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| plate reconstruction ： ウィキペディア英語版 |
plate reconstruction
Plate reconstruction is the process of reconstructing the positions of tectonic plates relative to each other (relative motion) or to other reference frames, such as the earth's magnetic field or groups of hotspots, in the geological past. This helps determine the shape and make-up of ancient supercontinents and provides a basis for paleogeographic reconstructions.
==Defining plate boundaries==
An important part of reconstructing past plate configurations is to define the edges of areas of the lithosphere that have acted independently at some time in the past.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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