Role of Aeolian Dust in Shaping Landscapes and Soils of Arid and …
2018年5月10日 · Whether aeolian sediments accumulate in discrete patches, forming the above-ground mounds called heuweltjies, or are more evenly distributed, but hidden from view below the land’s surface as they contribute to soil development, inputs of aeolian dust play a central role in shaping landscapes, soils, and the composition of biotic communities ...
(PDF) Role of Aeolian Dust in Shaping Landscapes and
2018年5月10日 · Recent findings suggest that the formation of the distinct, regularly-spaced heuweltjies involves a linked set of biological and physical processes. These include nutrient accumulation by termites...
Landscapes and Landforms of South Africa—An Overview
2015年3月6日 · It is demonstrated that much of the South African macroscale geomorphology and site-specific landform development is controlled not only by geology, but also by past epeirogenic uplift,...
Role of Aeolian Dust in Shaping Landscapes and Soils of Arid and …
The deposition of fine aeolian sediment profoundly influences the morphology of several different landscapes of the arid and semi-arid western portion of South Africa. Such landscapes and features include: (1) regularly-spaced mounds known as
Extensive Quaternary aeolian deposits in the Drakensberg …
2014年8月15日 · Extensive aeolian sand deposits identified in Drakensberg foothills. Combination of remote sensing and fieldwork identifies low-relief landforms. Distribution of aeolian deposits is the key control on gullying in the area. Periglacial conditions during the …
Extensive Quaternary aeolian deposits in the Drakensberg foothills ...
2014年8月15日 · Extensive Quaternary sand deposits have been identified in the Drakensberg/Rooiberge foothills in a study area surrounding the town of Clarens, in the Free State of South Africa, including the Golden Gate Highlands National Park.
From the aeolian landform to the aeolian mineral deposit in …
2022年2月1日 · Quaternary aeolian landforms (AL) can convert into aeolian mineral deposits of economic grade through concentration of metals (Ti, Fe, Zr, Sn, REE, Au, PGE), industrial minerals (silica) and gems (diamonds), purification (winnowing) of trash minerals (feldspar, mica) and the provision of accommodation space for uranium and base metals.
(PDF) Multiphase late Quaternary aeolian sediment accumulation …
Palaeosols are common along the coastline of southern South Africa as stacked aeolian dune deposits but have rarely been studied. We selected two late Quaternary palaeosols exposed in a marine cliff-face at Koeberg and coastal barrier dune at Goukamma, South Africa in order to improve our understanding of their pedogenesis and palaeoclimate ...
Landscapes and Landforms of South Africa—An Overview
2015年1月1日 · South Africa thus has a diverse climatic influence on contemporary landform development, ranging from hyper-arid, hot aeolian (Chaps. 9 and 15 ) to cool periglacial (Chap. 6 ). Region-specific weathering and erosion are also …
EVIDENCE FOR LAND DEGRADATION FROM AEOLIAN ... - Wiley …
2012年6月27日 · Evidence for historical and recent/contemporary aeolian activity in the west‐central Free State Province, South Africa, is here reviewed, synthesised and supplemented by new data. The evidence is derived from three sources, namely lunette dunes and their capping sediments, fence‐line dunes and buried fences, and contemporary dust entrainment.