Article
Geology
Qin Ye, Hanjie Wen, Chongguang Luo, Yu Chen, Wenxiu Yu, Yi Cui
Summary: A lithium-rich claystone with great potential for lithium exploration has been discovered in Central Yunnan, China. However, the origin of the claystone is still being debated. Through various analyses, it was found that the age distribution and source of the claystone differ. It is suggested that the weathering products from the Weining Formation may have provided the primary material for the Daoshitou Formation claystone.
ORE GEOLOGY REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Pascal Asmussen, Brett Pidgeon, Oliver Gaede, David Gust, Thomas Flottmann
Summary: The Surat Basin is a shallow intracratonic basin that developed in response to the Gondwanan breakup and is significant for Coal Seam Gas production. The identification of the boundary between the Walloon Coal Measures and the overlying Springbok Sandstone is crucial for the stratigraphic framework and groundwater flow units. Sediment provenance analysis using detrital zircon U-Pb geochronology facilitates the identification of basin dynamics within the Surat Basin.
Article
Geosciences, Multidisciplinary
Xiaohui Liu, Rui Gao, Xiaoyu Guo, Lin Ding
Summary: This study investigates the uplift history of the central Tibetan plateau through the analysis of zircon grains in the Lunpola basin sediments. The results reveal that the central Tibetan plateau experienced crustal thickening and surface elevation increase from the Paleogene to the Oligocene, which may be associated with convective removal of a thickened Tibetan lithosphere.
Article
Geosciences, Multidisciplinary
P. Asmussen, D. A. Gust, S. E. Bryan, D. Purdy, D. Murphy, C. M. Allen
Summary: The Devonian period witnessed the stabilization of the Thomson Orogen and the emergence of the New England Orogen in the Australian Tasmanides. The Adavale and Darling basins, the two largest cover basins, were studied to investigate their connection and provenance. The results indicate that they were not connected during the Devonian.
Article
Geosciences, Multidisciplinary
Jun-Jian Li, Zhi-Cai Dang, Chao Fu, Peng-Peng Zhang, Jie-Peng Tian, Jiang-Tao He
Summary: The Yangjiakuang gold deposit, located in the Penglai-Qixia-Fushan Gold Belt, is different from previous gold deposits in terms of host rocks. It is formed in the marble of the Paleoproterozoic Fenzishan Group, unlike the Archean gneiss and Mesozoic granite-hosted deposits. Two orebodies controlled by the Yangjiakuang syncline have been explored, and three ore-forming stages have been identified.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geology
Guangyan Zhou, Long Li, Guoqiao Xiao, Luo Yan, D. Graham Pearson, Qingzhen Hao, Yuanbao Wu
Summary: This study presents a new approach to determine the provenance of eolian sediments from the Chinese Loess Plateau. By using a multi-proxy (zircon, monazite, and rutile) U/Th-Pb geochronology approach, the researchers found spatial variability in sediment provenance and its potential relationship with westerly/northwesterly winds. These findings have important implications for the study of the provenance of eolian deposits worldwide.
Article
Geochemistry & Geophysics
J. W. D. Strong, P. A. Cawood, A. R. Cruden, O. Nebel, J. Mulder, A. P. Dickin
Summary: The Winnipeg River terrane, one of the oldest plutonic-gneiss terranes in the Archean Superior Province, plays a crucial role in understanding the evolution of Earth's largest Archean craton. The study evaluates the evolution of this terrane using various isotope data, revealing important information about rock crystallization and crustal recycling.
Article
Geosciences, Multidisciplinary
Alf Andre Orvik, Trond Slagstad, Bjorn Eske Sorensen, Ian Millar, Harald Hansen
Summary: This study presents new mineralogical, geochronological, and isotopic data for the Gallojavri ultramafic intrusion in the Karasjok Greenstone Belt. The study suggests that the intrusion was formed around 2.05 billion years ago and experienced incomplete magma mixing and crustal interaction.
