Article
Geosciences, Multidisciplinary
Irfan Maqbool Bhat, Talat Ahmad, D. V. Subba Rao, Srinivasan Balakrishnan, N. V. Chalapathi Rao
Summary: The study of PGE geochemistry of mantle peridotites and Nd-isotope geochemistry of arc-related mafic rocks in the Indus Suture Zone (ISZ) in western Ladakh shows distinct characteristics indicating interaction between subduction zone tectonic settings and arc environments.
GEOSCIENCE FRONTIERS
(2021)
Article
Geochemistry & Geophysics
Ming Lei, Jianlin Chen, Jifeng Xu, Tiannan Yang, Zhiming Yang
Summary: The Eocene magmatic flare-up in NW Iran provides insights into the tectonic evolution of the region. The Ahar trachyandesites, formed during the Eocene, likely originated from an enriched mantle source due to the interaction between mantle wedge peridotite and oceanic slab-derived components during the subduction of the Neo-Tethys Oceanic slab along the Zagros segment. These rocks represent a record of crust-mantle interaction in an oceanic subduction channel.
Article
Geochemistry & Geophysics
M. Jerram, P. Bonnand, J. Harvey, D. Ionov, A. N. Halliday
Summary: Chromium isotope compositions of mantle-derived xenoliths have been determined, showing a range of -0.33% to 0.43%. The process of partial melting is proposed to alter the chromium isotope composition of the mantle residue, possibly related to interactions with low degree partial melts.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geochemistry & Geophysics
Wei Dan, Qiang Wang, J. Brendan Murphy, Xiu-Zheng Zhang, Yi-Gang Xu, William M. White, Zi-Qi Jiang, Quan Ou, Lu-Lu Hao, Yue Qi
Summary: The northward drift of the Cimmerian microcontinents and the opening of the Neo-Tethys Ocean in the Early Permian were accompanied by the emplacement of the Qiangtang-Panjal large igneous province (QP-LIP). New age data suggest that the duration of QP-LIP emplacement was shorter than previously believed, possibly due to the arrival of a mantle plume and slab pull leading to the northward drifting of terranes from northern Gondwana.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geochemistry & Geophysics
Kei Shimizu, Alberto E. Saal, Erik H. Hauri, John M. Sinton, Philip E. Janney, Nobuo Geshi, Roger Hekinian
Summary: The CO2/Ba ratio of the Pacific E-MORB mantle source in the southern East Pacific Rise is estimated to be 177, indicating a CO2 content of approximately 391 ppm. This high CO2/Ba ratio may be attributed to fractionation during an earlier melting event or the recycling of oceanic lithosphere or enriched continental lithospheric mantle into the convecting mantle.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Review
Geology
Susan Jamei, Mansour Ghorbani, Ian S. Williams, Mohsen Moayyed
Summary: The Late Palaeozoic rock associations in Iran, particularly A-type igneous rocks, provide valuable information for reconstructing the evolutionary history of the Tethyan oceans, including their formation ages, magma activities, composition, and formation processes. Additionally, the magmatic rocks in Iran define a trend parallel to the ridge separating Neo-Tethys from the Iranian plate, indicating the separation of the Cimmerian terranes from northern Gondwana and their northward drift beginning in the Late Devonian to Early Carboniferous periods.
INTERNATIONAL GEOLOGY REVIEW
(2021)
Article
Geosciences, Multidisciplinary
Ye Tian, Feng Huang, Jifeng Xu, Baodi Wang, Han Liu, Yunchuan Zeng, Xijun Liu, Changqi Yang, Hongxia Yu, Yaqian Wen, Zhao Zhang, Liying Zhang, Yutong Zhang
Summary: Southern Tibet is a key region for studying the magmatism during the collision between India and Asia. The Lianxiang gabbros provide an ideal opportunity to investigate the initial slab break-off, with geochemical characteristics suggesting a shallow asthenospheric mantle source. N-MORB-type rocks are proposed to reflect the tearing of the Neo-Tethyan slab, with variations in the process of slab break-off between western and eastern southern Tibet possibly due to different lithospheric structures and compositions.
