| 根据汪清橄榄岩包体推导上地幔流变学状态初步研究 |
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| 引用本文： | 何永年.根据汪清橄榄岩包体推导上地幔流变学状态初步研究[J].地质科学,1984,0(3):305-310. |
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| 作者姓名： | 何永年 |
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| 作者单位： | 国家地震局地质研究所 |
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| 摘 要： | 运用幔源橄榄岩包体的辉石地质温度计、地质压力计、橄榄石变形显微构造地质应力计以及橄榄石的高温流动律实验资料,计算上地幔的流变学参数是近年来探索上地幔流变学状态的一条新的途径,也是在地球物理手段之外研究上地幔状态的一个值得注意的进展1-4]。
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| 关 键 词： | , |
| 收稿时间： | 1983-04-07 |
| 修稿时间： | 1983-04-07; |
PRELIMINARY STUDY ON THE RHEOLOGY OF THE UPPER MANTLE: INFERENCES FROM WANGQING PERIDOTITE XENOLITHS |
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| He Yongnian.PRELIMINARY STUDY ON THE RHEOLOGY OF THE UPPER MANTLE: INFERENCES FROM WANGQING PERIDOTITE XENOLITHS[J].Chinese Journal of Geology,1984,0(3):305-310. |
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| Authors: | He Yongnian |
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| Institution: | Institute of Geology, State Seismological Bureau, Beijing |
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| Abstract: | Some Theological parameters of the. upper mantle beneath Wangqing, Jilin province, China were inferred from Wangqing peridotite xenoliths by applying pyroxene ther-mobarometry, dislocation wall spacing paleopiezometry and -olivine high temperature creep-flow law data. The flow rates ε of the upper mantle show a general increase with depth, whereas the equivalent viscosities η show a general decrease with depth.The data of the flow rates and equivalent viscosities of the upper mantle were plotted on the flow rate ε/depth and viscosity η/depth diagrams compiled by Mercier (1980), and found that all data fell in the field of the continent extension zones and rifts. It is obvious that the upper mantle beneath Wangqing has been characteristic of oceanic mantle, and the Wangqing region has been characteristic of continent extension zones and rifts since Cenozoic era. |
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| Keywords: | , |
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