facies changes

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• facies changes — GLOSSARY OF VOLCANIC TERMS The textural and compositional changes that occur laterally and/or vertically within related rock bodies …   Glossary of volcanic terms

• Facies — The term Facies can also refer to distinctive facial expressions associated with conditions such as Williams syndrome. In geology, facies are a body of rock with specified characteristics. [Reading (1996)] Ideally, a facies is a distinctive rock… …   Wikipedia

• sedimentary facies — Different, but contemporaneous and juxtaposed, sedimentary rocks. Terrigenous facies are accumulations of particles eroded from older rocks and transported to the depositional site. Biogenic facies are accumulations of whole or fragmented shells… …   Universalium

• amphibolite facies — One of the major divisions of the mineral facies classification of metamorphic rocks, encompassing rocks that formed under conditions of moderate to high temperatures (950°F, or 500°C, maximum) and pressures. Less intense temperatures and… …   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

• Geology of Alderley Edge — Infobox Mountain Name = Alderley Edge Photo = Stormy Point 1993.jpg Caption = Stormy Point Elevation = 183 m (600 ft) Location = Cheshire, ENG Range = Prominence = Coordinates = Topographic OS Landranger 118 Grid ref UK = SJ870760 Grid ref… …   Wikipedia

• Devonian Period — Interval of geologic time from 417 to 354 million years ago; it was the fourth period of the Paleozoic Era. During the Devonian, a giant continent was situated in the Southern Hemisphere (see Gondwana), and other landmasses were located in the… …   Universalium

• Marine transgression — A marine transgression is a geologic event during which sea level rises relative to the land and the shoreline moves toward higher ground, resulting in flooding. Transgressions can be caused either by the land sinking or the ocean basins filling… …   Wikipedia

• Tectonostratigraphy — In geology tectonostratigraphy refers either to rock sequences in which large scale layering is caused by the stacking of thrust sheets or nappes in areas of thrust tectonics or the effects of tectonics on lithostratigraphy.Tectonically formed… …   Wikipedia

• Bend Arch-Fort Worth Basin — Infobox Oil field name = Bend Arch Fort Worth Basin Province region = North Central Texas country = United States coordinates = locblock = offonshore = Onshore operators = Devon Energy, Chesapeake Energy, EOG Resources, XTO Energy, EnCana, Range …   Wikipedia

• Outcrop — An outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth. [1] View of a bedrock outcrop near San Carlos Water, Falklands Islands. As exemplified in the picture an outcrop has to be immersed in soil… …   Wikipedia