The Taoudenni basin dike swarm (northern Mali) is one of the densest dike complexes of the previous termCentral Atlantic Magmatic Provincenext term (CAMP). A combined geometrical (dike directions), geochemical (major and trace elements, Sr and Nd isotopes), and geochronological (40Ar/39Ar dating) study is presented for the first time on the...
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2005 (v1)Journal articleUploaded on: March 25, 2023
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2007 (v1)Journal article
The Jurassic Karoo large igneous province consists of vast quantities of basaltic lava-flows, giant dike swarms and poorly dated silicic magmatism. The Karoo magmatism occurred over more than 3x106 km² and was associated with the opening of the Indian Ocean. We present new 40Ar/39Ar geochronological data concerning the easternmost part (i.e....
Uploaded on: February 28, 2023 -
2006 (v1)Journal article
Continental flood basalts consist of vast quantities of lava, sills and giant dyke swarms that are associated with continental break-up. The commonly radiating geometry of dyke swarms in these provinces is generally interpreted as the result of the stress regime that affected the lithosphere during the initial stage of continental break-up or...
Uploaded on: December 3, 2022 -
2006 (v1)Journal article
Continental flood basalts consist of vast quantities of lava, sills and giant dyke swarms that are associated with continental break-up. The commonly radiating geometry of dyke swarms in these provinces is generally interpreted as the result of the stress regime that affected the lithosphere during the initial stage of continental break-up or...
Uploaded on: October 11, 2023 -
December 2019 (v1)Journal article
We investigate the age and chemical composition of the granitic basement of the Gassane borehole in Senegal. 40 Ar/ 39 Ar and U/Pb dating yield ages of 200.3 ± 2 Ma and 198.4 ± 1.8 Ma, respectively, demonstrating that it is not related to the Variscan orogeneis as previously thought. Rather, we suggest that this granite derived from crustal...
Uploaded on: December 4, 2022 -
May 18, 2005 (v1)Journal article
The peak activities of continental flood basalts are currently considered as huge and brief (1 m.y.) magmatic events, with strong implications for geodynamics and biotic turnover. New 40Ar/39Ar dates on the Karoo flood basalts (southern Africa) show a longer duration of magmatism (8 m.y., with 6 m.y. for the main volume) with an apparent...
Uploaded on: March 25, 2023 -
March 2011 (v1)Journal article
The Central Atlantic Magmatic Province (CAMP), emplaced at the Triassic-Jurassic (T-J) boundary (~ 200 Ma), is among the largest igneous provinces on Earth. The Maranhão basin in NE Brazil is located around 700 km inland and 2000 km from the site of the earliest Pangea disruption. The CAMP tholeiites occur only in the western part of the basin...
Uploaded on: December 4, 2022 -
2005 (v1)Journal article
The structural organization of a giant mafic dyke swarm, the Okavango complex, in the northern Karoo Large Igneous Province (LIP) of NE Botswana is detailed. This N110°E-oriented dyke swarm extends for 1500 km with a maximum width of 100 km through Archaean basement terranes and Permo-Jurassic sedimentary sequences. The cornerstone of the study...
Uploaded on: March 25, 2023