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Minerals (Basel, Switzerland), 2022 Granitoid gneisses dominated by tonalitic–trondhjemitic–granodioritic (TTG) compositions, with metamorphic supracrustal rocks consisting of sedimentary and volcanic rocks, are widely exposed in the Eastern Hebei terrane, North China Craton ...
Zhuang Li, Cong Zhang, Chunjing Wei
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Pre-3750 Ma Supracrustal Rocks From the Nuvvuagittuq Supracrustal Belt, Northern Québec
Earth and Planetary Science Letters, 2007Geochemistry and U-Pb ion microprobe zircon geochronology guided by high-resolution mapping (1:50 scale) was used to define a minimum age of ca. 3750 Ma for supracrustal rocks from the Nuvvuagittuq supracrustal belt (NSB) in the northern Superior Province, Quebec (Canada).
S J Mojzsis
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Ancient Archaean Supracrustal Rocks From the Limpopo Mobile Belt
Nature, 1980A preliminary study has been made to establish pressure, temperature and water activity parameters for the high-grade metamorphism of the early Archaean supracrustal rocks exposed in the Limpopo Mobile Belt near Messina, South Africa. The results reported here indicate that a significant orogenic crustal thickness up to ∼30 km was developed before ∼3 ...
Peter C Horrocks
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Archaean supracrustal rocks from the Lewisian near Stoer, Sutherland
Scottish Journal of Geology, 1985Synopsis A previously unreported supracrustal suite, the “Cnoc an t-Sidhean Supracrustals”, together with at least three generations of acid and basic orthogneiss form the Lewisian complex at Stoer. Both supracrustals and orthogneisses underwent Badcallian granulite facies metamorphism and polyphase deformation, including the formation of ...
I. Cartwright +4 more
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Mesoproterozoic (Grenville-age) granitoids and supracrustal rocks in Kaokoland, northwestern Namibia
Precambrian Research, 2017Abstract We identified and describe rocks of a late Mesoproterozoic Grenville-age igneous province and associated supracrustal sequence in northwestern Kaokoland, Namibia. These rocks are ca. 1176–1534 Ma in age and mostly consist of pinkish granitic and trondhjemitic plutons that are unfoliated within the Palaeoproterozoic Epupa Metamorphic Complex ...
Alfred Kröner, Yamirka Rojas-Agramonte
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Correlation of the Precambrian Supracrustal Rocks of Coastal Labrador and South-western Greenland
Nature Physical Science, 1972RECENT geological mapping and the compilation and publication of the first geological map of Labrador1 indicate that three broad groups of Precambrian supracrustal rocks, each separated in time by a principal orogenic cycle, can be recognized in coastal Labrador (Table 1).
J. S. SUTTON +3 more
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The metamorphism of the supracrustal rocks at Garpenberg, south central Sweden
Geologiska Föreningen i Stockholm Förhandlingar, 1984Abstract The supracrustal sequence at Garpenberg, south central Sweden, consists mainly of felsic gneisses with subordinate intercalations of amphibolites and stratabound sulfide and iron deposits. During the Svecokarelian orogeny this sequence was isoclinally folded, metamorphosed and intruded by synorogenic granitoids.
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Chapter 8 Svecofennian supracrustal rocks
2005Publisher Summary A substantial part of the Paleoproterozoic crust of southern and central Finland is characterized by 1.92 Ga turbiditic sedimentary and - 1.90-1.88 Ga arc-type volcanic rocks. Fluvial to shallow-water sedimentary rocks, felsic schists, sedimentary carbonates, black shales, and MORB- and WPL-like basalts are locally also common.
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The precambrian supracrustal rocks of Finland and their tectono-exogenic evolution
Precambrian Research, 1986Abstract The Precambrian supracrustal rocks of Finland were produced during four main evolutionary stages: (1) late Archaean (Pre-Svecokarelidic) greenstone-schist evolution on an unknown basement; (2) at least four cycles of early Proterozoic (Karelian) continental-epi/pericontinental sedimentation and volcanism on or next to the cratonized late ...
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Possible link between the oldest supracrustal unit and the oldest rock unit of China
Precambrian Research, 2020Abstract Caozhuang Group (or Caozhuang supracrustal sequence) in Eastern Hebei, North China Craton (NCC) may represent the oldest supracrustal unit of China. Abundant Eoarchean and Paleoarchean detrital zircons (up to 3.88 Ga) in paragneisses of Caozhuang Group provide valuable memories of the earliest crustal evolution of China.
Peng Liou +3 more
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