Results 71 to 80 of about 5,763 (231)
Ductile Extrusion Triggered by Continental Collision in NE Brazil
Terra Nova, Volume 38, Issue 4, Page 266-277, August 2026.ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser +6 more
wiley +1 more source
Titanite: A potential solidus barometer for granitic magma systems
Comptes 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
Геодинамика и тектонофизикаThis paper presents the results of a study of isotopic systems in minerals and rocks in southern margin of the epi-Archean Karelian craton in the zone of its junction with the Svecofennian mobile belt.
Sh. K. Baltybaev +2 more
doaj +1 more source
Nb and Ta diffusion in titanite [PDF]
Chemical Geology, 2015 Abstract Chemical diffusion of Nb and Ta under anhydrous, pO 2 -buffered conditions has been measured in natural titanite. The source of diffusants were mixtures of CaSiO 3 , TiO 2 , and Al 2 O 3 powders, with either Nb or Ta oxides added. Experiments were run in evacuated sealed silica glass ampoules with solid buffers (buffered at NNO). Rutherford
openaire +1 more source
Geologica Carpathica, 2015 The Tribeč granitic core (Tatric Superunit, Western Carpathians, Slovakia) is formed by Devonian/Lower Carboniferous, calc-alkaline I- and S-type granitic rocks and their altered equivalents, which provide a rare opportunity to study the Variscan ...
Broska Igor, Petrík Igor
doaj +1 more source
Cosmogenic and nucleogenic 3He in apatite, titanite, and zircon
Earth and Planetary Science Letters, 2006 Cosmogenic ^3He was measured in apatite, titanite, and zircon and cosmogenic ^(21)Ne in quartz at 13 depth intervals in a 2.7-m long drill core in a Miocene ignimbrite from the Altiplano of Bolivia. All three ^3He depth profiles as well as the ^(21)Ne profile attenuate exponentially with depth, indicating that both of these isotopes are cosmogenic in ...
Farley, K. A. +3 more
openaire +3 more sources
Geochemistry, Geophysics, GeosystemsDeciphering 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
Вісник Київського національного університету імені Тараса Шевченка. Серія Геологія, 2019 Character of Nb and Ta distribution in the different geological formations of the Aldan Shield are given in this article. To get idea about betafite from different endogenic etalon formations the authors analyzed its well known locations in the ...
V. Guliy, І. Poberezhska
doaj +1 more source
Oxygen isotopes in titanite and apatite, and their potential for crustal evolution research
Geochimica et Cosmochimica Acta, 2019 Oxygen isotope analysis of zircon, often combined with geochronology and Hf isotope analysis, has been pivotal in understanding the evolution of continental crust.
E. Bruand +4 more
semanticscholar +1 more source
Frontiers in Earth ScienceThe 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