Geophysics

   

What Drives Plate Motions?

Authors: Yongfeng Yang

Plate motion was widely thought to be a manifestation of mantle dynamics. However, an in-depth investigation shows this understanding incompetent. Here we propose, the daily tides yield varying pressures between oceans, the application of these pressures to the continent's sides forms enormously unequal horizontal forces, the net effect of these forces provides lateral push to the continent and may cause it to move horizontally, further, the moving continent by basal drag entrains its lower lithosphere to move, these totally form plate motion. Quantitatively estimation shows that the tide generating force give South American, African, Indian, and Australian continents a movement of respectively 2.8, 4.2, 5.6, and 6.3 cm/yr. A torque effect may independently rotate North American and Eurasian continents, and the combination of two lateral pushes offers Pacific Plate unusual motion (nearly orthogonal to Australian plate’s motion).

Comments: 24 Pages.

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Submission history

[v1] 2017-05-18 03:55:34
[v2] 2017-05-19 03:12:42
[v3] 2017-06-20 02:07:58
[v4] 2017-11-14 15:05:52

Unique-IP document downloads: 203 times

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