Results 101 to 110 of about 2,652 (262)

Neogene plate tectonic reconstructions and geodynamics of North Island sedimentary basins: Implications for the petroleum systems

, 2006
Although the modern Australia-Pacific plate boundary through New Zealand is relatively straight, there have been significant changes in its geometry during the Neogene. Within the North Island sector there has been a fundamental transition from an Alpine
Kamp, Peter J.J., Furlong, Kevin P.
core  

Forearc Variability and the Geochemical Diversity of Suprasubduction Zone Ophiolites: Insights From the Leka Ophiolite Complex, Norway

Geochemistry, Geophysics, Geosystems
New whole‐rock major and trace element geochemistry from the Leka Ophiolite Complex in Norway is presented and compared to the geochemical evolution and proposed tectonomagmatic processes recorded in the Izu‐Bonin‐Mariana system.
Naomi A. Becker, Wendy R. Nelson, Joseph F. Browning‐Hanson, Freya R. George, James L. Crowley, Daniel R. Viete   +5 more
doaj   +1 more source

BONINITES THROUGH TIME AND SPACE: PETROGENESIS AND GEODYNAMIC SETTINGS

Геодинамика и тектонофизика, 2016
The article provides an overview of boninitic magmatism occurrences in space and time and shows that the boninite rock series were generated through the entire geological history of the Earth.
A. A. Shchipansky
doaj   +1 more source

A Giant Impact Origin for the First Subduction on Earth

Geophysical Research Letters
Hadean zircons provide a potential record of Earth's earliest subduction 4.3 billion years ago. It remains enigmatic how subduction could be initiated so soon after the presumably Moon‐forming giant impact (MGI).
Qian Yuan, Michael Gurnis, Paul D. Asimow, Yida Li   +3 more
doaj   +1 more source

From subduction to collision in the northern Tibetan plateau : evidence from the early Silurian clastic rocks, northwestern China [PDF]

, 2012
The Qilian Orogen records early Paleozoic collisional suturing of the Qaidam Block and the Central Qilian Block to the North China Craton. The composition and U-Pb age of detrital zircons and the composition of Cr-spinels from the Early Silurian ...
Jianghai Yang, Peter A. Cawood, Yuansheng Du, Yajun Xu, Yang, Jianghai, Xu, Yajun, Cawood, Peter A., Du, Yuansheng   +7 more
core   +1 more source

An analytical study of initial subduction of the plate based on a bibliometric analysis method spanning 1995–2024

Frontiers in Earth Science
Subduction zones constitute a fundamental element of plate tectonic theory, with the initial subduction phase representing a critical but poorly constrained transitional stage in the development of mature subduction systems. Using CiteSpace and VOSviewer
Yongqiang Zhang, Nan Jiang, Kexin Liu
doaj   +1 more source

Thermal softening induced subduction initiation at a passive margin

, 2020
International audienceWe present 2-D numerical simulations of convergence at a hyperextended passive margin with exhumed subcontinental mantle. We consider viscoelasto-plastic deformation, heat transfer and thermomechanical coupling by shear heating and ...
Candioti, Lorenzo, Schmalholz, Stefan,, Kiss, Daniel, Duretz, Thibault, Schmalholz, Stefan, M   +4 more
core   +1 more source

Comment on ‘Near‐Synchronous Cambrian Evolution of the Transbrasiliano‐Kandi‐4°50′ Shear Zone in South America and Africa’

Terra Nova, EarlyView.
Sérgio P. Neves, Alain Vauchez
wiley   +1 more source

Temporal evolution of mantle wedge oxygen fugacity during subduction initiation

, 2015
Arc basalts have a higher proportion of Fe in an oxidized state (Fe^(3+)) relative to Fe^(2+) compared to mid-oceanic ridge basalts (MORBs), likely because slab-derived fluids oxidize the mantle wedge where subduction zone magmas originate. Yet, the time
Kelley, Katherine A., Brounce, Maryjo, Cottrell, Elizabeth, Reagan, Mark K.   +3 more
core   +1 more source

Origin of Philippine Sea Basins During Subduction Initiation in the Western Pacific

Geochemistry, Geophysics, Geosystems
Understanding the age and dynamics of the overriding plates allows an assessment of competing subduction initiation hypotheses. The Izu‐Bonin‐Mariana margin in the Western Pacific is a key example of initiation and hence it is important to constrain the ...
Osamu Ishizuka, Kenichiro Tani, Rex N. Taylor, Susumu Umino, Izumi Sakamoto, Yuka Yokoyama, Itaru Ogitsu, Gen Shimoda, Yumiko Harigane, Taichi Sato, Yasuhiko Ohara, Christopher Conway, Americus Perez, Masakazu Fujii, Yuki Kusano, Masatoshi Yagi, Yoshihiko Tamura   +16 more
doaj   +1 more source