fissured rock

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• rock elm — noun 1. tall widely distributed elm of eastern North America • Syn: ↑Ulmus thomasii • Hypernyms: ↑elm, ↑elm tree • Member Holonyms: ↑Ulmus, ↑genus Ulmus 2. large ornamental tree with …   Useful english dictionary

• tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

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• dam — dam1 /dam/, n., v., dammed, damming. n. 1. a barrier to obstruct the flow of water, esp. one of earth, masonry, etc., built across a stream or river. 2. a body of water confined by a dam. 3. any barrier resembling a dam. v.t. 4. to furnish with a …   Universalium

• Dam — /dam, dahm/, n. (Carl Peter) Henrik /kahrl pee ter hen rik/; Dan. /kahrddl pay teuhrdd hen rddik/, 1895 1976, Danish biochemist: Nobel prize for medicine 1943. * * * I Barrier built across a stream, river, or estuary to conserve water for such… …   Universalium

• Château de Roquefixade — The ruined wall of Château de Roquefixade The Château de Roquefixade is a ruined castle built on a cliff overlooking the village of Roquefixade, situated 8km (5 miles) west of Lavelanet French département of Ariège. There are records of a castle… …   Wikipedia

• fracture filling — /ˈfræktʃə fɪlɪŋ/ (say frakchuh filing) noun material found in cracks in fissured rock; it is commonly of siliceous or carbonate composition and may have traces of ore minerals in it …  

• gas reservoir — In geology, a naturally occurring storage area, characteristically a folded rock formation, that traps and holds natural gas. The reservoir rock must be permeable and porous to contain the gas, and it has to be capped by impervious rock in order… …   Universalium

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• Clark Reservation State Park — Glacier Lake and the cliff of the fossil waterfall in September. Clark Reservation State Park is a state park in Onondaga County, New York. The park is in the Town of DeWitt, south of Syracuse. It wa …   Wikipedia