|Table of Contents|

Sedimentary Evolution Characteristics of the Yangtze River at Yangzhong Section During the Last 50 000 Years(PDF)

《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2012年02期
Page:
108-112
Research Field:
地理学
Publishing date:

Info

Title:
Sedimentary Evolution Characteristics of the Yangtze River at Yangzhong Section During the Last 50 000 Years
Author(s):
Li Yanyan1Wang Jian1Cao Guangjie2
1.School of Geography Science,Nanjing Normal University,Nanjing 210046,China
Keywords:
Yangzhong sectionpalaeo-valleysedimentary sequencestratigraphic chronology
PACS:
P512.2
DOI:
-
Abstract:
The palaeo-valley of Yangtze River at Yangzhong section was constructed by 20 drillings. Based on analysis of lithology,sedimentary architecture,sediment size characteristics and magnetic susceptibility,together with 14C and ESR datings,Stratigraphic-chronological sequence are established since 50 ka. Above - 150 m,the deposition of the palaeovalley at about - 68 m,- 80 m and - 125 m respectively exited unconformities. It shows three different deposition-cycle characteristics,from the gravel sand-pebble,to coarse-medium sand,and to fine-silty sand.

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Last Update: 2013-03-11