#头号周刊 #
Submarine mountains
Refers to the mid-ocean ridges and ridges that stretch across the seabed. Submarine mountains
Also known as "ridge" or "ridge". The bottom of the deep sea is long and narrow
The length of the highlands can reach tens of thousands of kilometers. Generally under the sea, one
The peaks of Bepjeong emerge from the water to become islands.
Most of the submarine mountains are made of volcanic rocks such as peridot and basalt
Made of stone. They are not disorganized, but present
Strips are arranged in a strip. Submarine mountains are mostly developed in submarine plateaus
and raised on the high ground. These plateaus, highlands are magma jets
Formed at the time of occurrence.
There are a large population of organisms around the submarine mountains, from sharks,
Unknown octopus to coral. It's reached by the plankton around it
In staggering numbers, plankton again attract a lot of water vividly
things, so that marine mammals, sharks, tuna, etc. have
The food is plentiful and even attracts a large number of seabirds.
Deep sea plains
Refers to a landform in the deep sea that resembles a land plain. Deep sea flat
It is generally located at a depth of 3,000 to 6,000 meters on the seabed. deep
The sea plain is located between the continental shelf and the mid-ocean ridge and extends a number
100 km wide.
Deep-sea plains are found in all oceans of the world. Ohnishi
Oceans are the most distributed oceans in deep-sea plains. Because of the Atlantic
The land-based sediments are particularly abundant, but also at the edge of the Atlantic Ocean
There is no trench barrier, provided for the formation of deep-sea plains
The most favorable conditions. Conversely, the Pacific Ocean is surrounded by a lot
There are many trenches, so there are very few deep-sea plains in the Pacific Ocean
See. It is found only in the northeastern Pacific Ocean.
The undulations of deep-sea plains are usually small, varying by 10 to 10 kilometers per kilometer
100 cm. Deep-sea plains cover approximately the area of the ocean
40%, the most distributed in the Atlantic. Formation of deep-sea plains
Mainly due to the silicon-magnesium belt deep in the formation being upwelled by the mantle
Bring it to the ground and form a new oceanic crust on the mid-ocean ridge.
The continental edge is the site where various geological processes are most active, also
It is an important link linking continental geology and oceanic geology. big
The continental margins, especially the passive continental margins, are the most important in the world
Sediment concentration area, sediment volume accounted for one of the total marine sediments
More than half, rich in oil and gas and other mineral resources. #知识 #
