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Shuijingtuo Formation

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Journal Article
Published: 01 March 2014
Journal of Paleontology (2014) 88 (2): 385–394.
... embryos, along with sponge spicules, hyolithelminths, and linguliformean brachiopods, from the upper Shuijingtuo Formation limestone (Cambrian Stage 3) at Changyang, Hubei Province, South China. This limestone unit has carbonate carbon and oxygen isotopic compositions similar to the upper Shuijingtuo...
FIGURES | View All (5)
Journal Article
Published: 01 July 2012
Journal of Paleontology (2012) 86 (4): 646–651.
...Tao Dai; Xingliang Zhang A bstract A number of immature and mature exoskeletons allow the first detailed description of the ontogeny of the early Cambrian redlichiid trilobite Metaredlichia cylindrica, from black shale of the Shuijingtuo Formation in Hubei Province, South China. The material...
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Geological map and stratigraphic column. 1, geological map of the Yangtze Gorges and surrounding region, showing the fossil locality (arrow) at Wangzishi in Hubei Province, modified from Jiang et al. (2012); 2, stratigraphic column of the Shuijingtuo Formation at Wangzishi, with chemostratigraphic profiles and fossil occurrences. Abbreviations: m=micritic limestone; w=wackestone; p=packstone; g=grainstone; DY=Dengying Formation; SP=Shipai Formation.
Published: 01 March 2014
Figure 1 Geological map and stratigraphic column. 1 , geological map of the Yangtze Gorges and surrounding region, showing the fossil locality (arrow) at Wangzishi in Hubei Province, modified from Jiang et al. (2012 ); 2 , stratigraphic column of the Shuijingtuo Formation at Wangzishi
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Artist reconstructions of Duplapex anima gen. et. sp. nov. (a) The new Tuzoiidae from the Shuijingtuo Formation (Cambrian Stage 3), Hubei, China. Carapace covering soft body, folded dorsally, with reticulate ornamentation. Valve bent inwards, forming two layers. Doublure wide, with large doublure spines. A pair of compound eyes with fleshy annulated eye stalks. (b) Front view of D. anima.
Published: 06 July 2021
Fig. 5. Artist reconstructions of Duplapex anima gen. et. sp. nov. ( a ) The new Tuzoiidae from the Shuijingtuo Formation (Cambrian Stage 3), Hubei, China. Carapace covering soft body, folded dorsally, with reticulate ornamentation. Valve bent inwards, forming two layers. Doublure wide
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Locality map of the Qingjiang biota and stratigraphy of the Shuijingtuo Formation in the Jinyangkou Section (modified from Fu et al. 2019, p. 1339, fig. 1). (a) Major fossil Lagerstätten similar to the Cambrian Burgess Shale in southern China. Tuzoia has been found in all these biotas, except the Chengjiang biota. (b) Geological map of the study area and distribution of Cambrian strata in the Jinyangkou Section. (c) Stratigraphic column of the Jinyangkou Section.
Published: 06 July 2021
Fig. 1. Locality map of the Qingjiang biota and stratigraphy of the Shuijingtuo Formation in the Jinyangkou Section (modified from Fu et al. 2019 , p. 1339, fig. 1). ( a ) Major fossil Lagerstätten similar to the Cambrian Burgess Shale in southern China. Tuzoia has been found in all
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Duplapex anima gen. et. sp. nov. from the Jinyangkou Section, Shuijingtuo Formation (Cambrian Stage 3), Changyang County, Hubei Province, China. (a) Specimen JY0738A, two valves fragmented, preserved in ‘butterfly’ orientation, with a wide doublure and an annulated left eye stalk protruding anteriorly. (b) Explanatory drawing; abbreviations as in Fig. 2. (c) Enlargement of the doublure and doublure spine. (d, e) Other materials of D. anima sp. nov. (specimens JY1132 and JY1228).
