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Geochemistry & Geophysics
Josua J. Pakulla, Mike W. Jansen, Raymond A. Duraiswami, Purva Gadpallu, Jonas Tusch, Carsten Jentzsch, Ninja Braukmueller, Frank Wombacher, Carsten Muenker
Summary: The Deccan Volcanic Province (DVP) in India, which covers a large area, has recorded about five million years of volcanic activity. Previous studies have shown that DVP basalt has a common isotopic signature, which is best explained by a mixture of early Reunion plume-related melts and depleted upper mantle melts. This new study provides further insight into the DVP's magma-plumbing system and suggests that it may be more complex than previously thought.
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Geochemistry & Geophysics
Lie-Meng Chen, Xie-Yan Song, Rui-Zhong Hu, Song-Yue Yu, Jun-Nian Yi, Jian Kang, Kang-Jun Huang
Summary: The study of Mg-Sr-Nd isotopic data in a mafic-ultramafic intrusion in Xiarihamu, northern Tibetan Plateau, China, reveals different isotopic signatures in various rock types, highlighting the role of mantle sources and crustal contamination in magmatic processes.
JOURNAL OF PETROLOGY
(2021)
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Geosciences, Multidisciplinary
Prashant Dhote, P. Zamarkar, D. C. Meshram, Ashish Dongre
Summary: Wehrlite xenoliths from northwest India record three events of modification in the mantle, including mantle metasomatism, phlogopite veining during rifting, and eruption of lamprophyres and mela-nephelinites. These events are related to the separation of Greater-Seychelles from India.
JOURNAL OF EARTH SYSTEM SCIENCE
(2022)
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Geochemistry & Geophysics
Sara Veysi, Seyed Mohsen Tabatabaei Manesh, Nargess Shirdashtzadeh, Jose Francisco Santos
Summary: A Permian-Triassic lamprophyric magmatism occurred as dyke and subvolcanic intrusions in the Chahriseh-Bagherabad area of Central Iran. These rocks are alkaline lamprophyres, derived from partial melting of an amphibole-garnet lherzolite mantle and enriched by the lithospheric mantle. They have undergone significant crustal contamination and fractional crystallization. The lamprophyres magmas ascended due to tensional stress during rotation and displacement of the central-eastern Iranian microcontinent.
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Geosciences, Multidisciplinary
Mo Chen, Longming Li, Tianxiang Kan, Hang Liu, Xilin Zhao, Jiahao Li, Xu Han
Summary: Late Mesozoic lamprophyres in the Chaohu area of eastern China are important for understanding the mantle source and tectonic environment during this time period. These lamprophyres can be divided into two types with different chemical characteristics, possibly due to variations in partial melting of the mantle and metasomatism caused by the rollback of the Paleo-Pacific plate during the Late Cretaceous.
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Geochemistry & Geophysics
Senel Ozdamar, Michael F. Roden, Haibo Zou, Mehmet Z. Billor, Willis Hames, Stoyan Georgiev, Istvan Dunkl
Summary: The study provides detailed mineralogical and geochemical data of Evciler and Eybek granitoids, revealing their source compositions and petrogenetic processes. These granitoids have similar compositions and formation conditions, belonging to calc-alkaline rocks. Using precise dating methods, the study unveils the Cenozoic magmatic history of these rocks in the Northwestern Anatolia.
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Geosciences, Multidisciplinary
Rehanul Haq Siddiqui, M. Qasim Jan, M. Ishaq Kakar, Andrew C. Kerr, Abdul Salam Khan, Ehsanullah Kakar
JOURNAL OF EARTH SCIENCE
(2017)
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Geochemistry & Geophysics
Louise Gall, Helen M. Williams, Alex N. Halliday, Andrew C. Kerr
GEOCHIMICA ET COSMOCHIMICA ACTA
(2017)
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Geosciences, Multidisciplinary
Chandan-Kumar Boraiaha, Annappa Ganpatrao Ugarkar, Andrew C. Kerr, Rashmi Chandan, Trivikram Manuvachari, Shivaprasad Rajanna
ARABIAN JOURNAL OF GEOSCIENCES
(2018)
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Geosciences, Multidisciplinary
Daniel Cox, Andrew C. Kerr, Alan R. Hastie, M. Ishaq Kakar
GEOLOGICAL MAGAZINE
(2019)
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Geosciences, Multidisciplinary
Gaoxue Yang, Yongjun Li, Andrew C. Kerr, Lili Tong
JOURNAL OF ASIAN EARTH SCIENCES
(2018)
Editorial Material
Geochemistry & Geophysics
Andrew C. Kerr
Article
Geochemistry & Geophysics
Aniko Batki, Elerner Pal-Molnar, M. Eva Jankovics, Andrew C. Kerr, Balazs Kiss, Gregor Markl, Adrian Heincz, Szabolcs Harangi
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Geosciences, Multidisciplinary
Robert J. Gooday, David J. Brown, Kathryn M. Goodenough, Andrew C. Kerr
BULLETIN OF VOLCANOLOGY
(2018)
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Geochemistry & Geophysics
David M. Buchs, Andrew C. Kerr, Joanna C. Brims, Juan Pablo Zapata-Villada, Tomas Correa-Restrepo, Gabriel Rodriguez
EARTH AND PLANETARY SCIENCE LETTERS
(2018)
Article
Geochemistry & Geophysics
Lin Ma, Andrew C. Kerr, Qiang Wang, Zi-Qi Jiang, Gong-Jian Tang, Jin-Hui Yang, Xiao-Ping Xia, Wan-Long Hu, Zong-Yong Yang, Peng Sun
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2019)
