A5066303647- Geological and Geochemical Analysis
- Geomagnetism and Paleomagnetism Studies
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- French Urban and Social Studies
- Geology and Paleoclimatology Research
- High-pressure geophysics and materials
- Wine Industry and Tourism
- Seismic Imaging and Inversion Techniques
- Geological Studies and Exploration
- Geological formations and processes
- Paleontology and Stratigraphy of Fossils
- Horticultural and Viticultural Research
- Geological and Geophysical Studies
- Geochemistry and Elemental Analysis
- Seismic Waves and Analysis
- Medieval European Literature and History
- Geological and Geophysical Studies Worldwide
- Drilling and Well Engineering
- Methane Hydrates and Related Phenomena
- Marine and environmental studies
- Rock Mechanics and Modeling
- French Language Learning Methods
- Multiculturalism, Politics, Migration, Gender
- Earthquake Detection and Analysis
Géosciences Rennes
2023-2024
Université de Rennes
2023-2024
Centre National de la Recherche Scientifique
2013-2024
Southern University of Science and Technology
2020-2024
CY Cergy Paris Université
2011-2023
University of Johannesburg
2014-2020
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2020
National Research Foundation
2018
Université de Strasbourg
2013
University of Groningen
1964-1969
Abstract U-Pb geochronology on baddeleyite is a powerful technique that can be applied effectively to chronostratigraphy. In southern Africa, the Kaapvaal Craton hosts well-preserved Mesoarchean Paleoproterozoic geological record, including Neoarchean Ventersdorp Supergroup. It overlies Witwatersrand Supergroup and its world-class gold deposits. The comprises Klipriviersberg Group, Platberg Pniel Group. However, exact timing of formation controversial. Here we present 2789 ± 4 Ma 2787 2...
The Neoarchaean Belingwe greenstone belt of the Zimbabwe craton consists a well-preserved succession rocks low metamorphic grade and strain. We present new age constraints for Ngezi Group discuss them in light evolution. propose crustal destabilization proto-craton as result global flare mantle-derived magmatism at ~ 2.75 Ga. This gave rise to extension Mesoarchaean granitoid-greenstone terrain, rapid subsidence and, initially, deposition transgressive cover (Manjeri Formation). High degrees...
The Kaapvaal craton, which hosts rocks as old 3.6 billion years, began to stabilize around 3.2 years ago with the progressive development of its subcontinental lithospheric mantle (SCLM). This has undergone continuous and relatively well-preserved geological evolution through numerous episodes erosion, sedimentation magmatic additions, provides a unique setting for studying geodynamics. study focuses primarily on interpretation existing literature some newly acquired data HFSE, REE Lu-Hf...
The Kaapvaal craton (South Africa) was the host of several major magmatic events during Palaeoproterozoic, including volcanic Hekpoort and Ongeluk Formations. Their possible comagmatic origin is subject a long debate. We performed palaeomagnetic study Formation to be compared with available palaeopole Formation, but also contribute apparent polar wander path craton. Characterization magnetic mineralogy by three-axis thermal demagnetization isothermal remanent magnetization susceptibility...
SUMMARY Many, but not all, current ripples show log‐normal grain‐size distribution and good sorting (P. D. Trask). A range in medians was measured from fifty to several hundred microns. Turbidite are log‐normal, very well‐sorted restricted of fine sand silt (< 130 μ) because the particles have been supplied suspension at rippling velocity. Experimental formed about 50–60 cm/sec similar composition structure turbidite ripples. The continuous supply results climbing grain size internal both...
The Uitkomst Complex is considered to be coeval with, and genetically linked the Rustenburg Layered Suite (RLS) of Bushveld Large Igneous Province. This study reports new paleomagnetic, geochemical geochronological results from a crosscutting dyke at Nkomati Mine. Primary magnetisations for complex are statistically indistinguishable. This, together with signature dyke, suggests late-magmatic link Complex. A Virtual Geomagnetic Pole calculated Longitude 28.7°N Latitude 58.5°E (dp = 6.2; dm...
Abstract We present a magnetic fabric investigation of small oriented rock fragments from gouges and wall rocks the Chelungpu fault (Taiwan), where Chi‐Chi earthquake occurred (M w 7.6, 1999). Samples are obtained surface outcrops at depth ~1 km, including 3‐mm‐thick principal slip zone. Wall show foliation roughly parallel to bedding, whereas they oblique surface. Within gouges, mean shape ellipsoid is oblate, degree anisotropy up 12%. The diverges ~40° plane, compatible with simple shear...
Research Article| June 01, 2018 Mineral transformations during thermal demagnetization of sideritic jasper mesobands in jaspilites the ~3.25 Ga Fig Tree Group Barberton Greenstone Belt, Kaapvaal craton (South Africa) H. Wabo; Wabo Paleoproterozoic Mineralization (PPM Group). Department Geology University Johannesburg, P O Box 524, Auckland Park 2006, South AfricaDepartment Science and Technology – National Foundation Centre Excellence for Integrated Energy Resource Analysis (DST-NRF CIMERA),...
Abstract Based on 30 high-resolution U-Th dating controls, we reconstruct stalagmite δ 18 O records from 45 to 15 thousand years ago (ka B.P., before AD 1950) the Shizhu Cave, which is located in southwestern China under influence of both Indian Summer Monsoon (ISM) and East Asian (EASM). By integrating with other Asia during middle late last glacial, our results reveal two main moisture trajectories: one Ocean, through Cave towards central China, Pacific Ocean northern China. The systematic...
Abstract Numerous Mesoproterozoic alkaline intrusions belonging to the Pilanesberg Alkaline Province are present within Transvaal sub-basin of Kaapvaal Craton. The Complex is best-known example; it represents one world’s largest complexes, and associated with a northwest-southeast trending dyke swarm that extends from Botswana southwest Johannesburg. This paper documents results petrological geochemical study thin mafic sill (here referred as an igneous body, AIB), which intrudes ca. 2 200...
Abstract The Palaeoproterozoic Hekpoort Formation of the Pretoria Group is a lava-dominated unit that has basin-wide extent throughout Transvaal sub-basin South Africa. Additional correlative units may be present in Kanye Botswana. key characteristic formation its general geochemical uniformity. Volcaniclastic and other sedimentary rocks are relatively rare succession but dominant some locations. outcrops sporadic basin mostly occur form gentle hills valleys, mainly encircling Archaean domes...