Article
Geosciences, Multidisciplinary
Yufeng Ren, Xuexiang Qi, Cheng Wei, Xufeng Liu, Fengbao Ji
Summary: This paper presents the geological and geochemical data of ophiolitic blocks in the southeast margin of the Gaoligong tectonic belt and discusses their significance in the tectonic evolution of the Meso-Tethys. The ophiolites contain mainly harzburgite peridotites, exhibiting distinct mineral chemistries and occurrences. These peridotites have experienced different geological processes and represent fragments of subcontinental lithospheric mantles.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Kent C. Condie, Robert J. Stern
Summary: Ophiolites are fragments of oceanic lithosphere that provide evidence for plate tectonics. They are recognized in the geologic record by specific rock compositions and structures. The presence of ophiolites before and after 900 Ma suggests the initiation and expansion of subduction zones. The scarcity of ophiolites older than 900 Ma may reflect preservation biases or a slower rate of plate tectonic activity during that time.
GEOSCIENCE FRONTIERS
(2023)
Article
Geochemistry & Geophysics
Kristof Porkolab, Liviu Matenco, Jasper Hupkes, Ernst Willingshofer, Jan Wijbrans, Hugo van Schrojenstein Lantman, Douwe J. J. van Hinsbergen
Summary: The high-pressure metamorphic Nevado-Filabride Complex (NFC) in the Betics mountain range of southeastern Spain plays a crucial role in understanding the geodynamics of the Western Mediterranean. By conducting a structural study and single grain fusion 40Ar/39Ar dating, researchers resolved debates related to tectonic units, emplacement of (ultra)mafic rocks, and timing of burial metamorphism. The presence of an ophiolitic melange led to a new tectonic hypothesis, which explains the subduction and exhumation processes and provides a solution for the age constraints of high pressure-low temperature metamorphism in the NFC.
Article
Geosciences, Multidisciplinary
Remi Magott, Carole Berthod, Francoise Chalot-Prat
Summary: This study deciphers the spatio-temporal chronology of tectonic processes at a slow-spreading oceanic ridge axis, involving mantle and gabbro exhumation and volcanism. Findings reveal the influence of N030 extension on volcano feeder-dykes and low-angle faults, and the N060 extension on mantle dome structure formation. Volcanoes are shifted off-axis by low-angle faults intersecting their roots, while hydrothermalism occurs simultaneously or postdates low-angle faulting.
JOURNAL OF STRUCTURAL GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Derya Guerer, Roi Granot, Douwe J. J. van Hinsbergen
Summary: Formation of a subduction zone in the Neotethys Ocean triggers a cascade of plate tectonic events. A plate kinematic model reveals that the plume-induced plate motion change leads to the formation of a new subduction zone, which perpetuates through a plate circuit.
Article
Geochemistry & Geophysics
Bassam A. Abuamarah, Fahad Alshehri, Mokhles K. Azer, Paul D. Asimow
Summary: This study reports the first investigation of rodingite in the Ess ophiolite, located in the northeast end of the Yanbu suture of the Arabian Shield. Rodingite occurs as cross-cutting dykes in serpentinite and irregular blocks in ophiolitic mélange, bounded by chloritite blackwall zones. The formation of rodingite is believed to have occurred contemporaneously with serpentinization, and the major episode of rodingitization predates the obduction of the Ess ophiolite onto the Arabian Shield. This study reveals that the protolith gabbro was transformed to rodingite through Ca-metasomatism related to adjacent serpentinized ultramafic rocks.
Article
Multidisciplinary Sciences
Jiannan Meng, Ozan Sinoplu, Zhipeng Zhou, Bulent Tokay, Timothy Kusky, Erdin Bozkurt, Lu Wang
Summary: Earthquakes are a result of planetary tectonic plate movements. The lack of understanding of the link between deep geological processes and upper crustal deformation may lead to future earthquakes and volcanic eruptions, highlighting the importance of studying to better protect infrastructure and cultures in the region.