Published: 06 July 2021
Fig. 4. Duplapex anima gen. et. sp. nov. from the Jinyangkou Section, Shuijingtuo Formation (Cambrian Stage 3), Changyang County, Hubei Province, China. ( a ) Specimen JY0738A, two valves fragmented, preserved in ‘butterfly’ orientation, with a wide doublure and an annulated left eye stalk
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Duplapex anima gen. et. sp. nov. from the Jinyangkou Section, Shuijingtuo Formation (Cambrian Stage 3), Changyang County, Hubei Province, China. Specimen JY0748A, holotype. (a) Two valves, folded dorsally, bent inwards at the ventral margin, formed outside and inside layers (doublure), with reticulate ornamentation. (b) Explanatory drawing; abbreviations as in Fig. 2. (c) Enlargement of the small marginal spine, reticulate ornamentation, doublure spine and doublure. (d) Enlargement of the fleshy and annulated right eye stalk protruding from the anterior notch.
Published: 06 July 2021
Fig. 3. Duplapex anima gen. et. sp. nov. from the Jinyangkou Section, Shuijingtuo Formation (Cambrian Stage 3), Changyang County, Hubei Province, China. Specimen JY0748A, holotype. ( a ) Two valves, folded dorsally, bent inwards at the ventral margin, formed outside and inside layers (doublure
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Geological map and stratigraphic column. (A) Generalized geological map of Yangtze Gorges area, China, showing distribution of Ediacaran strata and fossil location at Wuhe (star). Inset map shows major tectonic units (Yangtze, Cathaysia, North China, and Tarim cratons) and Yangtze Gorges area (rectangle). (B) Stratigraphic column of Ediacaran Doushantuo and Dengying Formations, showing stratigraphic range of fossils. Stars mark stratigraphic horizons of Yichnus levis. Mbr—Member; Fm—Formation; HMJ—Hamajing Member; SSF—small shelly fossil; Cry.—Cryogenian; Cam.—Cambrian. Zircon U-Pb ages in Shuijingtuo Formation are from Okada et al. (2014), and those in Doushantuo Formation are from Condon et al. (2005).
Published: 23 September 2019
-Pb ages in Shuijingtuo Formation are from Okada et al. (2014) , and those in Doushantuo Formation are from Condon et al. (2005) .
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(1) Geological map of the Wuhe section in the Yangtze Gorges area with location of the Wuhe quarry (marked with a red star) and the Huangling anticline in the Yangtze Gorges area. Inset map shows the location of the Huangling anticline (red star) and major tectonic terranes in China. (2) Generalized stratigraphic column of the Ediacaran succession in the Yangtze Gorges area, South China, showing stratigraphic distribution of fossils and U–Pb radiometric ages. Star marks the stratigraphic occurrence of Charnia in the Shibantan limestone. Modified from S. Xiao et al. (2020) and Wu et al. (2021). Geochronometric data sources: Condon et al. (2005) and Yang et al. (2021) for the lower Doushantuo Formation and Miaohe Member; Huang et al. (2020) and Zhang et al. (2022) for the Baimatuo Member; Okada et al. (2014) for the Cambrian Shuijingtuo Formation. Cry. = Cryogenian; Fm. = Formation; Mbr. = Member; Cam. = Cambrian.
Published: 01 March 2024
) and Wu et al. ( 2021 ). Geochronometric data sources: Condon et al. ( 2005 ) and Yang et al. ( 2021 ) for the lower Doushantuo Formation and Miaohe Member; Huang et al. ( 2020 ) and Zhang et al. ( 2022 ) for the Baimatuo Member; Okada et al. ( 2014 ) for the Cambrian Shuijingtuo Formation. Cry
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SEM micrographs of sponge spicules, hyolithelminths, and linguliformean brachiopods that co-occur with embryo fossils in the upper Shuijingtuo Formation. 1, triaxonal hexactinellid sponge spicule, sample 11-WZS-0.6; 2, hexactinellid sponge spicule similar to Taraxaculum Bengtson inBengtson et al. (1990), 11-WZS-0.8; 3, mold of siliceous sponge spicules replaced with calcite that was dissolved in acetic maceration, 11-WZS-0.6; 4, hyolithelminth, probably Hyolithellus, 11-WZS-0.8; 5, 6, Linguliformean brachiopod Palaeobolus liantuoensis, both 11-WZS-0.6; 7, 8, Linguliformean brachiopod Eohadrotreta zhenbaensis, both 11-WZS-0.6. Scale bars=200 μm.
