Zobrazeno 1 - 10
of 1 256
pro vyhledávání: '"Peralkaline rock"'
Autor:
Ray Macdonald, Jan Pawłowski, Bogusław Bagiński, Marcin Stachowicz, Jakub Kotowski, Harvey E. Belkin
Publikováno v:
Comptes Rendus. Géoscience. 353:171-186
Publikováno v:
Neues Jahrbuch für Mineralogie - Abhandlungen. 197:185-208
Akademický článek
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Autor:
Dieudonné Tchokona Seuwui, Hervé Bellon, Benoît Joseph Mbassa, Rose Noel Ngo Belnoun, Pierre Wandji, Pierre Wotchoko, Jacques-Marie Bardintzeff, Sébastien Owona, Zénon Itiga
Publikováno v:
Journal of Geosciences and Geomatics. 9:160-176
The Cretaceous Ngaou Boh anorogenic complex (NBAC) located in the far North Adamawa Plateau, the centre domain of the Cameroon Line constitutes a plutonic-volcanic ring association. The whole rock K-Ar datation yields a crystallization age of ca. 74
Publikováno v:
Geological Magazine. 158:1911-1936
The Flowers River Igneous Suite of north-central Labrador comprises several discrete peralkaline granite ring intrusions and their coeval volcanic succession. The Flowers River Granite was emplaced into Mesoproterozoic-age anorthosite–mangerite–c
Publikováno v:
Gondwana Research. 92:172-183
The Millennium Eruption (ME) of Changbaishan volcano (Baitoushan, Paektu) at 946 CE (Common Era) is one of the largest explosive eruptions on Earth during Holocene times. We date unpolished zircon crystal faces from diverse ME products collected from
Publikováno v:
Acta Geochimica. 40:575-601
The present study deals with the detailed field geology, mineralogy, geochemistry, and spectrometric prospection of rare metals and radioactive minerals associated with granitic pegmatites in the Gabal Um Lassaf- Abu Dob- Um Atelia- Kadabora- Kab El
Autor:
C.G. Smith, R.M.L. Wignall
Publikováno v:
Proceedings of the Geologists' Association. 132:16-23
The small peralkaline microgranite intrusion that forms the island of Ailsa Craig in the Firth of Clyde represents the southern-most intrusion of the British Palaeogene Volcanic Province (BPVP) within Scotland. The granitic rocks of Ailsa Craig, famo
Publikováno v:
Geological Society, London, Memoirs. 55:577-614
In Marie Byrd Land and Ellsworth Land 19 large polygenetic volcanoes and numerous smaller centres are exposed above the West Antarctic Ice Sheet along the northern flank of the West Antarctic Rift System. The Cenozoic (36.7 Ma to active) volcanism of
Publikováno v:
Geoscience Frontiers, Vol 12, Iss 1, Pp 39-52 (2021)
Late Mesoproterozoic igneous rocks in the SW Yangtze Block are important for understanding the role of it in reconstruction of the Rodinia supercontinent. In the present study, we report new geochronological, geochemical, and Nd–Hf isotopic data fo