A ~3 Ga record of mafic dyke and sill swarms across the Kaapvaal Craton: Further structural and geochemical clues for six Large Igneous Provinces

Content Provider	Semantic Scholar
Author	Klausen
Copyright Year	2016
Abstract	An exceptionally well preserved stratigraphy across much of South Africa exposes the existence of at least six major mafic igneous provinces that can potentially be classified as LIPs. In chronological order, these are the (1) ~2.95 Ga Dominion-Pongola (which are here inferred to be roughly coeval), (2) ~2.7 Ga Ventersdorp, (3) ~2.06 Ga Bushveld Igneous Complex, (4) ~1.9 Ga Hartley-Soutpansberg (again, inferred parts of an extended magmatic event), (5) ~1.1 Ga Umkondo, and (6) ~0.18 Ga Karoo LIP. Mafic LIPs are obviously fed from mantle reservoirs and typically through extensive feeder dyke swarms, but it is only after the advent of precise U-Pb dating of extracted baddeleyites (e.g., [1]) that we have recently been able to properly unravel the complex dyke arrays that cross-cut the Kaapvaal Craton and relatively older cover rocks. Following upon a previous attempt [2], this is my second personal review to link feeder dyke swarms to individual LIPs, summarised as:
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.americangeosciences.org/sites/default/files/igc/4868.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article