Article
Geochemistry & Geophysics
Felix Gervais, Alexandre Beaudry, Charles Kavanagh-Lepage, Abdelali Moukhsil, Kyle P. Larson, Carl Guilmette
Summary: This passage discusses an enigmatic period in Earth's evolution known as the "boring billion," which has been viewed as a time of tectonic quiescence. However, the geological record has generated differing interpretations, leading to confusion. By compiling multidisciplinary geological datasets, the authors present a new model suggesting that the period involved the assembly of a distinct continent through the amalgamation of mature oceanic arcs/back-arcs, resolving contradictions between tectonic proxies and the geological record and confirming the excitement of the Mesoproterozoic Era.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Hang Li, Chao Wang, Willis Hames, Jiangbo Hao, Joseph G. Meert, Zunpu Yu, Shuai Zhang, Xiaokui Sun, Deqing Ma, Xue Li
Summary: This paper presents zircon U-Pb and biotite-muscovite 40Ar/39Ar isotope data from the Yemananshan Complex in the western Central Qilian belt to assess the age and provenance of late Mesoproterozoic-early Paleozoic successions in the Qilian orogen. The results indicate Late Mesoproterozoic-early Neoproterozoic orogenesis and clastic metasedimentary rocks deposited between 1050 and 920 Ma in the Central Qilian belt.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Wen Zhang, Fulai Liu, Chaohui Liu
Summary: Late Paleoproterozoic to early Neoproterozoic strata in the Liao-Ji area provide a significant record of sediment provenance transition from the North China Craton to the Grenvillian orogeny. Detrital zircon spectra document the change in sediment sources over time.
PRECAMBRIAN RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
A. Bird, M. Thirlwall, R. A. Strachan, I. L. Millar, E. D. Dempsey, K. Hardman
Summary: The presence of eclogites within continental crust is a crucial indication of collisional orogenesis. Redating the eclogites in the Eastern Glenelg basement inlier of the Northern Highland Terrane provides more accurate constraints on the timing of the Grenville Orogen collision. The results suggest that the onset of continent-continent interaction occurred around 1200 Ma, and the amalgamation of the Northern Highland Terrane with the Laurentian foreland happened around 1000 Ma at the terminal stages of the Grenville collision.
GEOSCIENCE FRONTIERS
(2023)
Article
Geochemistry & Geophysics
Daniele Thallner, Andrew J. Biggin, Henry C. Halls
Summary: Long-term variations of the geomagnetic field, particularly during the Ediacaran period, provide insights into the evolution of Earth's deep interior. Palaeointensity data from the Grenville Dykes suggest the presence of an equatorial dipole in the geomagnetic field around 585 Ma.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geosciences, Multidisciplinary
K. Papapavlou, A. Moukhsil, A. Poirier, J. H. F. L. Davies
Summary: The detrital zircon analysis of the Grenville Province provides insights into the pre-collisional crustal evolution. Different sequences exhibit distinct age peaks, indicating various crustal growth and reworking events.
GEOLOGICAL MAGAZINE
(2022)
Article
Geology
Susobhan Neogi, Tapan Pal, Debaditya Bandyopadhyay
Summary: This study investigates the metamorphic history of the Meghalaya Gneissic Complex in northeast India using various methods and reconstructs its temperature-pressure path. The research reveals that metamorphism in the region started around 1035 Ma and reached its peak at around 976 Ma. This study highlights the significance of late Mesoproterozoic to early Neoproterozoic metamorphism in relation to the collision of North and South Indian cratonic blocks in the area.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geosciences, Multidisciplinary
Zhiwei Wang, Zhihui Wang, Yanjie Zhang, Bei Xu, Yanguang Li, Yingjie Tian, Yicun Wang, Jia Peng
Summary: The record of Meso-to Neoproterozoic magmatism and sedimentation in the western Xing'an-Airgin Sum Block provides evidence for the close relationship between the block and southern Laurentia, as well as their connection to the supercontinent cycles. The findings suggest that the 1.4 Ga calc-alkline granite-rhyolite association in the western Xing'an-Airgin Sum Block was likely formed during the Columbia breakup, similar to the Granite-Rhyolite Province in southern Laurentia. The study also reveals the accumulation of siliciclastic, mixed clastic and carbonate sequences during two stages in the western Xing'an-Airgin Sum Block, which corresponds to the Grenville orogenic cycle in the Rodinia assembly on the southern Laurentia margin.
