U.S. Government. a division of the Department of the Interior, created in 1879, that studies the nation’s water and mineral resources, makes topographic surveys, and classifies and leases public lands.
(lowercase) a systematic investigation of the geology of an area.
a government-sponsored organization working in the field of geology, such as the US Geological Survey, the Geological Survey of India, or the Institute of Geological Sciences (UK)
- Geological timescale
noun 1. any division of geological time into chronological units, whether relative (with units in the correct temporal sequence) or absolute (with numerical ages attached)
noun 1. the succession of eras, periods, and epochs as considered in historical geology. geologic time (jē’ə-lŏj’ĭk) The period of time covering the formation and development of the Earth, from about 4.6 billion years ago to today.
[jee-ol-uh-jist] /dʒiˈɒl ə dʒɪst/ noun 1. a person who specializes in geologic research and study. n. 1795, from geology + -ist.
[jee-ol-uh-jahyz] /dʒiˈɒl əˌdʒaɪz/ verb (used without object), geologized, geologizing. 1. to study . verb (used with object), geologized, geologizing. 2. to examine . /dʒɪˈɒləˌdʒaɪz/ verb 1. to study the geological features of (an area)