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Magmatic stratigraphy in the Bushveld Northern Lobe: continuous geophysical and mineralogical data from the 2950 m Bellevue drillcore
We present a large database of geophysical, petrological and mineralogical measurements for the ~3000 m Bellevue borehole through the entire Upper Zone (UZ) and about half of the Main Zone (MZ) ofExpand
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U‐Pb Geochronology and Isotope Geochemistry of the Archean and Proterozoic Rocks of North‐Central Madagascar
New U‐Pb zircon ages and Sm‐Nd and Rb‐Sr isotopic data are presented for orthogneisses from north‐central Madagascar, including Île Sainte Marie, Alaotra‐Beforona, Maevatanana, andExpand
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Petrogenesis of Neoproterozoic Granitoids and Related Rocks from the Seychelles: the Case for an Andean-type Arc Origin
compositions ( Nd 750 = +5·46 to −0·87; ISr 750 = 0·7021– The Seychelles islands consist of undeformed and unmetamorphosed, 0·7061) that can be modelled as basaltic magmas derived from metaluminousExpand
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Sedimentology, geochronology and provenance of the Proterozoic Itremo Group, central Madagascar, and implications for pre-Gondwana palaeogeography
Proterozoic metasediments of the Itremo Group in central Madagascar probably represent a passive margin sequence predating Gondwana assembly. The quartzites are well-sorted quartz arenites thatExpand
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THE TEMPORALITY OF ANORTHOSITES
The compositions, textures, associated rocks and tectonic environments of anorthosites allow categorization into six different types, some of which show distinct age-restrictions in terrestrial andExpand
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Late Cretaceous magmatism in Madagascar: palaeomagnetic evidence for a stationary Marion hotspot
Late Cretaceous basaltic volcanics in the Morondava Basin (SW Madagascar) possess high-quality and pre-fold palaeomagnetic data (declination 353.5°, inclination −54.8°, α95 = 2.4°). TheExpand
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Deep mantle structure as a reference frame for movements in and on the Earth
Significance Since the Pangea supercontinent formed about 320 million years ago, plumes that sourced large igneous provinces and kimberlites have been derived from the edges of two stableExpand
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Late Cretaceous India–Madagascar fit and timing of break‐up related magmatism
A U–Pb zircon age of 91.2 ± 0.2 Myr from western India (St. Mary islands) confidently links India with the Late Cretaceous magmatic province in Madagascar (≈ 84–92 Ma), and the U–Pb age is withinExpand
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Continental crust beneath southeast Iceland
Significance The Iceland hotspot is widely thought to be the surface expression of a deep mantle plume from the core–mantle boundary that can be traced back in time at least 62 My. However, someExpand
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