GEOLOGY

Detailed explanation-1: -At convergent boundaries, tectonic plates collide with each other. The events that occur at these boundaries are linked to the types of plates-oceanic or continental-that are interacting.

Detailed explanation-2: -Encyclopedic Entry Vocabulary. A rift valley is a lowland region that forms where Earth’s tectonic plates move apart, or rift. Rift valleys are found both on land and at the bottom of the ocean, where they are created by the process of seafloor spreading.

Detailed explanation-3: -Where tectonic plates move away from one another the lithosphere thins. The underlying asthenosphere rises and expands like a hot-air balloon, elevating a broad region. If the plate is capped by thick continental crust, the resulting continental rift zone rises high above sea level.

Detailed explanation-4: -The rift zone is defined by an alignment of volcanic flows, dikes, normal faults, and gold-silver deposits between 18.6 and 13.6 million years old that cuts across the grain of present-day ranges without obvious topographic expression.