Published: 01 March 2014
Figure 2 SEM micrographs of sponge spicules, hyolithelminths, and linguliformean brachiopods that co-occur with embryo fossils in the upper Shuijingtuo Formation. 1 , triaxonal hexactinellid sponge spicule, sample 11-WZS-0.6; 2 , hexactinellid sponge spicule similar to Taraxaculum Bengtson
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Geological map and stratigraphic column. (a) Simplified geological map of the Huangling anticline, showing the location of Wuhe (white star) in the Yangtse Gorges area where the Shibantan Lagerstätte is excavated. Inset map shows major tectonic units of China and location of the Huangling anticline (red rectangle). (b) Stratigraphic column of the Ediacaran Doushantuo and Dengying formations in the Yangtse Gorges area, showing approximate fossil distributions, radiometric ages and the stratigraphic occurrence of the Shibantan Lagerstätte. Radiometric ages from the Doushantuo Formation (including the Miaohe Member), Baimatuo Member and Shuijingtuo Formation are from Condon et al. (2005), Huang et al. (2020) and Okada et al. (2014), respectively. The alternative correlations of the Miaohe Member with Member IV of the Doushantuo Formation (Xiao et al. 2017; Zhou et al. 2017) or with the basal Shibantan Member of the Dengying Formation (An et al. 2015) are marked by dashed arrows. SSFs, small shelly fossils.
Published: 12 October 2020
Formation (including the Miaohe Member), Baimatuo Member and Shuijingtuo Formation are from Condon et al. (2005) , Huang et al. (2020) and Okada et al. (2014) , respectively. The alternative correlations of the Miaohe Member with Member IV of the Doushantuo Formation ( Xiao et al. 2017 ; Zhou
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Stratigraphic column of the Yinchangpo section in the eastern Yunnan Province and its lithostratigrahic correlation to the Ediacaran–Cambrian transition successions in eastern Yunnan Province (Zhu, Zhang & Yang, 2007; Li et al. 2013a), southern Shaanxi Province (Zhu, Zhang & Yang, 2007) and Yangtze Gorges area (Condon et al. 2005; Jiang et al. 2007; Lu et al. 2013; Zhu et al. 2013; An et al. 2015). The biostratigraphy is based on Tang et al. (2006), Hua, Chen & Yuan (2007), Zhu (2010), Chen et al. (2013, 2014) and Zhang, Hua & Zhang (2015). The dotted lines represent the lithostratigraphic boundaries. KY – Kunyang Group; NT – Nantuo Formation; ZJQ – Zhujiaqing Formation; KCP – Kuanchuanpu Formation; YJH – Yanjiahe Formation; SJT – Shuijingtuo Formation; JC – Jiucheng Member; DB – Daibu Member; GJS – Gaojiashan Member; Fm – formation; Mb – member.
Published: 13 December 2016
& Zhang ( 2015 ). The dotted lines represent the lithostratigraphic boundaries. KY – Kunyang Group; NT – Nantuo Formation; ZJQ – Zhujiaqing Formation; KCP – Kuanchuanpu Formation; YJH – Yanjiahe Formation; SJT – Shuijingtuo Formation; JC – Jiucheng Member; DB – Daibu Member; GJS – Gaojiashan Member; Fm
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Comparison of the acrotretoid secondary shell layer from different depositional environments. (1) Internal view of ventral valves (ELI QJP-SP-205-1); (2, 3) close-up view of (1); (4) close-up view of columnar structure, note the hollow tube (marked by arrow); (5) the thin solid columns that connected the laminae; (6, 7) latex casts of (2, 3) showing the secondary columnar structure of an acrotretoid from the Shipai Formation (siliciclastic deposits); (8, 9) secondary columnar structure of an acrotretoid from the Shuijingtuo Formation (carbonate deposits) showing the columns (marked by arrow) with central canals (marked by double arrows) (ELI BE-AJH 201502-013, ELI BE-AJH 201502-014). Scale bars = 500 μm (1), 100 μm (2), 20 μm (3, 4, 6, 7, 9), or 10 μm (5, 8).
