HYDROLOGICAL EVOLUTION IN THE HOLOCENE (7,400-0 YEARS BP) OF LAKE-SONACHI (KENYA)

Authors
DAMNATI B TAIEB M
Citation
B. Damnati et M. Taieb, HYDROLOGICAL EVOLUTION IN THE HOLOCENE (7,400-0 YEARS BP) OF LAKE-SONACHI (KENYA), Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 322(2), 1996, pp. 141-148
Citations number
19
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes → ACNP
ISSN journal
12518050
Volume
322
Issue
2
Year of publication
1996
Pages
141 - 148
Database
ISI
SICI code
1251-8050(1996)322:2<141:HEITH(>2.0.ZU;2-5
Abstract
A sedimentary core (15.50 m long) was taken with a piston corer from a barge in the centre of the crater Lake Sonachi analysed for sedimento logy (magnetic susceptibility) and geochemistry (organic matter and ca lcium carbonate) and radiocarbon dated. Two lacustrine phases are reco gnized between 7,400 and 3,200 a BP and between < 2,000 a BP and the p resent. The first phase of high lake-level is also recorded in the nei ghbouring lakes Naivasha, Nakuru and Elmenteita, and in several other East African lakes. This Holocene period is also marked by some volcan ic explosions.