PRECAMBRIAN RESEARCH
(2022)
Review
Geosciences, Multidisciplinary
Paula Castillo, Heinrich Bahlburg, Rodrigo Fernandez, C. Mark Fanning, Jasper Berndt
Summary: This study aims to test the representativity of detrital zircon U-Pb datasets by combining new and published data from 31 large river systems in Europe. The results show that although these data qualitatively represent the geological events in Europe at the continental scale, this is not always the case at the basin scale. The study finds that variations in zircon fertility and sand generation potential greatly bias the U-Pb age distributions.
EARTH-SCIENCE REVIEWS
(2022)
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
Geosciences, Multidisciplinary
Brittney Gregory, Achim D. Herrmann, Thomas Ireland, Peter D. Clift
Summary: The study reveals the distribution of sediment sources in the modern Mississippi River and estimates the sand supply from different tributaries, while also identifying the impact of human activities on the river system. The research found that the importance of the Arkansas River in sediment supply was overestimated, and the majority of sediment in the Mississippi River comes from the Missouri River.
Article
Geosciences, Multidisciplinary
Weiwei Xue, Xiumian Hu, Eduardo Garzanti, Anlin Ma, Wen Lai, Chao Li
Summary: Detrital zircon data from the Tibetan Plateau were analyzed using a new method that identified distinct detrital-zircon age facies in different geological domains. The study successfully distinguished source regions and provided insights into the provenance of sedimentary units in diverse geological terranes. The combination of detrital-zircon age facies and multidimensional scaling methods proved to be an effective approach for provenance analysis.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geography, Physical
Yetong Wang, Guoqiang Sun, Shangshang Bo, Shuang Fu, David Cruset, Juan Diego Martin-Martin, Hui Guo, Irene Cantarero, Vinyet Baques, Guojun Chen, Shuncun Zhang, Anna Trave
Summary: This paper investigates the provenance of the Cenozoic sediments filling the Qaidam Basin by analyzing petrology, major elements, trace elements, rare earth elements, and Zircon U-Pb dating. The results reveal the complex interaction between orogenic belts and surrounding sedimentary basins and the role of plate collision in the basin-mountain coupling process.
GLOBAL AND PLANETARY CHANGE
(2023)
Article
Geology
Manuela de Oliveira Carvalho, Catherine M. Mottram, Claudio de Morisson Valeriano, Renato Rodriguez Cabral Ramos, Randall Parrish, Joseph Dunlop, Gabriel Paravidini, Carla Cristine Aguiar Neto, Monica Heilbron, Craig Storey
Summary: Multiproxy analysis is a powerful tool for studying the evolution of syn-rift sedimentary basins. The Resende Basin in Brazil is a classic example of a syn-rift basin developed under oblique extension. This study uses detrital zircon analysis to characterize the sediment provenance and understand the changes throughout the basin's evolution.
SEDIMENTARY GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Pendanath Gopinathan Athira, Krishnan Sajeev, Sanjeewa P. K. Malaviarachchi, Paul Mathews George, Mingguo Zhai, Ligang Zhou, Gayathri K. Wijeratne, Prasanna Lakshitha Dharmapriya, Brian F. Windley, Valiyaveettil Abdu Ayisha
Summary: In this study, new U-Pb ages of zircons and monazites were obtained from beach placers in Sri Lanka. The results provide insights into the provenance and history of crustal evolution. The zircon ages indicate major concentration periods at 650-450 Ma, 1000-650 Ma, and 2300-1600 Ma, with a few grains exceeding 2500 Ma. The monazite ages suggest a metamorphic origin around 580-481 Ma. The trace element chemistry of monazites suggests their derivation from garnet-bearing metasedimentary rocks. The similarities in age distributions and Hf isotopic signatures between Sri Lanka, Southwest India, Madagascar, and East Africa indicate a connection during the Paleoproterozoic to early Mesoproterozoic, providing evidence for the distribution and configuration of the Columbia Supercontinent.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Maximilian Droellner, Milo Barham, Christopher L. Kirkland
Summary: This study reconstructs the sediment routing system of the Canning Basin during the Early Cretaceous and reveals its response to the supercontinent dispersal using multi-proxy analysis. The majority of the detrital grains are sourced from the crystalline basement in central Australia, indicating the negligible influence of proximal sediment supply. Central Australia acted as a major drainage divide during the Early Cretaceous, and a sediment pathway from Antarctica provided a template for drainage in this period.
