Results 41 to 50 of about 30,385 (227)

The First 10 Million Years of Rear‐Arc Magmas Following Backarc Basin Formation Behind the Izu Arc

Geochemistry, Geophysics, Geosystems, 2020
IODP Site U1437 is located in the Izu rear‐arc region, approximately 330 km west of the Izu‐Bonin trench axis. The oldest four units (Units IV through Unit VII) include volcaniclastic sediment and in situ hyaloclastites.
T. Miyazaki, J. B. Gill, C. Hamelin, S. M. DeBari, T. Sato, Y. Tamura, J.‐I. Kimura, B. S. Vaglarov, Q. Chang, R. Senda, S. Haraguchi   +10 more
doaj   +1 more source

Mesozoic–Cenozoic Thermochronology of the Tarim–Southern Tianshan System, NW China

Geological Journal, EarlyView.
Tectonothermal history of the Tarim–Southern Tianshan system compared with the major tectonic events at far‐field plate margins. ABSTRACT The Tarim Basin, an oil‐bearing basin in northwest China, is tectonically and sedimentologically linked to the Southern Tianshan Orogenic Belt.
Shuangfeng Zhao, Wen Chen, Jingbo Sun, Ze Shen, Jie Zhang   +4 more
wiley   +1 more source

Unveiling the Crystal Structure of Sanidine: A Polarized Raman and Ab Initio Simulation Exploration

Journal of Raman Spectroscopy, EarlyView.
This study combines polarized Raman spectroscopy and ab initio calculations to assign theoretical vibrational modes to observed spectra. Polarized Raman spectra were collected in six geometries (40–1200 cm−1). Theoretical predictions via DFT show good agreement with experiments, though some discrepancies point to influences like trace elements and ...
Michele Cassetta, Luca Bellucci, Sabrina Nazzareni, Francesco Vetere, Marco Giarola, Gino Mariotto   +5 more
wiley   +1 more source

Horizontal mantle flow controls subduction dynamics

Scientific Reports, 2017
It is generally accepted that subduction is driven by downgoing-plate negative buoyancy. Yet plate age –the main control on buoyancy– exhibits little correlation with most of the present-day subduction velocities and slab dips. “West”-directed subduction
E. Ficini, L. Dal Zilio, C. Doglioni, T. V. Gerya   +3 more
doaj   +1 more source

New Advances in the Deep Structure of the Pamir Plateau: A Review

Acta Geologica Sinica - English Edition, EarlyView.
Abstract The Pamir Plateau is situated at the northwestern edge of the India–Eurasia Plate collision zone, making it a key region for studying continental collision and plateau uplift. The deep structure and dynamic processes of this region have long been of great scientific interest.
Feng LIANG, Davlatkhudzha MURODOV, Obidjon KODIROV, Lihua FANG, Hong XIAO, Xiaoping MA, Guoming LEI, Jiayong YAN, Nuo LI, Meng WANG, Maksatbek SATYBAEV, Syed Tallataf Hussain SHAH, Umair Khan JADOON   +12 more
wiley   +1 more source

Palaeoenvironmental changes recorded at the Velika Vrbica loess‐palaeosol sequence, Wallachian Basin, during MIS 3–MIS 1

Boreas, EarlyView.
This study presents a detailed investigation of the Velika Vrbica loess‐palaeosol sequence, situated in the Wallachian Basin of northeastern Serbia, with the aim to reconstruct palaeoenvironmental changes spanning Marine Isotope Stages (MIS) 3 to 1. Using optically stimulated luminescence (OSL) dating, low field magnetic susceptibility (χlf), and mass ...
Zoran M. Perić, Cathal S. Ryan, Warren Thompson, Milica G. Radaković, Petar Krsmanović, Helena Alexanderson, Slobodan B. Marković   +6 more
wiley   +1 more source

Tomographic Imaging of Slab Segmentation and Deformation in the Greater Antilles

Geochemistry, Geophysics, Geosystems, 2018
We present a new tomographic P wave model of the upper mantle in the east Caribbean region. The model was built using 3‐D finite frequency sensitivity kernels and ~20,000 teleseismic P and PP traveltime residuals from 535 events recorded across 130 ...
Cooper W. Harris, Meghan S. Miller, Robert W. Porritt   +2 more
doaj   +1 more source

Beachrock formation influenced by co‐seismic deformation and relative sea‐level changes during the Holocene near the Gulf of Saros, Türkiye (NE Aegean Sea)

Boreas, EarlyView.
This is the first proof of beachrock found on the nearshore of the Gulf of Saros. Beachrock generation was influenced by tectonic activity, geomorphological processes, and sedimentation. The Late Holocene beachrock deposits were altered by co‐seismic deformation.
Ufuk Tari
wiley   +1 more source

Rock‐buffered versus fluid‐buffered geochemistry of structurally controlled, hydrothermal dolomite: Insights from the Sichuan Basin, China

Sedimentology, EarlyView.
ABSTRACT Structurally controlled hydrothermal dolomitization, commonly driven by high‐pressure, high‐temperature fluid–rock reactions, offers insights into the tectonic evolution of sedimentary basins and the geochemical composition of their diagenetic fluids.
Huachuan Jiang, Jintong Liang, Karem Azmy, Cole A. McCormick, Taiyuan Fan, Xiaotian Li, Fei Huo, Huaguo Wen   +7 more
wiley   +1 more source

Ophiolites in the Central Asian Orogenic Belt record Cambrian subduction initiation processes

Communications Earth & Environment
Subduction initiation remains elusive because no present example exists. Ophiolites formed over nascent subduction zones in the past provide the key to constraining the processes of subduction initiation.
Mingshuai Zhu, Daniel Pastor–Galán, Matthijs A. Smit, Laicheng Miao, Miao Dong, Fuqin Zhang, Dorjgochoo Sanchir, Ariuntsetseg Ganbat, Chenghao Liu, Ye Luo, Shun Li   +10 more
doaj   +1 more source