geological period

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Noun

geological period - a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods"

period

geologic time, geological time - the time of the physical formation and development of the earth (especially prior to human history)

geological era, era - a major division of geological time; an era is usually divided into two or more periods

epoch - a unit of geological time that is a subdivision of a period and is itself divided into ages

glacial epoch, glacial period, ice age - any period of time during which glaciers covered a large part of the earth's surface; "the most recent ice age was during the Pleistocene"

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-cene epoch ERA geologic time geological era geological time geology Glacial epoch glacial period ice age neo- period			I have said that Walden has no visible inlet nor outlet, but it is on the one hand distantly and indirectly related to Flint's Pond, which is more elevated, by a chain of small ponds coming from that quarter, and on the other directly and manifestly to Concord River, which is lower, by a similar chain of ponds through which in some other geological period it may have flowed, and by a little digging, which God forbid, it can be made to flow thither again. Walden & on the Duty of Civil Disobedience by Thoreau, Henry David View in context			Geographical distribution geographical mile geographical point geographical region Geographical variation Geographical variety geographical zone geographically geographics geography geoid geol. geolatry geolinguistics Geologer Geologic geologic process geologic time geological geological cycle geological dating geological era geological fault geological formation geological horizon geological period geological phenomenon geological process Geological Survey geological time geological timescale geologically geologist geologize geology geom. geomagnetic geomagnetic equator geomagnetic pole geomagnetic reversal geomagnetic storm geomagnetism geomalism Geomancer geomancy Geomantic geomechanics geometer Geometral geometric geometric distribution			Geological Education Geological Electronic Information eXchange System Geological engineering Geological engineering Geological epoch geological era geological era geological fault geological feature, mining site, or oilfield Geological Finite Element Synthesis Tool Geological fold Geological fold geological formation geological horizon Geological Information Visualization Geological Institute GIN Geological Investigation Permit Geological Journal of China Universities Geological Journals Geological layer Geological layer Geological layer Geological layer Geological Long Range Inclined ASDIC Geological map Geological mapping Geological Maps Geological Modeling Society of Houston Geological oceanography Geological Ordinance geological period geological phenomenon Geological Pick-Hammer geological process Geological Processes and Mineral Resources Geological Prospecting Geological Remote Sensing Group Geological Research and Development Centre Geological Sciences Geological Sciences Geological Sciences Geological Sciences Student Research Symposium Geological Sciences, Institute of Geological Series Geological Society of Africa Geological Society of Alexandria University Geological Society of America Geological Society of America Bulletin Geological Society of America Special Papers Geological Society of America, Inc. Geological Society of Australia Geological Society of Glasgow Geological Society of Iran Geological Society of Malaysia Geological Society of Nevada Geological Society of New Hampshire Geological Society of New Zealand

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