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Zhengmuguan Formation

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Image
Representative photographs showing characteristics of stratigraphy and sedi...
Published: 22 February 2024
) Stromatolitic dolomite of the Wangquankou Formation at the Yinshixia Section. ( d ) Overview of the Ediacaran Zhengmuguan Formation at the Qinglongshan Section. ( e ) Basal conglomerate of the Zhengmuguan Formation unconformably overlying the Wangquankou Formation at the Yinshixia Section with insert displaying
Journal Article
Published: 01 November 2007
Journal of Paleontology (2007) 81 (6): 1396–1411.
... occur in Chaidam, although a cap carbonate lies atop the diamictite unit. The diamictites in both blocks have been variously interpreted as Cryogenian, Ediacaran, or Cambrian glacial deposits. In this paper, we describe problematic macrofossils collected from slate of the upper Zhengmuguan Formation...
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Journal Article
Published: 01 March 2011
Geological Magazine (2011) 148 (2): 329–333.
... et al . 2007), and the Zhengmuguan Formation in Ningxia Hui Autonomous Region of North China (Shen et al . 2007). Copyright © Cambridge University Press 2010 2010 Cambridge University Press Gaojiashania Shaanxilithes Gaojiashan Ediacaran Figure 2 Biostratigraphic...
Image
Figure  6 —Measurements of 5  Horodyskia moniliformis ? specimens from the ...
Published: 01 November 2007
Figure 6 —Measurements of 5 Horodyskia moniliformis ? specimens from the Zhengmuguan Formation. The diameter of each “bead” in the same series was measured and plotted. Bars represent the 25 th and 75 th percentiles, caps represent the range, and transverse line in the box represents the 50 th
Image
Figure  5 —Measurements of 25  Helanoichnus helanensis  specimens from the ...
Published: 01 November 2007
Figure 5 —Measurements of 25 Helanoichnus helanensis specimens from the Zhengmuguan Formation. Multiple measurements of the width were randomly taken along the length of each specimen. Bars represent the 25 th and 75 th percentiles, caps represent the range, and transverse line in box
Image
Figure  4 — Helanoichnus helanensis  Yang  in  Yang and Zheng, 1985 , from ...
Published: 01 November 2007
Figure 4 — Helanoichnus helanensis Yang in Yang and Zheng, 1985 , from the Zhengmuguan ( 1–6 ) and Zhoujieshan Formations ( 7, 8 ), and Horodyskia moniliformis ? Yochelson and Fedonkin, 2000 , from the Zhengmuguan Formation ( 9–12 ). 1 , ZMG-15 (museum number VPI-4554); 2 , ZMG-15 (museum
Image
Figure  10 —Thin sections of  Helanoichnus helanensis  from the Zhoujieshan...
Published: 01 November 2007
Figure 10 —Thin sections of Helanoichnus helanensis from the Zhoujieshan Formation ( 1 ) and Zhengmuguan Formation ( 2 ). Fossils were identified on bedding surface and were then embedded in epoxy for thin sectioning. Sections were made perpendicular to the bedding plane, and cut along
Journal Article
Published: 22 February 2024
Journal of the Geological Society (2024) 181 (2): jgs2023-150.
... ) Stromatolitic dolomite of the Wangquankou Formation at the Yinshixia Section. ( d ) Overview of the Ediacaran Zhengmuguan Formation at the Qinglongshan Section. ( e ) Basal conglomerate of the Zhengmuguan Formation unconformably overlying the Wangquankou Formation at the Yinshixia Section with insert displaying...
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Image
Figure  8 — Palaeopascichnus minimus  n. sp. ( 1–5 );  Palaeopascichnus men...
Published: 01 November 2007
, ZMG-5 (museum number VPI-4569). Arrow points to the displacement of segments due to bending; 5 , ZMG-5 (museum number VPI-4570). 6 , ZMG-16 (museum number VPI-4571). Sinuous specimens of Palaeopascichnus meniscatus n. sp. from the Zhengmuguan Formation. 7 , Magnified view of the lower left part
Journal Article
Published: 02 July 2009
Geological Magazine (2009) 146 (5): 775–780.
... produce fruiting bodies which form some patterns similar to the ‘Wonoka fossil’ as well as to Horodyskia (Gross, 1994 , fig. 2). In both the Zhengmuguan and Liuchapo formations, the Horodyskia morphotypes resemble fruiting bodies and the Palaeopascichnus–Shaanxilithes morphotypes represent traces...
