Metamorphic reaction rates at ~650-800°C from diffusion of niobium in rutile

Alicia M. Cruz-Uribe, Maureen Feineman, Thomas Zack, Matthias Barth

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The ability to quantify the rates at which metamorphic reactions occur is critical to assessing the extent to which equilibrium is achieved and maintained in a variety of dynamic settings. Here we investigate the kinetics of rutile replacement by titanite during amphibolite-facies overprinting of eclogite, garnet amphibolite and anorthosite from Catalina Island, CA, the Tromsø Nappe, Norway, the North Qaidam terrane, China, and the Guichicovi Complex, Mexico. Trace element concentration profiles across rutile rimmed by titanite, as determined by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), reveal Nb zoning in rutile that we interpret as the result of Nb back-diffusion from the rutile-titanite boundary. We present new field-based reaction rates calculated from grain boundary velocities, which in turn were calculated using a 1-D diffusion model for Nb back-diffusion into rutile during titanite replacement over the temperature range 670-770. °C. Our data are consistent with or slightly faster than previous estimates of field-based reaction rates for regional metamorphism, and extend the temperature and compositional range over which regional metamorphic reaction rates are known.

Original languageEnglish (US)
Pages (from-to)63-77
Number of pages15
JournalGeochimica et Cosmochimica Acta
Volume130
DOIs
StatePublished - Apr 1 2014

Fingerprint

Niobium
niobium
rutile
reaction rate
Reaction rates
titanite
replacement
Inductively coupled plasma mass spectrometry
Zoning
overprinting
anorthosite
Garnets
Trace Elements
regional metamorphism
Laser ablation
grain boundary
eclogite
amphibolite
amphibolite facies
ablation

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology

Cite this

Cruz-Uribe, Alicia M. ; Feineman, Maureen ; Zack, Thomas ; Barth, Matthias. / Metamorphic reaction rates at ~650-800°C from diffusion of niobium in rutile. In: Geochimica et Cosmochimica Acta. 2014 ; Vol. 130. pp. 63-77.
@article{c7605032a00942449bf6332683091f77,
title = "Metamorphic reaction rates at ~650-800°C from diffusion of niobium in rutile",
abstract = "The ability to quantify the rates at which metamorphic reactions occur is critical to assessing the extent to which equilibrium is achieved and maintained in a variety of dynamic settings. Here we investigate the kinetics of rutile replacement by titanite during amphibolite-facies overprinting of eclogite, garnet amphibolite and anorthosite from Catalina Island, CA, the Troms{\o} Nappe, Norway, the North Qaidam terrane, China, and the Guichicovi Complex, Mexico. Trace element concentration profiles across rutile rimmed by titanite, as determined by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), reveal Nb zoning in rutile that we interpret as the result of Nb back-diffusion from the rutile-titanite boundary. We present new field-based reaction rates calculated from grain boundary velocities, which in turn were calculated using a 1-D diffusion model for Nb back-diffusion into rutile during titanite replacement over the temperature range 670-770. °C. Our data are consistent with or slightly faster than previous estimates of field-based reaction rates for regional metamorphism, and extend the temperature and compositional range over which regional metamorphic reaction rates are known.",
author = "Cruz-Uribe, {Alicia M.} and Maureen Feineman and Thomas Zack and Matthias Barth",
year = "2014",
month = "4",
day = "1",
doi = "10.1016/j.gca.2013.12.015",
language = "English (US)",
volume = "130",
pages = "63--77",
journal = "Geochmica et Cosmochimica Acta",
issn = "0016-7037",
publisher = "Elsevier Limited",

}

Metamorphic reaction rates at ~650-800°C from diffusion of niobium in rutile. / Cruz-Uribe, Alicia M.; Feineman, Maureen; Zack, Thomas; Barth, Matthias.

In: Geochimica et Cosmochimica Acta, Vol. 130, 01.04.2014, p. 63-77.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Metamorphic reaction rates at ~650-800°C from diffusion of niobium in rutile

AU - Cruz-Uribe, Alicia M.

AU - Feineman, Maureen

AU - Zack, Thomas

AU - Barth, Matthias

PY - 2014/4/1

Y1 - 2014/4/1

N2 - The ability to quantify the rates at which metamorphic reactions occur is critical to assessing the extent to which equilibrium is achieved and maintained in a variety of dynamic settings. Here we investigate the kinetics of rutile replacement by titanite during amphibolite-facies overprinting of eclogite, garnet amphibolite and anorthosite from Catalina Island, CA, the Tromsø Nappe, Norway, the North Qaidam terrane, China, and the Guichicovi Complex, Mexico. Trace element concentration profiles across rutile rimmed by titanite, as determined by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), reveal Nb zoning in rutile that we interpret as the result of Nb back-diffusion from the rutile-titanite boundary. We present new field-based reaction rates calculated from grain boundary velocities, which in turn were calculated using a 1-D diffusion model for Nb back-diffusion into rutile during titanite replacement over the temperature range 670-770. °C. Our data are consistent with or slightly faster than previous estimates of field-based reaction rates for regional metamorphism, and extend the temperature and compositional range over which regional metamorphic reaction rates are known.

AB - The ability to quantify the rates at which metamorphic reactions occur is critical to assessing the extent to which equilibrium is achieved and maintained in a variety of dynamic settings. Here we investigate the kinetics of rutile replacement by titanite during amphibolite-facies overprinting of eclogite, garnet amphibolite and anorthosite from Catalina Island, CA, the Tromsø Nappe, Norway, the North Qaidam terrane, China, and the Guichicovi Complex, Mexico. Trace element concentration profiles across rutile rimmed by titanite, as determined by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), reveal Nb zoning in rutile that we interpret as the result of Nb back-diffusion from the rutile-titanite boundary. We present new field-based reaction rates calculated from grain boundary velocities, which in turn were calculated using a 1-D diffusion model for Nb back-diffusion into rutile during titanite replacement over the temperature range 670-770. °C. Our data are consistent with or slightly faster than previous estimates of field-based reaction rates for regional metamorphism, and extend the temperature and compositional range over which regional metamorphic reaction rates are known.

UR - http://www.scopus.com/inward/record.url?scp=84893953412&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893953412&partnerID=8YFLogxK

U2 - 10.1016/j.gca.2013.12.015

DO - 10.1016/j.gca.2013.12.015

M3 - Article

VL - 130

SP - 63

EP - 77

JO - Geochmica et Cosmochimica Acta

JF - Geochmica et Cosmochimica Acta

SN - 0016-7037

ER -