silicate spherules Archives - Astrobiology

Timescale for isotope exchange reaction, τ, as a function of Pwater and vrel (solid lines). The vertical dashed line represents vrel at s16 = 0.2 (see Section 3.1.2). Here, we set T = 2000 K, r = 0.5 mm, χ = 1, and β16 = 0.3. The dashed lines represent the timescale of homogenization, τhomo, as a function of PH2 and vrel (see Section 4.2). -- astro-ph.EP

Astrochemistry, Astrogeology, Biogeochemical Cycles & Geobiology, Status Report

Oxygen Isotope Exchange Between Molten Silicate Spherules and Ambient Water Vapor with Nonzero Relative Velocity: Implication for Chondrule Formation Environment

by Keith CowingJune 26, 2023June 26, 2023

Oxygen isotope compositions of chondrules reflect the environment of chondrule formation and its spatial and temporal variations.