clay nodules

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• Clay cutan — Clay Cutans are a geologic fabric that develop around ancient cavities (such as peds) within paleosols. Contents 1 Formation 2 Recognition 3 Practical Significance 4 References …   Wikipedia

• Gault Clay — The Gault Clay is a formation of stiff blue clay deposited in a calm, fairly deep water marine environment during the Lower Cretaceous Period (Upper and Middle Albian). It is well exposed in the coastal cliffs at Copt Point in Folkestone, Kent,… …   Wikipedia

• red clay — noun clay whose redness results from iron oxide (Freq. 1) • Hypernyms: ↑clay, ↑mineral * * * noun 1. : clay that usually owes its reddish color to oxide of iron 2. : a slowly accumulating abysmal deposit covering some 55,000,000 square miles of… …   Useful english dictionary

• cement — cementable, adj. cementer, n. cementless, adj. /si ment /, n. 1. any of various calcined mixtures of clay and limestone, usually mixed with water and sand, gravel, etc., to form concrete, that are used as a building material. 2. any of various… …   Universalium

• Mycenaean Greece — History of Greece This article is part of a series …   Wikipedia

• nodule — /noj oohl/, n. 1. a small node, knot, or knob. 2. a small, rounded mass or lump. 3. Bot. a tubercle. [1590 1600; < L nodulus a little knot, equiv. to nod(us) NODE + ulus ULE] * * * In geology, a rounded mineral concretion that is distinct from,… …   Universalium

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• 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

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• Concretion — For other uses, see enterolith and nodule (geology). Septaria redirects here. For the genus of gastropods, see Septaria (gastropod). Concretions on Bowling Ball Beach (Mendocino County, California) weather out of steeply tilted Cenozoic mudstone… …   Wikipedia

• Cement — In the most general sense of the word, a cement is a binder, a substance which sets and hardens independently, and can bind other materials together. The name cement goes back to the Romans who used the term opus caementicium to describe masonry… …   Wikipedia