Article
Geochemistry & Geophysics
Katarzyna Walczak, Grzegorz Ziemniak, Christopher Barnes, Riccardo Callegari, Michal Bukala, Melanie Kielman-Schmitt, Anna Zagorska, Jaroslaw Majka
Summary: This study expands the knowledge about the Neoproterozoic metamorphic history of the Baltoscandian margin in the northern Scandinavian Caledonides. The research reveals that the studied rocks underwent high-grade metamorphism in the Ediacaran and lack obvious evidence for Caledonian high-pressure metamorphism.
Article
Geology
Yue Zhou, Ziliang Liu, Kaarel Mand, Fengjie Li, Nan Peng, Hongwei Kuang, Yongqing Liu, Yanxue Liu, Minghe Zhang
Summary: This study provides important insights into the paleoclimate, tectonic setting, and provenance attributes of the Jurassic strata in the southern margin of the Junggar Basin, aiding in mineral resources prospecting in the basin.
ORE GEOLOGY REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Yingli Zhang, Zongqi Wang, Tao Wang
Summary: This study provides evidence for understanding the provenance and tectonic evolution of the Shugouzi Formation, with the main source rocks being continental island arc-related felsic rocks and the presence of a remnant arc in the Early Devonian.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2022)
Article
Geosciences, Multidisciplinary
Tor Grenne, Deta Gasser, Reidulv Boe, Fernando Corfu, Oyvind Skar, Trond Slagstad
Summary: This study presents a revised stratigraphic and tectonomagmatic model for the Holonda area, based on remapping, sedimentology, igneous geochemistry, isotopes, and geochronology. The findings suggest that the region experienced arc-continent collision, subduction polarity flip, and rifting, leading to the opening of a wide basin. The study provides valuable insights into the Caledonian orogen and the central Mediterranean tectonic models.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2023)
Editorial Material
Geology
Russell W. Graymer, Trevor A. Dumitrub, Robert J. McLaughlinc, Carl M. Wentwortha
Summary: Serious errors and inconsistencies in the article have undermined many interpretations and rendered the principal conclusions invalid. The reliance on flawed calculations of maximum depositional ages based on zircon analysis of sandstone units has resulted in confusion between maximum and actual depositional ages, making age distinctions finer than the resolution of the data.
INTERNATIONAL GEOLOGY REVIEW
(2022)
Article
Geosciences, Multidisciplinary
Gang Li, Weihai Xu, Yun Luo, Jianguo Liu, Jianxin Zhao, Yuexing Feng, Jun Cheng, Zhen Sun, Rong Xiang, Min Xu, Wen Yan
Summary: This study provides important chronological constraints on the Cenozoic evolution of the southern South China Sea by determining the end time of the collision between the Dangerous Grounds terrane and the Sabah-Palawan Islands. The results indicate an active collision event in the southern South China Sea during the middle Miocene.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2023)
Article
Geosciences, Multidisciplinary
Hakon Austrheim, Torgeir B. Andersen
Summary: Alteration of serpentinized peridotites in Scotland occurred in two steps, forming dolomite-quartz rocks and then jasper-quartzites. These rocks are enriched in certain elements, such as barium, strontium, and arsenic, during the alteration process. The formation of these rocks is important for studying their provenance and tectonic characteristics.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2023)
Article
Geochemistry & Geophysics
Xiao Wang, Xianzhi Pei, Ruibao Li, Chengjun Liu, Lei Pei, Zuochen Li, Youxin Chen, Meng Wang
Summary: This study investigates the relationship between the formation of the East Kunlun Orogen and the tectonic evolution of the Proto-Tethys and Paleo-Tethys Oceans. By analyzing the sandstones from the Halaguole and Haoteluowa formations in the north Tibetan Plateau, the researchers were able to determine their lithology, provenance, and tectonic environment. The results suggest that there was no oceanic subduction in the East Kunlun during the Carboniferous to Early Permian times and that the Paleo-Tethys Ocean likely opened before the Early Carboniferous.
