Results 81 to 90 of about 90,092 (222)

Petrology, Geochemistry, and Magma Evolution Of Basaltic Rocks Of Baturraden Area, Central Java, Indonesia.

JGEET: Journal of Geoscience, Engineering, Environment and Technology
Slamet volcano is the second highest active stratovolcano in Java Island, it has a long volcanic history eruption event, the Baturraden Area is a tourism area in southern part of Slamet Volcano. Baturraden area is the part of Banyumas Regency and it took
Yogi Adi Prasetya, Akhmad Khahlil Gibran, Mochammad Aziz, Siswandi   +3 more
doaj   +1 more source

Seismic Velocity of Chlorite Under High Pressure and Temperature and Implications for the Lesser Antilles Subduction Zone

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Chlorite is thought to be one of the major water‐carrying phases in subduction zones, both within the slab and in the mantle wedge. Its presence has previously been linked to common seismological observations at subduction zones, including P and S wave anisotropy as well as high VP/VS ratios (>1.8) in the mantle wedge.
Nicholas Backhouse, Andrew Thomson, John Brodholt, Rostislav Hrubiak, Wilson Crichton, Ming Hao, Emmanuel A. Codillo, Anne Pommier, Michael J. Walter   +8 more
wiley   +1 more source

Titanium substitution mechanisms in forsterite [PDF]

, 2007
Ti K-edge X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra, together with atomic scale calculations, indicate that Ti occupies the Si site in anhydrous forsterite.
Herman, J., Walker, Andrew M., Hermann, Joerg, Walker, A., Gale, Julian D., Walker, A. M., Gale, J. D., Foran, Garry J, Berry, A. J., Berry, AJ, Foran, Garry J., Hermann, J, Foran, G., Hermann, J., Foran, G. J., O'Neill, HStC, Walker, AM, Foran, GJ, O'Neill, Hugh, Berry, A., Gale, Julian, Berry, Andrew John, Gale, Julian D, Walker, Andrew, Berry, Andrew J., O'Neill, Hugh St.C., O'Neil, H., Hermann, Jörg, O'Neill, HSt.C, Gale, JD, O'Neill, H. S.   +30 more
core   +2 more sources

Imaging the Alpine Collision With Seismic Radial Anisotropy

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract The Alpine region and the adjacent Northern Apennines (NA) and Northern Dinarides record the complex tectonic evolution associated with the collision between the Eurasian and Adriatic plates. We combine Rayleigh and Love surface waves from ambient noise and earthquake data recorded at over 3,300 seismic stations to construct a high‐resolution ...
Henrique Berger Roisenberg, Felix Eckel, Amr El‐Sharkawy, Claudio Rosenberg, Lapo Boschi, Thomas Meier, Fabio Cammarano   +6 more
wiley   +1 more source

Petrology, magma mixing, mush mobilization, and timescales of the 1874 A.D. Meiji fissure eruption of Miyakejima, Japan

Frontiers in Earth Science
To understand the processes occurring in shallow magmatic plumbing systems during the generation of effusive flank eruptions, we investigated the petrology and geochemistry of the products of the 1874 A.D. Meiji eruption of Miyakejima, Japan.
D. J. Weller, D. J. Weller, Y. Aoki, N. Geshi, C. E. Conway, S. Sakata, A. Yasuda, M. Gresse, Y. Harigane, N. Hokanishi   +9 more
doaj   +1 more source

GIA‐Induced Mantle Circulation and Surface Horizontal Motions in North America: Effects of 3D Laterally Varying Elastic Thickness and Viscosity

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract The horizontal surface motions of the Earth's crust induced by glacial isostatic adjustment (GIA) are highly sensitive to lateral variations in Earth properties. We construct 3D GIA models by incorporating both varying elastic lithospheric thickness and lateral viscosity variations in the asthenosphere in a global, compressible, self ...
Kaixuan Kang, Thorsten W. Becker
wiley   +1 more source

Reconciling Coupled Thermal‐Water Evolution Models of Earth With Observations Through Variable Regassing Efficiency

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Reconciling Earth's thermal evolution with geochemical observations remains a fundamental challenge, as parameterized convection models typically predict high present‐day Urey ratios inconsistent with geochemical estimates. Previous studies propose that if mantle water concentration varies inversely to mantle temperature, it would weaken the ...
Alexander B. Thames, Bradford J. Foley
wiley   +1 more source

The Role of Chlorate‐Driven Oxidative Weathering in Shaping Clay Deposits on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Oxidized clays and the widespread Al/Si‐over‐Fe/Mg stratigraphy on Mars imply prolonged water‐rock interactions and efficient oxidative weathering despite the largely anoxic conditions of Early Mars when most deposits formed during the climate optimum.
Jiawei Wang, Nicole M. Fernandez
wiley   +1 more source

Petrogenesis of paleocene flood basalt sequence and interlayered sedimentary successions in the Mannar Basin – Offshore Sri Lanka (Northern Equatorial margin of the Indian Ocean)

Evolving Earth
The Mannar Basin is a rift basin formed during the breakup of Gondwana, comprising sedimentary deposits from multiple cycles. Exploration for hydrocarbons has uncovered igneous sequences distributed throughout the basin's sedimentary sequences.
S. Karunarathne, P.L. Dharmapriya, W.M.H.M. Wijesinghe, M. Hellers, A.U. Wijenayake, H.M.T.G.A. Pitawala, E.K.C.W. Kularathna   +6 more
doaj   +1 more source

Deep Crustal Magma‐Water Interaction During Oceanic Core Complex Termination of the Godzilla Megamullion in the Parece Vela Basin

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract Oceanic Core Complexes (OCCs) in back‐arc basins are not as thoroughly investigated, and their termination processes remain poorly understood. The Godzilla Megamullion is the largest known ceased OCC on Earth, yet magmatic and hydrothermal records from its termination are lacking.
Han‐Tao Chi, Guo‐Liang Zhang, Ji Zhang, Chang‐Ming Lu   +3 more
wiley   +1 more source