Middle Permian Mixed Siliciclastic‐Carbonate System on the Northwestern Margin of the Indian Plate, Pakistan: Implications for Paleoclimate and Carbonate Platform Evolution

Abstract

The Permian is characterized by various events of global significance (Henderson et al., 2020). The tectonic rifting of Pangea, marked changes in terrestrial vegetation, ice-house to green-house transition, diversification of marine and terrestrial biota, tectonic-forced biome migration, replacement of the Palaeophytic by the Mesophytic flora, and the end-Permian mass extinction

Reconstruction of the Yangtze Ramp during Floian to Darriwilian (Ordovician) in South China: Its Morphology, Controlling Factors and Significances

“…Although the ramp setting of Yangtze region in South China have been previous discussed and accepted by numerous researchers (e.g., Liu, 2006;Zhou, 2015;Luan et al, 2017), the nature of mixed siliciclastic and carbonate sediments or mixed sediments is not well-studied. Mixed sediments are common in various ancient and modern depositional environments through geological history (Mount, 1984(Mount, , 1985Chiarella et al, 2017;Wadood et al, 2022), and reflect variations in terrigenous supply, hydrodynamic conditions, tectonic activities, platform morphology and/or diagenetic processes. Except for lithofacies, the mixing nature could much directly be revealed by elemental compositions of sediments, since argillaceous limestone can be considered as calcite diluted clastic rocks, and vice versa (Sano et al, 2013;LaGrange et al, 2020), collectively known as mixed sediments (sensu stricto, Mount, 1984).…”