Results 61 to 70 of about 7,051 (253)

Resistivity Structure of the Alabama‐Oklahoma Lineament and Mississippi Embayment: Insights Into Crustal Weakness, Heat Flow, and Seismicity of the Region

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract The Alabama–Oklahoma Lineament (AOL) is a major crustal boundary that intersects the Mississippi Embayment (ME) and may influence intraplate deformation in the southern United States. We present the first regional magnetotelluric (MT) resistivity models across the AOL–ME system using EarthScope data and two‐dimensional inversion. All southwest–
Kaushik Sarker, Chris Cramer
wiley   +1 more source

The principal component analysis for studying polymetasomatic processes in the contacts of carbonatitic complexes of the Kola Peninsula [PDF]

Vestnik MGTU, 2015
The paper presents a statistical analysis of chemical compositions sampling of rocks from contact aureole of the alkaline-ultrabasic carbonatitic massif Ozernaya Varaka by the principal component method.
Kozlov E.N.
doaj  

Thermodynamic Constraints on H2 Production and Habitability From Mg‐Rich Serpentinites as Mars Analogs

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Serpentinization produces hydrogen and methane through abiotic water‐rock interactions, potentially supporting chemotrophic life in planetary subsurface environments. Serpentine deposits in the Martian Noachian landscapes of Nili Fossae and the Southern Highlands have been considered as potential paleo‐habitable zones. However, the geochemical
Devan M. Nisson, Mohit Melwani Daswani, Emmy B. Hughes, Scott M. Perl, Varsha M. Nair, H. M. T. G. A. Pitawala, Sanjeewa P. K. Malaviarachchi, P. L. Dharmapriya, Meththika Vithanage, Amit Basu Sarbadhikai, Francis Rivera‐Hernández, Suniti Karunatillake   +11 more
wiley   +1 more source

Listvenites: new insights of a hydrothermal system fossilized in Cerro Matoso peridotites, Montelíbano, Córdoba Department, Colombia

Boletín Geológico, 2020
The products of metasomatic alteration (e.g., carbonation) of peridotites are called listvenites. Based on a description of the outcrops in the laterite deposit at Cerro Matoso located in the NW of Colombia, the mineralogical composition confirmed by ...
Andrés Castrillón, Javier Guerrero
doaj   +1 more source

The structure and petrology of the Cnoc nan Cuilean Intrusion, Loch Loyal Syenite Complex, NW Scotland [PDF]

, 2013
In NW Scotland, several alkaline intrusive complexes of Silurian age intrude the Caledonian orogenic front. The most northerly is the Loch Loyal Syenite Complex, which is divided into three separate intrusions (Ben Loyal, Beinn Stumanadh and Cnoc nan ...
Goodenough, Kathryn M., Gunn, A. Gus, Hughes, Hannah S.R., Lacinska, Alicja, McCormac, Michael, Walters, Abigail S.   +5 more
core   +3 more sources

Quantitative Assessment of Peridotite Tectonomagmatic Affinities Using Compositional Data Analysis and Explainable Machine Learning

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Peridotites record the compositional evolution of the lithospheric and asthenospheric mantle across plume‐related lithospheres, convergent margins, and rift‐related volcanic environments; however, their tectonomagmatic affinities are commonly difficult to resolve using traditional low‐dimensional geochemical discrimination diagrams.
Swarnendu Roy, Koushik Sen
wiley   +1 more source

Trace-element abundances in the shallow lithospheric mantle of the North Atlantic Craton margin: implications for melting and metasomatism beneath Northern Scotland [PDF]

, 2015
Bulk rock geochemistry and major- and trace-element compositions of clinopyroxene have been determined for three suites of peridotitic mantle xenoliths from the North Atlantic Craton (NAC) in northern Scotland, to establish the magmatic and metasomatic ...
Bonadiman, Brian G. J. Upton, Goodenough, Green, Hannah S. R. Hughes, Hilary Downes, Hunter, Iain McDonald, John W. Faithfull, Kirstein, Long, Park, Pearce, Rollinson, Saunders, Silver, Tanner, Tompkins, Upton   +18 more
core   +4 more sources

Climax of Late Paleoproterozoic Rift‐Related Magmatism in the Columbia Supercontinent: Insights From a 1.77–1.76 Ga Large Igneous Province of the Dunhuang Block, Northwest China

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract Widespread mafic magmatism at ca. 1.8–1.7 Ga across fragments of the Columbia supercontinent records a transition in the Earth's supercontinent cycle. The paleogeographic position of the Dunhuang Block in northwestern China within Columbia, and its role in this tectonic reorganization, remain controversial.
Masumeh Sargazi, Chuan‐Lin Zhang, Xian‐Tao Ye, Zhi‐Hao Song, Hong‐Ran Wang   +4 more
wiley   +1 more source

Application of Machine Learning to Hydrothermal System Analysis: Geochemical Insights from the Bektakari–Bneli Khevi Ore Knot, Southern Georgia

Bulletin of the Mineral Research and Exploration
This study integrates geochemical, statistical, and machine learning methods to investigate hydrothermal systems and mineralization processes within southern Georgia's Bektakari–Bnelikhevi ore knot.
Giorgi Mindiashvili, David Bluashvili, Tornike Lipartia, Nino Jafaridze, Keti Benashvili   +4 more
doaj   +1 more source

Epidote Records (De)hydration From the Seafloor Through Subduction and Underplating: Implications for Subduction Zone Fluid Budgets and Slow Slip

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract When, where, and how much fluid is released from subducting oceanic crust control deformation, element cycling, and magmatism in subduction zones. However, the palimpsest of tectonometamorphic processes in the exhumed rock record complicates the relation of geologic observations to geodynamic models of subduction fluid sources and transport ...
P. C. Lindquist, C. B. Condit, W. F. Hoover, V. E. Guevara, G. S. Epstein   +4 more
wiley   +1 more source