2007-08-29 01:22:20 · 2 answers · asked by silver.aikha 2 in Science & Mathematics ➔ Earth Sciences & Geology
The mineralogy (chemical components) of the mantle has been proposed to be of eclogite (omphacite and pyrope garnet), peridotite (olivine and pyroxene) and dunite (olivine) composition. The "physical components" of the mantle are that of a plastic solid, which allows flow while retaining rigidity. It is believed that at the 400 km discontinuity olivine assumes the perskovite sturcture and at the 660 km discontinuity pyroxene assumes the spinel structure.
2007-08-29 06:27:16 · answer #1 · answered by Amphibolite 7 · 0⤊ 0⤋
Chemically it is basicallly Iron, molten and solid. Around the core, up to about 70 miles from crust it is molten rock. The Mantle, which floats like plates on liquid, is sectioned along fault lines.Granite, Basalt, Limestone, Clay and disentergrated rock make up most of mantle.
2007-08-29 05:16:59 · answer #2 · answered by Boliver Bumgut 4 · 0⤊ 1⤋