decay of rocks

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• decay — [dē kā′, dikā′] vi. [ME decaien < Anglo Fr & OFr decäir < VL * decadere: see DECADENCE] 1. to lose strength, soundness, health, beauty, prosperity, etc. gradually; waste away; deteriorate 2. to rot or decompose 3. to undergo radioactive… …   English World dictionary

• Decay chain — In nuclear science, the decay chain refers to the radioactive decay of different discrete radioactive decay products as a chained series of transformations. Most radioactive elements do not decay directly to a stable state, but rather undergo a… …   Wikipedia

• decay — decayable, adj. decayedness /di kayd nis, kay id /, adj. decayless, adj. /di kay /, v.i. 1. to become decomposed; rot: vegetation that was decaying. 2. to decline in excellence, prosperity, health, etc.; deteriorate. 3. Physics. (of a radioactive …   Universalium

• decay — de•cay [[t]dɪˈkeɪ[/t]] v. i. 1) mcr to become decomposed; rot 2) to decline in health, prosperity, etc.; deteriorate 3) phs (of an atomic nucleus) to undergo radioactive disintegration 4) mcr to cause to decompose; rot 5) mcr decomposition; rot… …   From formal English to slang

• The Rocks, New South Wales — Infobox Australian Place | type = suburb name = The Rocks city = Sydney state = nsw caption = Circular Quay West lga = City of Sydney parish = St. Philip postcode = 2000 est = pop = area = propval = stategov = Sydney [Cite web… …   Wikipedia

• Joly , John — (1857–1933) Irish geologist and physicist Joly was born the son of a clergyman from Hollywood, now in the Republic of Ireland. He entered Trinity College, Dublin, in 1876 where he studied literature and engineering. He taught in the engineering… …   Scientists

• Israel Russell — Israel Cook Russell, LL.D. (1852 1906) was an American geologist who explored Alaska in the early 20th century. He was born at Garrattsville, New York, on the 10th of December 1852. He received B.S. and C.E. degrees in 1872 from the University of …   Wikipedia

• geest — ˈgāst, ˈgēst noun ( s) Etymology: German, from Low German, high dry land near the sea, from Middle Low German gēst more at gast 1. : alluvial matter not of recent origin on the surface of land …   Useful english dictionary

• dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …   Universalium

• chemical element — Introduction also called  element,         any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.       This article considers the… …   Universalium

• geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …   Universalium