Dispersal of the Zhujiang River(Pearl River) derived sediment in the Holocene

作     者：GE Qian LIU J.P. XUE Zuo CHU Fengyou 

作者机构：Key Laboratory of Submarine GeosciencesState Oceanic AdministrationSecond Institute of OceanographyState Oceanic Administration Department of MarineEarth and Atmospheric SciencesNorth Carolina State UniversityRaleighNC 27695USA 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2014年第33卷第8期

页      面：1-9页

核心收录：

学科分类：070704[理学-海洋地质] 070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 0707[理学-海洋科学] 

基　　金：The National Natural Science Foundation of China under contract Nos 41106045 and 41206045 the Scientific Research Fund of the Second Institute of Oceanography,SOA under contract No.JT1102 the Basic Research Fund of State Oceanic Administration(named as Pale-oceanographic Research in the Western Pacific) 

主　　题：South China Sea Zhujiang River mud clinoform 

摘      要：High-resolution Chirp profiling and coring reveals an elongated （ca. 400 km） Holocene Zhujiang River （Pearl River）-derived mud area （maximum thickness 〉 20 m） extending from the Zhujiang River Delta, southwest-ward off the Guangdong coast, to the Leizhou Peninsula. Two depo-centers, one proximal and one distal, are identified. On the continental shelf off the west Guangdong Province, the mud is deposited in water depth shallower than 50 m; while to the southeast of the Zhujiang River Estuary, the mud area can extend to the -120 m isobath. A combined analysis with the stratigraphic sequences of other muddy deposits in the West-ern Pacific marginal seas （mainly Changjiang （Yangtze） and Huanghe （Yellow） Rivers derived） indicates that the initiation of the Zhujiang River muddy deposit can be further divided into two stages： Stage 1 is before the mid-Holocene sea-level highstand （ca. 7.0 cal. ka BP）, the proximal mud was mostly deposited after 9.0 cal. ka BP, when the sea-level rose slowly after the Meltwater Pulse -1C; Stage 2, after the mid-Holocene sea-level highstand, clinoform developed on the continental shelf off the west Guangdong Province, extending ca. 400 km from the Zhujiang River Estuary. The proximal clinoform thins offshore, from ca. 10 m thickness around 5-10 m water depth to less than 1-2 m around 20-30 m water depth. In addition, we also find a de-veloped distal clinoform in the east of the Leizhou Peninsula.