Quaternary slope processes and morphologies in the upper Sehonghong Valley, eastern Lesotho

Proceedings of the Geologists' Association

Volumn 122, Issue 1, 2011, Pages 179-186

  Grab, S W ^a   Mills, S C ^a,b,c  

^a UNIVERSITY OF THE WITWATERSRAND   (South Africa)

^b QUEEN MARY UNIVERSITY OF LONDON   (United Kingdom)

^c KINGSTON UNIVERSITY   (United Kingdom)

Author keywords

Colluvial mantles; Late Quaternary; Lesotho; Pronival ramparts; Slopes

Indexed keywords

ACCUMULATION RATE; ALPINE ENVIRONMENT; GEOMORPHOLOGY; MAPPING METHOD; PALEOENVIRONMENT; PALEOSOL; QUATERNARY; RADIOCARBON DATING; SEDIMENTATION; SLOPE DYNAMICS; VALLEY;

DRAKENSBERG; LESOTHO;

EID: 78650798697     PISSN: 00167878     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.pgeola.2010.02.001     Document Type: Article

References (45)

1. Ballantyne C.K. Some observations on the morphology and sedimentology of two active protalus ramparts, Lyngen, northern Norway. Arctic and Alpine Research 1987, 19:167-174.
2. Ballantyne C.K., Kirkbride M.P. The characteristics and significance of some late-Glacial protalus ramparts in upland Britain. Earth Surface Processes and Landforms 1986, 11:659-671.
3. Benn D.I. Macrofabric. Practical Guide to the Study of Glacial Sediments 2004, 93-114. Arnold, London. D.J.A. Evans, D.I. Benn (Eds.).
4. Benn D.I. Clast morphology. Practical Guide to the Study of Glacial Sediments 2004, 78-92. Arnold, London. D.J.A. Evans, D.I. Benn (Eds.).
5. Boelhouwers J.C., Holness S., Meiklejohn K.I., Sumner P.D. Observations on a blockstream in the vicinity of Sani Pass, Lesotho highlands, southern Africa. Permafrost and Periglacial Processes 2002, 13:251-257.
6. Dowdeswell J.A., Sharp M.J. Characterization of pebble fabrics in modern terrestrial glacigenic sediments. Sedimentology 1986, 33:699-710.
7. Grab S. Block and debris deposits in the high Drakensberg, Lesotho, southern Africa: implications for high altitude slope processes. Geografiska Annaler 1999, 81A:1-16.
8. Grab S. Stone-banked lobes and environmental implications, high Drakensberg, southern Africa. Permafrost and Periglacial Processes 2000, 11:177-187.
9. Grab S. Characteristics and palaeoenvironmental significance of relict sorted patterned ground, Drakensberg plateau, southern Africa. Quaternary Science Reviews 2002, 21:1729-1744.
10. Grab S. Thermal regime through a sorted circle and stone-banked lobe, Drakensberg, southern Africa. Zeitschrift für Geomorphologie 2004, 48:501-518.
11. Grab S.W., Van Zyl C., Mulder N. Controls on basalt terrace formation in the eastern Lesotho highlands. Geomorphology 2005, 67:473-485.
12. Hanvey P.M., Lewis C.A. A preliminary report on the age and significance of Quaternary lacustrine deposits at Birnam, north-east Cape Province, South Africa. South African Journal of Science 1990, 86:271-273.
13. Hanvey P.M., Lewis C.A. Sedimentology and genesis of slope deposits at Sonskyn, Eastern Cape Drakensberg, South Africa. Permafrost and Periglacial Processes 1991, 2:31-38.
14. Hanvey P.M., Marker M.E. Sedimentary sequences in the Tlaeeng Pass area, Lesotho. South African Geographical Journal 1994, 76:63-67.
15. Harris C. Some observations concerning the morphology and sedimentology of a protalus rampart, Okstindan, Norway. Earth Surface Processes and Landforms 1986, 11:673-676.
16. Harris C. Mechanisms of mass movement in periglacial environments. Slope Stability 1987, 531-559. John Wiley and Sons Ltd., Chichester. M.G. Anderson, K.S. Richards (Eds.).
17. Holmgren K., Karlén W., Shaw P.A. Paleoclimatic significance of the stable isotopic composition and petrology of a Late Pleistocene stalagmite from Botswana. Quaternary Research 1995, 43:320-328.
18. Holmgren K., Karlén W., Lauritzen S.E., Lee-Thorp J.A., Partridge T.C., Piketh S., Repinski P., Stevenson C., Svanered O., Tyson P.D. A 3000-year high-resolution stalagmite-based record of palaeoclimate for northeastern South Africa. The Holocene 1999, 9:295-309.
19. Jerardino A. Late Holocene Neoglacial episodes in southern South America and southern Africa: a comparison. The Holocene 1995, 5:361-368.
20. Johnson, R.F., 1988. A history of climate and marine productivity from sediment off the west coast of southern Africa. Final Report, National Programme for Weather, Climate and Atmosphere research, FRD, Pretoria, 6 pp.
