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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 393 - 405 (13page)
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Petrographic and whole rock geochemical studies were carried out on sandstones and shales of the Devonian Accraian Group of southern Ghana to constrain their provenance and tectonic setting. Modal petrographic analysis on the sandstones show that the framework grains are sub-angular to rounded in shape. Upper continental crust normalized multi-element plots, as well as trace element ratios, suggests that the sandstones and shales were mainly derived from felsic and recycled sources. Modal mineralogy of the sandstones, and major and trace element geochemistry of sandstones and shales further suggest that they are of recycled orogenic provenance. Discriminant function based major-element diagram suggests that the Accraian sandstones and shales were deposited in a Passive margin setting. Weathering indices suggest high degree of source area weathering. It is of the view that the Accraian sandstones and shales, most probably, received sediment input mostly from the Paleoproterozoic Birimian metasedimentary rocks and their associated granitoids and/or the Neoproterozoic sedimentary rocks from the Volta Basin which are both positioned northwest and north, respectively, of the Accraian sedimentary rocks.
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참고문헌 (40)
참고문헌 신청
Anani, C. / 1999 / Sandstone petrology and provenance of the Neoproterozoic Voltaian Groupin the southeastern Voltaian Basin, Ghana / Sedimentary Geology 128:83~98
Asiedu, D.K. / 2005 / Provenance of late Ordovician to early Cretaceous sedimentary rocks from Southern Ghana as inferred from Nd isotopes and trace elements / Journal of African Earth Science 41:318~319
Asiedu, D.K. / 2010 / Palaeoclimatic Control on the Composition of Palaeozoic Shales from Southern Ghana, West Africa / Ghana Mining Journal 12:7~16
Armstrong-Altrin, J.S. / 2004 / Geochemistry of sandstones from the Upper Miocene Kudankulam Formation, southern India: implications for provenance, weathering, and tectonic setting / Journal of Sedimentary Research 74:285~297
Basu, A. / 1975 / Re-evaluation of the use of undulatory extinction and polycrystal linity in detrital quartz for provenance interpretation / Journal of Sedimentary Petrology 45:873~882
Asiedu, D.K. / 2005 / Provenance of late Ordovician to early Cretaceous sedimentary rocks from Southern Ghana as inferred from Nd isotopes and trace elements / Journal of African Earth Science 41:318~319
Asiedu, D.K. / 2010 / Palaeoclimatic Control on the Composition of Palaeozoic Shales from Southern Ghana, West Africa / Ghana Mining Journal 12:7~16
Armstrong-Altrin, J.S. / 2004 / Geochemistry of sandstones from the Upper Miocene Kudankulam Formation, southern India: implications for provenance, weathering, and tectonic setting / Journal of Sedimentary Research 74:285~297
Basu, A. / 1975 / Re-evaluation of the use of undulatory extinction and polycrystal linity in detrital quartz for provenance interpretation / Journal of Sedimentary Petrology 45:873~882
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