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Morphology and surface features of olivine in kimberlite: implications for ascent processes
Morphology surface features olivine kimberlite ascent processes
2015/1/6
Most kimberlite rocks contain large proportions of ellipsoidal-shaped xenocrystic olivine grains that are derived mainly from disaggregation of peridotite. Here, we describe the shapes, sizes and surf...
Experimental deformation and recrystallization of olivine – processes and timescales of damage healing during postseismic relaxation at mantle depths
Experimental deformation recrystallization of olivine
2015/1/5
. Experiments comprising sequences of deformation (at 300 or 600◦C) and annealing at varying temperature (700 to 1100◦C), time (up to 144 h) and stress (up
to 1.5 GPa) were carried out in...
Combining [3He] cosmogenic dating with U–Th/He eruption ages using olivine in basalt
U–Th/He cosmogenic helium Snake River Basalts Idaho olivine
2014/4/8
This paper presents new U–Th/He crystallization and 3He exposure ages on olivine for a suite of basalt samples from the Snake River Plain, Idaho. The results provide the first demonstration that U–Th/...
What olivine, the neglected mineral, tells us about kimberlite petrogenesis
What olivine the neglected mineral kimberlite petrogenesis
2010/9/28
We report here the results of a petrographic and geochemical study of remarkably well-preserved kimberlites from the Kangamiut region in Greenland. The samples contain between 5 and 45% of olivine in ...