The advent of polarized light microscopy in the middle of the 19th century allowed
mineralogists and petrologists interested in igneous rocks to recognize the widespread …

(Fe, Mg) 2SiO4 occurs in the polymorphic forms of olivine (orthorhombic), wadsleyite
(orthorhombic) and ringwoodite (cubic). These are some of the most common minerals in the …

Lattice diffusion coefficients have been determined for 19 elements (Li, Be, Na, Ca, Sc, Ti, V,
Cr, Mn, Fe, Co, Ni, Zn, Y, Zr, Eu, Gd, Lu and Hf) in a single crystal of San Carlos olivine as a …

We have reinvestigated the Mn–Cr systematics in a number of primitive meteorites,
differentiated planetesimals and terrestrial planets in order to address the chronology of the …

We describe P zoning in olivines from terrestrial basalts, andesites, dacites, and komatiites
and from a martian meteorite. P 2 O 5 contents of olivines vary from below the detection limit …

Precise U–Pb ages, determined with double spike (202Pb–205Pb) thermal ionization m1ass
spectrometry, are reported for angrites Angra dos Reis (AdoR), Lewis Cliff 86010 (LEW), and …

Diffusion modeling in olivine is a useful tool to resolve the timescales of various magmatic
processes. Practical olivine geospeedometry applications employ 1D chemical transects …

Understanding the evolution and processes that shape our planet critically depends on the
robustness of the absolute ages and process durations obtained from rocks and crystals …

The timescales of magmatic processes are some of the main physical variables that are still
poorly-constrained in igneous petrology. This hinders our ability to quantify the rates at …

Magma supply from the lower crust is often proposed as a trigger mechanism for volcanic
eruptions. The timescales over which magma can be transported from the deepest parts of …