the Thermal Evolution Of Core Complexes

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