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Xiakou China

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Journal Article
Published: 01 April 2008
Clays and Clay Minerals (2008) 56 (2): 131–143.
... China Clay Minerals Mixed-layer Illite-smectite Permian-Triassic Boundary (PTB) Volcanism Xiakou The Permian-Triassic boundary (PTB) event is widely debated because of the mass extinction which marks the end of the Permian. Permian and Triassic sediments are extensive and well exposed...
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<span class="search-highlight">Xiakou</span> (<span class="search-highlight">China</span>): (A) δ 13 C versus Eu&#x2F;Eu*, and (B) Δδ 13 C versus volcanic i...
Published: 01 November 2012
Figure 4. Xiakou (China): (A) δ 13 C versus Eu/Eu*, and (B) Δδ 13 C versus volcanic interval thickness. Xinmin: (C) δ 13 C versus Eu/Eu*, and (D) Δδ 13 C versus volcanic ash layer thickness. Δδ 13 C represents the absolute shift in δ 13 C associated with each volcanic episode.
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Chemostratigraphy of <span class="search-highlight">Xiakou</span> section (<span class="search-highlight">China</span>). Volcanic-ash-rich intervals (V...
Published: 01 November 2012
Figure 2. Chemostratigraphy of Xiakou section (China). Volcanic-ash-rich intervals (VI-1 to VI-9; shaded) are generally characterized by Al >8% and Eu/Eu* <0.8. Eu/Eu* was calculated as 2 × Eu N /(Sm N +Gd N ), where “N” denotes normalization to average upper crust ( McLennan, 2001 ). Note
Journal Article
Journal: Geology
Published: 01 November 2012
Geology (2012) 40 (11): 963–966.
...Figure 4. Xiakou (China): (A) δ 13 C versus Eu/Eu*, and (B) Δδ 13 C versus volcanic interval thickness. Xinmin: (C) δ 13 C versus Eu/Eu*, and (D) Δδ 13 C versus volcanic ash layer thickness. Δδ 13 C represents the absolute shift in δ 13 C associated with each volcanic episode. ...
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Journal Article
Published: 01 October 2011
Clays and Clay Minerals (2011) 59 (5): 478–489.
... section (the Global Stratotype Section and Point of the PTB) and the Xiakou section, southern China, was undertaken using X-ray diffraction and differential scanning calorimetry (DSC). The results showed that clay minerals of the packstone bed 24e, in which the preludial mass extinction occurred...
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Journal Article
Published: 12 March 2004
Canadian Journal of Earth Sciences (2004) 41 (3): 323–330.
...Wang Guoqing; Xia Wenchen Abstract Xiakou section is situated north of the central Yangtze platform with successive Late Permian to Early Triassic strata, thicker than the Global Stratotype Section and Point (GSSP) of the Permian–Triassic boundary (PTB). We recognized three conodont zones across...
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Location of the Daxiakou section of <span class="search-highlight">Xiakou</span> Town, Xingshan County, western H...
Published: 01 August 2013
FIGURE 1— Location of the Daxiakou section of Xiakou Town, Xingshan County, western Hubei Province, South China.
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Location of the four sections studied in South <span class="search-highlight">China</span> (Zhongzhai section, Sh...
Published: 01 December 2013
Figure 1 Location of the four sections studied in South China (Zhongzhai section, Shangsi section, Xiakou section and Dongpan section) (A and B), and the latest Permian palaeogeography of South China (C, modified after Feng & Gu 2002 ).
Journal Article
Published: 01 December 2022
American Mineralogist (2022) 107 (12): 2176–2187.
... and sedimentary facies, this study investigates anatase nanoparticles formed in fine-grained siliciclastic sediments (ash beds and detrital mudstones) of Permian-Triassic boundary (PTB) successions in South China representing various depositional environments. This region provides ideal conditions to study...
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Paleogeographic map of South <span class="search-highlight">China</span> in the latest Permian showing sedimentar...