Journal Article
Published: 01 January 2008
Journal of the Geological Society (2008) 165 (1): 367–378.
... of a terminal spheroidal segment in multiple specimens of P. jiumenensis from the Liuchapo Formation but in none of P. minimus from the Zhengmuguan Formation ( Shen et al . 2007 ) suggests that they represent two species, despite their similar segment size. Thus, we choose to keep them as separate species...
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Comparison of  Horodyskia  species. Bead size and spacing were measured on ...
Published: 01 January 2008
Fig. 5.  Comparison of Horodyskia species. Bead size and spacing were measured on specimens (Liuchapo and Zhengmuguan material) or on published illustrations (Krol D Formation, Mathur & Srivastava 2004 ; Belt Supergroup, Horodyski 1982 ; Fedonkin & Yochelson 2002 ; Bangemall
Journal Article
Journal: Geology
Published: 14 June 2021
Geology (2021) 49 (10): 1160–1164.
... of the Zhengmuguan and Luoquan Formations in the North China block may represent post-Gaskiers glacial deposition. These similarities further suggest that the Qaidam block may have been located close to the North China block during at least late Ediacaran time ( Fig. 4 ). Unlike the Cryogenian global glaciations...
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Journal Article
Journal: Geology
Published: 22 May 2019
Geology (2019) 47 (8): 705–709.
... the Neoproterozoic Era, the Shimengou area near Pingdingshan ( Fig. 1 ) was part of the North China block, over which ice masses extended to deposit the Luoquan Formation. This formation and correlative glaciogenic units (e.g., Fengtai, Zhengmuguan, Hongtiegou Formations) are intermittently exposed over ∼2000 km...
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Journal Article
Published: 01 April 2015
Russ. Geol. Geophys. (2015) 56 (4): 573–583.
... to other sources) ( Zhuravlev et al., 2009 ) with a Pb-Pb isochron date of 553 ± 23 (2σ) Ma ( Semikhatov et al., 2003 ). In China the Khatyspyt-type ichnofabric occurs in the Zhengmuguan, Zhoujieshan, Liuchapo, and Dengying Formations ( Dong et al., 2008 ; Shen et al., 2007 ) and are younger than a U-Pb...
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Journal Article
Journal: PALAIOS
Published: 01 May 2012
PALAIOS (2012) 27 (5): 354–372.
... , The Sinian trace fossils from Zhengmuguan Formation of Helanshan Mountain, Ningxia: Earth Science : Journal of Wuhan College of Geology , v. 10 , p. 9 – 10 . Yuan X Chen Z Xiao...
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Journal Article
Published: 01 April 2015
Russ. Geol. Geophys. (2015) 56 (4): 541–548.
...), Zhengmuguan (Helan Shan Range), and Luoquan Formations and their analogs in North China. In Africa, the Baikonur glacioperiod strata apparently include the Pourpree de l’Ahnet Group “triad” (Ahaggar), Vingerbreek Subformation, and lower beds of the Nomtsas Formation of the Nama Group (Namibia). The main...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 26 August 2024
GSA Bulletin (2025) 137 (1-2): 725–739.
... of the Shaohuotonggou Formation in the southern Alxa Block are comparable to some Ediacaran glacial deposits along the southern margin of the North China craton, such as the Luoquan, Zhengmuguan, and Fengtai Formations ( Dong, 2016 ; Kuang et al., 2019 ; Wang et al., 2021 ). However, our results dispute...
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Journal Article
Published: 01 March 2014
Journal of Paleontology (2014) 88 (2): 269–283.
... and Uchman, 1995 ; Gehling et al., 2001 ; Jensen and Runnegar, 2005 ; Grazhdankin et al., 2011 ) ( Fig. 8 .3–8.6). Meniscate structures from the Zhengmuguan, Zhoujieshan, Liuchapo, and Dengying formations of China (younger than a U-Pb zircon date of 551.09 ± 0.84 Ma; Condon et al., 2005 ; Shen et al...
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Series: GSA Special Papers
Published: 06 March 2020
DOI: 10.1130/2020.2544(02)
EISBN: 9780813795447
... GLACIGENIC FORMATIONS (MODIFIED FROM HOFFMAN AND LI, 2009) Here, we explored the links between the ca. 580 Ma pulse of the Central Iapetus magmatic province and the environmental and climate changes of the Ediacaran glaciation and deglaciation, i.e., the Gaskiers glaciation. Neoproterozoic...
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