Article
Geochemistry & Geophysics
Lu-Lu Hao, Xiao-Yun Nan, Andrew C. Kerr, Si-Qi Li, Yuan-Bao Wu, Hao Wang, Fang Huang
Summary: The study in central China's Qinling orogen of the early Paleozoic Fushui mafic rocks indicates the likely contribution of subducted sediments and possibly also of subducted altered oceanic crust (AOC) and serpentinite based on their Mg-Ba-Sr-Nd isotope compositions.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Si-Fang Huang, Wei Wang, Andrew C. Kerr, Jun-Hong Zhao, Qing Xiong, Jian Wang
Summary: Mineral analyses from the Fuchuan ophiolite in South China suggest that it formed in a Neoproterozoic subduction system similar to the IBM forearc. Statistical analysis of global ophiolites indicates that IBM-like subduction systems may have operated since at least the late Neoproterozoic and were pervasive on Earth from around 850 million years ago. This IBM-like subduction system may have acted as the geodynamic trigger for the break-up of the Rodinia supercontinent.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geochemistry & Geophysics
Lu-Lu Hao, Qiang Wang, Andrew C. Kerr, Gang-Jian Wei, Fang Huang, Miao-Yan Zhang, Yue Qi, Lin Ma, Xue-Fei Chen, Ya-Nan Yang
Summary: Understanding the subduction and recycling of continental crust is crucial for reconstructing the long-term evolutionary history of Earth's mantle and crust. The Himalaya-Tibet orogen provides a natural laboratory for studying these processes. This study reports geochemical data of post-collisional ultrapotassic rocks in the Lhasa block, indicating a mantle source with recycled crustal components. The study contributes to our understanding of the geodynamic processes and thermal characteristics of the deep mantle in this region.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Miao-Yan Zhang, Cheng-Cheng Huang, Lu-Lu Hao, Yue Qi, Qiang Wang, Andrew C. Kerr, Gang-Jian Wei, Jie Li, Jin-Long Ma, Lin Ma, Jing-Jing Fan
Summary: The recycling of molybdenum isotopes in continental subduction zones is debated. This study re-visits the Mo isotope compositions of ultrapotassic rocks in the Himalaya-southern Tibet orogen and suggests that the light Mo isotopes in these rocks are derived from subducted Indian continental crust. The study highlights the potential of Mo-B isotopes in distinguishing between oceanic and continental subduction.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Geochemistry & Geophysics
Lin Ma, Andrew C. Kerr, Qiang Wang, Zi-Qi Jiang, Wan-Long Hu
Article
Geochemistry & Geophysics
Huichuan Liu, Alan R. Hastie, Chiara Maria Petrone
Summary: This study conducted isotope analyses on two ocean island basalt (OIB)-associated enriched mafic intrusions in the Yunnan-Burma region, and found that these rocks may have originated from the subduction recycling of marine sediments and altered oceanic crust.
Article
Geochemistry & Geophysics
L. Notini, M. Scambelluri, A. Tommasi, A. Zanetti, F. Ferri, A. Rodriguez-Vargas, E. Rampone
Summary: This study provides important petrologic information on the mantle wedge above an active subduction zone in Southern Colombia. The researchers analyzed a unique suite of rock samples and found evidence of hydration, metasomatism, and partial melting in the mantle wedge. They also observed variations in lithotypes, textures, and mineral abundance, indicating different interactions with melts and fluids. This study sheds light on the complex petrological processes occurring in the mantle wedge and contributes to our understanding of subduction zone dynamics.
Article
Geochemistry & Geophysics
Sourav Bhattacharjee, Aniket Chakrabarty, Roger H. Mitchell, Suresh Chandra Patel, Evgeniy N. Kozlov, Ekaterina N. Fomina, Monojit Dey, Supratim Pal
Summary: The Hogenakkal complex in India consists of silicate-rich and silicate-poor carbonatites and clinopyroxenites. The formation of carbonatite is influenced by silicate minerals. The carbohydrothermal mineralization in the carbonatites is induced by magma-derived fluids and interactions with the surrounding rocks.
Article
Geochemistry & Geophysics
Jia-Min Wang, Kyle Patrick Larson, Jin-Jiang Zhang, Liang Zhao, Fu-Yuan Wu
Summary: The role of collisional belts in the global carbon budget is controversial. This study reveals a previously unrecognized carbon source in the collisional orogen of the Himalayas, where metamorphism of carbonate-bearing rocks in the hanging wall resulted in significant CO2 degassing.
Article
Geochemistry & Geophysics
Joseph Martial Akame, Elson Paiva Oliveira, Vinciane Debaille, Marc Poujol, Bernhard Schulz, Dieudonnee Bisso, Fabien Humbert, Serge Parfait Koah Na Lebogo, Philmont Zo'o Zame
Summary: Archean granitoids play key roles in the crustal evolution and can provide important insights into early geologic processes.
Article
Geochemistry & Geophysics
Xiguang Huang, Jun He, Jingxin Zhao, Jingzhao Dou, Weiyong Li, Aimin Hu, Ge Liu, Yiru Ji, Fukun Chen, Shuangqing Li
Summary: This study investigates the zircon ages and whole-rock geochemical data of Late Paleozoic magmatic rocks in the Western Yunnan Tethyan belt to identify the origin and mechanism of mantle melting. The results suggest that these magmatic rocks may originate from different mantle domains that were metasomatized by slab-derived fluids and sediment-derived melts.