The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
HEAVY MINERAL ASSEMBLAGES IN CORE EC2005 IN THE INNER SHELF OF EAST CHINA SEA AND THE ORIGIN
Author(s): 
Pages: 1292-1303
Year: Issue:  6
Journal: Oceanologia et Limnologia Sinica

Keyword:  Heavy mineralprovenancebore-hole EC2005inner shelf of the East China Sea;
Abstract: Heavy minerals in the bore hole EC2005, located in the southern center of mud area in the inner shelf of East China Sea, was identified and analyzed for their significance of provenances since 17.3ka BP. The results show that in the sediment of grain size 0.063—0.25 mm, the average content of heavy minerals is 27.26% in range of 3.66%—89.62%. High content of heavy minerals appears in the horizon of rich authigenic pyrite. The heavy minerals included lamellar mineral, metallic mineral, amphibole, epidote, dolomite, pyroxene, typical metamorphic minerals, altered minerals and authigenic pyrite, and they altogether took more than 96.00% of the total amount, but varied in content through core EC2005.. The distribution of heavy minerals can be divided into five units from the Unit Ⅰto Unit Ⅴ from bottom to top; the characteristic minerals are lamellar minerals, dolomite, lamellar minerals, authigenic pyrite, and titanite. In combination with AMS14 C dating and the sea level data in the west Pacific Ocean, we analyzed the provenance of the sediment. Results show that, during 17.3—0ka BP, the place of the core received primarily from Changjiang(Yangtze) river, and also some from along-coast current off Zhejiang Province.
Related Articles
No related articles found