Wei Gangjian et al. (2003): Climatic impact on Al, K, Sc and Ti in marine sediments; evidence from ODP Site 1144, South China Sea

Leg/Site/Hole:
ODP 184
ODP 184 1144
Identifier:
2006-000922
georefid
Creator:
Wei Gangjian
Chinese Academy of Sciences, Guangzhou Institute of Geochemistry, Guangzhou, China
author
Liu Ying
Tongji University, China
author
Li Xianhua
author
Shao Lei
author
Liang Xirong
author
Identification:
Climatic impact on Al, K, Sc and Ti in marine sediments; evidence from ODP Site 1144, South China Sea
2003
Geochemical Journal
Geochemical Society of Japan, Nagoya, Japan
37
5
593-602
Al, K, Sc and Ti concentrations of the terrestrial material-dominant sediments from ODP site 1144 were reported. Comparison between the bulk and the acid-leached sediments indicates that about 20-30% of the Al, K and Sc in the bulk sediments are not hosted in terrestrial detritus, rather they are of authigenic origin. However, authigenic Ti is negligible. The results indicate that Ti rather than Al is the best proxy for terrestrial materials. Significant climate controls are displayed in the Al/Ti, K/Ti and Sc/Ti variation patterns both for the bulk and the acid leached sediments. Such variation patterns can be mainly accounted for in terms of climate change in their provenance areas in South China. Elevated Al/Ti, K/Ti and Sc/Ti ratios during interglacial periods indicate that chemical weathering then was stronger than during glacial periods, which might be related to a more humid climate in interglacial periods.
English
Serial
Coverage:Geographic coordinates:
North:20.0311
West:117.2508East: 117.2508
South:20.0311
General geochemistry; alkali metals; aluminum; Cenozoic; chemical ratios; chemostratigraphy; clay minerals; concentration; cores; detritus; geochemistry; isotope ratios; isotopes; Leg 184; marine sediments; metals; North Pacific; Northwest Pacific; O-18/O-16; Ocean Drilling Program; ODP Site 1144; oxygen; Pacific Ocean; paleoclimatology; potassium; Quaternary; rare earths; scandium; sediments; sheet silicates; silicates; South China Sea; stable isotopes; terrigenous materials; titanium; West Pacific;
.