Pre-Rodinia supercontinent Nuna shaping up: A global synthesis with new paleomagnetic results from North China

Zhang, Shihong; Li, Zheng‐Xiang; Evans, David A.D.; Wu, Huaichun; Li, Haiyan; Jia, Dong

doi:10.1016/j.epsl.2012.07.034

Cited by 464 publications

(215 citation statements)

References 74 publications

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“…These rocks offer a rare glimpse into the mechanisms of climate change in the Mesoproterozoic Era (1,600 Ma to 1,000 Ma), and, with a precise chronostratigraphic framework, we are able to suggest an orbital control on climate and marine sedimentation. (31,32). There are suggestions that an active continental margin developed by the time of Xiamaling Formation deposition and that the Xiamaling Formation itself was deposited in a back-arc basin.…”

Section: Significancementioning

confidence: 99%

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Orbital forcing of climate 1.4 billion years ago

Zhang

Wang

Hammarlund

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

123

126

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Fluctuating climate is a hallmark of Earth. As one transcends deep into Earth time, however, both the evidence for and the causes of climate change become difficult to establish. We report geochemical and sedimentological evidence for repeated, short-term climate fluctuations from the exceptionally well-preserved ∼1.4-billion-year-old Xiamaling Formation of the North China Craton. We observe two patterns of climate fluctuations: On long time scales, over what amounts to tens of millions of years, sediments of the Xiamaling Formation record changes in geochemistry consistent with long-term changes in the location of the Xiamaling relative to the position of the Intertropical Convergence Zone. On shorter time scales, and within a precisely calibrated stratigraphic framework, cyclicity in sediment geochemical dynamics is consistent with orbital control. In particular, sediment geochemical fluctuations reflect what appear to be orbitally forced changes in wind patterns and ocean circulation as they influenced rates of organic carbon flux, trace metal accumulation, and the source of detrital particles to the sediment.

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Section: Significancementioning

confidence: 99%

“…Paleomagnetic data suggest that the Xiamaling Formation was deposited in the northern tropics between about 10°N and 30°N latitude (31,32) on the western coast of the ancient supercontinent Nuna. This position would place the Xiamaling Formation right within the influence of Hadley Cell dynamics.…”

Section: Depositional Model For the Xiamaling Formationmentioning

confidence: 99%

Orbital forcing of climate 1.4 billion years ago

Zhang

Wang

Hammarlund

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

123

126

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“…However, different paleogeographic scenarios of Columbia were proposed, mainly due to scarcity of high-quality paleomagnetic poles (e.g. Meert 2002, Zhao et al 2002, 2003, 2004, Pesonen et al 2003, Hou et al 2008a, 2008b, Johansson 2009, Rogers & Santosh 2009, Wingate et al 2009, Yakubchuk 2010, Evans & Mitchell 2011, Zhang et al 2012, Pisarevsky et al 2014among others).…”

Section: Columbia Supercontinentmentioning

confidence: 99%

“…Rogers 1996, Rogers & Santosh 2002, Zhao et al 2002, 2003, 2004, Meert 2002, Pesonen et al 2003, Hou et al 2008a, 2008b, Johansson 2009, 2014, Yakubchuck 2010, Piper 2010, Evans & Mitchell 2011, Zhang et al 2012. This supercontinent has received different names: NENA (Gower et al 1990), NUNA (Hoffman 1997), Columbia (Rogers & Santosh 2002), or Paleopangea (Piper 2010).…”

Section: Introductionmentioning

confidence: 99%

Paleomagnetism of the Amazonian Craton and its role in paleocontinents

et al. 2016

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In the last decade, the participation of the Amazonian Craton on Precambrian supercontinents has been clarified thanks to a wealth of new paleomagnetic data. Paleo to Mesoproterozoic paleomagnetic data favored that the Amazonian Craton joined the Columbia supercontinent at 1780 Ma ago, in a scenario that resembled the South AMerica and BAltica (SAMBA) configuration. Then, the mismatch of paleomagnetic poles within the Craton implied that either dextral transcurrent movements occurred between Guiana and Brazil-Central Shield after 1400 Ma or internal rotation movements of the Amazonia-West African block took place between 1780 and 1400 Ma. The presently available late-Mesoproterozoic paleomagnetic data are compatible with two different scenarios for the Amazonian Craton in the Rodinia supercontinent. The first one involves an oblique collision of the Amazonian Craton with Laurentia at 1200 Ma ago, starting at the present-day Texas location, followed by transcurrent movements, until the final collision of the Amazonian Craton with Baltica at ca. 1000 Ma. The second one requires drifting of the Amazonian Craton and Baltica away from the other components of Columbia after 1260 Ma, followed by clockwise rotation and collision of these blocks with Laurentia along Grenvillian Belt at 1000 Ma. Finally, although the time Amazonian Craton collided with the Central African block is yet very disputed, the few late Neoproterozoic/Cambrian paleomagnetic poles available for the Amazonian Craton, Laurentia and other West Gondwana blocks suggest that the Clymene Ocean separating these blocks has only closed at late Ediacaran to Cambrian times, after the Amazonian Craton rifted apart from Laurentia at ca. 570 Ma.

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“…Tectonically, this period was far from boring, since it involved the activity of the Columbia and Rodinia supercontinent (Zhang et al, 2012). Moreover, the evolution of Earth's biosphere, atmosphere, and hydrosphere is thought to tie with the continental movements (Campbell and Allen, 2008;Santosh, 2010;Young, 2013).…”

Section: Introductionmentioning

confidence: 99%

Silicified microbiota from the Paleoproterozoic Dahongyu Formation, Tianjin, China

et al. 2017

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Abstract.-Cherts and silicified dolostones of the ca. 1600 Ma Dahongyu Formation (uppermost Changcheng Group) from North China contain well-preserved microfossils. Cyanobacteria filaments and coccoids dominate the studied Dahongyu microbiota in the Jixian section. These microfossils show the characteristics of endobenthic, epibenthic, and allochthonous microfossils, which illustrated well a vertical distributional view of an intertidal microbiota. Large numbers and size of allochthonous microfossils are the distinguishing characteristics of this new microbiota. A few of these possess ornaments or odd morphology, which suggest their potential eukaryotic nature. Through regional comparisons, it is revealed that there was significant regional disparity within the Yanshan Basin of microbiotas during deposition of the Dahongyu Formation. The newly studied Dahongyu microbiota is similar to the microbiota from the underlying Changcheng Group, with only slight differences. The absence of typical eukaryotes and the emergence of unique microfossils (especially small fusiform microfossils) make the Dahongyu Formation and the subsequent strata of the Jixian Group distinct from contemporaneous eukaryote-bearing strata.In the Dahongyu assemblage, 19 species were recognized, six species were identified informally and seven species were identified in open nomenclature. One new taxon of microfossil was described: Xiaohongyuia sinica Shi and Feng new genus new species.

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Pre-Rodinia supercontinent Nuna shaping up: A global synthesis with new paleomagnetic results from North China

Cited by 464 publications

References 74 publications

Orbital forcing of climate 1.4 billion years ago

Orbital forcing of climate 1.4 billion years ago

Paleomagnetism of the Amazonian Craton and its role in paleocontinents

Silicified microbiota from the Paleoproterozoic Dahongyu Formation, Tianjin, China

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