Výsledky vyhledávání - "Bernard Vink"

Origins of strandline duricrusts around the Makgadikgadi Pans (Botswana Kalahari) as deduced from their chemical and isotope composition

Autor: Cornelis Vanderpost, P. Huntsman-Mapila, Bernard Vink, Susan Ringrose, S. Diskins, Chris Harris, W. Matheson

Publikováno v: Sedimentary Geology. 219:262-279

Trace elements together with some O and C isotope analysis were undertaken on duricrust strandline deposits in the palaeo-Makgadikgadi sub-basin (PMSB) to provide insight into palaeo-climatic conditions through the interpretation of calcrete, silcret

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b89e169c7af268ec13dea86add003f38
https://doi.org/10.1016/j.sedgeo.2009.05.021

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Diagenesis in Okavango fan and adjacent dune deposits with implications for the record of palaeo-environmental change in Makgadikgadi–Okavango–Zambezi basin, northern Botswana

Autor: Bernard Vink, Thebe Kemosidile, P. Huntsman-Mapila, W. S. Downey, Cornelis Vanderpost, Dikitso Kolokose, Susan Ringrose, Stephan Coetzee, Martin Fey

Publikováno v: Geomorphology. 101:544-557

This work considers the spatial distribution and ages of western MOZ basin siliclastic sediments prior to providing insights into the diagenesis of degraded dune and alluvial fan sands. Previously published and new TL/OSL ages imply that extensive ov

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60400521b7ea62f9b49eb7e8c9e448cb
https://doi.org/10.1016/j.geomorph.2008.02.008

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Origins and palaeo-environments of Kalahari duricrusts in the Moshaweng dry valleys (Botswana) as detected by major and trace element composition

Autor: Bernard Vink, Chris Harris, W. Matheson, P. Huntsman-Mapila, Ali B Kampunzu, Susan Ringrose

Publikováno v: Journal of African Earth Sciences. 48:199-221

Geo-chemical analyses of duricrusts from the margins of the Moshaweng dry valleys (Kalahari, central Botswana) was undertaken mainly to provide a diagnostic basis for palaeo-environmental conditions and to help stimulate the development of a worldwid

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::824b69b245c6eadf2357c9ba6cf93011
https://doi.org/10.1016/j.jafrearsci.2006.10.007

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Sedimentological and geochemical evidence for palaeo-environmental change in the Makgadikgadi subbasin, in relation to the MOZ rift depression, Botswana

Autor: Cornelis Vanderpost, W. S. Downey, Susan Ringrose, Ali B Kampunzu, Wilma Matheson, P. Huntsman-Mapila, Stephan Coetzee, Bernard Vink

Publikováno v: Palaeogeography, Palaeoclimatology, Palaeoecology
Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2005, 217 (3-4), pp.265-287. ⟨10.1016/j.palaeo.2004.11.024⟩

This work considers new evidence for palaeo-environmental change taking place during the Pleistocene in northern Botswana. Duricrusted strandlines along the northeastern margin of Sua Pan provide palaeo-environmental data pertaining to the Makgadikga

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19809878a3f93b7990349388feed20ff
https://doi.org/10.1016/j.palaeo.2004.11.024

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A case of rhinolithiasis in Botswana: a mineralogical, microscopic and chemical study

Autor: Bernard Vink, Richard Wormald, Piet van Hasselt

Publikováno v: The Journal of Laryngology & Otology. 116:1036-1040

A case of rhinolithiasis in Southeast Botswana was treated and after removal in hospital, the rhinolith was subjected to macroscopic and microscopic examination, X-ray diffraction analysis, electron microscope analysis and partial botanical analysis.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f799be2e225e3789cb258d38101c979
https://doi.org/10.1258/002221502761698793

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Origin and palaeo-environments of calcareous sediments in the Moshaweng dry valley, southeast Botswana

Autor: Wilma Matheson, W. S. Downey, Ali B Kampunzu, Susan Ringrose, Bernard Vink

Publikováno v: Earth Surface Processes and Landforms. 27:591-611

Quaternary sedimentation in the Moshaweng dry valley of southeastern Botswana is evaluated on the basis of geomorphological evolution and sedimentological analyses. Stratigraphic evidence reveals an upper surface (1095 m) containing abundant sil-calc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::868d03473380db2729304d905ea6e379
https://doi.org/10.1002/esp.343

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Nature of sedimentary deposits in the western Makgadikgadi basin, Botswana

Autor: Francis Sefe, Bill Downey, Dane Genecke, Bernard Vink, Susan Ringrose

Publikováno v: Journal of Arid Environments. 43:375-397

Quaternary sedimentation in the western Makgadikgadi basin of north central Botswana is evaluated on the basis of new evidence from satellite imagery and sedimentological analyses. Thematic Mapper imagery interpretation, combined with field evidence,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::731c750005601291c6b1119db2f1735d
https://doi.org/10.1006/jare.1999.0548

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Cryptic indicators of provenance from the geochemistry of the Okavango Delta sediments, Botswana

Autor: P. Huntsman-Mapila, Bernard Vink, Susan Ringrose, Ali B Kampunzu

Publikováno v: Sedimentary Geology
Sedimentary Geology, Elsevier, 2005, 174 (1-2), pp.123-148. ⟨10.1016/j.sedgeo.2004.11.001⟩

The siliciclastic sediments of the Okavango inland Delta of northwest Botswana have a modal composition of quartz arenites and result from a complex history, including transport by river and deposition in a nascent rift basin located in a desert envi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80cb6322457cc1ee4826967594d47eca
https://hal.archives-ouvertes.fr/hal-00112645

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