Journal ArticleDOI
High-precision UPb ages of metamorphic rutile: application to the cooling history of high-grade terranes
TLDR
In this article, the authors show that rutile has a well-defined temperature of closure and that volume diffusion is the most probable mechanism responsible for the ages being younger than the time of peak metamorphism.About:
This article is published in Earth and Planetary Science Letters.The article was published on 1989-12-01. It has received 267 citations till now. The article focuses on the topics: Granulite.read more
Citations
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Journal ArticleDOI
Crystallization thermometers for zircon and rutile
TL;DR: In this article, the authors present the combined results of high pressure-temperature experiments and analyses of natural zircons and rutile crystals that reveal systematic changes with temperature in the uptake of Ti in zircon and Zr in Rutile.
Journal ArticleDOI
Pb diffusion in zircon
Daniele J. Cherniak,E. B. Watson +1 more
TL;DR: Watson et al. as mentioned in this paper measured chemical diffusion of Ti under anhydrous conditions at 1-atm and under fluid-present elevated pressure (1.1-1.2 GPa) conditions in natural zircon.
Journal ArticleDOI
Considerations in Zircon Geochronology by SIMS
Trevor Ireland,Ian S. Williams +1 more
TL;DR: Secondary ion mass spectrometry (SIMS) is a versatile technique for measuring the chemical and isotopic composition of solid materials on a scale of a few microns as mentioned in this paper.
Journal ArticleDOI
Rutile and its applications in earth sciences
TL;DR: Rutile is the most common naturally occurring titanium dioxide polymorph and is widely distributed as an accessory mineral in metamorphic rocks ranging from greenschist to eclogite and granulite facies but is also present in igneous rocks, mantle xenoliths, lunar rocks and meteorites.
Journal ArticleDOI
Lu–hf garnet geochronology: closure temperature relative to the Sm–Nd system and the effects of trace mineral inclusions
TL;DR: In this article, the authors used thermal ionization mass spectrometry (TIMS) and MC-ICP-MS techniques to determine the Lu-Hf and Sm-Nd ages of garnet-bearing rocks for which the general thermochronology had been previously established.
References
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Journal ArticleDOI
Approximation of terrestrial lead isotope evolution by a two-stage model
J.S. Stacey,Jan Kramers +1 more
TL;DR: In this paper, a two-stage model for terrestrial lead isotope evolution is proposed, which permits the age of the earth to be that of the meteorite system and also yields good model ages for samples of all ages.
Journal ArticleDOI
Closure temperature in cooling geochronological and petrological systems
TL;DR: In this paper, a good approximation is obtained by relating τ to the slope of the cooling curve at the closure temperature of a geochronological system, which is defined as its temperature at the time corresponding to its apparent age.
Journal ArticleDOI
Diffusion of 40Ar in biotite: Temperature, pressure and compositional effects
TL;DR: In this article, the authors measured radiogenic 40Ar loss from sized biotite (56% annite) samples following isothermalhydrothermal treatment have provided model diffusion coefficients in the temperature interval 600°C to 750°C, calculated on the assumption that Ar transport proceeds parallel to cleavage.
Journal ArticleDOI
Diffusion of 40Ar in hornblende
TL;DR: In this article, the authors measured radiogenic 40Ar loss from two compositionally contrasting hornblendes following isothermal-hydrothermal treatment have provided model diffusion coefficients in the temperature range of 750° C to 900° C.
Journal ArticleDOI
Pressure-Temperature-Time Paths and a Tectonic Model for the Evolution of Granulites
TL;DR: Petrologic studies and application of well-calibrated mineralogic thermometers and barometers reveal several important features common to many granulite terrains: (1) "Peak" metamorphic pressure and temperature conditions cluster around values of $$7.5 \pm 1 kbar$$ and $$800 \pm 50°C$$, implying average geothermal gradients of 30-35°C/km as discussed by the authors.
Related Papers (5)
Approximation of terrestrial lead isotope evolution by a two-stage model
J.S. Stacey,Jan Kramers +1 more