Oman as a fragment of ediacaran eastern gondwana

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dc.contributor.authorGómez-Pérez, Irene
dc.contributor.authorFrei, Dirk
dc.contributor.authorMorton, Andrew
dc.date.accessioned2024-11-13T10:30:47Z
dc.date.available2024-11-13T10:30:47Z
dc.date.issued2024
dc.description.abstractComprehensive U-Pb detrital zircon geochronology of Ediacaran sandstones from Oman indicates that they originated from neoproterozoic basement with a peak magmatic age of ca. 850–780 Ma (Tonian), with lesser paleoproterozoic and Ediacaran sources and renewed magmatic input starting at ca. 550 Ma. Comparison with detrital zircons from the Arabian-Nubian and NW Indian shields supports an eastern Gondwana affinity for the Ediacaran succession of Oman. Tonian basement sediment sources are present in Oman. Sources for older Paleoproterozoic zircons (ca. 2500 and 1800 Ma) are not found in Oman but are known from the cratonic Indian Shield. The signal of the main magmatic events of the juvenile Arabian-Nubian shield, peaking at ca. 640–620 Ma, is rare or absent in the Ediacaran rock succession of Oman. However, deformed Ediacaran clastic units with an Arabian-Nubian shield affinity occur in western Oman. Influx of latest Ediacaran–early Cambrian zircons (550–525 Ma) is interpreted as due to final Cambrian Angudan/Malagasy orogeny-related magmatism.
dc.identifier.citationGómez-Pérez, I., Morton, A., Rawahi, H.A. and Frei, D., 2024. Oman as a fragment of Ediacaran eastern Gondwana. Geology, 52(6), pp.473-478.
dc.identifier.issnhttps://doi.org/10.1130/G51989.1
dc.identifier.urihttps://hdl.handle.net/10566/19659
dc.language.isoen
dc.publisherGeological Society of America
dc.subjectNeoproterozoic
dc.subjectGondwana affinity
dc.subjectArabian-nubian shield
dc.subjectPaleoproterozoic zircons
dc.subjectGeochronology of Ediacaran
dc.titleOman as a fragment of ediacaran eastern gondwana
dc.typeArticle

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