Option A, at mid-ocean ridges, is the correct answer.
The topmost layer of the nautical share of a tectonic plate is known as the Oceanic crust. The Ocean Ridge is created as an effect of raising up of magma from the asthenosphere. Mid-ocean ridges are a large, seismically activated submarine elevation system located in the center of the basin of an ocean and considering the situation of the up-welling of magma connected with seafloor expanding. Thus they are as thick as 6 Km at the mid-ocean ridges.
The oceanic crust is thickest at the mid-ocean ridges.
Further explanation:
Oceanic crust is a thin crust that separates the ocean from the mantle, which is present beneath them. The tectonic forces create and destroy the earth's crust. This cycle is essential for all life processes. It helps in forming the earth's crust we walk on and the crust present in the ocean.
Oceanic crust is also known as seafloor. It is denser, thinner, and simpler in structure than the earth's crust. Their fragments become stranded high and dry on top of the continent because of uplift. It is made up of igneous rock basalt. It is formed from the larva that tends to flow smoothly. The basic component of the basalt is magnesium silicate; that is why; it is also known as mafic.
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Answer Details:
Grade: High school
Subject: Biology
Chapter: Earth.
Keywords:
Oceanic, basalt, mantle, beneath, tectonic, earth, seafloor, denser, fragments, stranded, continent, larva, magnesium silicate, mafic.
