A simplified thermometer based exclusively on the clinopyroxene solvus has also been calibrated for potential applications to a single clinopyroxene phase, provided the clinopyroxene was once in equilibrium with orthopyroxene (xenocrysts, strongly altered lherzolites):
TCpx = (33696+454.5 . P(Gpa))/{17.61 – (8.314 . Ln ([1-XCaM2] /0.95)) – (12.13 . (X CaM2)2)}
X CaM2 = Ca M2 /(Fe2+ M2 + MgM2 + CaM2 + Mn + Na)
منبع:
Bertrand and Mercier (1985)
- بازدید: 6330
