Late Quaternary sedimentation within a submarine channel-levee system offshore Cap Timiris, Mauritania
Late Quaternary sedimentation within a submarine channel-levee system offshore Cap Timiris, Mauritania
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毛里塔尼亚蒂米里斯角近海海底河道-堤坝系统内的晚第四纪沉积
DOI:
10.1016/j.margeo.2007.02.005
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发表时间:
2007
期刊:
影响因子:
2.9
通讯作者:
Henrich
中科院分区:
文献类型:
--
作者:
Zühlsdorff;Henrich
Aeolian and fluvial sediment transport to the Atlantic Ocean offshore Mauritania were reconstructed based on grain-size distributions of the carbonate-free silt fraction of three marine sediment records of Cap Timiris Canyon to monitor the climatic evolution of present-day arid north-western Africa. During the late Pleistocene, predominantly coarse-grained particles, which are interpreted as windborne dust, characterise glacial dry climate conditions with a low sea level and extended sand seas that reach onto the exposed continental shelf off Mauritania. Subsequent particle fining and the abrupt decrease in terrigenous supply are attributed to humid climate conditions and dune stabilisation on the adjacent African continent with the onset of the Holocene humid period. Indications for an ancient drainage system, which was discharging fluvial mud offshore via Cap Timiris Canyon, are provided by the finest end member for early to mid Holocene times. However, in comparison to the Senegal and Niger River further south, the river system connecting Cap Timiris Canyon with the Mauritanian hinterland was starved during the late Holocene and is non-discharging under present-day arid climate conditions.
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影响因子:
4.2
作者:
K. Wien;C. Holz;M. Kölling;H. Schulz
通讯作者:
H. Schulz
DOI:
10.1029/2004eo420001
发表时间:
2004
期刊:
Eos, Transactions American Geophysical Union
影响因子:
--
作者:
S. Krastel;T. Hanebuth;A. A. Antobreh;R. Henrich;C. Holz;M. Kölling;H. Schulz;K. Wien;R. Wynn
通讯作者:
R. Wynn
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
B. Stabell
通讯作者:
B. Stabell
影响因子:
4.1
作者:
L. V. Camp;Leo Nykjær;E. Mittelstaedt;P. Schlittenhardt
通讯作者:
P. Schlittenhardt
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
G. Weltje
通讯作者:
G. Weltje