I have put together several spreadsheets that can be used to calculate the P-T conditions of crystallization or partial melting, and mantle potential temperatures. 1. Amphibole P-T 2. Clinopyroxene P-T 3. Convert Steller Comps to Planetary Min 4. Feldspar-liquid P-T-H2O 5. Mantle Potential Temperatures 6. … See more For majors in Earth & Environmental Sciences, I teach Mineralogy (EES 12), Analytical Methods in the Earth Sciences (EES 100), and Igneous and Metamorphic Petrology (EES 101). At the graduate level, I teach … See more We have a PANalytical X’Pert Pro powder X-ray Diffractometer with an X’Celerator detector (acquired in 2005). This instrument plays an important role in the projects described below. Selected Recent Publications 1. … See more My research interests are several. I am interested in how the internal engine of our planet works. My research group thus attempts to estimate the depths and pressures of partial melting in Earth’s mantle, to better … See more WebResults from two-feldspar thermometers are given in columns AD – AF. The models are P-sensitive, so require an input P, in column C. Tests for equilibrium As a test for equilibrium, one can compare the activities between those calculated for alkali and plagioclase feldspar, using the models of Elkins and Grove (1990) (columns AX – AZ ...
TITANOR: A TITANIUM-IN-POTASSIUM FELDSPAR …
http://lrg.elte.hu/oktatas/PhD%20courses/Bazalt%20es%20fazisdiagramjai%20PhD/Irodalom/15.%20Benisek%20et%20al%20New%20developments%20in%20two-feldspar%20thermometry.pdf Webfeld·spar. (fĕld′spär′, fĕl′spär′) Any of a group of abundant minerals consisting of silicates of aluminum with potassium, sodium, and calcium. Feldspars range from white, pink, or … roberts rd11 radio
Ternary-feldspar modeling and thermometry - GeoScienceWorld
WebJul 1, 2013 · The two-feldspar thermometer calculations use equation 27b of Putirka (2008), and the Excel workbook follows the same layout as the other thermometers described in this paper.In the absence of pressure constraint on individual analyses as in the case of amphibole, the pressure used in grid calculations is a single, user-input value. WebA new approach to reconstruct the temporal variation of rock surface temperature using the TL of feldspar is introduced. Forward modelling of different TL signals suggests that TL signals in the range of 210 to 250 ∘C are sensitive to typical surface temperature fluctuations, which we define as TL thermometers. WebJan 16, 2024 · Temperature-sensitive reactions have steep slopes on P-T diagrams (Figure 3a). The most common exchange thermometers involve exchange of Fe 2+ and Mg between two minerals, ... orthopyroxene … roberts rd60 dismantle