Lithosphere oceanic crust thickness. The layer is divided into chunks called tectonic plates. It extends to a depth of about 60 miles (100 km). It is divided into tectonic plates. It is composed of two layers: the crust and the uppermost mantle. A Guide to Earth’s Lithosphere The lithosphere is the rigid outermost shell of a planet or other rocky body. ”. Nov 29, 2023 · The lithosphere is the Earth's outermost, rigid solid layer, with the crust and brittle upper mantle. It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth’s structure. The name “lithosphere” comes from the Greek words meaning “stone layer. Mar 29, 2022 · The lithosphere is Earth's outermost layer, composed of the crust and the upper part of the mantle. Earth's lithosphere, which constitutes the hard and rigid outer vertical layer of the Earth, includes the crust and the lithospheric mantle (or mantle lithosphere), the uppermost part of the mantle that is not convecting. The lithosphere is broken up into about a dozen separate, rigid blocks, or plates. Nov 29, 2023 · The lithosphere is the solid, outer part of Earth. Aug 1, 2025 · Lithosphere, rigid, rocky outer layer of Earth, consisting of the crust and the solid outermost layer of the upper mantle. uhrctbew zerr cmxs qrtzii qezudo qnv acpu zuwq eyytezf vcj