Results 51 to 60 of about 2,637,113 (187)

Sensitive high-resolution ion microprobe U-Pb dating of prograde and retrograde ultrahigh-temperature metamorphism as exemplified by Sri Lankan granulites [PDF]

, 2010
Ultrahigh-temperature (UHT) granulites of the central Highland Complex, Sri Lanka, underwent some of the highest known peak temperatures of crustal metamorphism. Zircon and monazite U-Pb systems in granulites near Kandy, the highest grade region (~1050
Osanai, Y, Williams, Ian, Sajeev, K., I.S. Williams, K. Sajeev, Y. Osanai   +5 more
core   +1 more source

Garnet peridotites from Pohorje: Petrography, geothermobarometry and metamorphic evolution

Geologija, 2010
Ultrahigh-pressure (UHP) metamorphism has been recorded in Eo-Alpine garnet peridotites from the PohorjeMts., Slovenia, belonging to the Eastern Alps. The garnet peridotite bodies are found within serpentinized metaultrabasitesin the SE edge of Pohorje ...
Mirijam Vrabec
doaj  

Petrogenesis of Huichizi granite and hosted amphibolite lens: implications for early Paleozoic evolution of the North Qinling orogenic belt

Frontiers in Earth Science
The genesis of Early Paleozoic granite and its relationship with multi-stage metamorphism in the North Qinling Tectonic Belt (NQTB) are heavily debated and limit our understanding on the evolution of the Qinling Orogenic Belt. In this paper, we conducted
Zhenhua Cui, Danling Chen, Yunfei Ren, Bowen Bai, Yuan Tang, Long Ma, Minglei Liu   +6 more
doaj   +1 more source

Unusual Hf contents in metamorphic zircon from coesite-bearing eclogites of the Dabie Mountains, east-central China: implications for the dating of ultrahigh-pressure metamorphism

, 2004
Metamorphic zircon from coesite-bearing eclogites in the Dabie Mountains encloses high-P phases, and may have formed at the peak of ultrahigh-pressure (UHP) metamorphism.
Wang, X, Griffin, W L
core   +1 more source

Paleomagnetic Constraints on the Separation of the Olongbuluke Block From the North China Block During the Late Cambrian–Middle Ordovician and Its Tectonic Significance

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract The collisional evolution of the micro‐blocks in the northeastern Tibetan Plateau is relatively well constrained. However, the reason why a fragment of the North China Block, the Olongbuluke Block, became separated from North China by the Central Qilian Block (a fragment of the South China Block) remains unclear.
Teng Wang, Yanan Zhou, Ruiyang Chai, Xin Cheng, Hanning Wu   +4 more
wiley   +1 more source

The Early‐Middle Miocene subduction complex of the Louisiade Archipelago, southern margin of the Woodlark Rift

Geochemistry, Geophysics, Geosystems, 2014
Field, microstructural, and 40Ar/39Ar thermochronologic data from the Louisiade Archipelago, the southern rifted margin of the Woodlark Basin in SE Papua New Guinea, document an accretionary wedge that formed during Early‐Middle Miocene N‐dipping ...
Laura E. Webb, Suzanne L. Baldwin, Paul G. Fitzgerald   +2 more
doaj   +1 more source

Elastic-thermobarometry: methods and applications to ultrahigh pressure metamorphic rocks

Plinius, 2020
Ultra-High Pressure (UHP) metamorphic rocks represent the evidence we have for the detailed reconstruction of tectonic processes, which are the source of major natural hazards like deep-focus earthquakes and volcanic eruptions. Mineral inclusions are often the only proof of ultrahigh pressure metamorphism and their study provides insights into the ...
openaire   +2 more sources

Origin, Tectonic Processes, and Metasomatism of Serpentinite in the Shimanto Accretionary Complex, SW Japan: Possible Diapiric Intrusion of Serpentinized Oceanic Lithosphere

Tectonics, Volume 45, Issue 7, July 2026.
Abstract Serpentinite plays a major role in the geodynamics of subduction zones. However, the processes by which serpentinite is incorporated into accretionary complexes, and the extent to which it interacts chemically and physically with accretionary lithologies, remain unclear.
Yusuke Shimura, Shunsuke Endo, Yoshihiro Asahara, Toshiki Haji, Kentaro Ushimaru, Koshi Yamamoto   +5 more
wiley   +1 more source

New Terrestrial Native Iron Discovered on Earth's Surface

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Native iron is a major common mineral in lunar samples and meteorites but rarely occurs on Earth's surface, as its stability requires highly reducing conditions with very low oxygen fugacity. To date, native iron has mainly been found in basalts, ophiolites, and deep hydrothermal systems.
Tingwei Zhang, Shuhui Cai, Zhipeng Zeng, Youqian Li, Shixia Yang, Chenglong Deng   +5 more
wiley   +1 more source

Crystal chemistry of K-tourmalines from the Kumdy-Kol microdiamond deposit, Kokchetav Massif, Kazakhstan [PDF]

European Journal of Mineralogy
Selected crystals of natural K-bearing tourmalines, extracted from a quartzofeldspathic rock from the Kumdy-Kol microdiamond deposit (an ultrahigh-pressure region of Kokchetav Massif, northern Kazakhstan), were characterized using a scanning electron ...
B. Celata, B. Celata, F. Bosi, K. A. Musiyachenko, K. A. Musiyachenko, A. V. Korsakov, G. B. Andreozzi   +6 more
doaj   +1 more source