Results 41 to 50 of about 2,652 (262)

Subduction initiation and ophiolite crust: new insights from IODP drilling [PDF]

, 2017
International Ocean Discovery Program (IODP) Expedition 352 recovered a high-fidelity record of volcanism related to subduction initiation in the Bonin fore-arc. Two sites (U1440 and U1441) located in deep water nearer to the trench recovered basalts and
Li, Hongyan, Ryan, Jeffrey G., Sakuyama, Tetsuya, Almeev, Renat R., Nelson, Wendy R., Petronotis, Katerina, Pearce, Julian A., Prytulak, Julie, Chapman, Timothy, Python, Marie, Ferré, Eric C., Carvallo, Claire, Kirchenbaur, Maria, Whattam, Scott A., Michibayashi, Katsuyoshi, Sager, William W., Morgan, Sally, Kutterolf, Steffen, Godard, Marguerite, Li, Yibing, Shervais, John W., Heaton, Daniel E., Shimizu, Kenji, Reagan, Mark K., Kurz, Walter, Robertson, Alastair H. F., Christeson, Gail L., Carvallo, C., Avery, Aaron J., Robertson, Alastair H.F.   +29 more
core   +5 more sources

Anomalous Subduction Initiation: Young Under Old Oceanic Lithosphere

Geochemistry, Geophysics, Geosystems, 2021
When subduction initiates along a transform fault, it is often interpreted that the older and therefore denser oceanic lithosphere should evolve into the downgoing plate.
Lulu Zhang, Sergio Zlotnik, Chun‐Feng Li   +2 more
doaj   +1 more source

Plume-Induced Subduction Initiation: Revisiting Models and Observations

Frontiers in Earth Science, 2021
Subduction initiation induced by a hot and buoyant mantle plume head is unique among proposed subduction initiation mechanisms because it does not require pre-existing weak zones or other forces for lithospheric collapse.
Marzieh Baes, Marzieh Baes, Robert J. Stern, Scott Whattam, Taras V. Gerya, Stephan V. Sobolev, Stephan V. Sobolev   +6 more
doaj   +1 more source

Subduction initiation at the corner of small oceanic basin

Geophysical Research Letters, 2023
Abstract In Southeast Asia, emerging subduction zones often appear to begin at the corners of small oceanic basins, which have a triangular‐indenter continent–ocean boundary geometry. To investigate the influence of a triangular corner on subduction initiation, we performed a series of three‐dimensional numerical simulations with ...
Miao Dong, Tianyao Hao, Yue Li, Jian Zhang, Gui Fang   +4 more
openaire   +2 more sources

Origin and consequences of western Mediterranean subduction, rollback, and slab segmentation

, 2014
The western Mediterranean recorded subduction rollback, slab segmentation and separation. Here we address the questions of what caused Oligocene rollback initiation, and how its subsequent evolution split up an originally coherent fore arc into circum ...
Vissers, R.L.M., Structural geology and EM, ERC-SINK: Subduction Initiation reconstructed from Neotethyan Kinematics, Mantle dynamics & theoretical geophysics, van Hinsbergen, D.J.J., Spakman, W.   +5 more
core   +1 more source

Joint Geodynamic‐Geophysical Inversion Suggests Passive Subduction and Accretion of the Ontong Java Plateau

Geophysical Research Letters, 2022
In this study, we for the first time applied a joint geodynamic‐geophysical inversion approach to oceanic plateau subduction models, and compared the subduction style and corresponding topography and Bouguer gravity of two representative subduction ...
Hao Dong, Liming Dai, Lijun Liu, Xiaodian Jiang, Sanzhong Li, Wei Gong, Liangliang Wang, Di Wang, Zhong‐Hai Li, Shengyao Yu   +9 more
doaj   +1 more source

Dataset for subduction initiation during collision-induced subduction transference

, 2020
Numerical results for 'Subduction initiation during collision-induced subduction transference: Numerical modeling and implications for the Tethyan evolution'.
Li Zhong-Hai, Zhong Xinyi (7297712), Zhong Xinyi, Li Zhong-Hai (8360568)   +3 more
core   +1 more source

Slow subduction initiation drives fast mantle upwelling and lithosphere formation

, 2021
International audienceSubduction zones are crucial features of Earth"s plate tectonics, yet subduction initiation remains enigmatic and controversial. Herein, we reappraise the timing of formation of the first fragments detached from the leading edge of ...
Kylander-Clark, Alexander, Dubacq, Benoît, Larson, Kyle, Agard, Philippe, Cottle, John, Button, Mark, Rividi, Nicolas, Bonnet, Guillaume, Soret, Mathieu   +8 more
core   +1 more source

Dynamics of intraoceanic subduction initiation: 1. Oceanic detachment fault inversion and the formation of supra-subduction zone ophiolites

, 2015
Subduction initiation is a critical link in the plate tectonic cycle. Intraoceanic subduction zones can form along transform faults and fracture zones, but how subduction nucleates parallel to mid-ocean ridges, as in e.g., the Neotethys Ocean during the ...
Wim Spakman, ERC-SINK: Subduction Initiation reconstructed from Neotethyan Kinematics, Mantle dynamics & theoretical geophysics, Maffione, Marco, Marco Maffione, NWO-VIDI: Subduction iniation reconstructed from Neotethyan kinematics (SINK): an integrated geological and numerical study of the driving forces behind plate tectonics, van Hinsbergen, Douwe J.J., Douwe J. J. van Hinsbergen, Oliver Plümper, Structural geology and EM, Morris, Antony, van Hinsbergen, Douwe J J, Maffione, Marco; id_orcid, Plümper, Oliver, Cedric Thieulot, Spakman, Wim, Thieulot, Cedric, Antony Morris   +17 more
core   +1 more source

Subduction Duration and Slab Dip

Geochemistry, Geophysics, Geosystems, 2020
The dip angles of slabs are among the clearest characteristics of subduction zones, but the factors that control them remain obscure. Here, slab dip angles and subduction parameters, including subduction duration, the nature of the overriding plate, slab
Jiashun Hu, Michael Gurnis
doaj   +1 more source