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Can I read Titanium in biotite from metapelitic rocks: Temperature effects, crystal-chemical controls, and petrologic applications on EtoBox?
Titanium in biotite from metapelitic rocks: Temperature effects, crystal-chemical controls, and petrologic applications by Darrell J. Henry; Charles V. Guidotti is a Earth and Planetary Sciences article available to read on EtoBox.
What is Titanium in biotite from metapelitic rocks: Temperature effects, crystal-chemical controls, and petrologic applications about?
An extensive natural biotite data set from western Maine constrains the temperature and crystalchemical controls on the saturation Ti levels in biotites from metapelites. The geologically and petrologically well-characterized metamorphic terrain associated with the M3 metamorphism of the Acadian Orogeny of western Maine is ideal for this approach in that metamorphism occurred at roughly isobaric conditions of 3.3 kbar, and chemical equilibrium was closely approached. The data set from these metapelites exhibits systematic variations in Ti contents over a continuum of metamorphic grades (garnet through sillimanite-K-feldspar zones), mineral assemblages, and bulk compositional ranges. Samples were selected so that competing substitutions are restricted to those in metapelites with quartz, aluminous phases (chlorite, staurolite, or sillimanite), Ti phases (ilmenite or rutile), and graphite. Due to crystal-chemical factors, in any given metamorphic zone, an inverse linear relationship exists between Ti and Mg contents. Decreasing octahedral Ti and increasing tetrahedral Si in Mg-rich biotite helps alleviate size disparity between octahedral and tetrahedral sheets. For a biotite with a
Who reads Titanium in biotite from metapelitic rocks: Temperature effects, crystal-chemical controls, and petrologic applications?
It is typically read by researchers, students, and practitioners in Earth and Planetary Sciences.
- Author
- Darrell J. Henry; Charles V. Guidotti
- Publisher
- Mineralogical Society of America; Walter de Gruyter GmbH (ISSN 0003-004X)
- Published
- 2002
- Language
- EN
- Field
- Earth and Planetary Sciences (Physical Sciences)