scholarly journals Provenance Shift during the Plio-Pleistocene in the Vertex of Yangtze Delta and Its Geomorphological Implications

Minerals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 996
Author(s):  
Junjie Yu ◽  
Wei Yue ◽  
Ping Liu ◽  
Bo Peng ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Yangtze River ◽  
River Channel ◽  
Heavy Minerals ◽  
Tectonic Subsidence ◽  
Zircon Geochronology ◽  
The Yangtze River ◽  
Yangtze Delta ◽  
The South ◽  
Source To Sink ◽  
Regional Tectonic

One of the key issues of the Source-to-Sink process is revealing the geomorphological evolutions of large rivers from the perspective of river sink areas. This study aims to reveal the provenance change near the vertex of the Yangtze delta during the late Cenozoic and provide insight into the Yangtze channelization into the sea due to regional tectonic subsidence. Heavy minerals and zircon geochronology in the Plio-Pleistocene sediments of the vertex of the modern Yangtze delta (core RGK15) reveal that a significant provenance shift occurred at ~2.6 Ma (the beginning of the Pleistocene). During the Pliocene, ultra-stable heavy minerals and pre-Mesozoic zircon grains predominated in the sediments, probably derived from contemporary outcrops of sedimentary rock that were widely distributed in the delta and its surrounding area. They are completely different from those in the Pliocene sediments of the south delta, indicating that decentralized, local, small watersheds dominated the Yangtze delta during the Pliocene. This resulted from the relatively elevated terrain of this region due to the adjacent ancient Zhejiang–Fujian Uplift (ZFU) at that time. However, diversified heavy minerals and zircon geochronology similar to those of the modern upper Yangtze fingerprints occur in the Pleistocene sediments of core RGK15, implying that a significant provenance shift to the Yangtze River occurred here at ~2.6 Ma. The provenance shift recorded by the cores in the south delta mainly occurred at ~1.2 Ma, indicating that the Yangtze River channel was dragged southward with the further subsidence of the ancient Zhejiang–Fujian Uplift. This study reveals the southward migration process of the Yangtze River channel with the regional tectonic subsidence from the perspective of provenance evolution, which contributes to an understanding of when the Yangtze River channelized into the sea.

Identification of Yangtze River and Yellow River Paleochannels in South Yellow Sea Shelf

2013 ◽  
Vol 664 ◽  
pp. 27-31
Author(s):  
Zhao Jun Song ◽  
Jin Zhou ◽  
Qiao Chen ◽  
Zhen Kui Gu
Keyword(s):  
Continental Shelf ◽  
Yellow Sea ◽  
Yangtze River ◽  
Yellow River ◽  
River Sediments ◽  
The Yangtze River ◽  
South Yellow Sea ◽  
The South ◽  
Research Results ◽  
The South Yellow Sea

research of submarine paleochannels has not only a great significance in exploring the evolution of palaeoenvironment of continental shelf but also a practical application value in solving problems on disaster geology and environmental geology in the continental shelf development. Yellow River and Yangtze River both were concentrated in the northern Jiangsu to enter the South Yellow Sea Basin in the Last Glacial, playing an important role in the palaeoenvironment evolution of the South Yellow Sea. On the basis of integrating previous research results and researching a large number of shallow stratigraphic sections of paleochannels in the South Yellow Sea Shelf in detail, identification and research of Yangtze River and Yellow River paleochannels in the South Yellow Sea Shelf are carried out in this paper. Research results show that: the Yangtze River and Yellow River paleochannels in the South Yellow Sea continental shelf are significantly different in the river section, river pattern, major elements, as well as trace elements, clay minerals, carbonate content and heavy mineral assemblages in the river sediments and other aspects. These differences can be used as the evidence for identification of the Yangtze River and Yellow River paleochannels.

On the Construction Technology about Ancient Pagoda Foundations of China

2012 ◽  
Vol 174-177 ◽  
pp. 1949-1952
Author(s):  
He Qun Li ◽  
Fang Zhang ◽  
Pei Pei Duan
Keyword(s):  
Yangtze River ◽  
Construction Technology ◽  
The Yangtze River ◽  
The South ◽  
Rock Foundations ◽  
Soil Zone

Foundations are vital of constructing pagoda. First dig the foundations, and then tram trinity mixture fills one layer after layer. In order to reinforce foundations, wooden pillars and brocken stones are used, especially in softer soil zone. In addition, there is a minority of rock foundations, mainly in the south of the Yangtze River of China. Many ancient pagodas stand up to now closely related to solid foundations.

Chinese Communist Treatment of the Origins and the Foundation of the Chinese Empire

1965 ◽  
Vol 23 ◽  
pp. 78-105 ◽  
Author(s):  
A. F. P. Hulsewé
Keyword(s):  
Yangtze River ◽  
Fourth Century ◽  
Fifth Century ◽  
The Yangtze River ◽  
The South ◽  
The West ◽  
Warring States ◽  
North East ◽  
The North ◽  
Chinese Empire

In antiquity, China was far from being the China we know today, neither in extent, nor in political and social organisation. To the south it did not extend beyond the Yangtze River, to the north it stopped short of the Mongolian steppe, to the north-east, only a small part of the south Manchurian plain was included, whereas in the west it merely went up to the easternmost part of what is now Kansu Province; the Szechwan plain was only included at the end of the fourth century B.C. Politically, the King of Chou was theoretically the overlord of most of this area, but in actual practice, independent rulers reigned over a congeries of larger and smaller states. As a result of wars of conquest, seven large states had come to be formed by the middle of the fifth century B.C. and these were engaged in a ceaseless struggle for supremacy. The time between the middle of the fifth century and 221 B.C., when the western state of Ch'in finally conquered all its rivals, is known as the period of the Warring States.

scholarly journals The Inheritance of Island Yi and the Acculturation of Maritime Fan in the Han People on Southeast Coast of China

2021 ◽  
pp. 119-141
Author(s):  
Chunming Wu
Keyword(s):  
Ethnic Groups ◽  
Yangtze River ◽  
Southern China ◽  
The Yangtze River ◽  
The South ◽  
Coastal Regions ◽  
Cultural Character ◽  
Southeast Coast ◽  
Cultural Orientations ◽  
Maritime Region

AbstractThe Han people of southern China living in the coastal regions lying to the south of the lower reaches of the Yangtze River show a series of distinctive essences of physique, language or dialect, lifestyle and economic pattern, religion and worship of supernatural spirits, cultural orientations to the oceans and maritime character and so on. The maritime orientation of “living on boats as home, depending on sea as lifestyle, trading with Maritime Fan (诸番) ” was the most prominent characters of the Han people in south of China, especially in the southeast coast in Zhejiang, Fujian, and Guangdong. The accumulation and assimilation of the prehistoric and early indigenous Bai Yue (百越), Island Yi (岛夷) and proto-Austronesian of the Maritime Region of Southeastern Asia, as well as the immigration and acculturation of the overseas ethnic groups of foreign Maritime Fan since the medieval ages, were the two main sources of the formation and development of the unique maritime cultural character of the Han people in southeast coast of China.

Sign in / Sign up

Export Citation Format

Share Document