Linear gilgai

Beckmann, G. G.; Thompson, C. H.; Hubble, G. D.

doi:10.1080/00049187308702647

Cited by 8 publications

(3 citation statements)

References 1 publication

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“…Linear gilgai are commonly identified in Australia (Hallsworth and Beckman, 1969;Beckmann et al, 1973), but are rare in Africa or not reported in the literature. Examples of both normal and linear gilgai have been identified at Rustenburg, South Africa, and the normal gilgai have shorter wavelengths of ≤5 m, but the linear gilgai have wavelengths of ≥8 m (Verster et al, 1973;Fey et al, 2010).…”

Section: Gilgai Topographymentioning

confidence: 97%

“…3H) ranges from 0.8 to 1.6 m. In comparison, the average wavelength from Kisaaka 15 is much larger at 6.4 m with amplitudes of 0.55 m on average. These large wavelengths and amplitudes can form in linear gilgai that form on sloping landscapes, commonly, 1°to 3°(Hallsworth et al, 1955;Hallsworth and Beckman, 1969;Beckmann et al, 1970Beckmann et al, , 1973.…”

Section: Gilgai Topographymentioning

confidence: 99%

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Reconstruction of a semi-arid late Pleistocene paleocatena from the Lake Victoria region, Kenya

et al. 2015

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The effect of changing environment on the evolution of Homo sapiens is heavily debated, but few data are available from equatorial Africa prior to the last glacial maximum. The Karungu deposits on the northeast coast of Lake Victoria are ideal for paleoenvironmental reconstructions and are best studied at the Kisaaka site near Karunga in Kenya (94 to > 33 ka) where paleosols, fluvial deposits, tufa, and volcaniclastic deposits (tuffs) are exposed over a ~ 2 km transect. Three well-exposed and laterally continuous paleosols with intercalated tuffs allow for reconstruction of a succession of paleocatenas. The oldest paleosol is a smectitic paleo-Vertisol with saline and sodic properties. Higher in the section, the paleosols are tuffaceous paleo-Inceptisols with Alfisol-like soil characteristics (illuviated clay). Mean annual precipitation (MAP) proxies indicate little change through time, with an average of 764 ± 108 mm yr− 1 for Vertisols (CALMAG) and 813 ± 182 to 963 ± 182 mm yr− 1 for all paleosols (CIA-K). Field observations and MAP proxies suggest that Karungu was significantly drier than today, consistent with the associated faunal assemblage, and likely resulted in a significantly smaller Lake Victoria during the late Pleistocene. Rainfall reduction and associated grassland expansion may have facilitated human and faunal dispersals across equatorial East Africa.

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Section: Gilgai Topographymentioning

confidence: 97%

Section: Gilgai Topographymentioning

confidence: 99%

Reconstruction of a semi-arid late Pleistocene paleocatena from the Lake Victoria region, Kenya

et al. 2015

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“…Many important papers and reports detailing the characteristics and behaviour of this distinctive global soil type were published from Australian research in the period 1950-85. As examples, the formation and landscapes of Vertosols had been investigated by Hallsworth et al (1955) and Beckmann et al (1973), while the drainage and other hydraulic features of Vertosols had been investigated by Talsma and van der Lelij (1976) and McIntyre et al (1982). In 1981, a symposium on the properties and utilisation of cracking clay soils was held at the University of New England, Armidale, Little et al 1992) and crop nutrition (Rochester et al 1991(Rochester et al , 1993Constable et al 1992) in cotton-growing Vertosols continued, such that when the inaugural World Cotton Conference was held in Brisbane in early 1994, these two topics constituted the most prominent soil-related sessions (Constable and Forrester 1995).…”

Section: Introductionmentioning

confidence: 99%

A review of the soil science research legacy of the triumvirate of cotton CRC

Cattle

Field

2013

Crop Pasture Sci.

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For nearly two decades (1994–2012) a series of three consecutive Cooperative Research Centres (CRC) dealing with cotton production provided the impetus and financial support for a substantial body of soil science research in eastern and northern Australia. Focusing on the most commonly utilised soil for irrigated crop production, the Vertosol, CRC-affiliated soil researchers undertook detailed soil inventories of cotton-growing valleys in New South Wales, and tackled a range of applied soil research questions that faced the entire Australian cotton industry. Across the broad categories of soil mapping and characterisation, soil physical condition, salinity and sodicity, soil chemical fertility, and soil carbon and biota, some 120 CRC-affiliated research papers were published in peer-reviewed journals during the years of the CRC. Findings from this body of research were fed back to the industry through conferences, extension workshops and materials, and to a lesser extent, the peer-reviewed publications. In certain cases, underpinning basic research was carried out concurrently with the more applied research, meaning that the cotton CRC were effectively supporting advances in the discipline of soil science, as well as in sustainable cotton production. A feature of the soil research portfolio over the span of the three cotton CRC was that priorities shifted according to the interplay of three factors; the natural maturation of research topics and the concomitant evolution of cotton farming systems, the rising importance of environmental implications of agricultural land use, and the emergence of carbon as a national research priority. Furthermore, the commitment of the CRC to education resulted in the involvement of undergraduate and postgraduate university students in all aspects of the soil research effort. A legacy of the triumvirate of cotton CRC is a wide-ranging body of both applied and basic knowledge regarding the physical, chemical and biological attributes of Australian Vertosols used for irrigated agriculture.

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Structural analysis of soil microrelief in palaeosols of the Lower Jurassic “Laterite Derivative Facies” (Mishhor and Ardon formations) Makhtesh Ramon, Israel

Goldbery

1982

Sedimentary Geology

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Linear gilgai

Cited by 8 publications

References 1 publication

Reconstruction of a semi-arid late Pleistocene paleocatena from the Lake Victoria region, Kenya

Reconstruction of a semi-arid late Pleistocene paleocatena from the Lake Victoria region, Kenya

A review of the soil science research legacy of the triumvirate of cotton CRC

Structural analysis of soil microrelief in palaeosols of the Lower Jurassic “Laterite Derivative Facies” (Mishhor and Ardon formations) Makhtesh Ramon, Israel

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