Results 61 to 70 of about 30,693,449 (167)

Late Cretaceous Nature of SW Borneo and Paleo-Pacific Subduction: New Insights from the Granitoids in the Schwaner Mountains

Lithosphere, 2022
Cretaceous igneous rocks in SW Borneo are significant for investigating the Paleo-Pacific subduction and regional correlation. This paper presents new zircon ages and Sr–Nd–Pb–Hf–O isotopic and whole-rock geochemical data for the Cretaceous granitoids in
Xin Qian, Yongqi Yu, Yuejun Wang, Chengshi Gan, Yuzhi Zhang, Junaidi Bin Asis   +5 more
doaj   +1 more source

U–Pb geochronology and zircon composition of late Variscan S- and I-type granitoids from the Spanish Central System batholith [PDF]

International Journal of Earth Sciences, 2012
The Spanish Central System (SCS) batholith, located in the Central Iberian Zone, is one of the largest masses of granite in the European Variscan Belt. This batholith is a composite unit of late- and post-kinematic granitoids dominated by S- and I-type series granite, with subordinate leucogranite and granodiorite.
Orejana, David, Villaseca, Carlos, Valverde-Vaquero, Pablo, Belousova, Elena, Armstrong, Richard   +4 more
openaire   +3 more sources

A Mohr‐Cyclide Construction for Finite Deformation and Its Application to 3D Analysis of Deformed Vein Sets

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 11, November 2026.
Abstract 2D finite deformation analysis commonly relies on simplified assumptions such as plane strain and isovolume, which are insufficient to fully characterize 3D geological structures, leading to incomplete tectonic interpretations. To overcome these limitations, this study proposes the Mohr‐cyclide for finite deformation as a new kinematic tool to
S. Soejima, S. R. Wallis
wiley   +1 more source

Adakite-like granitoid porphyries in the Eastern Pontides, NE Turkey: Potential parental melts and geodynamic implications

, 2011
The tectonic setting of the Eastern Pontides during the late Mesozoic to early Cenozoic remains a subject of debate. Petrogenesis of adakite-like granitoid porphyries plays a critical role in determining the nature of the lower continental crust and ...
Wijbrans, Jan, Aydin, F., Aydin, Faruk, Ketenci, Murat, Jan Wijbrans, Karsli, O., Abdurrahman Dokuz, Chen, Bin, Murat Ketenci, Kandemir, R., Wijbrans, J.R., İbrahim Uysal, Raif Kandemir, Ketenci, M., Uysal, I., Karsli, Orhan, Dokuz, Abdurrahman, Bin Chen, Kandemir, Raif, Uysal, Ibrahim, Dokuz, A., Chen, B., Orhan Karsli, Faruk Aydin   +23 more
core   +1 more source

Newtontoppen granitoid rocks, their geology, chemistry and Rb-Sr age [PDF]

, 1996
A post-tectonic Caledonian granite in southern Ny Friesland has been fully mapped and the following new names are proposed: the Chydeniusbreen granitoid suite, consisting of the Raudberget granitoid body in the north; the Newtontoppen granitoid body in ...
Balašov, Ju. A., Sirotkin, A. N., Teben'kov, A. M., Ohta, Y.   +3 more
core   +1 more source

High Heat Producing Mesoproterozoic Granitoids and Their Impact on the Geothermal Field in Lithuania, Baltic Basin

Applied Sciences
The Palaeoproterozoic crystalline basement is overlain by the Baltic Basin. Lithuania is situated in the shallow eastern periphery and grades into the deep part of the basin, which comprises a number oil fields; the thickness of the sedimentary cover ...
Saulius Šliaupa, Gediminas Motuza
doaj   +1 more source

Petrology and Geochemistry of the Qozlou Granitoid and Related Fe skarn (west Zanjan)

Journal of Economic Geology, 2020
Introduction Fe skarn deposits are one of the important Fe deposits in the Zanjan province which have been exploited in recent years. The Qozlou Fe deposit is one of these Fe skarn deposits which is located at 65 km west of Zanjan.
Neda Shafaiepour, Mir Ali Asghar Mokhtari, Hossein Kouhestani, Maryam Honarmand   +3 more
doaj   +1 more source

Petrogenesis of Early Paleozoic I-type granitoids in the Longshoushan and implications for the tectonic affinity and evolution of the southwestern Alxa Block

Solid Earth
Abstract. In the Paleozoic, the Alxa Block was situated between the Central Asian Orogenic Belt and the North Qilian Orogenic Belt, and experienced intense magmatic activity. Thus, the Alxa Block is an important area for understanding the tectonic framework and evolution of these two orogenic belts.
R. Zeng, R. Zeng, R. Zeng, H. Su, M. B. Allen, H. Shi, H. Du, H. Du, C. Zhang, J. Yan, J. Yan   +10 more
openaire   +4 more sources

Metamorphic or Igneous Zircon? Classification Through Rare Earth Elements, Machine Learning and Logistic Regression

Journal of Metamorphic Geology, Volume 44, Issue 9, Page 665-682, November 2026.
ABSTRACT Zircon is a common, highly refractory accessory mineral found in sedimentary, igneous and metamorphic rocks that forms through various processes (e.g., magmatic, hydrothermal, metamorphic growth and recrystallization). Trace element compositions of detrital zircon have been widely applied to understanding tectonic processes and continental ...
Jarrod M. Burges, Chris Yakymchuk, Michael P. DiMaio, Timothy C. C. Lui, Anirudh Prabhu, Shaunna M. Morrison   +5 more
wiley   +1 more source

I-type granitoids as indicators of a late Paleozoic convergent ocean-continent margin along the southern flank of the central European Variscan orogen

, 1990
A belt of Carboniferous to Permian I-type granitoid bodies is in the basement thrust sheets of the Alps, which correspond to the southern flank of the central European Variscan orogen.
Finger, F, Steyrer, H P
core   +1 more source