Results 141 to 150 of about 85,116 (273)
Geology, 2018 Advancements in mass spectrometry methods over the past two decades have allowed for rapid measurement of (U-Th)/Pb isotopes for geochronologic applications, a tool that has deeply influenced the way sediment provenance and paleo-tectonic reconstructions
M. Ibañez-Mejia +5 more
semanticscholar +1 more source
Geophysical Monograph Series, Page i-xiv., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
wiley +1 more source
Technical note: Investigation into the relationship between zircon structural damage and Pb mobility using chemical abrasion, SIMS, Raman spectroscopy, and atom probe tomography [PDF]
GeochronologyChemical abrasion (CA), a two-step process of annealing and partial dissolution, is routinely applied to zircon grains prior to U–Pb geochronology to dissolve portions of the grains affected by Pb loss prior to analysis.
C. W. Magee Jr. +7 more
doaj +1 more source
Refinement of high-spatial resolution U-Pb geochronological methodologies
, 2021 APPROVED Zircon [ZrSiO4] is a naturally occurring mineral commonly used in geochronological, isotope and elemental geochemical studies. It can form as an accessory phase in a wide variety of magmatic and metamorphic conditions and is remarkably stable both physically and chemically over geological timescales.
openaire +1 more source
Limitotipes of Lower Sakmarian and Artinskian stages boundary in the Urals
Литосфера, 2015 The section Usolka and duplicating its section Dal’ny Tulkas (Bashkortostan) are proposed as the stratotypes of the Lower Sakmarian stage boundary and Lower Artinskian stage boundary of the International Stratigraphic scale.
V. V. Chernykh, B. I. Chuvashov
doaj +2 more sources
Geochemistry, Geophysics, GeosystemsDetailed geochronology from two compositionally distinct generations of dikes and sills intruded into the Alta metamorphic aureole, north‐central Utah, complement previous geochronologic studies from the Alta stock, providing information on the timing of
C. J. Beno +5 more
doaj +1 more source
BSGF - Earth Sciences BulletinU-Th-Pb LA-ICPMS (Laser Ablation − Inductively Coupled Plasma Mass Spectrometry) has the power to elucidate the timing of metamorphism, deformation, migmatization, and plutonism.
Roger Françoise +9 more
doaj +1 more source
Geoscience Data JournalSince the advent of detrital geochronology, significant progress has been made in the study of sedimentary sources. The detrital zircon U–Pb age spectrum, especially when combined with zircon Hf isotopes, provides a powerful tool for determining the ...
Yingdi Pan, Xiumian Hu
doaj +1 more source
U-Pb geochronology of the South Mountain Batholith, Nova Scotia
, 2018 The South Mountain Batholith (SMB) is a composite peraluminous intrusion in southwestern Nova Scotia and the largest granitoid body in the Appalachian Orogen. The batholith comprises early stage biotite-granodiorite to biotite-monzogranite and a later stage of leucomonzogranite to leucogranite plutons that are associated with numerous sub-economic to ...
L Bickerton +4 more
openaire +1 more source
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.The deposition of the sandstone sedimentary succession of the Beacon Supergroup lasted more than 200 Myr (Devonian to Early Jurassic) in Victoria Land and nearby territories in the so‐called Transantarctic Basin, recording crucial events in the history of the Earth.
Luca Zurli +7 more
wiley +1 more source