Collisional mountain belts have a long and complex history. For example, the Him
ID: 298739 • Letter: C
Question
Collisional mountain belts have a long and complex history. For example, the Himalayas have been forming over a period of 40 million years. Put the following processes that shape mountain belts in a reasonable geologic order starting with 1 as the earliest in the progression. ________ gravitational collapse ________ accretion of exotic terranes such as island arcs and oceanic plateaus _________ ocean basin closure and crustal thickening _________ erosional peneplanation and angular unconformity production. Which large scale process that is found in response to India colliding with Asia is not mentioned in the above? ___________________________ Which of the above orogenic processes is due to the strength of the rocks supporting the mountainous relief? ___________________________ (4pts.)
Explanation / Answer
Collisional mountain belts have a long and complex history. For example, the Himalayas have been forming over a period of 40 million years. Put the following processes that shape mountain belts in a reasonable geologic order starting with 1 as the earliest in the progression. Oceanic plates subduction caused due to gravitational collapse formed deep oceans on subducting plates, upliftment of continental plate caused orogency and accretion of exotic terrains such as island arcs and oceanic plates formed deep ocean basin closure and crustal thickening happend due to orogeny and volcanism. The organic mountain ranges under gone erosional actions and formed peneplanation landforms. The sedimentary deposits exhibiting angular unconformity due to production of gaps in deposition and alignment of sediments. Asian plate collision with Eurasia plate created Himalayan mountain range which is a large scale process tht is found in response to India colliding with Asia is not mentioned in the above? Collision of India and China plates annd subduction process still in process which resulting in Himalaya orogenic process. The Himalayan mountain orogeny formed high relief mountains due to the strength of the rocks supporting the mountainous relief. The orogeny process is still continuing can be evidenced by increasing height of Himalayas and frequent high magniture earthquaks in this region.