Results 11 to 20 of about 764 (194)

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+6 more sources

Provenance reconstructions. Article 4. Modern methods for investigating detrital minerals (zircon, apatite)

open access: yesЛитосфера, 2020
Research subject. This article aims to review modern methods for investigating detrital zircons and apatites used as mineral indicators of the composition and age of distributive provinces. Materials and methods.
L. V. Badida, A. V. Maslov, G. A. Mizens
doaj   +1 more source

Detrital zircon record and tectonic setting [PDF]

open access: yesGeology, 2012
ABSTRACTDetrital zircon spectra refl ect the tectonic setting of the basin in which they are deposited. Convergent plate margins are charac-terized by a large proportion of zircon ages close to the depositional age of the sediment, whereas sediments in collisional, extensional and intracratonic settings contain greater proportions with older ages that ...
Cawood, Peter Anthony   +2 more
openaire   +3 more sources

Provenance study of Phanerozoic rocks from the Cordillera Real of Bolivia

open access: yesBrazilian Journal of Geology, 2021
U/Pb ages of detrital zircon from two samples of Ordovician sediments were determined and, based on similar published data, were compared with xenocrystal inheritance of Triassic and Oligocene granitoids of the Cordillera Real in order to better ...
Alvaro Rodrigo Iriarte   +2 more
doaj   +1 more source

Detrital zircon analysis from the Galilee Basin, Queensland. [PDF]

open access: yesASEG Extended Abstracts, 2018
The effect of the Permian onset of the Hunter-Bowen Orogeny on sedimentation patterns in the eastern Galilee Basin of Queensland was investigated through a comparison of age populations of detrital zircon grains in sandstones in the Cisuralian (early Permian) Joe Joe Group and the Lopingian (late Permian) Betts Creek beds and a potential shift in ...
Phillips, Laura J.   +3 more
openaire   +3 more sources

Nature of zircon clastics in the Riphean and Vendian sandstones of the Southern Urals

open access: yesGeoresursy, 2019
New age dates of detrital zircons of terrigenous rocks augmented the possibilities of interpretation of their provenance. Unfortunately this interpretation is restricted by a formal comparison of age-and-composition characteristics of detrital crystals ...
A.A. Krasnobaev   +3 more
doaj   +1 more source

Dating the Sedimentary Protolith of the Daldyn Group Quartzite, Anabar Shield, Russia: New Detrital Zircon Constraints

open access: yesGeosciences, 2020
Quartzites and paragneisses of the Archean granulite series of the Anabar Shield (Siberian Craton, Russia) are described geochemically. The Sm-Nd isotope systematics of the rocks and the U-Pb age (SHRIMP II) and geochemistry of zircons from quartzites ...
Nikolay I. Gusev   +2 more
doaj   +1 more source

The Constraints of Carbonaceous Mudstone Re-Os and Detrital Zircons U-Pb Isotopic Dating on the Diagenetic and Metallogenic Ages from the Dabaoshan Copper Deposit in Guangdong Province

open access: yesYankuang ceshi, 2022
BACKGROUND With the development of high-precision negative thermal ionization mass spectrometry (N-TIMS) technology, Re-Os isotopic dating of carbonaceous mudstone is more and more widely used in the determination of sedimentary age. The controversy over
LIU Wusheng   +8 more
doaj   +1 more source

A tonalitic analogue to ancient detrital zircon

open access: yesChemical Geology, 2018
Abstract A zircon population from an Archean tonalite sample from southern West Greenland has been used as a source analogue in order to test common methods and approaches applied to ancient detrital zircon populations. Measurements of U-Th-Pb, oxygen and Lu-Hf isotopes as well as rare earth element and Ti concentrations were made in these zircon ...
Kielman, Ross   +3 more
openaire   +4 more sources

Provenance analysis of Sinian sediments on the northwestern margin of Tarim Basin and its restriction on basin types

open access: yesShiyou shiyan dizhi, 2020
The Neoproterozoic is a very important stage in the global tectonic evolution, which experienced the amalgamation and break-up of the Rodinia. The Nanhua and Sinian strata in the Tarim Basin, which is one of the three major craton basins, have recorded a
Hanlin CHEN   +7 more
doaj   +1 more source

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