clastic rock

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  • noun

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(geology) a rock composed of broken pieces of older rocks

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Overlying the rocks of the Horton Group are shallow marine to evaporite deposits of the Windsor Group, comprising a basal stromatolitic laminated dolostone layer overlain by a sporadically developed massive gypsum layer, up to 120 m thick, which is in turn overlain by fossiliferous carbonate rocks and fine-grained clastic rocks typical of a sabkha-mudflat environment (Geldsetzer 1977; Hamblin 1989a).
The second hole is underway approximately 350 metres to the north and is currently above the low-angle fault in Mississippian clastic rocks, which the Company's geologists believe could act as a "cap rock" by ponding mineralizing fluids beneath the low-angle fault at this location.
Limestones are the dominant lithofacies, but clastic rocks and coal beds are also present.
The BPV property, one mile west of CONO is underlain by upper-plate clastic rocks and chert but lower-plate carbonate rocks may occur at depths that could be economically attractive.
The data show intermediate resistivity representing a wedge of mixed clastic and carbonate material between the in-place, rooted Paleozoic carbonate and clastic rocks and the flanking, down-dropped volcanic rocks to the east.
Upper Cenozoic clastic rocks assigned to the Agha Jari and Bakhtyari formations are exposed at the fold crests (Fig 2).
5 million cubic feet of natural gas per day, creating the highest capacity of clastic rocks in Bohai.
The basement of the Himmetoglu and Hatildag fields is composed of Upper Cretaceous clastic rocks.
Less than 1 km west of the Black Cape Fault along the shoreline, a thin succession of red clastic rocks, which Bourque and Lachambre (1980) informally refer to as the Lazy Cove sedimentary unit, is intercalated between two lava flows of the Early Devonian Black Cape Volcanics.
Disseminated gold and silver mineralization occurs in stratabound zones spatially related to a regional slip fault zone lying at the unconformity between Lower Carboniferous limestones and overlying Upper Triassic clastic rocks.
The discovery well of LD 21-2-1D is drilled and completed at a depth of 2,831 meters and encountered oil pay zones with total thickness of about 170 meters, representing the thickest oil layers found in the exploration of Bohai clastic rocks in recent years.