Results 41 to 50 of about 1,920 (208)

Petrology and metamorphism of glaucophane eclogites in Changning-Menglian suture zone, Bangbing area, southeast Tibetan Plateau: An evidence for Paleo-Tethyan subduction

China Geology, 2021
: High/ultrahigh-pressure (HP/UHP) metamorphic complexes, such as eclogite and blueschist, are generally regarded as significant signature of paleo-subduction zones and paleo-suture zones.
Yu-zhen Fu, Zhi-ming Peng, Bao-di Wang, Guo-zhi Wang, Jing-feng Hu, Jun-lei Guan, Ji Zhang, Zhang Zhang, Yun-he Liu, Zou Hao   +9 more
doaj   +1 more source

Rheological, petrophysical and geometrical constraints of a subduction channel from a numerical model perspective: Insights from La Cabana Paleozoic peridotites, Coastal Cordillera of south-central Chile

, 2022
The emplacement of ultramafic blocks in accretionary complexes poses a geodynamic problem due to their negative buoyancy. In this study, we explore plausible emplacement scenarios for peridotite bodies in the Coastal Cordillera of south-central Chile by ...
Saez, Esteban, Yanez, Gonzalo, Figueroa, Ronny, Barra, Fernando, Maringue, Jose, Sanhueza, Jorge   +5 more
core   +1 more source

Chlorine isotope constraints on fluid‐rock interactions during subduction and exhumation of the Zermatt‐Saas ophiolite

Geochemistry, Geophysics, Geosystems, 2013
Chlorine isotope compositions of high‐pressure (∼2.3 GPa) serpentinite, rodingite, and hydrothermally altered oceanic crust (AOC) differ significantly from high‐ and ultrahigh‐pressure (> 3.2 GPa) metasedimentary rocks in the Aosta region, Italy ...
J. Selverstone, Z. D. Sharp
doaj   +1 more source

Mantle Flow Pattern Associated With the Patagonian Slab Window Determined From Azimuthal Anisotropy

Geophysical Research Letters, 2022
Geological processes in Southern Patagonia are affected by the Patagonian slab window, formed by the subduction of the Chile Ridge and subsequent northward migration of the Chile Triple Junction.
Walid Ben‐Mansour, Douglas A. Wiens, Hannah F. Mark, Raymond M. Russo, Andreas Richter, Eric Marderwald, Sergio Barrientos   +6 more
doaj   +1 more source

Shear‐Velocity Structure and Dynamics Beneath the Sicily Channel and Surrounding Regions of the Central Mediterranean Inferred From Seismic Surface Waves

Geochemistry, Geophysics, Geosystems, 2022
The evolution of the Sicily Channel Rift Zone (SCRZ) is thought to accommodate the regional tectonic stresses of the Calabrian subduction system. Much of the observations we have today are either limited to the surface or to the upper crust or deeper ...
M. R. Agius, F. Magrini, G. Diaferia, E. D. Kästle, F. Cammarano, C. Faccenna, F. Funiciello, M. van derMeijde   +7 more
doaj   +1 more source

Shallow Depth, Substantial Change: Fluid-Metasomatism Causes Major Compositional Modifications of Subducted Volcanics (Mariana Forearc)

Frontiers in Earth Science, 2022
Mass transfer at shallow subduction levels and its ramifications for deeper processes remain incompletely constrained. New insights are provided by ocean island basalt (OIB) clasts from the Mariana forearc that experienced subduction to up to ∼25–30 km ...
Elmar Albers, John W. Shervais, Christian T. Hansen, Yuji Ichiyama, Patricia Fryer   +4 more
doaj   +1 more source

Evaluasi awal kerentanan pelulukan/likuefaksi daerah Kendal dan sekitarnya, Jawa Tengah

Indonesian Journal on Geoscience, 2014
http://dx.doi.org/10.17014/ijog.vol2no3.20074The investigated area is a region prone to liquefaction hazards since it consists of loose, saturated Quaternary deposits. The Quaternary deposits were deposited in several sediment environments such as swamp,
Ungkap M. Lumbanbatu, Suyatman Hidayat
doaj   +1 more source

Rheology and stress in subduction zones around the aseismic/seismic transition

Progress in Earth and Planetary Science, 2018
Subduction channels are commonly occupied by deformed and metamorphosed basaltic rocks, together with clastic and pelagic sediments, which form a zone up to several kilometers thick to depths of at least 40 km.
John P. Platt, Haoran Xia, William Lamborn Schmidt   +2 more
doaj   +1 more source

Blueschist from the Mariana forearc records long-lived residence of material in the subduction channel [PDF]

, 2019
From ca. 50 Ma to present, the western Pacific plate has been subducting under the Philippine Sea plate, forming the oceanic Izu-Bonin-Mariana (IBM) subduction system.
T. Zack, D. Kelsey, Savov, I.P., Zack, T, Pabst, S., Pabst, S, Savov, IP, Kelsey, D., Tamblyn, R., Hand, M., Schmitt, AK, I.P. Savov, Schmitt, A.K., Hand, M, Morrissey, L., R. Tamblyn, M. Hand, Tamblyn, R, A.K. Schmitt, Morrissey, L, Kelsey, D, Zack, T., L. Morrissey, Zack, Thomas,, S. Pabst   +24 more
core   +1 more source

Full‐scale Shaking Table Tests on a 10‐story Steel Moment‐resisting Frame Building with Buckling‐restrained Braces

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT In February 2023, a comprehensive series of shaking table tests were conducted at the E‐Defense facility, the world's largest three‐dimensional earthquake simulator, on a full‐scale 10‐story steel moment‐resisting frame supplemented with BRBs.
Jun Fujiwara, Jialiang Jin, Jionghui Li, Tianhao Yan, Ryota Nishi, Akiko Kishida, Koichi Kajiwara, Takuya Nagae, Taichiro Okazaki, Tatsuya Asai   +9 more
wiley   +1 more source