21. Lewis C.A., Hanvey P.M. Quaternary fan and river terrace deposits, Glen Orchy, East Cape Drakensberg, South Africa. Permafrost and Periglacial Processes 1991, 2:39-48.
22. Marker M.E. Sedimentary sequences at Sani Top. Lesotho highlands, southern Africa. The Holocene 1994, 4:406-412.
23. Marker M.E. Dating of valley fills at Golden Gate Highlands National Park. South African Journal of Science 1994, 90:361-363.
24. Marker M.E. Late Quaternary environmental implications from sedimentary sequences at two high altitude Lesotho sites. South African Journal of Science 1995, 91:294-298.
25. Marker M.E. New radiocarbon dates from Lesotho. South African Journal of Science 1998, 94:239-240.
26. Mills S.C., Grab S.W. Debris ridges along the southern Drakensberg escarpment as evidence for Quaternary glaciation in southern Africa. Quaternary International 2005, 129:61-73.
27. Mills S.C., Grab S.W., Carr S.J. Recognition and palaeoclimatic implications of Late Quaternary niche glaciation in eastern Lesotho. Journal of Quaternary Science 2009, 24:647-663.
28. Mills S.C., Grab S.W., Carr S.J. Late Quaternary moraines along the Sekhokong range, eastern Lesotho: contrasting the geomorphic history of north- and south-facing slopes. Geografiska Annaler 2009, 91:121-140.
29. Norström E., Scott L., Partridge T.C., Risberg J., Holmgren K. Reconstruction of environmental and climate changes at Braamhoek wetland, eastern escarpment South Africa, during the last 16,000 years with emphasis on the Pleistocene-Holocene transition. Palaeogeography, Palaeoclimatology, Palaeoecology 2009, 271:240-258.
30. Ono Y., Watanabe T. A protalus rampart related to alpine debris flows in the Kuranosuke Cirque, northern Japanese Alps. Geografiska Annaler 1986, 86A:213-223.
31. Palacios D., García Sánchez-Colomer M. The influence of geomorphologic Heritage on present nival erosion: Peñalara, Spain. Geografiska Annaler 1997, 79A:25-40.
32. Phillips C.J., Davies T.R.H. Determining rheological parameters of debris flow material. Geomorphology 1991, 4:101-110.
33. czowska A. Nivation in the High Tatras, Poland. Geografiska Annaler 1995, 77A:251-258.
34. Rose J. Small-scale spatial variability of some sedimentary properties of lodgement till and slumped till. Proceedings of the Geological Society of Glasgow 122-123 1974, 12-28.
35. Schulze R.E. Hydrology and water resources of the Drakensberg. Natal Town and Regional Planning Reports. 42 1979, University of Natal, Pietermaritzburg.
36. Shakesby R.A. Pronival (protalus) ramparts: a review of forms, processes, diagnostic criteria and palaeoenvironmental implications. Progress in Physical Geography 1997, 21:394-418.
37. Shakesby R.A., Matthews J.A., McCarroll D. Pronival (" Protalus" ) Ramparts in the Romsdalsalpane, southern Norway: Forms, Terms, Subnival processes and alternative mechanisms of formation. Arctic and Alpine Research 1995, 27:271-282.
38. Shakesby R.A., Matthews J.A., McEwen L.J., Berrisford M.S. Snow-push processes in Pronival (protalus) rampart formation: Geomorphological evidence from Smørbotn, Romsdalsalpane, southern Norway. Geografiska Annaler 1999, 81A:31-45.
39. Sumner P.D. A contemporary winter ground thermal profile in the Lesotho highlands and implications for active and relict soil frost phenomena. Earth Surface Processes and Landforms 2003, 28:1451-1458.
40. Sumner P.D. Geomorphic and climatic implications of relict openwork block accumulations near Thabana-Ntlenyana, Lesotho. Geografiska Annaler 2004, 86A:289-302.
41. Talma A.S., Vogel J.C. Late Quaternary palaeotemperatures derived from a speleothem from Cango Caves, Cape Province, South Africa. Quaternary Research 1992, 37:203-213.
42. 14C dates. Radiocarbon 1993, 35:317-322.
43. Thorn C.E. The geomorphic role of snow. Annals of the Association of American Geographers 1978, 68:414-425.
44. Tyson, P.D., Preston-Whyte, R.A., Schulze, R.E., 1976. The climate of the Drakensberg, Natal Town and Regional Planning Commission, 31, Pietermaritzburg.
45. Watson A., Price Williams D., Goudie A.S. The palaeoenvironmental interpretation of colluvial sediments and palaeosols of the Late Pleistocene Hypothermal in southern Africa. Palaeogeography, Palaeoclimatology and Palaeoecology 1984, 45:225-249.