Volume 91, Issue 3 pp. 971-987
Original Articles
Full Access

Characteristics of Meso-Cenozoic Igneous Complexes in the South Yellow Sea Basin, Lower Yangtze Craton of Eastern China and the Tectonic Setting

Yumao PANG

Yumao PANG

Institute of Oceanology, Chinese Academy Science, Qingdao 266071 Shandong, China

University of Chinese Academy of Sciences, Beijing 100049 China

Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071 Shandong, China

College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590 Shandong, China

Search for more papers by this author
Xunhua ZHANG

Corresponding Author

Xunhua ZHANG

Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071 Shandong, China

MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071 Shandong, China

Nanjing Center, China Geological Survey, Nanjing 210016 Jiangsu, China

Corresponding author. E-mail: [email protected]Search for more papers by this author
Guolin XIAO

Guolin XIAO

Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071 Shandong, China

MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071 Shandong, China

Search for more papers by this author
Xingwei GUO

Xingwei GUO

Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071 Shandong, China

MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071 Shandong, China

Search for more papers by this author
Zhenhe WEN

Zhenhe WEN

Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071 Shandong, China

MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071 Shandong, China

Search for more papers by this author
Zhiqiang WU

Zhiqiang WU

Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071 Shandong, China

MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071 Shandong, China

Search for more papers by this author
Xiaoqing ZHU

Xiaoqing ZHU

Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071 Shandong, China

MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071 Shandong, China

Search for more papers by this author
First published: 05 July 2017
Citations: 26

About the first author:

PANG Yumao male, born in 1987, is a PhD candidate from the Institute of Oceanology, Chinese Academy Science, majored in marine geology, tectonics and petroleum geology. E-mail: [email protected]

Abstract

The South Yellow Sea Basin is partially surrounded by the East Asian continental Meso-Cenozoic widespread igneous rocks belt. Magnetic anomaly and multi-channel seismic data both reveal the prevalent occurrence of igneous rocks. We preliminarily defined the coupling relation between magnetic anomalies and igneous rock bodies. Some igneous complexes were also recognized by using multi-channel seismic and drilling data. We identified various intrusive and extrusive igneous rock bodies, such as stocks, sills, dikes, laccoliths and volcanic edifice relics through seismic facies analysis. We also forecasted the distribution characteristics of igneous complexes. More than fifty hypabyssal intrusions and volcanic relics were delineated based on the interpretation of magnetic anomaly and dense intersecting multi-channel seismic data. It is an important supplement to regional geology and basin evolution research. Spatial matching relations between igneous rock belts and fractures document that extensional N–E and N–NE-trending deep fractures may be effective pathways for magma intrusion. These fractures formed under the influence of regional extension during the Meso-Cenozoic after the Indosinian movement. Isotopic ages and crosscutting relations between igneous rock bodies and the surrounding bedded sedimentary strata both indicate that igneous activities might have initiated during the Late Jurassic, peaked in the Early Cretaceous, gradually weakened in the Late Cretaceous, and continued until the Miocene. Combined with previous studies, it is considered that the Meso-Cenozoic igneous activities, especially the intensive igneous activity of the Early Cretaceous, are closely associated with the subduction of the Paleo-Pacific Plate.

 

    The full text of this article hosted at iucr.org is unavailable due to technical difficulties.