Correction
Geosciences, Multidisciplinary
Juan C. C. Afonso, Walid Ben-Mansour, Suzanne Y. Y. O'Reilly, William L. L. Griffin, Farshad Salajegheh, Stephen Foley, Graham Begg, Kate Selway, Andrew Macdonald, Nicole Januszczak, Ilya Fomin, Andrew A. A. Nyblade, Yingjie Yang
Article
Geochemistry & Geophysics
Kieran A. Iles, Arto V. Luttinen, Christoph Beier, Jussi S. Heinonen, Martin J. Whitehouse, Sanni T. Turunen
Summary: The Karoo large igneous province can be divided into rift zone and basin-related groups. The picrites from the Luenha river in Mozambique represent the latter group. New data on O isotopes, major and trace elements for olivine combined with MELTS crystallization modeling reveal compositional diversity associated with magma differentiation and source heterogeneity. These data indicate contributions from two mantle sources, one with elevated δ18O and another with more typical mantle δ18O.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2023)
Article
Geochemistry & Geophysics
Andreas Zametzer, Christopher L. Kirkland, Milo Barham, Nicholas E. Timms, Michael I. H. Hartnady, Aaron J. Cavosie, Bryant Ware, William D. A. Rickard, Timmons Erickson
Summary: Hypervelocity impacts have had a significant impact on the evolution of Earth's continental crust. The use of accessory minerals and rock-forming minerals like zircon and quartz, respectively, has been common in dating impact events and measuring shock-induced deformation. However, feldspar group minerals, which are major components of most crustal rocks, have not been extensively utilized in documenting impact-induced deformation and alteration. This study explores the potential of using Pb isotope analysis in alkali feldspar to identify impact-related modifications and estimate their timing.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geochemistry & Geophysics
Janne Liebmann, Milo Barham, Christopher I. L. Kirkland
Summary: The Grenville Orogen in North America contains Proterozoic anorthosite massifs that were emplaced episodically. These magmas were formed through fractional crystallization of plagioclase from mafic magma. U-Pb geochronology and Zr-in-rutile analyses of the Lac Malbaie complex in Quebec provide information on the tectonothermal history of anorthosite emplacement. The rutile ages obtained suggest variable modification of cooling ages during later intrusion and fluid mobilization events.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Geology
Maximilian Drollner, Milo Barham, Christopher L. Kirkland, Malcolm P. Roberts
Summary: Dating of xenotime outgrowths (XOs) showed that they were detrital and transported with the zircon. Integration of geochronology and geochemistry linked XOs to intermediate geological events in the source area. These findings emphasize the importance of evaluating a potential detrital origin for XOs.
Article
Geosciences, Multidisciplinary
Maximilian Drollner, Milo Barham, Christopher L. Kirkland, Martin Danisik, Julien Bourdet, Maike Schulz, Mehrooz Aspandiar
Summary: Accurate dating of continental climate change is challenging due to the lack of dateable terrestrial products. In this study, ferruginous indurations from the Nullarbor Plain in Australia were used to determine the timing of Plio-Pleistocene aridification. The results suggest that the formation of ferruginous indurations was linked to a decline in the groundwater table caused by a rapid climatic shift. This finding highlights the importance of ferruginous indurations as targets for obtaining absolute ages on landscape evolution and improving understanding of environmental drivers of species diversification and extinction.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Editorial Material
Mineralogy
William L. Griffin, Vered Toledo, Suzanne Y. O'Reilly
MINERALOGICAL MAGAZINE
(2023)
Article
Environmental Sciences
Christopher L. Kirkland, Hugo K. H. Olierook, Martin Danisik, Janne Liebmann, Julie Hollis, Bruno V. Ribeiro, Kai Rankenburg
Summary: The age of ancient shear zones in the Akia Terrane, Greenland, was determined using inverse thermal history modelling and collision cell laser ablation. The results indicate that mylonitic biotite in the shear zones has a radiogenic-Sr accumulation age of approximately 1.75 billion years ago. This research is important for terrane recognition and understanding early Earth tectonic activities.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Environmental Sciences
Martin Danisik, Christopher L. Kirkland
