Exam 9: Mountains

A rock has a greater tendency to become plastic if the temperature does what? ____________

The rising of the Himalayas coincided with global warming because excessive carbon dioxide was added to the atmosphere due to weathering of bedrock.

If you visit the Himalaya Range, you are looking at the location where _________ smashed into Asia in a continent-to-continent collision.

The modern Himalayas continue to grow as a plate carrying oceanic crust subducts beneath a plate carrying continental crust.

The belt of rocks that is deformed during mountain building is called a(n) ____.

Seafloor sediment and oceanic crust pieces are scraped off a subducting plate and accumulate in the ____ complex.

Explain how a magmatic activity can add thickness to the Earth's crust.

Explain how the speed of plate movement can impact plate collisions at a subduction zone.

Explain how pressure affects the way stress impacts a rock.

A wedge-shaped block of rock that drops downward between a pair of normal faults is a(n) ____.

Prior to the formation of the Himalayas, a(n) ____ zone initially formed at the Asian margin.

If a rock folds with little or no fracturing, this indicates that the rock deformed in a(n) ____________________ manner.

If fossils of marine organisms are found in Himalayan sedimentary rock toward its summit, that is an indicator that this region was once an ocean.

If you are in the field and see a fold where the layers in the shape of a "U," what type of fold have you observed?

A backarc basin is formed during the formation of island arcs.

If you are in the field and see a fold where the layers in the shape of a rainbow, what type of fold have you observed?

A sedimentary basin between a trench and an island arc is called a ____________

In order for island arc to form, two diverging oceanic plates must be separating from one another.

A syncline _________.

In a fault, the hanging wall has moved downward relative to the footwall due to what specific type of stress? _____________