Results 41 to 50 of about 273,837 (164)

Multistage Evolution and Inheritance in a Magma‐Poor Conjugate Margin: Insights From Serpentinized Peridotites of the Newfoundland Margin (ODP Hole 1277A)

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract The nature of mantle sections exhumed at magma‐poor rifted margins remains poorly constrained, largely because direct sampling of mantle in modern passive margins is exceptionally rare. The Iberia–Newfoundland system is unique in providing drilled mantle rocks on both conjugate margins, offering an unprecedented glimpse into mantle ...
A. Secchiari, M. Godard, A. Montanini
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  

BaSIC: A Bayesian Inversion Model for Basalt Source Investigation and Characterization

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract We present BaSIC: Basalt Source Investigation and Characterization, an open‐source Python based Bayesian inversion method to constrain the source mineralogy of basalts. Using bulk rock geochemistry, the model takes the averages and standard deviations of six elemental ratios (Mn/Fe, Zn/Fe, Mn/Zn, Sc/Zn, Co/Fe, and Ga/Sc) for a given basalt ...
E. H. Cunningham, S. Lambart, E. L. Brown   +2 more
wiley   +1 more source

A specialized topaz-bearing rapakivi granite and associated mineralized greisen in the Ahvenisto complex, SE Finland [PDF]

Bulletin of the Geological Society of Finland, 1991
The Ahvenisto rapakivi complex is a satellite northwest of the large Wiborg rapakivi batholith in Southeastern Finland. The rapakivi rocks are surrounded by rapakivi-age gabbros, anorthosites, monzodiorites and diabases.
P. Edén
doaj   +1 more source

Rodingite‐Derived Melt as a Recipe for Ultra‐Calcic Magmas

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Rodingite is a high‐CaO rock formed by Ca‐rich fluid metasomatism on mafic protoliths. It typically occurs within serpentinite and represents an often‐overlooked constituent of the altered oceanic lithosphere that may be subducted into the mantle.
Mingdi Gao, Yu Wang, Shi‐Dong Guan, Yi‐Xiang Chen, Chao‐Yang Guo, Yi‐Gang Xu   +5 more
wiley   +1 more source

Geochemical and Geological Investigation of Skarn‐Type Pb–Zn Mineralization in Hastanetepe (Balya‐Balıkesir, Türkiye): An Approach Based on Fluid Inclusions, Sulphur Isotopes and Geochemical Data

Geological Journal, Volume 61, Issue 9, Page 2940-2957, September 2026.
Integrated petrographic, mineralogical and geochemical data from the Hastanetepe Pb–Zn deposit (Balya, Türkiye) reveal multi‐stage hydrothermal alteration and a magmatic sulphur source. Fluid inclusion and sulphur isotope results indicate a complex fluid evolution responsible for skarn‐type Pb–Zn mineralization along limestone–dacite contacts ...
Esra Ünal‐Çakır
wiley   +1 more source

Raman spectroscopy, a non-destructive solution to the study of glass and its alteration [PDF]

, 2008
This paper presents the potential of Raman spectroscopy, a non-destructive technique which can be applied in-situ, for the analyses of glass and their alteration. Recent analytical developments are summarised for different glass composition and practical
Verney-Carron, A, Robinet, L, Neff, D, Tate, Jim, Etcheverry, M-P, Pagès-Camagna, S, Bouquillon, A   +6 more
core  

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

MINERALOGICAL, GEOCHEMICAL AND RADIOACTIVE ASPECTS OF NUWEIBI BASEMENT ROCKS, CENTRAL EASTERN DESERT, EGYPT [PDF]

Delta Journal of Science, 2010
Nuweibi area is situated in the Central Eastern Desert, Egypt, covers an area of about 135km2. The field observations and the detailed petrographic study revealed that the mapped area is distinguished into several rock units: serpentinites, metasediments,
Sameh M. Mansour, Mohamed A. Wetait, Salah S. El-Balakssy   +2 more
doaj   +1 more source

Composition and Provenance of Victoria Group Sandstones in Southern North Victoria Land, Antarctica

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
Three distinct source areas contributed to sandstones of the Victoria Group within the Transantarctic Basin in southern North Victoria Land. During the Permian, quartzose sandstones were derived from erosion of the local Ross Orogen, likely from an uplifted swell in the area of today's Ross Sea, the Ross High.
Martin Elsner, Robert Schöner, Reinhard Gaupp, Andreas Kronz, Benjamin Bomfleur, Joerg W. Schneider, Lothar G. Viereck   +6 more
wiley   +1 more source