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current-bedding

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  • current bedding — noun : a cross bedding produced by water currents or air currents * * * current bedding noun (geology) False bedding • • • Main Entry: ↑current …   Useful english dictionary

  • Cross-bedding — Crossbedding of sandstone near Mt. Carmel road, Zion Canyon, indicating wind action and sand dune formation prior to formation of rock (NPS photo by George A. Grant, 1929) …   Wikipedia

  • Graded bedding — In geology, a graded bed is one characterized by coarse sediments at its base, which grade upward into progressively finer ones. Graded beds generally represent depositional environments which decrease in transport energy as time passes, but also …   Wikipedia

  • Geology of the Australian Capital Territory — Australia grew around three fused pieces of very ancient continental crust (cratons). The geology of the Australian Capital Territory includes rocks dating from the Ordovician around 480 million years ago, whilst most rocks are from the Silurian …   Wikipedia

  • Marine geology of the Cape Peninsula and False Bay — Contents 1 Introduction 2 The geological structure of the region 2.1 Malmesbury group deposition 2.1.1 Appearance of the exposed Malmesbury group rocks …   Wikipedia

  • Oolite — For other uses, see Oolite (disambiguation). Modern ooids from a beach on Joulter s Cay, The Bahamas …   Wikipedia

  • Dalradian Series — ▪ geology       sequence of highly folded and metamorphosed sedimentary and volcanic rocks of late Precambrian to Early Cambrian age, about 540 million years old, that occurs in the southeastern portions of the Scottish Highlands of Great Britain …   Universalium

  • Waterberg Series — ▪ geology also called  Waterberg System,         major division of rocks in southern Africa. The age of the Waterberg is in doubt; it is possible that the Waterberg is late Precambrian or Early Paleozoic (older or younger than 540 million years,… …   Universalium

  • sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium

  • Sedimentary rock — Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Sedimentary rock are types of rock that are formed by the deposition of material at the Earth s surface and within… …   Wikipedia

  • environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …   Universalium

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