Article
Geosciences, Multidisciplinary
Peter D. Clift, Amy L. Luther, Madison E. Avery, Paul B. O'Sullivan
Summary: The study on Early Ordovician collision and subsequent arc magmatism in western Ireland revealed a continuity in regional magmatism activity from 480-440 Ma, indicating no hiatus in magmatic activity. Differences in zircon U-Pb age spectra suggest basin isolation and influence of sources from different regions, with the western Irish basins forming as pull-apart basins in a forearc setting.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2021)
Article
Geosciences, Multidisciplinary
Riccardo Callegari, Karolina Kosminska, Christopher J. Barnes, Iwona Klonowska, Abigail K. Barker, Sabine Rousku, Erika Naas, Ellen Kooijman, Patrik Witt-Nilsson, Jaroslaw Majka
Summary: Petrology, geochronology and bulk-rock chemistry were used to investigate early Neoproterozoic magmatism and Cambrian-Ordovician metamorphism in the northern Swedish Caledonides. The study revealed bimodal magmatism related to attempted rifting of Rodinia between 870 and 840 Ma.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2023)
Article
Geochemistry & Geophysics
Haibin Wang, Jinjiang Zhang, Yunsong Fan, Lei Guo
Summary: This study analyzed the geochemical characteristics and dating results of an undeformed plutonic complex in the Datan area, suggesting that it may have originated from a mixture of mantle-derived and continental lower crust rocks. The crustal thickening event in the Panyangshan thrust system is believed to have occurred from approximately 274 to 252 Ma.
Article
Geosciences, Multidisciplinary
Xiaozhuang Cui, Guangming Ren, Weihua Pang, Fenglin Chen, Zhiming Sun, Fei Ren, Kuobu Ning, Qi Deng
Summary: This study presents detrital zircon U-Pb ages and Lu-Hf isotopes of metasandstone samples from the Caiziyuan-Tongan accretionary complex (CTAC) in the Yangtze Block. The detrital zircons indicate that the metasandstones were primarily derived from proximal magmatic sources. The age spectrum of the detrital zircons matches well with the exposed magmatic rocks in the Yangtze Block. The study suggests that the CTAC belt may represent a relict suture zone between micro-blocks in the Yangtze Block.
GEOLOGICAL JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
C. J. Barnes, J. Majka, R. Callegari, K. Walczak, G. Ziemniak, M. Bukala
Summary: In this study, the upper gneiss unit in the northernmost Seve Nappe Complex (SNC) in the Scandinavian Caledonides was investigated. The unit underwent exhumation at c. 459 Ma and deformation and fluid infiltration at c. 434 Ma. These events are similar to the deformation histories of other northern SNC terranes, indicating oblique, south-to-north subduction in the Baltic region during the late Cambrian.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2023)
Article
Geosciences, Multidisciplinary
Maria Giuditta Fellin, Massimiliano Zattin, Gian Gaspare Zuffa, L. Fernando De Ros, Jose A. Cupertino, Rogerio Schiffer De Souza, J. Marinho Morais Neto, Claudio Dalmonte
Summary: This study analyzes new petrographic and thermochronologic data from 152 samples in three basins (Para-Maranhao, Barreirinhas, and Ceara) on the equatorial margin of Brazil. The study reveals three evolutionary phases in this region: a rift phase, a post-rift phase during the Late Cretaceous-Palaeogene period, and a post-rift phase since the Late Oligocene. The study estimates that exhumation in this area has reached up to 2-2.5 km since the Late Cretaceous and has not exceeded 1 km since the Late Oligocene.
Article
Geochemistry & Geophysics
Keisuke Eshima, Masaaki Owada, Atsushi Kamei
Summary: This study investigates the rock compositions and formation processes of the Japanese island located in the Northeastern Asian continental margin. The results show that the Northern Kyushu batholith is mainly composed of granitoid and a small amount of mafic rocks. The large-scale igneous activity in this region during the Cretaceous period was possibly sourced from partial melting of the lower crust and mixing with mantle-derived magma. These findings provide new insights into the complex batholith formation processes and heat source.
Article
Geosciences, Multidisciplinary
A. J. McCoy-West, N. Mortimer, K. W. Burton, T. R. Ireland, P. A. Cawood
Summary: The Tuhua Intrusives in New Zealand provide evidence of Phanerozoic subduction and crustal growth at the Gondwana margin. Among them, the Longwood Suite of gabbroic and trondhjemitic intrusions stands out for its isotopic and chemical characteristics. New U-Pb ages, trace element analyses, and Sr-Nd isotope compositions of the Longwood Suite are presented. The results confirm the restricted time range and expand the known distribution of the Longwood Suite. The geochemical characteristics indicate that the granitoids of the Longwood Suite were generated by shallow melting of an amphibolitic residue, suggesting relatively thin lithosphere. The petrotectonic model suggests that the Gondwana continental margin crust was underplated by Permian intra-oceanic island arc crust and mantle lithosphere, which subsequently melted to form the isotopically primitive gabbroic and trondhjemitic plutons of the Longwood Suite.
