Results 51 to 60 of about 5,714 (221)

U-Pb geochronology of rutile: deciphering the cooling history of the Oaxacan Complex granulites, southern Mexico

Revista Mexicana de Ciencias Geológicas, 2020
Rutile (TiO2) is a heavy mineral, commonly found as accessory in many lithologies, such as basic igneous rocks, high-grade metamorphic units, as well as a detritus in sedimentary clastic rocks.
Miguel Gerardo Adame-Martínez, Luigi Augusto Solari, Carlos Ortega-Obregón, Fanis Abdullin   +3 more
doaj   +1 more source

Along‐Strike Seismic Structure of the Andreanof Aleutian Arc Segment and Implications for the Formation of Continental Crust

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract Crust formed in volcanic arcs is accreted to continents over geologic time, serving as the source material for new continental crust in Earth's present and recent past. Geochemically, arcs are found to be significantly more mafic than bulk continental crust.
Hannah F. Mark, Daniel Lizarralde, Donna J. Shillington, Valeria Cortés‐Rivas, Mark D. Behn   +4 more
wiley   +1 more source

Decompressional equilibration of the Midsund granulite from Otrøy, Western Gneiss Region, Norway

Geologica Carpathica, 2019
The Western Gneiss Region (WGR) of the Scandinavian Caledonides is an archetypal terrain for high-pressure (HP) and ultrahigh-pressure (UHP) metamorphism. However, the vast majority of lithologies occurring there bear no, or only limited, evidence for HP
Holmberg Johanna, Bukała Michał, Jeanneret Pauline, Klonowska Iwona, Majka Jarosław   +4 more
doaj   +1 more source

Impact and Crystallization Modeling of the Sudbury Basin and Its Implications for a Hadean Crust

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract The 1.85 Ga Sudbury Structure hosts Earth's largest and best‐preserved impact‐induced melt sheet, the Sudbury Igneous Complex (SIC), which crystallized into distinct noritic, gabbroic, and granophyric layers. We conduct impact simulations with iSALE‐2D and crystallization modeling using alphaMELTS 2 to track the formation and evolution of the ...
Nicolas B. Litza, Miki Nakajima, J. Brian Balta, Steven B. Shirey, Dustin Trail, Kim A. Cone, Ian Szumila, Rasmus Haugaard, Taus R. C. Jørgensen, Scott D. Hull, Michael R. Ackerson   +10 more
wiley   +1 more source

Metamorphic reactions and preliminary P-T estimates of ultrahigh-temperature mafic granulite from Tonagh Island in the Napier Complex, East Antarctica

, 1999
P(論文)Metamorphic reactions and P-T conditions of mafic granulites from Tonagh Island in the Archean Napier Complex were examined to evaluate the nature of mafic granulite which has suffered ultrahigh-temperature (UHT) metamorphism.
Owada, Masaaki, Tunogae, Toshiaki, Toyoshima, Tsuyoshi, Osanai, Yasuhito, Crowe, Warwick A., Hokada, Tomokazu   +5 more
core   +1 more source

MENDERES MASİFİ'NİN PAN-AFRİKAN TEMEL VE PALEOZOYİK - ERKEN TERSİYER ÖRTÜ SERİLERİNİN POLİMETAMORFİK EVRİMİ

Bulletin of the Mineral Research and Exploration, 2011
Batı Anadolu'da yüzlek veren Menderes Masifi ana hatlarıyla Geç Alpin sıkışma tektoniği ile biçimlenmiş karmaşık bir tektonik iç yapı sunmaktadır. Bu kristalin kompleksin litostratigrafik istifi; 1-Pan-Afrikan temel (çekirdek serisi) ve 2-Paleozoyik ...
Osman CANDAN, Roland OBERHÄNSLI, O. Özcan DORA, Mete ÇETİNKAPLAN, Ersin KORALAY, Gaëtan RIMMELÉ, Fukun CHEN, Cüneyt AKAL   +7 more
doaj  

Protracted High‐Grade Metamorphism and Slow Cooling in the Adirondacks Recalibrate Neoproterozoic Global Paleogeography

Tectonics, Volume 45, Issue 6, June 2026.
Abstract The assembly and breakup of the supercontinent Rodinia set the stage for Earth system evolution through the Neoproterozoic Era. Laurentia, the central craton in Rodinia, lacks well‐dated paleomagnetic poles between ca. 990 Ma and 780 Ma. In this study, we develop new U‐Pb petrochronology and thermochronology data sets from zircon, garnet ...
Yiming Zhang, Eben Blake Hodgin, Mark D. Schmitz, Darin M. Schwartz, Michael T. Mohr, James L. Crowley, Nicholas L. Swanson‐Hysell   +6 more
wiley   +1 more source

U-Th-Pb and Hf isotopic data on zircon and apatite of non-granulite rocks from the Saxonian Granuilite Massif

The geology of the Saxon Granulite Massif and particularly its metamorphic history is a matter of on-going (passionate) discussions that resulted in several concurring tectonic models.
Gärtner, Andreas, Linnemann, Ulf, Gerdes, Axel, Sagawe, Anja, Zieger-Hofmann, Mandy   +4 more
core   +1 more source

Experimental Study on Damage and Degradation Mechanism of Biotite Granulite Under Freeze–Thaw Action

Applied Sciences
With the increasing intensity of resource development in alpine regions, numerous geotechnical engineering problems in cold regions have become increasingly prominent.
Bing Liang, Dong Xia
doaj   +1 more source

Dating the Sedimentary Protolith of the Daldyn Group Quartzite, Anabar Shield, Russia: New Detrital Zircon Constraints

Geosciences, 2020
Quartzites and paragneisses of the Archean granulite series of the Anabar Shield (Siberian Craton, Russia) are described geochemically. The Sm-Nd isotope systematics of the rocks and the U-Pb age (SHRIMP II) and geochemistry of zircons from quartzites ...
Nikolay I. Gusev, Lyudmila Yu. Sergeeva, Sergey G. Skublov   +2 more
doaj   +1 more source