SCIENTIFIC REPORTS
(2021)
Article
Geochemistry & Geophysics
D. Ninkabou, P. Agard, C. Nielsen, J. Smit, C. Gorini, M. Rodriguez, B. Haq, N. Chamot-Rooke, C. Weidle, C. Ducassou
Summary: The northern Oman margin plays a key role in understanding the emplacement of the Semail Ophiolite and obduction processes. Different regions along the margin show distinct geological histories.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geosciences, Multidisciplinary
Franz Neubauer, Yongjiang Liu, Yunpeng Dong, Ruihong Chang, Johann Genser, Sihua Yuan
Summary: This study summarizes the evolutionary history of the Austroalpine and Southalpine basement units in the Southern Alps and emphasizes their crucial role in the Alpine-Mediterranean mountain belts. It involves various geological processes like plate collision, ophiolite formation, magmatic activity, and rifting.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geology
Aliba Ao
Summary: This article reports the tectonic slices in the northern part of the NOC, discusses the metamorphic P-T conditions and paths of the garnet epidote amphibole schist and epidote blueschist, and highlights the role of these tectonic slices in the region.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geochemistry & Geophysics
Xia Liu, Ben-Xun Su, Phillip Gopon, Yan Xiao, Ibrahim Uysal
Summary: Compared to magmatic processes, the modification of chromite by low-temperature hydrothermal activities in ophiolites has been less studied. In this study, chromitites from the Bursa ophiolite in NW Turkey were found to be modified by hydrothermal fluids, resulting in the presence of unusual inclusions and intergrowths of magnesite, quartz, chlorite, and ferrian chromite. The infiltration of reducing and SiO2-rich serpentinizing fluids caused changes in the composition of ferrian chromite, while CO2-rich fluids led to carbonation of the serpentine matrix and the formation of interstitial magnesite and quartz. The carbon and oxygen isotope compositions of magnesite indicated that the CO2-rich fluids were derived from decarbonation of local marble and metaclastic rocks.
Article
Geology
Ranjit Nayak, Debasis Pal, Sakthi Saravanan Chinnasamy
Summary: The chromitites in the NOC are high in Cr, suggesting a boninitic parent magma and likely formation in an island arc supra-subduction zone. The minor and trace element compositions of the chromitites also support a boninitic magma source. The interactions between melt-rock and melt-melt led to the precipitation of high-Cr chromitites from boninitic melts in the NOC.
ORE GEOLOGY REVIEWS
(2021)
Article
Geochemistry & Geophysics
Sarah J. Titus, Joshua R. Davis
Summary: The net tectonic rotation method, originally developed for sedimentary rocks and lavas, was later adapted for dikes. Numerical experiments show that geometric flaws may occur in the method if dikes are not quite vertical prior to deformation, impacting the interpretations based on factors such as dike strike, dip, and paleomagnetic reference direction. Comparative analyses with alternative techniques suggest that consideration of the initial state of dikes is crucial for the application of the net tectonic rotation method.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geosciences, Multidisciplinary
Yuanlong Tan, Zongxiu Wang, Chunlin Li, Xili Yan, Nan Peng
Summary: This study elucidates six distinct tectonic episodes and their stress mechanisms in the South China region during the Mesozoic era. The research findings indicate significant changes in lithofacies palaeogeography during the late Middle Jurassic to early Late Jurassic period, suggesting a tectonic regime transformation.
GEOLOGICAL JOURNAL
(2023)
Article
Geochemistry & Geophysics
Raham Jalil, Olivier Alard, Bruce Schaefer, Liaqat Ali, Muhammad Sajid, Mohamed Zaki Khedr, Mohammad Tahir Shah, Muhammad Naveed Anjum
Summary: The Waziristan ophiolite complex (WOC) is part of the paleo-suture zone between the Indo-Pakistan plate and the Afghan microplate. It mainly consists of serpentinized dunites and serpentinites, with crosscutting pyroxenites. The study reveals that the WOC peridotites underwent a high degree of melt extraction and subsequent geochemical depletion, resembling Izu-Bonin-Mariana (IBM) forearc peridotites.
