BSE images of parts of (a) KP-111 and (b) KP-97, showing the results of SIMS measurements of H 2 O in Type 1 (red symbols) and Type 2 (yellow symbols) glasses. Spot locations are indicated in white for SIMS analyses (squares) and EPMA analyses (circles), and are keyed to individual analyses given in Tables S2 and S1, respectively. Type 2 glasses that occur adjacent to olivine phenocrysts (oliv) have dark gray BSE response, and are outlined in yellow. Type 1 glasses, which dominate the groundmasses, have a lighter gray BSE response. Numbers in red or yellow represent wt. % H 2 O as measured by SIMS for Type 1 and Type 2 glasses, respectively. Type 2 glasses have higher measured average H 2 O (KP-97: H 2 O = 3.66 ± 0.10 wt. %, n = 5; KP-111: H 2 O = 3.59 ± 0.04 wt. %, n = 3) relative to Type 1 glasses (KP-97: H 2 O = 1.45 ± 0.69 wt. %, n = 6; KP-111: H 2 O = 2.84 ± 0.86 wt. %, n = 6). Images (a) and (b) may be compared with BSE images and X-ray element maps given in Figures 5 and 9, respectively. Averages exclude spots with admixed serpentine (e.g., KP-111@4).

Contexts in source publication

Context 1

... NiO, and 0.01 wt. % Cr 2 O 3 , Figure S7). Mn and Ti correlate negatively with Fo (cores down to 0.08 wt. ...

Context 2

... MnO, and 0.12 wt. % TiO 2 ) ( Figure S7). We do not see the ASHWAL ET AL. ...

Context 3

... n = 12). This is illustrated on BSE images of samples KP-111 and KP-97, on which the locations of analysis spots are given (Figure 7). Type 2 glasses in KP-108 have H 2 O = 3.36 ± 0.93 wt. ...