A Matter of Scale
A Matter of Scale
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DOI：
10.1029/2019cn000124
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发表时间：
2020-01
期刊：
影响因子：
--
通讯作者：
Wang-Ping Chen
中科院分区：
文献类型：
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作者：
Wang-Ping Chen
板块构造学是二十世纪最伟大的科学发现之一，在海洋地区特别有效，但在解释大陆广泛的、扩散的变形方面却有相当大的困难。关于地壳的连续变形还是沿着沿着的滑动更接近大陆构造，一直有一个持久的讨论。解决这个问题的一个关键困难是，流动和滑移之间的区别是规模依赖。此外，即使在几十毫米或更小的尺度下，两种变形机制也可以共存。由于可靠的地球物理数据的限制，时间上的尺度比大约100年长得多，使空间尺度的问题进一步复杂化。然而，大陆构造中某些问题的解决方案并不依赖于端元模型，而对大陆地壳下岩石圈地幔作用的理解的进展表明，需要将我们的注意力扩展到地壳以下。
Plate tectonics, one of the greatest scientific discoveries of the twentieth century, works particularly well in oceanic regions but has considerable difficulty to account for widespread, diffuse deformation of the continents. There has been an enduring discourse on whether continuous deformation of the crust or slip along discrete faults is a better approximation of continental tectonics. A key difficulty in resolving this issue is that the distinction between flow and slip is scale dependent. Moreover, even at scales of tens of millimeters or less, both mechanisms of deformation can coexist. Over times much longer than about 100 years, the limit of reliable geophysical data, the scale in time further complicates the problem of spatial scales. However, solutions to some problems in continental tectonics do not rely on end‐member models, and advances in understanding the role of the lithospheric mantle beneath the continental crust point the need to extend our focus below the crust.