Deep sea hill
A deep sea mound is a small mound that rises above the floor of a deep sea level . The hills cover 30% of the ocean floor and are the most common geomorphic structures on earth . The deep-sea hills have relatively sharply defined edges and reach heights of no more than a few hundred meters. Their width can range from a few hundred meters to several kilometers. A region of the deep sea level that is covered by such hill structures is known as the deep sea hill province . Deep sea hills can also appear in small groups or in isolation.
The most common deep-sea hills are found on the bottom of the Pacific . These are usually 50 to 300 meters high, two to five kilometers wide and 10 to 20 kilometers long. They can be formed as clumps or trenches along the flanks of the East Pacific Ridge , which then expand over time. Deep-sea hills can also be areas with thicker oceanic crust, which were formed on the mid-ocean ridge during times of increased magma production .
Individual evidence
- ↑ a b c Michael J. Kennish: Practical handbook of marine science . 3. Edition. CRC Press, 2001, ISBN 0-8493-2391-6 , pp. 282 .
- ↑ Bruce C. Heezen, AS Laughton: Abyssal Plains . In: MN Hill (Ed.): The Earth Beneath the Sea History (= The Sea: Ideas and Observations on Progress in the Study of the Seas . No. 3 ). Harvard University Press, 1963, ISBN 0-674-01730-7 , pp. 312 .
- ^ Y. Dilek: Structure and tectonics of intermediate-spread oceanic crust drilled at DSDP / ODP Holes 504B and 896A, Costa Rica Rift . In: Adrian Cramp (Ed.): Geological evolution of ocean basins: results from the Ocean Drilling Program (= Geological Society special publication . No. 131 ). Geological Society, 1998, ISBN 1-86239-003-7 , pp. 194 .