Results 61 to 70 of about 7,825 (224)

Mineralogy, petrology, and petrogenesis of the Suvasvesi granitoid intrusion

open access: yes, 2021
The Paleoproterozoic (1.87 Ga, ɛNd -3.7) Suvasvesi granitoid intrusion in southeastern Finland is considered to be a part of the Heinävesi intrusive suite.
Rantanen, Hanna
core  

Petrogenesis Batuan Granitoid di Desa Ketro, Kecamatan Tulakan, Kabupaten Pacitan, Provinsi Jawa Timur Berdasarkan Petrografi dan Geokimia [PDF]

open access: yes, 2017
Singkapan granitoid di Desa Ketro, Kecamatan Tulakan, Kabupaten Pacitan, Jawa Timur merupakan salah satu bukti keberadaan batuan plutonik asam di Pulau Jawa. Sejauh ini, keberadaan batuan asam di Pulau Jawa sangat terbatas.
Sidiq, Mohammad Arifin   +2 more
core   +1 more source

Provenance of Middle Triassic sediments in the Southern Youjiang Basin: Insights from detrital zircon geochronology and tourmaline geochemistry

open access: yesThe Depositional Record, Volume 12, Issue 4, September 2026.
Middle Triassic turbidites in the Youjiang Basin were chiefly derived from a Late Palaeozoic continental arc along the southeastern South China Block, as revealed by detrital zircon U–Pb geochronology and tourmaline geochemistry, supporting a tectonic model driven by Paleo‐Pacific subduction rather than Paleo‐Tethyan closure.
Yumei Wei, Lanqiu Meng, Yu Zhang
wiley   +1 more source

Detrital zircon ages, Lu‐Hf isotopes of zircon grains, Sr‐Nd isotopes on whole rock and geochemistry of Campanian turbidites in the Eastern Pontides (NE Türkiye): A provenance assessment and Gondwana records

open access: yesThe Depositional Record, Volume 12, Issue 4, September 2026.
These findings confirm that the Campanian‐aged Bozbent Member turbiditic sequence in the Eastern Pontides was deposited in an extensional fore‐arc basin and therefore exhibits the petrographic and geochemical characteristics of passive margin sandstones.
Çiğdem Saydam Eker   +6 more
wiley   +1 more source

Complex examination of the Upper Paleozoic siliciclastic rocks from southern Transdanubia, SW Hungary—Mineralogical, petrographic, and geochemical study [PDF]

open access: yes, 2007
A vertical section of Upper Paleozoic sandstones from southern Transdanubia (Mecsek-Villány area, Tisza mega-unit, Hungary) has been analyzed for major and trace elements, including rare earth elements (REEs).
Nesbitt   +34 more
core   +1 more source

Geochemical characteristics and petrogenetic process of late cretaceous granites in the southern Tibet Gangdese Tectonic Belt

open access: yesFrontiers in Earth Science
IntroductionThe Gangdese Tectonic Belt was formed through the prolonged subduction and collisional processes involving the Neo-Tethys Ocean and the Indian and Asian continental plates, preserving tectonic evolutionary imprints of both oceanic subduction ...
Feifei Zheng   +4 more
doaj   +1 more source

Deep structure and geodynamic conditions of granitoid magmatism in the Eastern Russia

open access: yesЗаписки Горного института, 2020
We investigated the deep structure of the lithosphere and the geodynamic conditions of granitoid magmatism in the Eastern Russia within the borders of the Far Eastern Federal District.
Viktor I. Alekseev
doaj   +1 more source

Tectonic setting and petrogenesis of the Çelebi granitoid, (Kırıkkale-Turkey) and comparison with world skarn granitoids

open access: yesJournal of Geochemical Exploration, 2002
Abstract Many studies have shown systematic correlations between the composition of plutons worldwide and the metal content of associated skarns. This is the first report of similar correlations between the composition of Celebi granitoid and skarns of the Celebi district in Central Anatolia, Turkey.
Kuşçu, İlkay   +3 more
openaire   +2 more sources

Morphological Changes and Alterations in Erosion–Accretion Patterns in a Semiarid Brazilian River

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 9, September 2026.
Flow regulation by the Castanhão Dam significantly altered discharge dynamics and reduced sediment transport in the Jaguaribe River. Long‐term analysis (1958–2025) reveals attenuated flood peaks, decreased channel migration and progressive downstream stabilisation, highlighting persistent geomorphic adjustments in a regulated semiarid fluvial system ...
Andrea Almeida Cavalcante   +2 more
wiley   +1 more source

The Archean Granitoid-Paleoproterozoic Unconformity: Superimposition of Alteration Events in Archean Granitoids, Gabon

open access: yesProcedia Earth and Planetary Science, 2013
AbstractThe Archean granitoids of the South Gabon, dated from 3.0-to-2.5 Ga, were examined along the Archean-Proterozoic unconformity. The petrography was based on mineralogical identification using electron microscopy, X-ray diffraction, and the electron microprobe.
Idalina, Mouélé Moubiya   +6 more
openaire   +3 more sources

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