supracrustal


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supracrustal

(ˌsuːprəˈkrʌstəl)
adj
(Geological Science) geology relating to rocks that overlie the basement rock of the crust
References in periodicals archive ?
Mineralization at Slttberg is hosted by 1.8-1.9 Ga (Svecofennian) supracrustal rocks (metavolcanics and metasediments) located along the southwestern flank of a large gabbroic intrusive complex.
Borborema Province covers approximately 380,000 [km.sup.2] and is marked by a mosaic of tectonic blocks: a Paleoproterozoic basement and scattered Archean nuclei, Meso to Neoproterozoic supracrustal rocks, and large intrusions of granites (Van Schmus et al., 2008; Silva, Ferreira, Lima, Sial, & Silva, 2015).
In seismically triggered hydrothermal systems, the episodic enhancement of permeability along crustal-scale fault drains creates a transient hydraulic continuity between overpressured, sublithostatic deep reservoirs and possibly hydrostatic, supracrustal fluids (e.g., [26,99]) (Figure 9).
It thus has properties transitional to 'S-type' granites and was likely derived in part by melting or assimilation of supracrustal metasedimentary rocks (Chappell and White 1974).
Busigny, "Identification of chemical sedimentary protoliths using iron isotopes in the > 3750 Ma Nuvvuagittuq supracrustal belt, Canada," Earth and Planetary Science Letters, vol.
105/94/1124 - Monitoring the supracrustal blocks movements at the Bohemian Massif and Alpine-Carpathian Arc border by Global Positioning System (GPS) method.
The Ediacaran to Palaeozoic sediments are widely distributed and form a number of distinct basin depocentres within the supracrustal successions of the EEC (see Nikishin et al.
They are mainly N-S to NNE-SSW trending belts of low grade supracrustal (and minor volcanic) assemblages.
The Precambrian Basement rocks of Obajana area, North central Nigeria comprise of schists and gneisses which have been subjected to major supracrustal tectonic events such as the Dahomeyan (3000 [+ or -] 200Ma), Eburnean (1850 [+ or -] 250Ma), Kibaran (1000 [+ or -] 100Ma), and Pan-African (550 [+ or -] 100Ma) (Ezepue and Odigi, 1993).
Zone 2 comprises magnetically low-relief supracrustal rocks of the Lake Harbour Group, which are intruded by magnetite-bearing plutonic rocks and subsequently folded.
One of the oldest such places is in Greenland, in an area called the Isua supracrustal belt.
The oldest such area is the Greenland formation known as the Isua supracrustal belt, with rocks from 3.7 to 3.8 billion years old.