According to the U.S. Geological Survey website, tectonic plates are massive, irregular-shaped slabs of solid rock, composed of oceanic and continental lithosphere. The continental...
a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past adjacent plates.
geology : a scientific theory that the Earth's surface is made of very large sections
that move very slowly; also : the movements of the large sections that form the ...
: The surface of the earth is composed of many large plates
which slowly move around the planet, meeting and diverging, creating a variety of earthquakes, volcanoes, and mountains at their margins. More »
a theory of global tectonics in which the lithosphere is divided into a number of
crustal plates, each of which moves on the plastic asthenosphere more or less ...
(used with a sing. verb) A theory that explains the global distribution of geological
phenomena such as seismicity, volcanism, continental drift, and mountain ...
Plate tectonics describes the internal workings of our planet. Using it allows
geologists to explain a wide range of geologic features and...
Dec 4, 2014 ... Plate tectonics is the theory that Earth's outer shell is divided into several ... "We
could guess that means plate tectonics was operating, but it ...
A Aa - Aa (pronounced "ah-ah" - a Hawaiian term), is lava that has a rough,
jagged, spiny, and generally clinkery surface. In thick aa flows, the rubbly surface