@article{94b440276a63499a9a3fbc468b782a03,
title = "Possible South-Dipping Mesozoic Subduction at Southern Tethys Ocean-Constrained from Global Tectonic Reconstructions and Seismic Tomography",
abstract = "The evolution of the Tethys Ocean involved several episodes of ocean opening (including the Paleo-Tethys and Neo-Tethys) along its southern margin as terranes rifting away from eastern Gondwana. These oceans were terminated by well observed north-dipping subduction as the same terranes accreted to southern Eurasia. However, the presence of south-dipping subduction, though geologically proposed by numerous studies, have generally been omitted in the reconstruction of Tethyan evolution. Here, we synthesize the Mesozoic south-dipping subduction evolutions in the global reconstruction and focus on two potential events located along the northern edges of Southwest Borneo Block and the Woyla Arc. We next evaluate their slab volumes after thermal diffusion in the current mantle. Fast velocity anomalies in the mantle beneath the same region are then converted to cold anomalies and their volumes are further estimated and compared to the volumes evaluated from these two Mesozoic south-dipping subduction. We further identify seismic fast velocity anomalies likely relevant to slab remnants of south-dipping Tethyan subduction in the present-day mantle beneath the Indian ocean and West Australia, and link them to arc systems in plate reconstructions. In addition, one more tectonic scenario relevant to the north-dipping subduction in our study region is also examined. We speculate the relationship and evolution between such south-dipping subduction and north-dipping subduction in the south of Tethys Oceans. The attempt to reconstruct intermittent south-dipping subduction systems in southern Tethys region represents an effort on assessing rifting mechanisms in the opening of the Tethys Ocean and break-up of eastern Gondwana.",
keywords = "reconstruction, seismic prospecting, south-dipping subduction, Tethys",
author = "Peilong Yan and Nan Zhang and Huaiyu Yuan and Liang Qi and Xiaoxu Liu",
note = "Funding Information: This study was supported by the National Natural Science Foundation of China (Nos. 41888101, 41976066, 91955210). Constructive discussions with Zheng-Xiang Li, Aral I. Okay, and Bo Wan, and edits by Zheng-Xiang Li are greatly appreciated. Suggestions to an early version of the manuscript by Eldert Advokaat, Sabin Zahirovic, Andy Parsons, Thorsten W. Becker and Nathan A. Simmons, as well as reviews from two anonymous reviewers to this version greatly improved the quality of this work. Data processing was supported by resources provided by the High-performance Computing Platform of Peking University, the Western Australian Exploration Incentive Scheme (EIS), and resources provided by the Perth Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia. This is contribution from the ARC Centre of Excellence for Core to Crust Fluid Systems (http://www.ccfs.mq.edu.au). The seismic and global paleogeographic reconstruction data are available through French and Romanowicz (2014), Hosseini et al. (2018), Simmons et al. (2015) and Young et al. (2019). The processed seismic image data is available in the Mendeley repository (https://doi.org/10.17632/mtf4h8yjtw.2). The final publication is available at Springer via https://doi.org/10.1007/s12583-021-1466-3. Funding Information: This study was supported by the National Natural Science Foundation of China (Nos. 41888101, 41976066, 91955210). Constructive discussions with Zheng-Xiang Li, Aral I. Okay, and Bo Wan, and edits by Zheng-Xiang Li are greatly appreciated. Suggestions to an early version of the manuscript by Eldert Advokaat, Sabin Zahirovic, Andy Parsons, Thorsten W. Becker and Nathan A. Simmons, as well as reviews from two anonymous reviewers to this version greatly improved the quality of this work. Data processing was supported by resources provided by the High-performance Computing Platform of Peking University, the Western Australian Exploration Incentive Scheme (EIS), and resources provided by the Perth Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia. This is contribution from the ARC Centre of Excellence for Core to Crust Fluid Systems ( http://www.ccfs.mq.edu.au ). The seismic and global paleogeographic reconstruction data are available through French and Romanowicz (2014), Hosseini et al. (2018), Simmons et al. (2015) and Young et al. (2019). The processed seismic image data is available in the Mendeley repository ( https://doi.org/10.17632/mtf4h8yjtw.2 ). The final publication is available at Springer via https://doi.org/10.1007/s12583-021-1466-3 . Publisher Copyright: {\textcopyright} 2023, China University of Geosciences (Wuhan) and Springer-Verlag GmbH Germany, Part of Springer Nature.",
year = "2023",
month = feb,
doi = "10.1007/s12583-021-1466-3",
language = "English",
volume = "34",
pages = "260--279",
journal = "Journal of Earth Science",
issn = "1674-487X",
publisher = "China University of Geosciences",
number = "1",
}