Zobrazeno 1 - 10
of 156
pro vyhledávání: '"B. Klausen"'
Autor:
Martin B. Klausen
Publikováno v:
Geological Society, London, Special Publications. 518:17-42
Autor:
Martin B. Klausen
Publikováno v:
Geoscience Frontiers, Vol 11, Iss 5, Pp 1635-1649 (2020)
A compilation of 178 more precise ages on 10 potential Large Igneous Provinces (LIPs) across southern Africa, is compared to Earth’s supercontinental cycles, where 5 more prominent LIP-events all formed during the assembly of supercontinents, rathe
Autor:
Martin B. Klausen, Mimmi K.M. Nilsson
Publikováno v:
Precambrian Research. 329:88-107
Following upon previous work on the 1630 Ma Melville Bugt Dyke Swarm (MBDS) along the NW coast of Greenland, this paper confirms its proposed continuation in SE Greenland, into an extraordinary >2000 km long trans-Greenlandic dyke swarm. This correla
Publikováno v:
Precambrian Research. 329:70-87
Progress with supercontinental reconstructions relies on accurate age determinations for continental geological units such as mafic dyke swarms. Here we present zircon and baddeleyite U-Pb ID-TIMS isotope data of six mafic dykes from the Archean Nort
Autor:
Martin B. Klausen, Adam A. Garde
Publikováno v:
Geochimica et Cosmochimica Acta. 233:187-190
Publikováno v:
Geochimica et Cosmochimica Acta. 229:129-146
The dissolution rate of sapphire in melts in the CAS system of varying silica activity, viscosity and degree of alumina saturation has been determined at 1600 °C and 1.5 GPa. After an initiation period of up to 1800 s, dissolution is controlled by d
Autor:
Richard E. Ernst, Martin B. Klausen, Ulf Söderlund, Moha Ikenne, Abdelhakim El Bahat, Nasrrddine Youbi, Brian Cousens
Publikováno v:
Journal of African Earth Sciences. 127:77-87
The Precambrian inliers of the Anti-Atlas belt across the southern part of Morocco contain numerous mafic dyke and sill swarms, which are thought to represent the erosional remnants of Proterozoic Large Igneous Provinces (LIPs). As part of an extende
Autor:
Julio Cesar Horta de Almeida, Henrique Bruno, João Paulo Giro, Martin B. Klausen, Bernroider Manfred, Wolfram Tetzner, Eliane Guedes, Monica Heilbron, Michael McMaster, Claudio de Morisson Valeriano, Franz Neubauer
Publikováno v:
Journal of South American Earth Sciences. 108:103218
The wide range of geochemical and isotopic signatures of dyke swarms are essential for defining tectonic settings and isotopic reservoirs, as they represent windows into the Earth's mantle. The Early-Cretaceous Buzios-Cabo Frio dyke swarm (BCFDS) rep
Publikováno v:
Precambrian Research. 354:106043
Western South Africa between Cape Town and the Namibian border hosts many dyke swarms that strike broadly to the NW and NNW, towards the reconstructed plume-centre of the c. 130 Ma Parana-Etendeka Large Igneous Province (LIP) but are undated. U-Pb ID
Autor:
Martin B. Klausen, Adam A. Garde
Publikováno v:
Journal of the Geological Society. 173:954-965
Major pseudotachylyte zones constitute a spectacular component of the renowned c. 2.023 Ga Vredefort impact structure, South Africa, but it has always been difficult to explain how they were formed. In his original account, in 1916, Shand interpreted