Article
Multidisciplinary Sciences
Qiang Jiang, Fred Jourdan, Hugo K. H. Olierook, Renaud E. Merle, Julien Bourdet, Denis Fougerouse, Belinda Godel, Alex T. Walker
Summary: The study suggests that the Kerguelen LIP may have contributed to the early Aptian oceanic anoxic event 1a, with lower CO2 emissions compared to LIPs causing severe mass extinctions. The severity of volcanism-related environmental and biotic perturbations is likely positively correlated with the volume and rate of CO2 emissions.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Geology
Wangchao Li, Changqing Yin, Zeming Zhang, Peter A. Cawood, Shun Li, Jian Zhang, Huixia Ding, Jiahui Qian, Yanling Zhang
Summary: This study reports the discovery of poly-cyclic high-pressure low-temperature rocks in the easternmost Indus-Yarlung suture zone, which were formed during the subduction of Neo-Tethyan oceanic lithosphere. The research includes petrology, mineral composition analysis, and P-T pseudosection modeling. The findings reveal a complex metamorphic history involving multiple low-temperature eclogite facies events.
JOURNAL OF METAMORPHIC GEOLOGY
(2023)
Article
Geochemistry & Geophysics
Nicholas J. Gardiner, Jacob A. Mulder, Kristoffer Szilas, Oliver Nebel, Martin Whitehouse, Heejin Jeon, Peter A. Cawood
Summary: During the late Archaean, the assembly and stabilization of juvenile continental terranes contributed to the emergence and deposition of shallow-marine sedimentary sequences. This study examines the formation of the North Atlantic Craton in West Greenland and investigates the timing of continental assembly, stabilization, emergence, and maturation. The geochemical data from zircon and monazite extracted from the Storo quartzite, the oldest mature metasedimentary unit, provide insight into the geological processes involved. The findings contribute to our understanding of the complex processes that led to the development of enduring cratons.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Qiang Jiang, Fred Jourdan, Hugo K. H. Olierook, Renaud E. Merle
Summary: Large igneous provinces (LIPs) are important for plate tectonics, environmental crises, and resource formation. The study of LIPs' ages is crucial for understanding their duration and relationship with other geological events. However, the reliability and precision of dating results need to be critically evaluated.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Bruno Ribeiro, Frederico M. Faleiros, Ginaldo A. C. Campanha, Peter A. Cawood, Christopher L. Kirkland, Milo Barham, Erin L. Martin, Marina Seraine, Dina I. G. Cabrita, Maria T. A. G. Yogi, Vidya V. Almeida, Anny J. A. Forero-Ortega, Elton L. Dantas
Summary: New and compiled detrital zircon U-Pb ages from the southern Neoproterozoic-Cambrian Ribeira Belt, SE Brazil, indicate a distinct affinity of the Embu Terrane compared to the Apial and Sao Roque terranes, supporting an allochthonous interpretation. The detrital zircon age spectra reveal a greater affinity of the Embu Terrane with SW Laurentia basins, suggesting its origin through collision with the Ribeira Belt during the early Neoproterozoic.
GEOSCIENCE FRONTIERS
(2023)
Article
Geochemistry & Geophysics
Shuwen Dong, Jianhua Li, Rui Gao, Peter A. Cawood, Hans Thybo, Stephen T. Johnston, Liqing Jiao, Yueqiao Zhang, Jinming Wang
Summary: In the Cretaceous extensional system of South China, lithospheric extension is mainly accommodated by localized normal faulting and distributed ductile stretching in the lower crust, followed by localized crustal necking and Moho uplift. These crustal and mantle features are kinematically linked, with lower-crustal stretching compensating for upper-crustal thinning and mantle shear zones affecting localized Moho uplift and crustal necking. The extension mechanism varies laterally from magma-poor to magma-rich conditions, resulting in changes in crustal melting, decoupling, and lithospheric mantle configuration.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Pei-yuan Hu, Qing-guo Zhai, Peter A. Cawood, Roberto F. Weinberg, Guo-chun Zhao, Yue Tang, Yi-ming Liu
Summary: Paleogeographic reconstruction of Precambrian terranes reworked by Phanerozoic orogens, such as the Tibetan Plateau, reveals complex lithotectonic relations due to intracrustal reworking. Global and regional detrital zircon rare earth element (REE) databases show trends in LREE/HREE and Eu/Eu* that record the crustal evolution of the source and provide a new approach for paleogeographic reconstructions. By analyzing sedimentary and igneous rocks in the Lhasa terrane and detrital zircon samples from the northern margin of Gondwana, it is demonstrated that the Lhasa terrane had an African affinity in the Rodinia-Gondwana supercontinent cycles (ca. 1.4-0.4 Ga).
