Results 101 to 110 of about 16,247 (260)

The timing and duration of the Delamerian orogeny: Correlation with the Ross Orogen and implications for Gondwana assembly [PDF]

open access: yes, 2006
Copyright © 2006 by the University of Chicago PressThe Antarctic Ross and the Australian Delamerian orogenies are the consequence of stress transfer to the outboard trailing edge of the newly assembled Gondwana supercontinent.
Burtt, A.   +3 more
core   +1 more source

Rapid Transition From High‐Pressure Metamorphism to Exhumation Driven by Orogen‐Parallel Extensional Shearing (Adula Unit, Eastern Central Alps)

open access: yesTectonics, Volume 45, Issue 2, February 2026.
Abstract In the Central Alps, the Adula unit exposes high‐ and ultra‐high‐pressure (HP‐UHP) metamorphic rocks, providing key insights into the subduction and exhumation dynamics of the former distal European margin. We investigate the San Bernardino Shear Zone (SBSZ), a top‐to‐the‐east extensional shear zone developed within orthogneiss and paragneiss ...
C. Montemagni   +4 more
wiley   +1 more source

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

open access: yesGeochemistry, Geophysics, Geosystems
Deciphering Earth's earliest geodynamic processes requires temporally constrained chemical and structural data from rare exposures of ancient rocks.
Omar Khalil Droubi   +6 more
doaj   +1 more source

U-Pb age of Kaapvaal craton titanite: geotectonic interpretation and correlation with the Karelian craton

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2019
The results of dating of Kaapvaal Craton titanite are reported. It is shown that metamorphiczircon, apatite, amphibole and garnet in the Neoarchaean tectono-thermal activation belt in the eastern Swaziland terrane have an age of ca.
Наталья Сергеевна Нестерова   +5 more
doaj   +1 more source

NW UK continental margin : chronology and isotope geochemistry [PDF]

open access: yes, 2005
Until recently, a significant proportion of the crystalline basement from the NW UK continental shelf was virtually terra incognita in comparison with similar rocks on the mainland.
Chambers, Lynne   +3 more
core  

Reply to discussion on 'A high-precision U-Pb age constraint on the Rhynie Chert Konservat-Lagerstatte: time scale and other implications': Journal, 168, 863-872 [PDF]

open access: yes, 2013
We welcome the opportunity to address the points raised by Mark et al. in their discussion of the chemical abrasion isotope dilution thermal ionization mass spectrometry (CA–ID–TIMS) U–Pb age constraint on the Rhynie Chert Konservat-Lagerstätte presented
Crowley, Q.G.   +3 more
core   +1 more source

Titanite: A potential solidus barometer for granitic magma systems

open access: yesComptes rendus Geoscience, 2019
Constraining crystallization pressure and thus intrusion depth of granites in various geodynamic settings remains challenging, yet important to further our understanding of magma system and crustal evolution.
S. Erdmann   +7 more
semanticscholar   +1 more source

Titanite as an indicator of granite fertility and gold mineralization in the Xiaoqinling gold province, North China Craton

open access: yesFrontiers in Earth Science
The Xiaoqinling gold province, located in the southern margin of the North China Craton (NCC), is the second largest gold-enriched region in China. In this region, the Mesozoic Huashan (HS) and Wenyu (WY) plutons are the major magmatic intrusions coeval ...
Quan Wei   +17 more
doaj   +1 more source

Geochronology of the felsic rocks in Orijärvi, southern Finland – implications for stratigraphy [PDF]

open access: yesEstonian Journal of Earth Sciences
The Orijärvi area within the Paleoproterozoic Uusimaa belt contains volcanic and minor sedimentary formations, providing valuable insights into the oldest Svecofennian crust in southern Finland.
Elisa Toivanen   +4 more
doaj   +1 more source

Le magmatisme de la région de Kwyjibo, Province\ud du Grenville (Canada) : intérêt pour les\ud minéralisations de type fer-oxydes associées [PDF]

open access: yes, 2005
The granitic plutons located north of the Kwyjibo property in Quebec’s Grenville Province are of\ud Mesoproterozoic age and belong to the granitic Canatiche Complex . The rocks in these plutons are calc-alkalic, K-rich,\ud and meta- to peraluminous. They
Bain J.H.C.   +40 more
core   +3 more sources

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