Published: 01 May 2021
solid columns that connected the laminae; ( 6, 7 ) latex casts of ( 2, 3 ) showing the secondary columnar structure of an acrotretoid from the Shipai Formation (siliciclastic deposits); ( 8, 9 ) secondary columnar structure of an acrotretoid from the Shuijingtuo Formation (carbonate deposits) showing
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Chemostratigraphic δ13Ccarb (‰, VPDB) and δ18Ocarb (‰, VPDB) profiles of multiple terminal Ediacaran sections in South China. Data sources: (a) Gaojiashan section (this study); (b) Shipai section (Jiang et al.2007); (c) Jiulongwan section (Wang et al.2014b); (d) Lianghekou section (Chen et al.2015); (e) Lianghong section (Wang et al.2012); (f) Huajipo section (Zhang et al.2004). Source of the lowest 87Sr/86Sr values (0.7084): Gaojiashan section (this study) and Shipai section (Jiang et al.2007). Abbreviations: AD – Algal Dolomite Member; Cam – Cambrian; ε – Cambrian; Cryog. – Crogenian Period; E – Ediacaran; G – Guojiaba Formation; GJS – Gaojiashan Member; HMJ – Hamajing Member; K – Kuanchuanpu Formation; LGL – Lieguliu Formation; MDP – Maidiping Formation; SJT – Shuijingtuo Formation; Shuram Ex – Shuram Excursion; XHP – Xihaoping Member; YJH – Yanjiahe Formation.
Published: 17 June 2019
– Cambrian; ε – Cambrian; Cryog. – Crogenian Period; E – Ediacaran; G – Guojiaba Formation; GJS – Gaojiashan Member; HMJ – Hamajing Member; K – Kuanchuanpu Formation; LGL – Lieguliu Formation; MDP – Maidiping Formation; SJT – Shuijingtuo Formation; Shuram Ex – Shuram Excursion; XHP – Xihaoping Member; YJH
Journal Article
Published: 18 January 2024
Geological Magazine (2023) 160 (10): 1932–1945.
... in the Shuijingtuo Formation. The δ 15 N values increase upward from high values of approximately 3.3‰ in the uppermost Dengying Formation to a low value of 0.3‰ in the middle part of the Shuijingtuo Formation; then, the values increase to 4.0‰ over the next 2 m before decreasing monotonically to −1‰ in the upper...
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Published: 01 May 2021
Wawrmast Formation Morocco Streng, 1999 Almohadella braunae range 2–3 middle Cambrian Jbel Wawrmast Formation Morocco Streng, 1999 Eohadrotreta zhenbaensis average 2.5 lower Cambrian Shuijingtuo Formation South China Z.L. Zhang et al., 2016 Lingulida: Linguellotreta sp
Journal Article
Published: 29 December 2016
Geological Magazine (2017) 154 (6): 1360–1370.
...) is sited west of Yichang city in central Hubei Province. Palaeogeographically, this area represented outer-shelf facies during the early Cambrian Period (Zhu et al . 2003 ). The section consists of the Yanjiahe and Shuijingtuo formations ( Fig. 1 c). The Yanjiahe Formation, which disconformably overlies...
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SEM images of acrotretoid Linnarssonia sapushanensis n. sp. from the Wulongqing Formation (Series 2, Stage 4) at Sapushan and Shijiangjun sections of Yunnan Province, and comparison to Eohadrotreta zhenbaensis Li and Holmer, 2004 from the Shuijingtuo Formation of Hubei Province (from Zhang et al., 2016). (1–7) Linnarssonia sapushanensis n. sp.; (1) ventral valve (ELI CLP-165-27); (2) dorsal valve (ELI CLP-182-22); (3) ventral valve (ELI SJJ-119-8); (4) close-up view of the white frame of (1), showing the pedicle tube preserved as a cylindrical projection with muddy infilling; (5) an enlargement of the white frame of (3); (6) columnar structure (ELI CLP-075-2); (7) close-up view of (5), showing hollow columns. (8, 9) Eohadrotreta zhenbaensis; (8) columnar structure (ELI AJH-201502-012); (9) close-up view showing hollow columns (ELI AJH-2015-2-14). Scale bars = 1 mm (1–3); 100 μm (4); 300 μm (5); 50 μm (6); 10 μm (7, 9); 20 μm (8).
