Geology

Geology

The science that comprises the study of the solid Earth and the processes by which it is shaped and changed.

Contributors in Geology

Geology

A process to recover dissolved gold onto activated carbon, by introducing activated carbon into the system after the gold has been dissolved by the cyanide solution and subsequently separating the ...

Bomb

Earth science; Geology

Fragments of molten or semi-molten rock, several inches to several feet in diameter, which are blown out during an explosive volcanic eruption. Because of their semi-plastic condition, bombs are ...

Chemical weathering

Earth science; Geology

The process by which chemical reactions alter the chemical composition of rocks and minerals that are unstable at the Earth's surface and convert them into more stable substances; weathering that ...

Alcohol thermometer

Earth science; Geology

A liquid-in-glass thermometer containing an alcohol liquid, such as ethanol. Because alcohol has a low freezing point, alcohol thermometers are as minimum thermometers at stations where temperatures ...

Cretaceous

Earth science; Geology

The final period of the Mesozoic era, spanning the time between 145 and 65 million years ago. The name is derived from the Latin word for chalk ("creta") and was first applied to extensive deposits ...

Beaufort scale

Earth science; Geology

The relationship between sea state and wind speed. The Beaufort Scale can be used to estimate wind speed at sea, but is valid only for waves generated within the local weather system, and assumes ...

Cup anemometer

Earth science; Geology

A rotation-type anemometer consists of an array of three (or four) hemispherical cups mounted symmetrically about a vertical rotation axis. The rate of rotation of the cup array is a measure of the ...