Sallie L. Burrough

Sallie L. Burrough
University of Oxford | OX · School of Geography and the Environment

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31
Publications
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1,062
Citations

Publications

Publications (31)
Article
Dryland fluvial systems respond to hydroclimate changes on Quaternary timescales, yet deciphering the palaeoenvironmental histories they preserve is often complex. Whilst hydrological signals are preserved in sediment stores as variations in sediment amount, character and composition, studies in dryland settings such as Namibia that link sedimentol...
Article
Single grain OSL dating has been used to produce new chronologies for three previously investigated sites in the northern Kalahari basin in western Zambia containing both Middle and Later Stone Age material (Phillipson, 1975a, b). We find that Mode 3 (Middle Stone Age, MSA) assemblages in the Upper Zambezi Valley pre-date the Last Glacial Maximum....
Article
Full-text available
Analysis of sedimentary materials using a portable luminescence reader (or portable optically stimulated luminescence reader POSL), is a useful, rapid (a few minutes per sample), cost-effective and safe (not requiring exposure to chemicals) way to establish relative sample age. Moving beyond information that guides initial field interpretations, or...
Article
Full-text available
The INQUA Dunes Atlas project has developed a global digital database of chronological information for periods of inland or continental sand dune accumulation and stabilization. The database comprises information on the site location (including coordinates), dune type, and stratigraphic context, pertinent analytical information (e.g. luminescence p...
Chapter
The interior southern African basin (Kalahari) is a remarkable region, with a complex and dynamic environmental history and a long record of utilization by human populations during the late Quaternary. Paleoenvironmental reconstructions are beginning to provide a spatially detailed record of landscape and hydrological dynamics in the Kalahari, with...
Article
The spatial pattern of precipitation variability in tropical and subtropical Africa over the late Quaternary has long been debated. Prevailing hypotheses variously infer (1) insolation-controlled asymmetry of wet phases between hemispheres, (2) symmetric contraction and expansion of the tropical rainbelt, and (3) independent control on moisture ava...
Article
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Peat deposits from wetlands in the Upper Zambezi Valley provide an important long-term window on ecosystem dynamics in the Kalahari basin during the late Holocene. We use fossil pollen and macro-charcoal extracted from peat cores contained in three wetland sites to examine the response of vegetation to regional climate change. We find that during t...
Article
A series of small, shallow seasonally, or interannually, waterlogged depressions (dambos) in the upper Zambezi Valley in western Zambia hold shallow peat deposits and are bounded on their western margin by sandy lunette dunes. Using luminescence dating of sands, fossil pollen analyses and the macrocharcoal record from cored peat, the long-term stab...
Conference Paper
Full-text available
The INQUA Dunes Atlas project has developed a global digital database of chronologic information for periods of desert sand dune accumulation and stabilization. The database currently contains 3278 luminescence and 535 radiocarbon records of directly dated periods of aeolian sand deposition from 1200 inland dune locations throughout the world, most...
Article
Over 600 luminescence ages have to date been published from southern Africa's continental dunefields and isolated dunes, providing a rich record of aeolian system dynamics during the Late Quaternary. The majority of records come from sites within the five linear dune-dominated dunefields of the Kalahari, with lesser representation of other major du...
Article
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Prediction of biotic responses to future climate change in tropical Africa tends to be based on two modelling approaches: bioclimatic species envelope models and dynamic vegetation models. Another complementary but underused approach is to examine biotic responses to similar climatic changes in the past as evidenced in fossil and historical records...
Article
A suite of crescentic landforms is visible from remotely sensed imagery within the Ntwetwe panPan in the Makgadikgadi basin, Botswana. We investigate the most distinct of these landforms using morphometric measurements, sedimentary data and Optically Stimulated Luminescence (OSL) signal analysis. Comparative analysis with previously published barch...
Article
a b s t r a c t The Middle Kalahari is characterised by significant regional scale geomorphic activity and landscape change during the late Quaternary period. Very little however, is known about vegetation dynamics over this period due in part to the absence of well-preserved organic records. Here we test the application of phytolith analyses to sa...
Article
Climate and environmental change in the Late Quaternary are widely regarded as key drivers of early human development and dispersal. In Africa, robust records of change are required to assess the nature of potential impacts. Today’s late Quaternary palaeoenvironmental/palaeoclimate reconstructions from the interior southern African basin (Kalahari)...
Article
Extreme Late Quaternary climatic events, sometimes of considerable continental extent, are being proposed as major contributors to ancestral human behaviour, particularly migration, in Africa. Most recently, a catastrophic drought in the Afro-Asian monsoon region has been proposed for 16 000–17 000 years ago, driven by global impacts of the Heinric...
Article
Dunefields are today often found in regions where environmental conditions are no longer conducive to widespread aeolian transport and deposition, and are thus seen as potential archives of palaeoenvironmental information. Some dune types are more suitable for this purpose than others, and linear dunes (used here synonymously with longitudinal dune...
Article
Paleoclimate records across Late Quaternary Africa reveal high amplitude variability between wet and dry conditions. There is abundant evidence that the extents of arid areas and lakes are not static and that during numerous incursions in the past the African continent has hosted vegetation, lakes and rivers not present today. The spatial distribut...
Article
Full-text available
The Kalahari region has become a major source of Quaternary palaeoenvironmental data derived primarily from the analysis of geomorphological proxies of environmental change. One suite of data, from palaeolacustrine landforms, has recently provided a new record of major hydrological changes in the last 150 ka [Burrough, S. L., Thomas, D. S. G., Bail...
Article
Full-text available
A distinct series of beach ridges marking the former shorelines of large inter-connected lacustrine basins in the Kalahari can be clearly identified from Landsat imagery and Shuttle Radar Topography Mission (SRTM) data. These basins, which form the terminal sump of the Okavango system in northern Botswana, are now almost completely dry. During the...
Article
Lakes are highly informative repositories of information of the terrestrial response to regional and global climate drivers. In Quaternary studies lake floor records are now frequently used to establish the magnitude, timing and geographical extent of humid/arid transitions over timescales of 102–104 years. While the resolution of this record is un...
Article
A distinct series of beach ridges marking the former shorelines of large interconnected lacustrine basins in the Kalahari can be clearly identified from Landsat imagery and Shuttle Radar Topography Mission (SRTM) data. These basins, which form the terminal sump of the Okavango system in northern Botswana, are now almost completely dry. During the Q...
Article
A systematic drilling and optical dating programme on Middle Kalahari beach ridge (relict shoreline) sediments has enabled the identification of multiple episodes of lake high stands of an extensive palaeolake system at the terminus of the Okavango Delta, northern Botswana. This paper presents 23 ages from the Mababe Depression and establishes four...
Article
Large lake basins, now almost entirely devoid of water in the Kalahari’s semi arid environment, can be clearly identified from Landsat imagery of northern Botswana. These basins are delineated by a series of beach ridges marking the former shorelines of an inundated area that, at its largest extent, encompassed 60,000 km2. In the last 30 yr over 15...

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