Article
Geochemistry & Geophysics
Marco Maffione, Cedric Thieulot, Douwe J. J. van Hinsbergen, Antony Morris, Oliver Plumper, Wim Spakman
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2015)
Article
Geosciences, Multidisciplinary
Antony Morris, Alastair H. F. Robertson, Mark W. Anderson, Emma Hodgson
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2016)
Article
Geosciences, Multidisciplinary
Richard J. Arculus, Osamu Ishizuka, Kara A. Bogus, Michael Gurnis, Rosemary Hickey-Vargas, Mohammed H. Aljahdali, Alexandre N. Bandini-Maeder, Andrew P. Barth, Philipp A. Brandl, Laureen Drab, Rodrigo do Monte Guerra, Morihisa Hamada, Fuqing Jiang, Kyoko Kanayama, Sev Kender, Yuki Kusano, He Li, Lorne C. Loudin, Marco Maffione, Kathleen M. Marsaglia, Anders McCarthy, Sebastien Meffre, Antony Morris, Martin Neuhaus, Ivan P. Savov, Clara Sena, Frank J. Tepley, Cees van der Land, Gene M. Yogodzinski, Zhaohui Zhang
Article
Geochemistry & Geophysics
Jarek Trela, Eric C. Ferre, Patrick Launeau, Daniel M. Bartz, Antony Morris
Article
Geology
Antony Morris, Marco Maffione
Article
Geology
Antony Morris, Matthew Meyer, Mark W. Anderson, Christopher J. MacLeod
Letter
Geosciences, Multidisciplinary
Richard J. Arculus, Osamu Ishizuka, Kara A. Bogus, Michael Gurnis, Rosemary Hickey-Vargas, Mohammed H. Aljahdali, Alexandre N. Bandini-Maeder, Andrew P. Barth, Philipp A. Brandl, Laureen Drab, Rodrigo do Monte Guerra, Morihisa Hamada, Fuqing Jiang, Kyoko Kanayama, Sev Kender, Yuki Kusano, He Li, Lorne C. Loudin, Marco Maffione, Kathleen M. Marsaglia, Anders McCarthy, Sebastien Meffre, Antony Morris, Martin Neuhaus, Ivan P. Savov, Clara Sena, Frank J. Tepley, Cees van der Land, Gene M. Yogodzinski, Zhaohui Zhang
Article
Geochemistry & Geophysics
Masako Tominaga, Maurice A. Tivey, Christopher J. MacLeod, Antony Morris, C. Johan Lissenberg, Donna J. Shillington, Vicki Ferrini
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2016)
Article
Geochemistry & Geophysics
Marco Maffione, Douwe J. J. van Hinsbergen, Giovanni I. N. O. de Gelder, Freek C. van der Goes, Antony Morris
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2017)
Article
Geology
Antony Morris, Matthew Meyer, Mark W. Anderson, Christopher J. MacLeod
Article
Geochemistry & Geophysics
J. A. Bowles, A. Morris, M. A. Tivey, I. Lascu
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2020)
Article
Geochemistry & Geophysics
Anita Di Chiara, Antony Morris, Mark W. Anderson, Luca Menegon, Alain Tremblay
GEOPHYSICAL JOURNAL INTERNATIONAL
(2020)
Article
Geochemistry & Geophysics
Marco Maffione, Antony Morris
Summary: The Philippine Sea Plate in the West Pacific is a unique natural laboratory for studying subduction dynamics and the evolution of upper plate magmatism. Through the International Ocean Discovery Program Expedition 351, researchers obtained cores from Site U1438, providing valuable information on the volcanic events in the region.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Geochemistry & Geophysics
Antony Morris, Mark W. Anderson, Ahmed Omer, Marco Maffione, Douwe J. J. van Hinsbergen
EARTH AND PLANETARY SCIENCE LETTERS
(2017)
Article
Geochemistry & Geophysics
Marco Maffione, Antony Morris
EARTH AND PLANETARY SCIENCE LETTERS
(2017)