All Articles tagged Paleoproterozoic

• Science Paper
  October 01, 2024 EDT
  Zircon U-Pb Age and Hf-O Isotope Evidence of the Taihua Complex on the Southern Margin of the North China Craton: Implications for Its Magmatic Process During the Early Paleoproterozoic
  Nancy Hui-Chun ChenYunpeng DongBo Hui

  At ca. 2.2 Ga, the Taihua Complex within the Xiaoqinling area underwent low-temperature hydrothermal reactions during the magmatic crystallization, which might have affected by the Huronian Glaciation Event?

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• Science Paper
  April 15, 2024 EDT
  Abundant 2480 Ma Detrital Zircons in ∼1740 Ma Vishnu Schist in Northwestern Arizona: Derivation From the Matachewan Large Igneous Province?
  Jon E. SpencerMichael F. DoeKenneth J. Domanik

  Abundant ∼2480 Ma zircons in ∼1740 Ma psammitic schist in northwestern Arizona were possibly derived from the Matachewan large igneous province at the southern margin of the Archean Superior province.

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• Science Paper
  May 01, 2022 EDT
  Proterozoic-Mesozoic Development of the Quanji Block From Northern Tibet and the Cratonic Assembly of Eastern Asia
  Chao WangDavid A. D. EvansMeng LiJi-Heng ZhangJian HanBin WenJian WangJun-Feng Zhao

  Unraveling the timing, location, and mechanisms of cratonic aggregation in Earth9s continental jigsaw puzzle is a key factor for plate tectonic reconstructions. The Quanji Block (QB) is a sliver of...

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• Science Paper
  February 01, 2022 EDT
  A Neoarchean to Paleoproterozoic Magmatic Arc in the Trans-North China Orogen: Petrological and Geochemical Constraints From the Tianzhen Gneisses in the Huai’an Complex
  Dingyi ZhaoMin Sun

  In the past two decades, extensive investigations have been carried out on the Trans-North China Orogen (TNCO), a Himalayan-type continental collisional belt along which the Eastern Block and the Western...

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• Science Paper
  January 01, 2021 EDT
  Unravelling the P-T-t History of Three High-Grade Metamorphic Events in the Epupa Complex, NW Namibia: Implications for the Paleoproterozoic to Mesoproterozoic Evolution of the Congo Craton
  Sönke BrandtReiner KlemdHanqiang XiePatrick Bobek

  ...

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• Science Paper
  February 01, 2019 EDT
  Shallow Water Redox Conditions of the mid-Proterozoic Muskwa Assemblage, British Columbia, Canada
  Eric J. BellefroidNoah J. PlanavskyAshleigh V. S. HoodGalen P. HalversonKasparas Spokas

  The mid-Proterozoic was a time of apparent prolonged biological and geochemical stability, preceeding the environmental turmoil and rapid biological innovations that characterized the Neoproterozoic. Despite an upswing in work on...

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• Science Paper
  April 01, 2018 EDT
  Earth’s Oldest Preserved K-bentonites in the ca. 2.1 Ga Francevillian Basin, Gabon
  Olabode M. BankoleAbderrazak El AlbaniAlain MeunierFlorent PamboJean-Louis PaquetteAndrey Bekker

  Bentonites are the alteration product of volcanic tephra typically preserved in low-energy, sedimentary environments below baseline. Although volcanic tuffs occur throughout the Earth9s history, bentonites older than ca. 1.5 Ga...

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• Science Paper
  December 01, 2010 EDT
  Metamorphism of the Lüliang Amphibolite: Implications for the Tectonic Evolution of the North China Craton
  Guochun ZhaoChangqing YinJinghui GuoMin SunSanzhong LiXuping LiChunming WuChaohui Liu

  The Lüliang Complex is located in the southern sector of the Trans-North China Orogen, a continent-continent collisional belt along which the discrete Archean Eastern and Western blocks amalgamated to form...

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• Science Paper
  November 01, 2010 EDT
  Paleomagnetism of 1780–1770 Ma Mafic and Composite Intrusions of Småland (Sweden): Implications for the Mesoproterozoic Supercontinent
  S. A. PisarevskyG. Bylund

  We present a paleomagnetic study of 1785 to 1770 Ma composite and mafic intrusions in Småland, Sweden. A positive inverse baked contact test suggests the primary nature of their magnetization....

  Abstract