Ryukyu Arc: Difference between revisions

Revision as of 04:15, 30 January 2023

Revision as of 19:51, 19 March 2023

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== Tectonics ==

[[File:Evolution of the Ryukyu Arc.png|thumb|upright=1.8|right|Evolution of the Ryukyu Arc. Modified from Ujiie (1994).<ref name=":21" />]]

Along the Ryukyu Trench, the Philippine Sea Plate is subducting northwestward under the Eurasian Plate at an estimated velocity of 5–7&nbsp;cm/year.<ref name=":7" /> The subduction angles become increasingly oblique to the arc toward south.<ref name=":7">{{cite journal |last1=Seno |first1=T. |last2=Stein |first2=S. |last3=Gripp |first3=A. E. |title=A model for the motion of the Philippine Sea Plate consistent with NUVEL-1 and geological data |journal=Journal of Geophysical Research: Solid Earth |date=1993 |volume=98 |issue=B10 |pages=17941–17948 |doi=10.1029/93JB00782}}</ref> Global Positioning System data show that southern Kyushu and the Ryukyu Arc migrate southeastward (toward the Ryukyu Trench) relative to Eurasia, as compared to the westward-northwestward migration of other arcs of Japan.<ref name=":8">{{cite journal |last1=Sagiya |first1=T. |last2=Miyazaki |first2=S. |last3=Tada |first3=T. |title=Continuous GPS Array and Present-day Crustal Deformation of Japan: |journal=Pure and Applied Geophysics |date=2000 |volume=157 |issue=11 |pages=2303–2322 |doi=10.1007/PL00022507}}</ref>

=== Permian-Paleogene ===