...Longyi Shao; Pengfei Zhang; R.A. Gayer; Jialiang Chen; Shifeng Dai Abstract Microfacies and sedimentological analyses of the Upper Permian coal-bearing Heshan Formation in the Heshan coalfield of central Guangxi suggest that these coal measures formed in a marine carbonate platform setting. Low...

...Fig. 8. Photomicrograph of several dark pyroclasts from bed 7b, basal Heshan Formation, Tieqiao. The grains were probably originally glassy although they contain tiny phenocrysts of plagioclase. The largest grain in the centre of the field of view shows a well-developed scoriaceous texture. Also...

... above the base of the calcimicrobial framestone. Similar to Heping section, the PTB event horizon, marked by loss of recognizable Permian macrofossils occurs slightly lower, at the top of the skeletal packstone of the Heshan Formation. See Fig. 2 for location ...

...Figure 7 — 1–5, Tongzithyris extensa ; 1–4, NIGP43810, ventral, dorsal, lateral, and anterior views, from the Changhsing Formation at Pingqiao, Zhijing, Guizhou Province, South China; 5, 93411, posterior view of an internal mold showing the ventral spondylium, from the Heshan Formation...

... Lopingian consists of the Heshan Formation. The G-L strata are subdivided into seven beds ( Fig. 1B ). Bed 1 is composed of siliceous mudstone with chert nodules, and beds 2–6 have been termed the Laibin Limestone. Beds 2–4 form the major part of a skeletal reef ( Fig. 1B ), which is capped by bioclastic...

... to the eastern part of the Jiaodong Peninsula at a high angle. This caused extensive magmatism, including intrusion of the Heshan pluton and Kuaijishan pluton, and volcanic eruptions that led to the formation of the Qingshan Group. HS—Heshan pluton; KJS—Kuaijishan pluton; LL—Linglong pluton; SC—Shichang pluton...

... (formations) indicated in the legend. GBG = Great Bank of Guizhou; DP = Debao platform; HS = Heshan platform; CPP = Chongzuo-Pingguo platform. Gray rectangles in Chongzuo and Pingguo areas indicate areas of detailed maps in Figures 6 and 8 , respectively. Subareas of the basin used for subsidence analysis...

... described from China. Actinocoelia Finks, 1960 , represented by the species A. ossa Deng, 1981 , was reported from the Late Permian Changhsing Formation from Heshan, Laibin County, Guangxi Province. The other documented Chinese chiastoclonellid sponge is Pseudovirgulopsis solus Deng, 1981 , which...

..., Yunkai, and Cathaysian lands) and the sedimentary deposits have been referred to several formations. Four of them, the Xuanwei, Lungtan, Wuchiaping, and Heshan formations, are representative ( Fig. 1.1 ). The Xuanwei Formation consists of sandstone, shale, and coal seams containing abundant plant fossils...

...-rich claystone at the base of the Heshan Formation in Pingguo, Guangxi, SW China: Constrained by U-Pb ages and trace element contents of detrital zircon Haonan Zhao, Kunyue Ling, Shengjiang Du, and Hanjie Wen article 105633 Geochemical evolution of the Doushantuo economic phosphorite in Central Guizhou...

... of length are shown by a box (with specimen number >2). The number beside the box indicates the number of conodont P 1 elements measured. U.P., Upper Permian; Ch., Changhsingian; B.Fm, Baifeng Formation; He. Fm., Heshan Formation; M.Tr., Middle Triassic. ...