GEOLOGICAL JOURNAL
(2021)
Article
Geology
Xia QunKe, Liu Jia, Zhang BaoHua, Li Pei, Gu XiaoYan, Huan Chen
Summary: Through investigating water in natural samples, the solubility of water in mantle minerals, and geophysical surveys on the deep mantle structure, it has been discovered that water preserved in the deep mantle can be comparable to the present ocean. Water not only affects the physical properties of minerals, but also plays a role in the production of mafic magmatism from different geological backgrounds.
ACTA PETROLOGICA SINICA
(2022)
Article
Geochemistry & Geophysics
Tong Liu, Fu-Yuan Wu, Chuan-Zhou Liu, Di-Cheng Zhu, Yin-Zheng Lin
Summary: The asthenosphere beneath ancient and modern oceans is heterogeneous due to the recycling of old mantle domains and subducted oceanic crust and sediments. The mantle peridotites from the Kop Mountain ophiolite in the Neo-Tethys underwent ancient melt extraction and Jurassic melt metasomatism, representing recycled ancient sub-oceanic mantle domains. The Os isotopic distribution of Neo-Tethyan ophiolites is similar to global abyssal peridotites, indicating a highly heterogeneous asthenosphere with various mantle inputs.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Review
Geology
Y. Yilmaz, E. Yigitbas
Summary: The Eastern Pontides are the northeasternmost component of the Anatolian orogen and are closely associated with the evolution of the Ankara-Erzincan Suture. It records the geological events from the opening to the elimination of the surrounding oceans. The Pontides experienced four collisional events throughout its development, including forearc-arc collision and continent-arc collision.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geochemistry & Geophysics
Zhen Zhang, Tong Liu, Chuan-Zhou Liu, Chang Zhang, Fu-Yuan Wu
Summary: The mantle peridotites from the Zhagabu ophiolite in Tibet show highly heterogeneous geochemical compositions, which may provide important insights into the evolutionary history of the Neo-Tethys oceanic lithosphere and the dynamics of the mantle. These peridotites represent a valuable window for studying the tectonic evolution of the Neo-Tethys Ocean.
Article
Geochemistry & Geophysics
Valerie Payre, Rajdeep Dasgupta
Summary: Phosphorus enrichment in the martian mantle has important consequences on the composition and mineralogy of the crust and upper mantle. Experimental results show that the addition of phosphorus increases the abundance of orthopyroxene while decreasing the proportion of olivine in the residual minerals. This leads to lower SiO2 concentrations in the near-solidus melt and elevated CaO/Al2O3 ratio and FeO* concentration in mantle-derived melts.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geochemistry & Geophysics
Michael Lara, Rajdeep Dasgupta
Summary: The extent of CO2 transfer in subduction zones and its impact on mantle wedge and arc magma source regions are still debated. Experimental results show that the upper limit of XCO2 in fluids inducing melting in mantle wedges is approximately 0.10 at 2-4 GPa. Mass balance modeling suggests that a significant portion (34-86%) of CO2 entering subduction zones bypasses the sub-arc melt generation zone and is subducted into the convecting mantle.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
A. M. Celal Sengor, Demir Altiner, Cengiz Zabci, Guersel Sunal, Nalan Lom, Esref Aylan, Tayfun Oner
