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An experimental study on creep of partially molten granulite under high temperature and wet conditions

机译：高温高湿条件下部分熔融颗粒的蠕变实验研究

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摘要

Samples of natural granulite were deformed in a gas medium apparatus to evaluate the flow strength of the lower crust. The sample consists of similar to 52 vol% plagioclase, similar to 40 vol% pyroxene, similar to 3 vol% quartz, similar to 5 vol% magnetite and ilmenite. Water content was similar to 0.17 +/- 0.05 wt% in the deformed samples. 40 creep tests were performed on 13 samples at 300 MPa confining pressure, temperatures of 900-1200 degrees C, and strain rates between 3.13 x 10(-6) and 5 x 10(-5)/s, resulting in axial stresses of 12-764 MPa and the total strain up to 7.8-20.5%.
机译：天然花岗石样品在气体介质设备中变形，以评估下地壳的流动强度。样品由类似于52 vol％的斜长石，类似于40 vol％的辉石，类似于3 vol％的石英，类似于5 vol％的磁铁矿和钛铁矿组成。变形样品中的水含量类似于0.17 +/- 0.05wt％。在300 MPa的围压，900-1200摄氏度的温度以及3.13 x 10（-6）和5 x 10（-5）/ s的应变速率下，对13个样品进行了40次蠕变测试，导致轴向应力为12 -764 MPa，总应变高达7.8-20.5％。

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