Article
Geology
Wen Zhang, Fulai Liu, Chaohui Liu
Summary: The Qiaotou Formation in southern Jilin and Liaoning Provinces at the eastern margin of the North China Craton has a depositional age of 1.1-0.9 billion years ago. The U-Pb age dating of detrital zircons revealed peaks at various ages, with younger zircons possibly derived from the North China Craton, while Mesoproterozoic zircons' origin remains uncertain.
INTERNATIONAL GEOLOGY REVIEW
(2021)
Article
Geosciences, Multidisciplinary
Zhensheng Li, Xueting Ma, Wei An, Ross N. Mitchell, Quanzhong Li, Zhongwu Lan, Yinxiao Dong, Yan Zhang, Jianxun Li
Summary: The study on the Bagongshan Group (BGG) of the Xuhuai Basin provides important constraints on the depositional age and provenance change of the North Qinling Terrane (NQT) in relation to the North China Craton (NCC). The results show that the accretion of NQT to NCC occurred before the deposition of the Liulaobei Formation at around 1.18 Ga, supporting the idea that NQT is a missing piece of the Grenvillian orogen in the reconstruction of the supercontinent Rodinia.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Jiahao He, Xiucai Li, Manlan Niu, Chris Yakymchuk, Chen Li, Zhen Yan, Changlei Fu, Zhe Heng
Summary: Late Mesoproterozoic to early Neoproterozoic metamorphic and magmatic events related to the assembly of Rodinia are identified in microcontinents from the northeastern Tibetan Plateau. This study improves the understanding of microcontinent evolution in the northeastern Tibetan Plateau during the assembly of Rodinia and provides important constraints on the reconstruction of Rodinia.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Andrew S. Merdith, Simon E. Williams, Alan S. Collins, Michael G. Tetley, Jacob A. Mulder, Morgan L. Blades, Alexander Young, Sheree E. Armistead, John Cannon, Sabin Zahirovic, R. Dietmar Mueller
Summary: Recent progress in plate tectonic reconstructions has expanded beyond continental drift to reconstruct the full evolving configuration of tectonic plates and plate boundaries. A continuous full-plate model spanning 1 billion years to present-day has been developed, incorporating a revised model for the Neoproterozoic-Cambrian period and connecting it with models of the Phanerozoic. The model is geologically constrained and based on preserved data from past plate boundaries, with the goal of providing a detailed and self-consistent tectonic reconstruction for the last billion years of Earth's history.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Christopher Lambert, Felix Gervais, James L. Crowley, Abdelali Moukhsil, Charles Kavanagh-Lepage
Summary: In this study, U-Pb zircon geochronology is used to determine the age of melt-present deformation in the Mesoproterozoic Grenville Orogen along the Highway 117 transect in western Quebec, Canada. Six syn- to late-deformational felsic leucosomes and injected veins are analyzed, revealing complex zircon morphologies with overlapping Grenvillian ages between ca. 1020-968 Ma. Pervasive migmatites and incorporation of brecciated mafic components within the ductile channel during the youngest phase of the Grenville Orogen support the concept of Rigolet ductile flow in the Parautochthonous Belt in eastern Quebec.
PRECAMBRIAN RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
R. A. Glen, R. A. Cooper
Summary: New insights into the Late Precambrian-latest Devonian evolution of the Pacific margin of Gondwana reveal three key tectonic elements, suggesting that convergence along the margin was essentially simultaneous and showing possible trajectories of offshore terranes.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Nadezhda A. Kanygina, Andrey A. Tretyakov, Kirill E. Degtyarev, Victor P. Kovach, Sergei Yu Skuzovatov, Kwan-Nang Pang, Kuo-Lung Wang, Hao-Yang Lee
Summary: The metasedimentary complexes represented by quartzite-schist Kiik Group play a significant role in the structure of the Aktau-Mointy terrane, with accumulation occurring in the late Mesoproterozoic to early Neoproterozoic. U-Pb LA-ICP-MS dating of detrital zircons reveals age estimates predominantly falling within certain intervals, showing similarities with other terranes in the western CAOB.
PRECAMBRIAN RESEARCH
(2021)