Summary: The Cimmerian Continent is a narrow continental strip that rifted from the Gondwana-Land margin during the Permian and collided with the Laurasian margin sometime between the latest Triassic and the late Jurassic. It did not leave Gondwana-Land in one piece, but separated into several parts, with the northern part forming a large island arc type ribbon continent. The northern margin of the Cimmerian Continent is of Pacific-type and not Atlantic-type. The continent had a serpentine motion as it traversed the Tethyan realm and had a complex internal tectonics.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geography, Physical
Zhiyong Zhang, Thomas Zack, Barry Kohn, Marco G. Malusa, Lin Wu, Mahnaz Rezaeian, Nan Wang, Dunfeng Xiang, Chao Guo, Rasoul Esmaeili, Bo Wan, Wenjiao Xiao
Summary: The intrusion rocks in northwest Iran provide an ideal opportunity for studying geothermochronology and recording the tectonic evolution of the Tethys Ocean. Multiple magmatic events during the Late Carboniferous, mid-Cretaceous, and middle Eocene suggest subduction and ridge subduction processes. The results also highlight the significance of subduction and collision in post-magmatic cooling and exhumation processes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geochemistry & Geophysics
Edward A. du Bray, David A. John, Brian L. Cousens, Leslie A. Hayden, Peter G. Vikre
AMERICAN MINERALOGIST
(2016)
Article
Geosciences, Multidisciplinary
Nicole M. B. Williamson, Luke Ootes, Robert H. Rainbird, Jean H. Bedard, Brian Cousens
BULLETIN OF VOLCANOLOGY
(2016)
Article
Geochemistry & Geophysics
John William Jamieson, Mark D. Hannington, Margaret K. Tivey, Thor Hansteen, Nicole M. -B. Williamson, Margaret Stewart, Jan Fietzke, David Butterfield, Matthias Frische, Leigh Allen, Brian Cousens, Julia Langer
GEOCHIMICA ET COSMOCHIMICA ACTA
(2016)
Article
Geology
Taylor M. Kilian, Kevin R. Chamberlain, David A. D. Evans, Wouter Bleeker, Brian L. Cousens
Article
Geochemistry & Geophysics
Brian Cousens, Dominique Weis, Marc Constantin, Steve Scott
GEOCHIMICA ET COSMOCHIMICA ACTA
(2017)
Editorial Material
Geology
Kevin R. Chamberlain, Taylor M. Kilian, David A. D. Evans, Wouter Bleeker, Brian L. Cousens
Article
Geosciences, Multidisciplinary
Abdelhakim El Bahat, Moha Ikenne, Brian Cousens, Ulf Soderlund, Richard Ernst, Martin B. Klausen, Nasrrddine Youbi
JOURNAL OF AFRICAN EARTH SCIENCES
(2017)
Article
Geosciences, Multidisciplinary
Bouchra Baidada, Brian Cousens, Abdelkhalek Alansari, Abderrahmane Soulaimani, Pierre Barbey, Said Ilmen, Moha Ikenne
JOURNAL OF AFRICAN EARTH SCIENCES
(2017)
Article
Geochemistry & Geophysics
Cole G. Kingsbury, Sandra L. Kamo, Richard E. Ernst, Ulf Soderlund, Brian L. Cousens
JOURNAL OF GEODYNAMICS
(2018)
Article
Geochemistry & Geophysics
C. Rogers, S. L. Kamo, U. Soderlund, M. A. Hamilton, R. E. Ernst, B. Cousens, S. S. Harlan, C. E. Wade, Dj. Thorkelson
Article
Geochemistry & Geophysics
N. Kastek, R. E. Ernst, B. L. Cousens, S. L. Kamo, W. Bleeker, U. Soderlund, W. R. A. Baragar, P. Sylvester
Review
Geosciences, Multidisciplinary
Brian L. Cousens, Christopher D. Henry, Christopher Stevens, Susan Varve, David A. John, Stacey Wetmore
EARTH-SCIENCE REVIEWS
(2019)
Article
Geosciences, Multidisciplinary
Brandon Bray, John Stix, Brian Cousens
BULLETIN OF VOLCANOLOGY
(2017)
Article
Geosciences, Multidisciplinary
Luke Ootes, Valerie A. Jackson, William J. Davis, Venessa Bennett, Leanne Smar, Brian L. Cousens
CANADIAN JOURNAL OF EARTH SCIENCES
(2017)
Article
Geosciences, Multidisciplinary
Cole G. Kingsbury, Richard E. Ernst, Brian L. Cousens, Marie-Claude Williamson
NORWEGIAN JOURNAL OF GEOLOGY
(2016)