Grenville-Age versus Pan-African Magnetic Anomaly Imprints in Western Dronning Maud Land, East Antarctica
作者： A. Golynsky , J. Jacobs
DOI: 10.1086/317964
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摘要: Abstract In this article, we examine aeromagnetic data from a part of the western margin Pan‐African East Antarctic Orogen. The Orogen represents southern continuation African that together formed during collision and West Gondwana late Neoproterozoic/Early Paleozoic times (at ca. 580–515 Ma). is exposed in Heimefrontfjella, Dronning Maud Land, where front orogen crops out as Heimefront Shear Zone. Crust west Zone has typical Mesoproterozoic to early Neoproterozoic (Grenville‐age) K‐Ar Ar‐Ar mineral cooling ages, magnetic anomalies are broad, high amplitude, elongate, craton parallel with long wavelengths. Zone, ages range at between 570 470 Ma, anomaly pattern entirely different. Here, large low persists, which overprinted b...
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