The crust of the Earth is composed of a great variety of igneous, metamorphic,
and sedimentary rocks. The crust is underlain ...
The Earth's Crust The first layer consists of about 10 miles (16km) of rock and
loose materials scientists call the crust. Underneath the continents, the crust is ...
The Earth's Crust is like the skin of an apple. It is very thin in comparison to the
other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the
Apr 7, 2005 ... Scientist said this week they had drilled into the lower section of Earth's crust for
the first time and were poised to break through to the mantle in ...
The Earth's crust is the thin, rocky layer that makes up our planet's shell. It is
exceptionally important, and not just because we live on it.
Sep 16, 2016 ... You might not realize it, but you're standing on a thin shell of solid rock encasing
a vast quantity of molten rock. This is the Earth's crust, and it's ...
The average thickness of the terrestrial crust for both East and West Antarctica
approximates that of other continents. Although it has been postulated that West ...
Noun, 1. Earth's crust - the outer layer of the Earth. crust · layer - a relatively thin
sheetlike expanse or region lying over or under another. asthenosphere - the ...
Apr 6, 2016 ... This contour map of the thickness of the Earth's crust was developed from the
CRUST 5.1 model. The contour interval is 10 km; we also include ...
Given the abundance of oxygen and silicon in the crust, it should not be
surprising that the most abundant minerals in the earth's crust are the silicates.