Results 41 to 50 of about 440 (175)

Timing of Metamorphism and Deformation in the Neoarchean Quetico Metasedimentary Belt, Superior Craton, Constrained by Garnet Trace‐Element Mapping and Lu–Hf Geochronology

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The Quetico subprovince of the Superior Province is among the largest metasedimentary belts globally and provides evidence of tectonic processes at play during the final stages of Archean cratonization. Although previous studies have shown that deformation and metamorphism of the 2.7‐Ga turbiditic protolith resulted in regional subvertical ...
Adrian G. Rehm, Antoine Godet, Doug Tinkham, Carl Guilmette, Matthijs A. Smit   +4 more
wiley   +1 more source

Rapid surface uplift and crustal flow in the Central Andes (southern Peru) controlled by lithospheric drip dynamics

Scientific Reports, 2022
The high flux magmatism, crustal shortening/extension and plateau formation in Cordilleran orogenic systems have been explained by removal of lithosphere (lower crust and the sub-arc mantle lithosphere) that develops beneath the magmatic arc and ...
Oğuz H. Göğüş, Kurt Sundell, Ebru Şengül Uluocak, Joel Saylor, Uğurcan Çetiner   +4 more
doaj   +1 more source

New Constraints on the Calabrian Arc (Central Mediterranean) Geodynamics: High‐Resolution Imaging of Lithospheric and Upper Mantle Discontinuities From P and S Receiver Functions

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract The Calabrian Arc subduction system (Central Mediterranean) is characterized by a deep and narrow (200 km) slab. Addressing the poorly understood link between shallow and deep mantle structures, we present the first high‐resolution mapping of crustal and upper mantle discontinuities across the Calabrian Arc and Southern Tyrrhenian basin.
C. Montuori, S. Monna, F. Frugoni, C. Piromallo, M. De Caro, A. Giuntini, A. Argnani   +6 more
wiley   +1 more source

DEEP STRUCTURE OF ORE DISTRICTS OF THE FENNOSCANDIAN AND UKRAINIAN SHIELDS

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2017
New interpretation of geological and seismic data has revealed a correlation of surface structures of large endogenous ore districts of the Fennoscandian and Ukrainian shields with Moho topography and local crustal inhomogeneities. As a result, models of
Николай Владимирович Шаров, Эльвира Вениаминовна Исанина, Галина Михайловна Дрогицкая, Nikolai Sharov, Elvira Isanina, Galina Drogitskaya   +5 more
doaj   +1 more source

Sensitivity of seismic wide‐angle wave‐field and first arrival times to fine scale crustal structure and moho topography [PDF]

Geophysical Research Letters, 1999
A sensitivity study of stochastic crustal and Moho models on Moho refracted first arrivals is presented. The crustal model is a self‐affine velocity structure superposed on a linear velocity gradient. The Moho is represented by a first‐order discontinuity with a topography which is also self‐affine. The sensitivity of both travel‐time and wave‐field is
Hansen, Thomas Mejer, Singh, Satish C., Jacobsen, Bo H.   +2 more
openaire   +2 more sources

A Curie Point Depth Model of the Conterminous United States Derived From a Prior‐Constrained Equivalent Source Inversion

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract The Curie Point Depth (CPD) is a key thermal boundary in the deep lithosphere and is widely used to constrain its thermal structure. However, uncertainties in magnetization and the non‐uniqueness of inversion lead to considerable inter‐study differences.
Chuanjie Chen, Zhengtao Wang, Yu Gao, Ziyi Zhu   +3 more
wiley   +1 more source

High resolution Moho topography map beneath Iberia and Northern Morocco from receiver function analysis

Tectonophysics, 2015
Crustal thickness maps at regional scales are typically compiled using estimations inferred from different geophysical datasets providing a variable coverage of the investigated area. Consequently, spurious effects related to changes in data resolution or artifacts in grid interpolation may affect significant zones of those maps.
Mancilla, Flor de Lis, Diaz, J.
openaire   +2 more sources

Multiscale Analysis of Bouguer Gravity Anomalies: Unveiling the Deep Structure of Eastern Himalayan Syntaxis Faults

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
The Eastern Himalayan Syntaxis (EHS), which is located at the southeastern edge of the Qinghai–Xizang Plateau, is a key region for understanding mountain‐building and subduction processes. Bouguer gravity anomalies derived from the Earth Gravitational Model 2008 free‐air anomaly data following topographic corrections, were analyzed.
Rui Zhang, Guiju Wu, Jian Wang, Yufei Xi, Hongtao Hao, Qinghong Long   +5 more
wiley   +1 more source

Inferring Cenozoic Cover Thickness and Bedrock Sedimentary Material in 3D From Geophysical Data Using Machine Learning Algorithms: A Case Study in the Lockington Region, Victoria, Australia

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract This study presents a supervised machine learning approach to constructing a 3D geological model for the Lockington area in Victoria, Australia, by integrating borehole observations, geophysical surveys (magnetic, gravity, and radiometric), and elevation data.
Limin Xu, Eleanor C. R. Green, Mark A. McLean   +2 more
wiley   +1 more source

Subduction Zone Magnetism: The Influence of Metamorphism and Serpentinization in the Mantle Wedge

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Subduction zone magnetic anomalies have previously been used to infer their thermal structure assuming a uniformly serpentinized mantle carries a homogeneous, isotropic magnetization. However, seismic tomography, geological observations and numerical modeling provide increasing evidence for a non‐uniformly serpentinized mantle wedge that may ...
Y. Li, P. C. Lindquist, D. Han, B. Fish, R. J. Harrison, W. McCarthy, R. M. Palin, C. B. Condit, C. I. O. Nichols   +8 more
wiley   +1 more source