Rigid and non-rigid micro-plates: Philippines and Myanmar-Andaman case studies | Zendy

Claude Rangin | Zendy

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Rigid and non-rigid micro-plates: Philippines and Myanmar-Andaman case studies

Author(s) -

Claude Rangin

Publication year - 2015

Publication title -

comptes rendus géoscience

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.58

H-Index - 78

eISSN - 1778-7025

pISSN - 1631-0713

DOI - 10.1016/j.crte.2015.10.008

Subject(s) - geology , plate tectonics , archipelago , tectonics , subduction , convergent boundary , oblique case , convergence (economics) , seismology , peninsula , kinematics , geometry , geodesy , geography , oceanic crust , oceanography , physics , mathematics , linguistics , philosophy , archaeology , classical mechanics , economic growth , economics

International audienceGenerally, tectonic plates are considered as rigid. Oblique plate convergence favors the development of micro-plates along the converging boundaries. The north–south-trending Philippines archipelago (here named Philippine Mobile Belt, PMB), a few hundreds kilometers wide, is one of such complex tectonic zones. We show here that it is composed of rigid rotating crustal blocks (here called platelets). In Myanmar, the northernmost tip of the Sumatra-Andaman subduction system is another complex zone made of various crustal blocks in-between convergent plates. Yet, contrary to PMB, it sustains internal deformation with platelet buckling, altogether indicative of a non-rigid behavior. Therefore, the two case studies, Philippine Mobile Belt and Myanmar-Andaman micro-plate (MAS), illustrate the complexity of micro-plate tectonics and kinematics at convergent plate boundaries

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