A(n)________ is a thick accumulation of sediments and small tectonic blocks formed of material scraped off subducting oceanic lithosphere at a convergent margin.
A)mass movement complex
B)continental shelf,terrain complex
C)accretionary-wedge complex
D)subterranean-accumulation complex

Question

Quizplus · Accepted Answer

An accretionary wedge complex is a thick accumulation of sediments and small tectonic blocks scraped off subducting oceanic lithosphere at a convergent margin. It forms where the sedimentary material and oceanic crust are scraped off the down-going plate at the trench and then accreted onto the overriding plate. A mass movement complex is a general term for deposits resulting from the movement of material downslope due to gravity. A continental shelf terrain complex is a term used to describe the topography of the continental shelf, including features such as ridges and valleys. A subterranean accumulation complex is not a recognized geological term.

A(n)________ Is a Thick Accumulation of Sediments and Small Tectonic