New Progress in the study of late Paleoproterozoic magmatism and tectonic setting in the Cathaysia Block
Recently, new progress in the study of late Paleoproterozoic magmatism and tectonic setting in the Cathaysia Block has been made by Dr. Aimei ZHANG, scientist of Laboratory of Coastal and Marine Geology. The research achievement was published in Precambrian Research Journal (IF:4.427) titled “Identification of two-phased late Paleoproterozoic magmatism in the Wuyishan Domain (SE China): Implications for the tectonic evolution of the Cathaysia Block”.
Reconstruction of the Nuna (also known as Columbia) supercontinent is one of the most important focuses of geoscience research. In particularly, geoscience information about the late Paleoproterozoic era (1.9–1.7 Ga) plays an important role in reconstructing Nuna. Late Paleoproterozoic magmatic records have mainly been reported in the Wuyishan Domain of the Cathaysia Block. Although some previous studies focused on the Paleoproterozoic meta-igneous and metasedimentary rocks within the Wuyishan Domain, its tectonic nature remains controversial. In order to resolve the potential tectonic nature in the Wuyishan Domain, this study carried out detailed field geological investigations, systematic sampling, petrographical observation, combining with whole rock elements, zircon U-Pb dating and Sr-Nd-Hf isotopic analyses.
Comprehensive zircon U-Pb geochronological, elemental and Sr-Nd-Hf isotopic data for late Paleoproterozoic granitic rocks in the Wuyishan Domain of the Cathaysia Block (SE China) indicate the following:
(1) Two-phased late Paleoproterozoic A- and S-type granitoids were identified and dated at 1925–1848 and 1816–1750 Ma in the Wuyishan Domain.
(2) These late Paleoproterozoic granitoids in the Wuyishan Domain were derived in a continental arc/back-arc setting and the two-phased arc/back-arc magmatism was related to the assembly of the Paleoproterozoic Nuna supercontinent.
(3) The Cathaysia Block was located close to northern India in the Nuna supercontinent during Proterozoic time until the breakup of Rodinia in the late Neoproterozoic.
Fig. 1 Time-space plot of Paleoproterozoic events within the Cathaysia Block, northern Indian Shield and North Australia Craton
Fig.2 Proposed paleogeography of the Cathaysia Block in the Nuna supercontinent
This research was jointly funded by the Scientific Research Foundation of Third Institute of Oceanography, MNR and the National Natural Science Foundation of China.
Article link: https://doi.org/10.1016/j.precamres.2021.106093
China’s First Blue Carbon Trade Project
Zhanjiang Mangrove Afforestation Project (VCS Registered ID 2343) has been success...
Ocean and Coastal Carbon Sink Workshop successfully held in Xiamen04/17/2021
TIO participated in the 16th APEC Ocean and Fisheries Working Group Meeting03/09/2021
TIO beach restoration research team won the 1st prize of Fujian Provincial Science and Techn...12/31/2020
2020 APEC Marine Spatial Planning Training Workshop held successfully in Xiamen11/25/2020
New Research Progress in the Phylogeography of the Indo-Pacific Humpback Dolphin03/04/2021
New Progress in the study of late Paleoproterozoic magmatism and tectonic setting in the Cathaysia Block01/29/2021
Series advances made by Key Laboratory of Global Change and Marine-Atmospheric Chemistry (GC-MAC)12/31/2020
New Progress in the Research of Exploring Blue Carbon Plants to Effectively Reflect the Carbon Capture and Storage Capacity of Marine Ecosystem12/09/2020
Gratifying progress in the application of “Research and Development of Working Tubes for the Oxidation of Tritium in Marine Organisms”11/27/2020
The Research Progress of Nanobody in The Application of Red Light-Switchable Protein Dimerization Systems11/24/2020