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Shihua Zhong, Sanzhong Li, Yang Liu, Peter A. Cawood, Reimar Seltmann
Summary: Using machine learning, researchers analyzed the Jack Hills zircons and found that majority (around 70%) were sourced from igneous and sedimentary type granites, indicating the presence of rocks other than trondhjemite-tonalite-granodiorite suite in Earth's earliest continental crust.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Qi-Wei Li, Oliver Nebel, Jun-Hong Zhao, Rui Wang, Yona Jacobsen, Marianne Richter, Qiang Wang, Peter A. Cawood
Summary: Rocks with adakitic affinities in continental collision zones provide important information about crustal thickening. Traditional understanding suggests that residual garnet during partial melting of the lower crust is responsible for heavy rare earth element and Y depletion in these rocks. However, this study finds that magmatic garnet is rarely observed and amphibole is proposed as an abundant phase in the lower arc crust. The authors report the isotopic compositions of adakitic intrusions, suggesting an amphibolite source and an existing, older crustal foundation. Rating: 8/10.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geochemistry & Geophysics
Eric D. Vandenburg, Oliver Nebel, Peter A. Cawood, R. Hugh Smithies, Fabio A. Capitanio, Laura A. Miller, Marc-Alban Millet, Emilie Bruand, Jean-Francois Moyen, Xueying Wang, Massimo Raveggi, Yona Jacobsen
Summary: Research shows that ancient continental cores, cratons, are not as stable and impermeable as previously thought. Variations in lithospheric thickness within cratons can facilitate fluid movement, leading to elemental redistribution and mineralization.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Jose Ferreira de Araujo Neto, Lauro Cezar Montetalco de Lira Santos, Gustavo Viegas, Carolina P. de Souza, Daniel Miggins, Peter A. Cawood
Summary: Shear zones in the Borborema Province of northeastern Brazil are efficient conduits for mineralizing fluids. The emerald occurrences in this region are associated with strike-slip deformation zones formed during the Neoproterozoic-Cambrian Brasiliano orogeny. The Portalegre shear zone, where the Paraná deposit is located, exhibits distinct aeromagnetic anomalies and mylonitic gneisses and schists with vertical foliation and horizontal mineral stretching lineation. The emerald mineralization is found in phlogopite and actinolite-phlogopite schists and is related to the interaction between Be-bearing pegmatite dykes and amphibolite lenses during strike-slip motion on the shear zone.
JOURNAL OF STRUCTURAL GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yousef Zoleikhaei, Rajat Mazumder, Peter A. Cawood, Shuvabrata De
Summary: Archean cratons provide valuable information about Earth's early history. This study focuses on the Singhbhum Craton in India and examines the magmatism and basin formation events in its northern margin. By analyzing the ages and geochemical characteristics of granite and sedimentary rocks, the study reveals the role of crustal melting in magma genesis and the sources of terrigenous sediments. The findings contribute to our understanding of the early geological evolution of the Earth.
PRECAMBRIAN RESEARCH
(2023)
Review
Geosciences, Multidisciplinary
Peiyuan Hu, Qingguo Zhai, Guochun Zhao, Peter A. Cawood, Yue Tang, Yiming Liu
Summary: This paper systematically summarizes the characteristics of pre-Cryogenian sedimentation, paleontology, magmatism, and metamorphism in the Tibetan Plateau and its surrounding areas, revealing the relationship between these regions and the formation and evolution of the Kenor supercraton, the Columbia, Rodinia, and Gondwana supercontinents.
SCIENCE CHINA-EARTH SCIENCES
(2023)
Article
Geochemistry & Geophysics
Jianghai Yang, Peter A. Cawood, Xiaoping Yuan, Dongxun Yuan, Yinsheng Zhou, Ao Liu, Jianzhong Liu, Yuansheng Du
Summary: This study explores the impact of hydroclimate on landscape erosion using sedimentary records from the late Permian. The findings reveal a negative carbon isotope excursion and a decrease in weathering intensity in the middle Wuchiapingian period. The results suggest a correlation between increased denudation rates and a decrease in paleosalinity, possibly due to higher precipitation.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)