Results 61 to 70 of about 7,282 (216)

Global Cooling Driving the Increase in Erosion Rates Across the Himalaya Since the Quaternary

open access: yesGeophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Late Cenozoic global cooling is well documented, yet its impact on erosion rates in active mountain belts, particularly after the onset of Quaternary glaciation, remain contentious. This ambiguity partially stems from the potential methodological biases in erosion rate quantification, particularly in the Himalaya, where recent studies report ...
Dongxu Cai   +9 more
wiley   +1 more source

Khanneshin - the Afghan carbonatite volcano, discovered in the office

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2017
The pétrographie and mineralogical laboratory study of the rock samples and the analysis of the geological setting in the sites of their collection (South Afghanistan) allowed suggesting the presence of the carbonatite volcano there.
B. Ya. Vikhter
doaj   +1 more source

Emplacement of Hybrid Continental‐Oceanic Arc Terranes Without Collision: The Devonian Calliope Arc (New England Orogen, Australia)

open access: yesTectonics, Volume 45, Issue 7, July 2026.
Abstract The accretion of allochthonous provinces, derived from oceanic plates, has traditionally been considered an important contributor to continental growth. However, increasing evidence shows that some oceanic terranes (e.g., island arcs) are not “exotic,” as suggested by the presence of continental‐derived sedimentary provenance.
Igor V. Gomes   +4 more
wiley   +1 more source

Portland clinker production with carbonatite waste and tire-derived fuel: crystallochemistry of minor and trace elements [PDF]

open access: yesCerâmica, 2014
This paper presents results on the composition of Portland clinkers produced with non-conventional raw-materials and fuels, focusing on the distribution of selected trace elements.
F. R. D. Andrade   +3 more
doaj  

Italian carbonatite system: From mantle to ore-deposit

open access: yesOre Geology Reviews, 2019
A new discovery of carbonatites at Pianciano, Ficoreto and Forcinelle in the Roman Region demonstrates that Italian carbonatites are not just isolated, mantle xenoliths-bearing, primitive diatremic rocks but also evolved subtype fluor-calciocarbonatite ...
F. Stoppa   +6 more
semanticscholar   +1 more source

Oxygen–Carbon and Strontium Isotope Composition in Primary Carbonatites of the World: The Data Summary and Linear Trends

open access: yesРуды и металлы
A statistical regression analysis was performed of a summary of borrowed literary iso- topic data on 176 carbonatite occurrences worldwide (a total of 1829 paired δ18О-δ13С values in primary carbonatites).
Bolonin A. V.
doaj   +1 more source

Tracing Deep Carbon Cycling by Zinc Isotopes in a Peralkaline‐Carbonatite Suite

open access: yesGeochemistry, Geophysics, Geosystems
Sedimentary carbonates are known to be carried into the deep mantle by subducted slabs, and studies on mantle‐derived magmas have attempted to trace the recycled carbonate in their mantle source.
Bowen Wei   +8 more
doaj   +1 more source

A Spectral and Spatial Comparison of Satellite-Based Hyperspectral Data for Geological Mapping

open access: yesRemote Sensing
The new generation of satellite hyperspectral (HS) sensors provides remarkable potential for regional-scale mineralogical mapping. However, as with any satellite sensor, mapping results are dependent on a typically complex correction procedure needed to ...
Rupsa Chakraborty   +7 more
doaj   +1 more source

Unearthing of the Time of Emplacement of the Sillai Patti Carbonatite, Khyber Pakhtunkhwa, Pakistan: Constraints from 206Pb/238U Zircon Dating

open access: yesKashmir Journal of Science
The Sillai Patti carbonatite complex constitutes the second largest carbonatite complex of the Peshawar Plain Alkaline Igneous Province of northern Pakistan. It is located about 20 km west of Malakand, near Sillai Patti village.
Nimat Ullah Khattak, Y.X. Zhu, C.Q. Ma, L.X. Wang and W. Wang
doaj  

Characterisation of Pelletal Lapilli in Explosive Melilitite–Carbonatite Eruptions: An Example from Mt. Vulture Volcano (Southern Italy)

open access: yesGeosciences
Among the volcaniclastic products of melilitite–carbonatite eruptions, pelletal lapilli are often found, resulting in them being particularly useful for characterising the interface between the erupting magma and its volatile component. Pelletal lapilli,
Gabriele Carnevale, Vittorio Zanon
doaj   +1 more source

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