Results 61 to 70 of about 8,065 (232)

(The) Petrochemical review of the granitoids in south korea [PDF]

, 1982
남한에 分布하는 화강암류의 약600개 화학분석자료를 암석화학적 암석성 인론적인 관점에서 고찰하였다. 120개의 쥬라기 대보화강암류와 340개의 백악기 불국사 화강암류의 norm값에 의하면 모두 화강섬록암과 화강암에 해당된다. 대부분 calc-alkaline 화강암류에 속하는 남한의 화강암류는 한반도의 남동에서 북서로 감에 따라 calc-alkalic에서 alkali-calcic으로 점이해가는 경향을 보이고 있다. Calc-alkaline 화강암류를
박미령.
core  

EARLY NEOPROTEROZOIC GRANITOIDS IN THE RYAZANOVSKY MASSIF OF THE YENISEI RIDGE AS INDICATORS OF THE GRENVILLE OROGENY AT THE WESTERN MARGIN OF THE SIBERIAN CRATON

Геодинамика и тектонофизика
Studies of the geological history of the Yenisei Ridge are important not only for understanding the tectonic evolution of mobile belts at the boundaries of ancient cratons but also for problem solving whether the Siberian craton was a part of the Rodinia
A. D. Nozhkin, O. M. Turkina, I. I. Likhanov, Yu. L. Ronkin   +3 more
doaj   +1 more source

Granitoides e séries magmáticas: o estudo contextualizado dos granitoides

Pesquisas em Geociências, 2016
A relação que muitas rochas graníticas possuem com magmas menos diferenciados provenientes do manto tem sido subestimada nas últimas décadas, perdendo-se assim uma poderosa ferramenta científica para investigação de ambientes geotectônicos antigos e da própria evolução do sistema manto-crosta. Propõem-se neste trabalho que os magmas graníticos passem a
openaire   +2 more sources

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

Journal 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, Gençalio?lu Kuşcu, Gonca, Meinert, Lawrence D., Floyd, Peter A.   +3 more
openaire   +2 more sources

Petrogenesis and Tectonic Evolution of Cenozoic Magmatism in the Southernmost Northern Andes: Insights From Zircon Petrochronology

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract This study integrates new zircon U–Pb ages, zircon εHf(t)–δ18O isotopic data, and whole‐rock geochemistry to refine the temporal and spatial framework of magmatism in the southern Northern Andes (SNA) from ∼65 to 6 Ma. The San Lucas, Catamayo, Portachuela, and Gonzanamá batholiths and magmatic suites, along with Late Miocene plutons, display ...
J. Iglesias, C. Witt, L. C. Sandoval Espinel, M. Zattin, M. Poujol, O. Bruguier, O. Poma, M. J. Hernández, O. Averbuch, M. Seyler, D. Bosch, F. Chanier, S. Ventalon, C. Liorzou, V. Bosse   +14 more
wiley   +1 more source

Petrogenetic and geochemical characteristics of some auriferous granitoids in the Kumasi Basin, Ghana: Implications for geodynamic settings and controls of orogenic gold mineralization in the Edikan Gold Mine

Deep Underground Science and Engineering
The Edikan Mine, which consists of Fobinso and Esuajah gold deposits, lies within the Asankrangwa Gold Belt of the Birimian Supergroup in the Kumasi Basin.
Emmanuel D. Sunkari, Obed Oppong, Theophilus K. Agbenyezi   +2 more
doaj   +1 more source

Geology of the central Kohistan Arc, Northern Swat, Kalam (NW, Pakistan), results of a new 1:50,000 scale geological mapping

Journal of Maps
The study area in, northern Swat, Pakistan represents a critical segment of the Cretaceous to Tertiary Kohistan arc. It is characterized by complex interplay of plutonic, volcanic and metamorphic systems, whose magmatic and tectonic relationships remains
Tanveer Ahmad, M. Qasim Jan, Kirsten Drüppel   +2 more
doaj   +1 more source

Linking Biocrust Architecture and Dispersal: Reproductive Ecology of Lichens of the Grit Crust in the Coastal Atacama Desert

Environmental Microbiology Reports, Volume 18, Issue 4, August 2026.
Microscopic analysis of Atacama Desert grit crust revealed a sequential assembly process in which airborne fungal spores of the Caliciaceae colonise quartz particles before encountering compatible Trebouxia photobionts. Free‐living algal cells on grit surfaces function as environmental reservoirs for symbiosis initiation, while multiple wind‐driven ...
Lina Werner, Janina Koziol, Patrick Jung
wiley   +1 more source

Comparison between natural radioactivity levels and geochemistry of some granitoids in western Turkey [PDF]

, 2016
Granitoids commonly include K-feldspar, biotite and zircon, apatite, titanite, allanite, and xenotime crystals, which are known to contain common radioactive elements.
Boztosun, Ismail, Erkul, Sibel Tatar, Erkul, Fuat, Ozmen, Suleyman Fatih   +3 more
core   +1 more source

Two‐Stage Mafic‐Felsic Magma Interactions and Related Magma Chamber Processes in the Arc Setting: An Example From the Enclave‐Bearing Calc‐Alkaline Plutons, Chinese Altai

Geochemistry, Geophysics, Geosystems, 2021
A systematic data set of petrography, mineralogy, geochronology, and geochemistry is reported for typical arc granitoids and associated mafic microgranular enclaves (MME) from the Chinese Altai, Central Asian Orogenic Belt.
Xing Cui, Min Sun, Guochun Zhao, Yunying Zhang, Jinlong Yao   +4 more
doaj   +1 more source