Cooling rates of chondrules from diffusion profiles in relict olivine grains

Stockdale, Shannon; Franchi, Ian; Morgan, Dan; Anand, Mahesh and Grady, Monica (2018). Cooling rates of chondrules from diffusion profiles in relict olivine grains. In: European Planetary Science Congress 2018, 16-21 Sep 2018, Berlin, Germany.

URL: https://www.epsc2018.eu/

Abstract

Chondrule cooling rates are one of the important constraints on chondrule formation and can be used to distinguish between different chondrule formation mechanisms. Here we have modelled diffusion profiles observed across the boundary between forsteritic-olivine relict grains and more fayalitic overgrowth. We show that the cooling of chondrules is complex and good model fits are produced with non-linear cooling rates, offering additional scope for constraining the origin of chondrules.

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