crystalline rock


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crystalline rock

[′kris·tə·lən ′räk]
(petrology)
Rock made up of minerals in a clearly crystalline state.
Igneous and metamorphic rock, as opposed to sedimentary rock.
References in periodicals archive ?
Crystalline rocks are exposed in the Inner Gorge as the Vishnu Schist (metamorphic rock derived from precursor sedimentary rock) and the Brahma Schist (a metamorphosed basalt), which represents volcanic rock that was originally interbedded with sediments of the Vishnu.
In crystalline rocks below this depth, the weight of overlying rock should close off all cracks and pores, according to traditional thinking.
The temperature field variation in the monolithic crystalline rocks will be in range of background temperature values for the Proterozoic-Archaean rocks (12-13 [degrees]C) (Fig.
The lowermost part of the sandy ejecta includes conglomeratic sandstone interlayers with pebbles of black Dictyonema shale (kerogen-enriched argillite) and crystalline rocks (Kleesment et al.
At the same time, the information gained through this research has implications for fundamental science--demonstrating that abiogenic reactions that may have generated prebiotic organic molecules in the early earth continue to play a significant role in the production of hydrocarbons in Precambrian Shield crystalline rocks.
Seismic data collected over the Bjerkreim Layered Intrusion illustrates the capability of the seismic reflection technique to image the layering in these crystalline rocks.
Be it the outcrops of crystalline rocks at Jebel Qahwan in north of Bilad Bani Bu Ali, the brown crystalline rocks of the Samail ophiolites, huge piles of pillow lava in Wadi Al Jizzi, Stone Park at Duqm, or the beautiful layering of sedimentary beds at Jebel Samhan in Dhofar, each location narrates the stories of Oman's geological history.
The structure of the crystalline basement displayed on the map is based on the results of complex (petrographical, petrophysical, and geochemical) investigations of 32 500 m of drill cores of crystalline rocks from 490 drill holes, as well as on the information obtained by gravimetric and magnetometric survey.
Owing to their high density compared with crystalline rocks, massive sulphide ore bodies should be excellent seismic reflectors.
Mastering the extraction and work of difficult crystalline rocks such as granite or gneiss will have also have needed quite a long experience.
The Athabasca Basin uranium mines produce from deposits that occur at an erosional unconformity marking the contact of sediments with underlying basement crystalline rocks.