by Delmer Muller
Published 3 years ago
Updated 2 years ago
The depth in the crust where the crust changes from being brittle (tending to break) above, to being ductile (tending to bend) below. Most earthquakes occur in the brittle portion of the crust above the brittle-ductile
brittle-ductile
The brittle-ductile transition zone (hereafter the "transition zone") is the zone of the Earth's crust that marks the transition from the upper, more brittle crust to the lower, more ductile crust.
https://en.wikipedia.org › wiki › Brittle–ductile_transition_zone
We didn't know the Earth had a crust until the early 1900s. Up until then, all we knew was that our planet wobbles in relation to the sky as if it had a large, dense core -- at least, astronomical observations told us so. Then along came seismology, which brought us a new type of evidence from below: seismic velocity .
Crusts and Plates
The crust and tectonic plates are not the same. Plates are thicker than the crust and consist of the crust plus the shallow mantle just beneath it. This stiff and brittle two-layered combination is called the lithosphere ("stony layer" in scientific Latin).
Continental Crust
Continental crust is thick and old -- on average about 50 km thick and about 2 billion years old -- and it covers about 40 percent of the planet. Whereas almost all of the oceanic crust is underwater, most of the continental crust is exposed to the air.
What the Crust Means
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.
12 hours ago
· The crust is brittle and cold but the outer core is fluid instate. What is the crust and brittle upper mantle called? Earth's crust and brittle upper mantle is called the lithosphere.
30 hours ago
· The rocky outer layer of Earth's surface. The two types of crust are continental and oceanic. The layer of solid, brittle rock that makes up the Earth's surface. The lithosphere is …
31 hours ago
Answer (1 of 5): The upper crust is more brittle than the lower crust simply because it is colder. The closer the rocks of the crust are to ‘space’, the colder they are (compared to the rocks of …
5.the crust of the earth is brittle and is liable to …
Url:https://brainly.ph/question/790957
1 hours ago
The crust of the earth is brittle and is liable to breaking,true or false. True because the plates are pushed or pulled, causing rock to subject stress.
36 hours ago
· The rocky outer layer of Earth's surface. The two types of crust are continental and oceanic. The layer of solid, brittle rock that makes up the Earth's surface. The lithosphere is …
