Results 31 to 40 of about 163 (99)

Tectonic evolution of the west-central portion of the Newton window, North Carolina Inner Piedmont: Timing and implications for the emplacement of the Paleozoic Vale charnockite, Walker Top Granite, and mafic complexes [PDF]

, 2010
Detailed geologic mapping of portions of the Banoak, Reepsville, Lincolnton West, and Cherryville 7.5-minute quadrangles has confirmed the easternmost exposure of the Brindle Creek fault, which frames the Newton window.
Byars, Heather Elizabeth
core   +1 more source

Intermittent Brittle and Ductile Deformation as Recorded by Dating of Ultramylonites and Pseudotachylytes in Extending Continental Crust (Ivrea‐Verbano Zone, Italy)

Terra Nova, Volume 37, Issue 5, Page 277-286, October 2025.
ABSTRACT Mylonites and pseudotachylytes play a crucial role in defining the rheology of extending continental crust. In this context, determining the age of brittle‐ductile deformation is fundamental to understanding the rifting evolution stages. Here, we investigate the Premosello Shear Zone, an extensional structure of the Ivrea‐Verbano lower crust ...
Stefania Corvò, Chiara Montemagni, Stefano Zanchetta, Antonio Langone   +3 more
wiley   +1 more source

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

Republic of Korea : explanatory brochure [PDF]

, 1987
The purpose of this volume and the accompanying maps is to show the distribution of mineral deposits in the Republic of Korea and to provide information on their contained commodities, geographic locations, their relation to geologic environment ...
UN.ESCAP
core  

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

Petrography and mineral chemistry of lamproite-hosted xenoliths from Kjakebeinet, western Dronning Maud Land, Antarctica [PDF]

, 2013
Jurassic (159 Ma), ultrapotassic, mica-rich dykes of Kjakebeinet represent the youngest magmatic rock type observed in western Dronning Maud Land, Antarctica; abundant xenoliths are enclosed by the dykes.
Romu, Ilona
core  

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

Гранулитовые и эклогитовые комплексы в истории Земли [PDF]

, 2011
Настоящий сборник – это материалы Всероссийской с участием зарубежных ученых научной конференции. Цель конференции – обобщение современных знаний о строении, составе, условиях становления гранулитовых и эклогитовых комплексов, проведение сравнительного ...

core  

A Cautionary Tale About Not ‘Joining the Dots’ to Infer Anticlockwise P‐ T Paths

Journal of Metamorphic Geology, Volume 43, Issue 5, Page 407-419, June 2025.
ABSTRACT Uncertainty surrounds the cause and interpretation of anticlockwise pressure‐temperature ( P– T) paths in metamorphic terranes. Here, we focus on the viability of a commonly proposed mechanism—magmatic heat transfer during thickening—using a case study of the Roineabhal terrane in Scotland, where such an anticlockwise P– T path has been ...
Owen Weller, Joseph Benson, Alex Copley
wiley   +1 more source