Fig. 2: CO2 contents of Sunset Crater MIs and bubbles.
From: Highly explosive basaltic eruptions driven by CO2 exsolution
Filled symbols are MIs with bubbles <2.5 vol% (Group I) and open symbols are MIs with bubbles >2.5 vol% (Group II). a H2O–CO2 of MIs, including all CO2 from MI bubble. Curves are isobars from ref. 32. b Total MI CO2 vs. Fo content of the olivine host measured next to the MI. c Bubble CO2 content vs. bubble vol%; linear trend is fit through samples with bubbles <2.5 vol%. d Percentage of total MI CO2 content contained in MI bubble vs. bubble vol%. Data are also shown as a histogram of the percentage of total MI CO2 contained in the bubble. Error from FTIR analysis is 10% for H2O and 5% for CO2, while the error in the total CO2 content from bubble calculations is 5%. Error in MI bubble vol% is 15% (i.e., 0.3 vol% error for a 2 vol% bubble). See “Methods” for details on error estimates.