Published: 01 January 2021
Figure 5. SEM images of acrotretoid Linnarssonia sapushanensis n. sp. from the Wulongqing Formation (Series 2, Stage 4) at Sapushan and Shijiangjun sections of Yunnan Province, and comparison to Eohadrotreta zhenbaensis Li and Holmer, 2004 from the Shuijingtuo Formation of Hubei Province
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Photomicrographs illustrating mudstone textures and characteristics of organic pores of lower Silurian and lower Cambrian mudstone samples: (A) Scanning electron microscopy (SEM) image of a Longmaxi Formation organic-rich shale (total organic carbon [TOC] = 5.43 wt. %; equivalent vitrinite reflectance [EqVRo] = 2.83% (Zhao et al., 2023); burial depth = 5959.2 m) displaying microquartz aggregates that appear to be concentrated along bedding planes and interparticle pores filled with migrabitumen. The close-up image illustrates the migrabitumen containing abundant organic pores (sample PS1-05). (B) The SEM image showing microquartz (MiQ) and nanoquartz (NaQ) grains in a Wufeng Formation siliceous mudstone sample (TOC = 4.85 wt. %; EqVRo = 2.95% [a value of sample DY5-16 from well DY5] (Liu et al., 2022); burial depth = 3813.6 m) lacking other inorganic minerals. A triangular rigid framework formed by NaQ grains is filled with porous migrabitumen suggesting that the NaQ grains effectively resisted the effects of mechanical compaction (sample DY5-03). (C) The SEM image of an Shuijingtuo Formation (SJT) organic-rich mudstone sample (TOC = 8.14 wt. %; EqVRo = 2.39% (Zhao et al., 2023); burial depth = 1864.6 m) illustrating compaction-related deformation of ductile organic matter that appears to lack pores (sample YY1-28). (D) Deformed (fractured) organic-rich SJT mudstone. The fractures are filled with calcite (Cal). XPL = cross-polarized light.
Published: 01 June 2024
. A triangular rigid framework formed by NaQ grains is filled with porous migrabitumen suggesting that the NaQ grains effectively resisted the effects of mechanical compaction (sample DY5-03). (C) The SEM image of an Shuijingtuo Formation (SJT) organic-rich mudstone sample ( TOC = 8.14 wt. %; EqVR o = 2.39
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Photomicrographs illustrating the occurrence of detrital quartz (DeQ) grains and quartz outgrowths in studied lower Cambrian and lower Silurian mudstone samples. Points delineated by red stars were analyzed by energy dispersive x-ray spectrometry. (A) Qiongzhusi Formation (QZS) mudstone dominated by irregular DeQ grains, mica, calcite (Cal), and amorphous organic matter (OM) (sample ZY1-21). (B) Longmaxi Formation (LMX) mudstone sample dominated by irregular DeQ grains and amorphous OM. Quartz silt is concentrated along layers (indicated by yellow dashed lines) (sample PS1-18). (C) Shuijingtuo Formation (SJT) mudstone sample containing abundant DeQ grains and other detrital minerals, including K-feldspar (K-F) (sample YY1-26). (D) Scanning electron microscopy (SEM) image of an LMX mudstone sample dominated by angular DeQ grains and clay (sample PS1-13). The SEM (E) and cathodoluminescence (CL) (F) images illustrating angular DeQ grains in a SJT mudstone sample displaying bright luminescence. Small fragmented DeQ grains (indicated by yellow dotted line) appear to have been cemented by dark luminescent quartz (Q) to form a large quartz grain (indicated by green dotted line) (sample YY1-31). The SEM (G) and CL (H) images illustrating Yanjiahe Formation (YJH) mudstone composed of carbonate fluorapatite (CFA) and Q that appears to have been cemented by dark to nonluminescent Q suggesting an authigenic origin. The angular Q grain in the center of the image displaying relatively bright luminescence is probably DeQ (sample YY1-05). PPL = plane-polarized light; XPL = cross-polarized light.
Published: 01 June 2024
) Shuijingtuo Formation (SJT) mudstone sample containing abundant DeQ grains and other detrital minerals, including K-feldspar (K-F) (sample YY1-26). (D) Scanning electron microscopy (SEM) image of an LMX mudstone sample dominated by angular DeQ grains and clay (sample PS1-13). The SEM (E