drift epoch

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• Drift epoch — Drift Drift, a. That causes drifting or that is drifted; movable by wind or currents; as, drift currents; drift ice; drift mud. Kane. [1913 Webster] {Drift anchor}. See {Sea anchor}, and also {Drag sail}, under {Drag}, n. {Drift epoch} (Geol.),… …   The Collaborative International Dictionary of English

• Drift — Drift, a. That causes drifting or that is drifted; movable by wind or currents; as, drift currents; drift ice; drift mud. Kane. [1913 Webster] {Drift anchor}. See {Sea anchor}, and also {Drag sail}, under {Drag}, n. {Drift epoch} (Geol.), the… …   The Collaborative International Dictionary of English

• Drift anchor — Drift Drift, a. That causes drifting or that is drifted; movable by wind or currents; as, drift currents; drift ice; drift mud. Kane. [1913 Webster] {Drift anchor}. See {Sea anchor}, and also {Drag sail}, under {Drag}, n. {Drift epoch} (Geol.),… …   The Collaborative International Dictionary of English

• Drift net — Drift Drift, a. That causes drifting or that is drifted; movable by wind or currents; as, drift currents; drift ice; drift mud. Kane. [1913 Webster] {Drift anchor}. See {Sea anchor}, and also {Drag sail}, under {Drag}, n. {Drift epoch} (Geol.),… …   The Collaborative International Dictionary of English

• Drift sail — Drift Drift, a. That causes drifting or that is drifted; movable by wind or currents; as, drift currents; drift ice; drift mud. Kane. [1913 Webster] {Drift anchor}. See {Sea anchor}, and also {Drag sail}, under {Drag}, n. {Drift epoch} (Geol.),… …   The Collaborative International Dictionary of English

• drift|less area — «DRIHFT lihs», Geology. an area, including parts of the present states of Wisconsin, Minnesota, Iowa, and Illinois, which was presumably not covered by ice during the glacial epoch …   Useful english dictionary

• Epoch (reference date) — In the fields of chronology and periodization, an epoch means an instant in time chosen as the origin of a particular era. The epoch then serves as a reference point from which time is measured. Time measurement units are counted from the epoch… …   Wikipedia

• drift period — noun Usage: often capitalized D : glacial epoch …   Useful english dictionary

• Terrace epoch — Terrace Ter race, n. [F. terrasse (cf. Sp. terraza, It. terrazza), fr. L. terra the earth, probably for tersa, originally meaning, dry land, and akin to torrere to parch, E. torrid, and thirst. See {Thirst}, and cf. {Fumitory}, {Inter}, v.,… …   The Collaborative International Dictionary of English

• Pleistocene Epoch — Earlier and longer of the two epochs that constitute the Quaternary Period. The Pleistocene began с 1.8 million years ago and ended с 10,000 years ago. It was preceded by the Pliocene Epoch of the Tertiary Period and followed by the Holocene… …   Universalium

• Glacial epoch — Glacial Gla cial, a. [L. glacialis, from glacies ice: cf. F. glacial.] 1. Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena. Lyell. [1913 Webster] 2. (Chem.) Resembling ice;… …   The Collaborative International Dictionary of English