Published: 01 December 2022
Figure 1. Paleogeographic map of South China in the latest Permian showing sedimentary facies. Deep-marine sections: Xinmin (XM), Dongpan (DP), Shangsi (SS); Shallow-marine to nearshore littoral sections: Yanlou (YL), Xiakou (XK), Zhongzhai (ZZ), Zhejue (ZJ), Chinahe (CNH); Lacustrine sections
Journal Article
Journal: Palynology
Published: 01 December 2013
Palynology (2013) 37 (2): 325–344.
...Figure 1 Location of the four sections studied in South China (Zhongzhai section, Shangsi section, Xiakou section and Dongpan section) (A and B), and the latest Permian palaeogeography of South China (C, modified after Feng & Gu 2002 ). ...
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Comparison of key Early Triassic bulk nitrogen isotope records: Chaohu, Sou...
Published: 19 June 2020
Figure 8. Comparison of key Early Triassic bulk nitrogen isotope records: Chaohu, South China (this work); Xiakou, South China ( Sun et al., 2019 ); Spiti, northern India (this work); West Blind Fiord, Opal Creek, Buchanan Lake, and Smith Creek, Arctic Canada ( Algeo et al., 2012 ; Schoepfer et
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Phytoplankton from the latest Permian of South <span class="search-highlight">China</span>. Each scale bar is 10 ...
Published: 01 December 2013
Plate 4 Phytoplankton from the latest Permian of South China. Each scale bar is 10 μ m. All figure images were taken using the transmitted light microscope. 1–11, 18–23: Reduviasporonites chalastus ; 12–17: Reduviasporonites catenulatus . The section/sample numbers for all specimens
Journal Article
Published: 01 February 2008
Clays and Clay Minerals (2008) 56 (1): 130.
... The following are some papers that have been accepted for publication in future issues of Clays and Clay Minerals: Hanlie Hong, Ning Zhang, Zhaohui Li, Huijuang Xue, Wenchen Xia, and Na Yu. Clay mineralogy across the P/T boundary of the Xiakou section, China: Evidence of clay provenance...
Journal Article
Journal: PALAIOS
Published: 01 August 2013
PALAIOS (2013) 28 (8): 523–540.
...FIGURE 1— Location of the Daxiakou section of Xiakou Town, Xingshan County, western Hubei Province, South China. ...
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Journal Article
Published: 01 October 2011
Clays and Clay Minerals (2011) 59 (5): 435–437.
... of the PTB) and the Xiakou section, southern China. The crystal chemistry and genesis of these clay minerals was used to infer the temporal link between volcanism and mass extinction at the Permian-Triassic boundary. In summary, Chinese scientists are making novel and pioneering contributions in clay...
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Journal Article
Published: 07 March 2006
Canadian Journal of Earth Sciences (2006) 43 (2): 121–133.
...Mutwakil Nafi; Xia Wenchen; Zhang Ning Abstract Four neogondolellid conodont interval zones were recognized across the Changhsingian stage at Ganxi section, western Hubei Province, south China. They are in ascending order: the Clarkina wangi Zone, the Clarkina changxingensis changxingensis Zone...
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Journal Article
Journal: GSA Bulletin
Published: 17 September 2021
GSA Bulletin (2022) 134 (5-6): 1397–1413.
... to a deep water, lower ramp slope in South China. δ 13 C carb shows a distinct negative shift in all sections and displays a clear, 2–4‰, decreasing gradient accompanying an increase in water depth both before and after the mass extinction. A distinct negative shift in δ 15 N is observed in the shallow...
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Journal Article
Published: 01 October 2015
Journal of Paleontology (2015) 89 (3): 448–464.
... upper Wuchiapingian–Changhsingian conodont biozones and vertical changes of biomicrofacies, delta C 13 (carb) and delta O 18 isotopes at Xiakou section, western Hubei Province, South China : Journal of China University of Geosciences , v. 18 , p. 434...
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Conodonts across the Permian–Triassic boundary in the <span class="search-highlight">Xiakou</span> section. Each ...
Published: 12 March 2004
Fig. 2. Conodonts across the Permian–Triassic boundary in the Xiakou section. Each caption is given in the following order: sample number, scanning electron microscopy-negative number, and angle of view. Scale bar = 100 μ m. All these specimens are preserved in the Fission Trace Dating Laboratory