Summary: Rifting and passive margin formation between Greenland and North America occurred from the late Triassic to the Early Cretaceous, as indicated by low-temperature (U-Th)/He thermochronology and landform analyses from southern West Greenland.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Andreas Petersson, Anthony I. S. Kemp, Maud Boyet, Martin J. Whitehouse, Matilda Boyce, Malcolm Roberts, Allen Kennedy
Summary: This study assesses the reliability of the Sm-Nd system in the oldest rocks in the Pilbara Craton using petrography, element mapping, and microanalysis of accessory minerals, along with whole rock Sm-Nd data. The results show that despite multiple thermal events and breakdown of the REE-rich mineral allanite, the Mount Webber rocks retained the Sm-Nd isotope signatures of their magmatic protoliths at the whole-rock scale. The study highlights the benefits of a combined analytical approach to obtain a more complete record of the source and thermal evolution of ancient, highly metamorphosed igneous rocks.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Ecology
Rickard Stenow, Elizabeth K. Robertson, Martin J. Whitehouse, Helle Ploug
Summary: This study investigates the cell-specific activities of a chain-forming diatom and its interactions with attached bacteria using stable isotopic tracers and secondary ion mass spectrometry (SIMS). The results show that, under nutrient limitation, there is low variance of assimilation within diatom chains, with attached bacteria able to obtain nutrients from the assimilates. However, as the chain length decreases, assimilation in the solitary cells becomes more significant. In the late stationary phase, cells with different activities coexist within the same chain, and bacterial remineralization and nutrient transfer between neighboring cells may play an important role in cell survival under nitrogen-limited conditions.
Article
Multidisciplinary Sciences
Thomas M. M. Gernon, Stephen M. M. Jones, Sascha Brune, Thea K. K. Hincks, Martin R. R. Palmer, John C. C. Schumacher, Rebecca M. M. Primiceri, Matthew Field, William L. L. Griffin, Suzanne Y. Y. O'Reilly, Derek Keir, Christopher J. J. Spencer, Andrew S. S. Merdith, Anne Glerum
Summary: Kimberlites are explosive magmas that contain volatile materials and sometimes diamonds, erupted on Earth's surface in the past. They originate from depths exceeding 150 km in Earth's mantle, occur in stable cratons, and are broadly synchronous with supercontinent cyclicity. It remains unclear whether their mobilization is driven by mantle plumes or by mechanical weakening of cratonic lithosphere. This study suggests that most kimberlites erupted about 30 million years after continental breakup, indicating an association with rifting processes.
Article
Multidisciplinary Sciences
Sara Callegaro, Don R. Baker, Paul R. Renne, Leone Melluso, Kalotina Geraki, Martin J. Whitehouse, Angelo De Min, Andrea Marzoli
Summary: This study investigates the sulfur and fluorine budgets of Deccan lavas from India and their potential impact on the environment. The results show that volcanic fluorine budgets varied, indicating a regional effect on the environment. The highest sulfur budgets were found in Deccan lavas just prior to the extinction interval, while later basalts had lower sulfur content. This suggests that volcanic sulfur emissions may have caused global temperature drops before the asteroid impact.
Article
Environmental Sciences
Zeng-Qian Hou, Bo Xu, Haijiang Zhang, Yuan-Chuan Zheng, Rui Wang, Yan Liu, Zhuang Miao, Lei Gao, Zhidan Zhao, William L. Griffin, Suzanne Y. O'Reilly
Summary: Rare earth element ore deposits in southwestern China are associated with carbonatite derived from the mantle, but the formation of carbonatite and the processes of rare earth element enrichment and transport in the mantle are not yet fully understood. By combining seismic tomography with geochemical data, we have obtained images of the lithospheric structure of a Cenozoic rare earth element ore belt in southwestern China. The subduction of the Indian continent led to vertical upwelling and lateral flow of the asthenosphere, triggering melting of the overlying subcontinental lithospheric mantle and the formation of carbonatite. This metasomatism of the mantle, previously influenced by fluids from recycled marine sediments, is a critical precursor process for the formation of giant rare earth element systems. The key factors for the formation of the studied ore belt include a thick lithosphere with a continental root, prior rare earth element enrichment of the subcontinental lithospheric mantle, and a weak pathway for magma ascent.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)