Geologic time scale — This clock representation shows some of the major units of geological time and definitive events of Earth history. The Hadean eon represents the time before fossil record of life on Earth; its upper boundary is now regarded as 4.0 Ga.[1] Other… … Wikipedia
Geologic temperature record — The Geologic temperature record are changes in Earth s environment as determined from geologic evidence on multi million to billion (109) year time scales.Evidence for past temperaturesOur evidence for past temperatures comes mainly from isotopic … Wikipedia
natural process — noun a process existing in or produced by nature (rather than by the intent of human beings) the action of natural forces volcanic activity • Syn: ↑natural action, ↑action, ↑activity • Derivationally related forms: ↑active … Useful english dictionary
geological process — noun (geology) a natural process whereby geological features are modified • Syn: ↑geologic process • Topics: ↑geology • Hypernyms: ↑natural process, ↑natural action, ↑action … Useful english dictionary
Digital geologic mapping — is the process by which geologic features are observed, analyzed, and recorded in the field and displayed in real time on a computer or personal digital assistant (PDA). The primary function of this emerging technology is to produce spatially… … Wikipedia
Earth, geologic history of — Introduction evolution of the continents, oceans, atmosphere, and biosphere. The layers of rock at the Earth s surface contain evidence of the evolutionary processes undergone by these components of the terrestrial environment during the… … Universalium
Lunar geologic timescale — The lunar geologic timescale (or selenologic timescale) divides the history of Earth s moon into five generally recognized geologic periods: the Copernican, Eratosthenian, Imbrian (upper and lower), Nectarian, and Pre Nectarian. The boundaries of … Wikipedia
Chemical process modeling — Part of Chemical engineering History Concepts Unit operations Unit processes Chemical engineer Chemical process Process integration Unit operation … Wikipedia
Bridge of the Gods (geologic event) — The original Bridge of the Gods was created during the eighteenth century by the Bonneville Slide, a major landslide which dammed the Columbia River, near present day Cascade Locks, Oregon in the Pacific Northwest of the United States. The river… … Wikipedia
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium