U‐Pb dating of a remagnetized Paleozoic limestone [PDF]
Geophysical Research Letters, 1991 The Upper Ordovician Trenton Group of New York State is one of a number of Appalachian limestones which yields paleomagnetic poles suggesting disturbance in the late Paleozoic. Calcite fractions dissolved from samples of the Trenton Limestone define a 238U‐206Pb age of 454±8 Ma (MSWD=12.8) in excellent agreement with 40Ar−39 Ar and U‐Pb ages for the ...
DeWolf, Charles P., Halliday, Alex N.
openaire +2 more sources
Quantifying deformation processes in the SE Pyrenees using U–Pb dating of fracture-filling calcites
Journal of the Geological Society, 2020 It is difficult to quantify the timing of the deformation processes in brittle fold–thrust belts because minerals suitable for dating and well-preserved growth strata sediments are scarce or absent.
D. Cruset +6 more
semanticscholar +1 more source
Late Precambrian U-Pb titanite age for peak regional metamorphism and deformation (Knoydartian orogeny) in the western Moine, Scotland [PDF]
, 2003 There has been controversy over the number and timing of orogenies in the Precambrian Moine block in the Scottish Caledonides since the earliest radiometric dating in the 1960s. This work challenges a recent hypothesis, that this sector of the Laurentian
Evans, J.A., Tanner, P.W.G.
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A revised Ordovician age for the Miranda do Douro orthogneiss, Portugal. Zircon U-Pb ion-microprobe and LA-ICPMS dating [PDF]
, 2006 The Miranda do Douro orthogneiss was believed to be the oldest magmatic rock of the Central Iberian Zone, on the base of a U-Pb discordia upper intercept of 618 ± 9 Ma.
Bea, F. +3 more
core +5 more sources
Extent of the Ross Orogen in Antarctica: new data from DSDP 270 and Iselin Bank [PDF]
, 2011 The Ross Sea is bordered by the Late Precambrian–Cambrian Ross–Delamerian Orogen of East Antarctica and the more Pacific-ward Ordovician–Silurian Lachlan–Tuhua–Robertson Bay–Swanson Orogen.
Bradshaw +12 more
core +1 more source
U–Pb SHRIMP zircon dating of Grenvillian metamorphism in Western Sierras Pampeanas (Argentina): Correlation with the Arequipa-Antofalla craton and constraints on the extent of the Precordillera Terrane [PDF]
, 2006 Metamorphism of Grenvillian age (ca. 1.2 Ga; U–Pb zircon dating) is recognized for the first time in the Western Sierras Pampeanas (Sierra de Maz). Conditions reached granulite facies (ca. 780 °C and ca. 780 MPa).
Baldo, Edgardo G. +7 more
core +6 more sources
Frontiers in Earth Science, 2022 Emerging evidence suggests that U-Pb and Lu-Hf ages of sedimentary apatite group minerals are often younger than their biostratigraphic ages. However, U-Pb dating of exquisitely preserved carbonate fluorapatite (CFA) is rare.
Jérémie Aubineau +7 more
doaj +1 more source
In situ U–Pb dating of 4 billion-year-old carbonates in the martian meteorite Allan Hills 84001 [PDF]
Geochronology, 2022 In situ carbonate U–Pb dating studies have proliferated dramatically in recent years. Almost all these studies have targeted relatively young terrestrial calcite up to Carboniferous in age.
R. Tartèse, I. C. Lyon
doaj +1 more source
Frontiers in Earth Science, 2023 Recent application of zircon U-Pb geochronology has contributed to deciphering the evolution of caldera systems worldwide. However, in the Tohoku region, NE Japan, this is not the case, although it is well studied as a typical island arc subduction ...
Hisatoshi Ito
doaj +1 more source
Economic Geology, 2020 Permian-Triassic granites and associated tin deposits are widespread in the Eastern and Western belts of Peninsular Malaysia. The ages and key controlling factors of tin mineralization, however, are poorly constrained.
Jie-hua Yang +8 more
semanticscholar +1 more source