Barker, P. and Telford, R. and Gasse, Françoise and Thevenon, Florian (2002) Late Pleistocene and Holocene palaeohydrology of Lake Rukwa, Tanzania, inferred from diatom analysis. Palaeogeography, Palaeoclimatology, Palaeoecology, 187 (3-4). pp. 295-305. ISSN 0031-0182Full text not available from this repository.
Diatom analysis has been used to provide information on the lake-level fluctuations of Lake Rukwa during the last 21.7 ka. Diatom-inferred chemical variables (conductivity, pH, anion and cation ratios) indicate that at the LGM lake level was low, probably driven by a low P:E ratio, but with sufficient water to avoid desiccation. Following the LGM, deep water conditions were obtained through a series of steps until maximum water depth was reached by at least 13.5 ka. The high lake-level phase lasted through the Early Holocene until after 6.7 ka. A shallow saline lake has occupied the basin from ca. 5.5 ka until the present day. The pattern of reconstructed lake-level fluctuation in Lake Rukwa is similar to that from Lake Tanganyika and other lakes from the equatorial and northern tropical zone. We can confirm that the N-tropical mode of millennial scale lake-level change since the LGM extended to at least 8°S.
|Journal or Publication Title:||Palaeogeography, Palaeoclimatology, Palaeoecology|
|Additional Information:||Nov 15 Late Pleistocene and Holocene palaeohydrology of Lake Rukwa, Tanzania, inferred from diatom analysis Times Cited: 27 2nd International Congress of Limnogeology (ILIC 2) MAY 25-28, 1999 UNIV WESTERN BRETAGNE, INST UNIV EUROPEAN MER, PLOUZANE, FRANCE|
|Uncontrolled Keywords:||diatoms ; transfer functions ; lake levels ; tropical palaeoclimate ; Late Quaternary|
|Subjects:||G Geography. Anthropology. Recreation > GE Environmental Sciences|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
|Deposited On:||19 Mar 2012 09:34|
|Last Modified:||19 Jan 2017 03:19|
Actions (login required)