Question

which of these would be indications that a given mountain range was not formed by subduction?
check all that apply.
a. there are no volcanoes.
b. there are glacial caps.
c. it is not along an ocean coastline.
d. there are deep valleys.

Explanation:

Subduction - related mountain ranges often have volcanic activity (due to magma formation from sub - ducted plates) and are typically along ocean coastlines (as subduction occurs at ocean - continent or ocean - ocean plate boundaries). Glacial caps and deep valleys can form in various mountain - building scenarios (e.g., glacial erosion or river erosion) and are not exclusive to non - subduction mountain ranges. But the absence of volcanoes (A) and not being along an ocean coastline (C) are strong indicators against subduction - related mountain formation.

Answer:

A. There are no volcanoes, C. It is not along an ocean coastline