convergent plate boundary

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con·ver·gent plate boundary

A tectonic boundary where two plates are moving toward each other. If the two plates are of equal density, they usually push up against each other to form a mountain chain. If they are of unequal density, one plate usually sinks (subducts) beneath the other. Also called collision zone. See more at tectonic boundary. Compare divergent plate boundary.
References in periodicals archive ?
Locating at the boundary between the Philippine Sea Plate to the East and the Eurasian Plate to the West, the island of Taiwan was formed at a complex convergent boundary between the two plates, where Shake employs unique Taiwanese topography as a metaphor to represent the island's geopolitical history and present condition, using a mesmerizing depiction of tectonic plates, as well as archives, poems, and military songs sung in schools.
A smoothly convergent boundary was also observed; geometrical obstacles due to contraction caused accumulation of melt near contractions, leaving the boundary of the residual wall resembling the streamlines.