Archean

Archean

The earlier part of Precambrian time form about 2500mya to 570 mya.

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Industry/Domain: Earth science
Category: Geology
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archean

Geography; Physical geography

Geologic eon that occurred from 2500 to 3800 million years ago. During this time period, the first single-celled prokaryote organisms evolved and developed.

archean

Earth science; Geology

The earlier part of Precambrian time form about 2500mya to 570 mya.

archean

Science; General science

A period of geologic time from about 3.8 to 2.5 billion years ago (Ga). During the Archean Eon a large percentage of the Earth's continental crust formed, plate tectonics began, ...

archean

Oil & gas; Oilfield

An eon of geologic time extending from about 3.9 billion to 2.5 billion years ago.

Toni voda

Travel; Travel sites; Geology

Toni voda is a subterranean river, located in a karst field, just a couple of kilometers from Galichnik.

drumlin

Earth science; Geology

Streamlined hill, largely of till, with blunt end pointing into direction from which ice moved. Occur in clusters called drumlin fields.

drylands

Earth science; Geology

A general term for semiarid and desert lands.

ductile

Earth science; Geology

Structural behavior in which a material deforms permanently without fracturing.

dust bowl

Earth science; Geology

An area subject to dust storms, especially south central United States.

dust storm

Earth science; Geology

Large volume of dust-sized particles lifted high into the atmosphere.

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