Compared to the mid-ocean ridge, sediment near the continents is:
thicker
older
O
the same
thinner
Respuestas
Respuesta:
The earth's crust is the outermost zone of the concentric structure of the geosphere, the solid part of the Earth.1 It is comparatively thin, with a thickness that varies from 5 km, on the ocean floor, up to 70 km in mountainous areas active on the continents.2
It has been suggested that the first crust on Earth was formed 4400-4550 million years ago. The volumes of the earth's crust have not been constant but are believed to have increased over time. It is known that 2500 million years ago there was already a formidable mass of crust; prior to this it is assumed that there was a lot of crust recycling into the mantle. The growth, that is, the increase in volume of the crust, is believed to have occurred episodically with two major events: one 2500-2700 million years ago and another 1700-1900 million years ago.
Most planets have fairly uniform crusts, the Earth, however, has two distinct types: continental crust and oceanic crust. These two types have different chemical compositions and physical properties, and they were formed by different geological processes.
Explicación:
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