Earth's crust - Wikipedia
Earth's crust is its thick outer shell of rock, referring to less than one percent of the planet's radius and volume. It is the top component of the lithosphere, a solidified division of Earth 's layers that includes the crust and the upper part of the mantle. [1] .
The Earth's Crust: Everything You Need to Know - ThoughtCo
2019年1月25日 · The crust is a thin but important zone where dry, hot rock from the deep Earth reacts with the water and oxygen of the surface, making new kinds of minerals and rocks. It's also where plate-tectonic activity mixes and scrambles these new rocks and injects them with chemically active fluids.
Earth - Core, Crust, Mantle | Britannica
4 天之前 · Earth’s outermost, rigid, rocky layer is called the crust. It is composed of low-density, easily melted rocks; the continental crust is predominantly granitic rock (see granite), while composition of the oceanic crust corresponds mainly to that of basalt and gabbro.
Crust - Education | National Geographic Society
2024年4月25日 · Dynamic geologic forces created Earth’s crust, and the crust continues to be shaped by the planet’s movement and energy. Today, tectonic activity is responsible for the formation (and destruction) of crustal materials. Earth’s crust is divided into two types: oceanic crust and continental crust.
Layers of the Earth: Facts, Definition, Composition, & Diagram
2023年2月2日 · The most abundant elements found in the earth’s crust include oxygen, silicon, aluminum, iron, and calcium. The temperature within the earth’s crust is high enough to melt rocks and form the lower layer called the upper mantle.
Layers of the Earth - Science Notes and Projects
2023年8月1日 · The four main layers of the Earth are the crust, mantle, outer core, and inner core. The Earth, like an onion, consists of several concentric layers, each with its own unique set of properties and characteristics.
Crust (geology) - Wikipedia
In geology, the crust is the outermost solid shell of a planet, dwarf planet, or natural satellite. It is usually distinguished from the underlying mantle by its chemical makeup; however, in the case of icy satellites, it may be distinguished based on its phase (solid crust vs. liquid mantle).
Structure of the Earth - The Earth and atmosphere - BBC
The crust is the outermost layer of the Earth. It is made from enormous plates of rocks. Some of the crust is covered by water – the oceans.
3.1: Earth’s Layers- Crust, Mantle, and Core
2024年8月22日 · The Earth’s outermost layer—its crust —is rocky and rigid. There are two kinds of crust: continental crust, and ocean crust. Continental crust is thicker, and predominantly felsic in composition, meaning that it contains minerals that are richer in silica.
Plate tectonics - Earth's Layers, Crust, Mantle | Britannica
2024年10月1日 · Chemically, Earth can be divided into three layers. A relatively thin crust, which typically varies from a few kilometres to 40 km (about 25 miles) in thickness, sits on top of the mantle. (In some places, Earth’s crust may be up to 70 km [40 miles] thick.)