...Table 1 —Brachiopod species from the upper part of the Douling Formation in five localities of southern Hunan. YS-Yansha, YH-Yanhu, XYC-Xiaoyuanchong, SH-Sanhe, YJW-Yejiwo. *-newcomers and very common species in the Lopingian in South China; #-common species in the Late Guadalupian in South China...

... Province, an earliest Wuchiapingian brachiopod fauna was reported from the upper part of Douling Formation (which contains mainly calcareous mudstone interbedded with thin-bedded bioclastic limestone, deposited in the continental shelf sedimentary environment; see Shen and Zhang, 2008 for details...

..., and those of the upper Nantuo Formation yield four peaks at 2.50 Ga, 2.05 Ga, 0.85 Ga, and 0.65 Ga. The Archean and Paleoproterozoic (1.80–2.10 Ga) zircons have ε Hf (t) values of −16.3 to +4.7 and −23.0 to +4.2, and may be sourced from the Kongling and Douling complexes and Paleoproterozoic intrusions...

... and surface processes of the Earth as well as the formation of major mineral resources ( Santosh, 2010 ; Nance et al., 2014 ; Cawood et al., 2016 ; Zhang et al., 2018b ; Li et al., 2021 ; Santosh and Groves, 2022 ). The breakup of supercontinent Rodinia, driven by mantle plumes or retreating oceanic...

... of detrital zircons from sandstones in the southeastern part of the Yangtze Domain. U–Pb ages of the youngest detrital zircon grains from the Niuguping, Gucheng and Datangpo formations yielded average ages of 712±24 Ma, 679.2±6.2 Ma and 665.1±7.4 Ma, respectively, which are close to the depositional ages...

... geological map of the northern Suizao terrane, showing the sampling locations (modified after Li, 2018 ). NC – North China Craton; YZ – Yangtze block; CA – Cathaysia block. The basement of the SQB, represented by the Yudongzi Group and the Douling complex, is a suite of Neoarchaean medium- to high...

... margin of the YZB (e.g. He et al. 1995 , 1996 ; Xiao et al. 1997 ), although there have been few systematic studies of these rocks. The Huodiya Group, which is widely distributed on the northern margin of the YZB, is a medium-grade metamorphic formation that exhibits a wide range of meta-igneous...

... and dolomite of the Carboniferous, limestone of the Lower Permian Qixia Formation, muddy limestone and argillaceous shale of the Lower Permian Dangchong Formation, shale and siltstone of the Upper Permian Douling Formation, limestone with marl and shale layers of the Lower Triassic, and the sandstone-shale...

... Province (B of Fig. 1, D of Fig. 2 ), includes the upper part of the coal-bearing deposits of the Douling Formation, silicalite and siliceous mudstone of the overlying Talung Formation, and by grey thick-bedded massive limestone of the Changhsing Formation. The uppermost part of the Douling Formation...

...Rong-Lin Ma; Wei Terry Chen; Yan-Wen Tang Abstract Although carbonatite-alkaline complexes are the primary source of the world’s niobium (Nb) supply, the mineralization style is largely variable in these complexes and the processes behind their formation are still poorly understood. Exemplifying...

... Upper Neoproterozoic (Sinian) samples are fine-grained meta-sandstones and phyllites, and two samples were collected from the Hujiazhai Formation for this study ( Fig. 3A ), which is overlain by carbonate-dominated sequence. This formation commonly dips to the NW and SE at low to moderate angles...

...Hanyu Huang; Dengfa He; Di Li; Yingqiang Li Abstract The tectonic setting of the southwestern Sichuan foreland basin, China, changed rapidly during the Paleogene period, and records from this period may provide crucial information about the formation and tectonic processes that affected the Sichuan...

... discovery in the Tunisian waters. Although no details have been disclosed, the pay is very probably the carbonate lower Eocene Metlaoui Formation. A significant gas discovery was made in the Mediterranean in the offshore part of the Nile delta where large reserves of gas were discovered in Miocene sands...

...). In general, the loss of Pb from zircon commonly occurs in the high-grade metamorphic rocks; thus, the upper intercept age is considered to represent the formation age of the protolith ( Mezger and Krogstad, 1997 ; Pidgeon et al., 1998 ; Hoskin and Black, 2000 ; Gerdes and Zeh, 2009 ). The zircons from...

... in sedimentary rocks and/or xenocrystic zircons brought to the surface from the deep crust have provided important clues for insights into the early Precambrian crustal formation and evolutionary history of the SCC, and confirmed widespread Archaean basement beneath the SCC (Zheng et al . 2006 , 2011 ; Yu et...

... petroleum wells (Douled Oil field and Semmama Oil field) and analyzed to determine correlations between seismic reflection horizons. The electrical investigation was carried out by Mining Petroleum Services Company. It aims to assess and analyze resistivities distribution in Miocene sandstone formations...

... different parts of the SCB, a more precise position and configuration of the SCB within Gondwana is obtained. Archaean–Palaeoproterozoic crystalline basement of the Yangtze Block is sporadically exposed and is represented by the Douling Complex, which has yielded ages of ~2.5 Ga (Hu et al . 2013...

... = Qinling complex, 4 = Danfeng Group, 5 = Wuguan and Maoping Group, 6 = Liuling Group, 7 = Tongbai complex, 8 = Douling complex, 9 = Fuping Group (modified from Meng and Zhang [ 2000 ]). Dating method of the ages: U = U  −  Pb , S m = Sm-Nd , R b = Rb − Sr...