Results 31 to 40 of about 69 (53)

Eoarchean–Paleoproterozoic Tectonothermal History of the Acasta Gneiss Complex Constrained by Titanite and Apatite Petrochronology

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.
Abstract Deciphering Earth's earliest geodynamic processes requires temporally constrained chemical and structural data from rare exposures of ancient rocks. One of the most well‐studied of these exposures is the Acasta Gneiss Complex (AGC) in the Northwest Territories, Canada, which contains the oldest known felsic rocks on Earth.
Omar Khalil Droubi, Ann M. Bauer, Chloë Bonamici, William O. Nachlas, Joshua M. Garber, Michael J. Tappa, Jesse R. Reimink   +6 more
wiley   +1 more source

Metasomatism and Melting of Cordilleran Lithosphere Resulting From Sediment Relamination During Shallow Subduction

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.
Abstract Mantle xenoliths recovered from the modern backarc region of the northern Altiplano Plateau record metasomatism by slab‐derived silicic melts, and a suite of Quaternary volcanics suggest that melting of accreted crustal material has persisted since shallow subduction in the Oligocene.
C. D. Hiett, D. L. Newell, J. W. Shervais   +2 more
wiley   +1 more source

Structures and Leucogranites in the Eastern Himalayan Orogen From Reprocessed INDEPTH‐I Deep Seismic Reflection Profile

Tectonics, Volume 44, Issue 6, June 2025.
Abstract The INDEPTH‐I seismic reflection transect provides a unique data set for understanding active mountain‐building processes during continental collision in the Himalaya and has played a key role in the development of ductile extrusion and channel flow concepts.
Hongqiang Li, Rui Gao, Zhanwu Lu, Jiamin Wang, Xingfu Huang, Ramon Carbonell   +5 more
wiley   +1 more source

Discovery of the William's Ridge and Rig Seismic Seamount Microcontinents, Kerguelen Plateau: Signatures of a Fragmented Rifted Margin

Tectonics, Volume 44, Issue 6, June 2025.
Abstract The Kerguelen large igneous province (LIP), situated dominantly in the southern Indian Ocean, has several exceptional characteristics. These include an episodic and protracted formation over a ∼130 Myr period, sustaining the longest, continuous high‐magma‐flux emplacement interval of any LIP (>38 Myr), and the preservation of multiple ...
Jeremy L. Asimus, Jacqueline A. Halpin, Nathan R. Daczko, Joanne M. Whittaker, Millard F. Coffin, Ivan Belousov, Jacob A. Mulder, Stijn Glorie   +7 more
wiley   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Origin of Zircon from a Lherzolite Lens Based on its U-Pb SHRIMP Age, Lu-Hf Isotopic System and Trace Elements: An Input to Revealing of 2.8Ga Magmatism in the Paleoarchean Bug Granulite Complex (The Ukrainian Shield) [PDF]

Archaeology & Anthropology: Open Access, 2018
openaire   +1 more source

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PETROPARAGENESES AND POSSIBLE ORIGIN OF THE BUG AREA GRANULITE COMPLEX SUPERCRUSTAL FORMATIONS (WESTERN PART OF UKRAINIAN SHIELD). Article 1. GENERAL INFORMATION AND ROCK COMPOSITION OF THE PETROPARAGENESES

Mineralogical journal, 2019
V.P. Kyrylyuk, M.I. Bogdanova, E.I. Savina   +2 more
openaire   +3 more sources

Composition and Structure of Zircon from Harzburgite Inclusion Hosted in Granulites of the Bug Complex, Ukrainian Shield

Geology of Ore Deposits, 2019
The comprehensive study (electron microscopy, mass-spectrometry of secondary ions, Raman spectroscopy) of zircon from harzburgite inclusion in granulites of the Bug complex (Ukrainian Shield) is carried out. Based on a number of features, the studied zircons are subdivided into three groups.
S. B. Lobach-Zhuchenko, S. G. Skublov, Yu. S. Egorova, D. V. Prishchepenko, O. L. Galankina   +4 more
openaire   +1 more source

The long (3.7–2.1 Ga) and multistage evolution of the Bug Granulite–Gneiss Complex, Ukrainian Shield, based on the SIMS U–Pb ages and geochemistry of zircons from a single sample

Geological Society, London, Special Publications, 2016
Abstract Multidisciplinary studies of zircons, rock-forming minerals and the whole-rock composition of granulite samples from the Bug Granulite–Gneiss Complex, Ukraine (including ion microprobe REE analysis, secondary ion mass spectrometry (SIMS) U–Pb and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) Lu–Hf analysis ...
S. B. Lobach-Zhuchenko, T. V. Kaulina, S. K. Baltybaev, V. V. Balagansky, Yu. S. Egorova, K. I. Lokhov, S. G. Skublov, V. V. Sukach, E. S. Bogomolov, L. M. Stepanyuk, O. L. Galankina, N. G. Berezhnaya, I. N. Kapitonov, A. V. Antonov, S. A. Sergeev   +14 more
openaire   +1 more source

Palaeoproterozoic granulite-facies metamorphism in the eastern Alxa Block: New petrological and geochronological evidence from the Diebusige Complex

Precambrian Research, 2021
Ping-Hua Liu, Lei Ji, Jing-Hui Guo
exaly