Resolving the Tectonic Setting of South China in the Late Paleozoic

Abstract

The late Paleozoic was a dynamic and crucial time in the evolution of the Earth system. It is characterized by the assembly of supercontinent Pangea (Metcalfe, 2013;Stampfli et al., 2013), superplume activities embodied by the Skagerrak-Centered large igneous province (LIP),

Closing of the east Palaeo‐Tethys Ocean: Source–sink records from Middle Triassic sediments, Hainan Island, China

“…Distribution map of igneous rocks in Hainan Island (The blue frame shows the igneous rocks in the post‐collision extensional tectonic setting, data from Chen, 2020; Chen et al, 2011; Chen, Wang, et al, 2013; Chen, Lin, et al, 2013; Dilek & Tang, 2020; Ding et al, 2005; Du, 2022; Gao, Chen, et al, 2022; Gao, Shi, et al, 2022; Gou et al, 2019; He et al, 2016; He, Wang, Xin, & Zhang, 2018; Hu et al, 2022; Li et al, 2013; Liu, 2016; Liu, Hu, et al, 2022; Long et al, 2022; Tang, 2010; Wen et al, 2013; Xie et al, 2005; Yuan et al, 2019; Zhao et al, 2020). …”

“…For example, the 248 ± 1 Ma diorite porphyrite vein in the Shilu area (Li et al, 2013) and the 247.4-252 Ma shoshonitic intrusive rocks in Bawangling (Liu, 2016) were formed in the post-orogenic extensional setting. The detrital zircons from this period have F I G U R E 1 1 Distribution map of igneous rocks in Hainan Island (The blue frame shows the igneous rocks in the post-collision extensional tectonic setting, data from Chen, 2020; Chen et al, 2011;Chen, Lin, et al, 2013;Dilek & Tang, 2020;Ding et al, 2005;Du, 2022;Gao, Chen, et al, 2022;Gao, Shi, et al, 2022;Gou et al, 2019;He et al, 2016;He, Wang, Xin, & Zhang, 2018;Hu et al, 2022;Li et al, 2013;Liu, 2016;Liu, Hu, et al, 2022;Long et al, 2022;Tang, 2010;Wen et al, 2013;Xie et al, 2005;Yuan et al, 2019;.…”

“…Considering that the genesis of detrital zircons is mainly controlled by continental crust, it can be inferred that the 235-259 Ma detrital zircons in the Lingwen Formation samples recorded an environment of collisional orogeny and post-collision (extensional) extension. Recently, the use of detrital zircon test data in empirical formulas has been widely recognized by the academic community (Gao, Chen, et al, 2022;Tang et al, 2020Tang et al, , 2021 13). The empirical equation used to calculate the crustal thickness is as follows:…”

Nature of the Paleo‐Pacific Subduction Along the East Asian Continental Margin in the Mesozoic: Insights From the Sedimentary Record of West Sarawak, Borneo

“…For the North China Craton, westward subduction of the Paleo‐Pacific plate is inferred to have commenced at least in the Early Jurassic (Wu et al., 2019; Zhu & Xu, 2019). For South China, the earliest record of subduction of the Paleo‐Pacific plate can be traced back to 500 Ma (Gao et al., 2022; Isozaki et al., 2010; Pastor‐Galán et al., 2021), whereas Li and Li (2007) proposed that subduction started in the Permian. In contrast, other researchers suggested that subduction did not commence until the Triassic (Zhu et al., 2013), Early Jurassic (Xu et al., 2017).…”

Genetic Relationship between Granite and Fluorite Mineralization in the Shuanghuajiang Fluorite Deposit, Northern Guangxi, South China: Evidence from Geochronology, REE, and Fluid Geochemistry

“…Much attention has been paid to fluorite in recent years, and countries and organizations such as China, the United States, Australia, and the European Union, classify it as a strategic and critical mineral [4][5][6]. South China is tectonically formed by the amalgamation of the Yangtze Block and Cathaysia Block [7,8] (Figure 1a) and is rich in fluorite resources, accounting for more than 80% of the total known fluorite reserve in China [9]. Fluorite deposits in South China can be classified into three major types: (1) hydrothermal fluid filling type;…”