Table 2 Estimated shock pressures for highland samples in addition to clast size and plagioclase mod. %.
Pressure Estimates (GPa) | Ar-Ar plateau age3 | Sm-Nd | Plag mod. % | Sample mass/clast size4 | ||||
|---|---|---|---|---|---|---|---|---|
FTIR method pressure range (±3 GPa)1 | Rubin et al.4 shock scheme | age3 | ||||||
(Ga) | (2σ) | (Ga) | (2σ) | |||||
Apollo FAN Hand samples | ||||||||
60015,124 | 3.6 | ±0.8 | 98 | 50 g | ||||
‘clast’ | 0 (n = 4) | S1 (0–5)2 | ||||||
‘matrix’ | 8 to 21 (n = 3) | S2 (5–10) | ||||||
15415,18 | 0 (n = 7) | S1 to S2 (0–10) | 4 | ±0.2 | 269 g | |||
60135,17 | 3 to 12 (n = 5) | S2 to S3 (5–15) | 95 | 285 g | ||||
62236,40 | 0 to 6 (n = 9) | S2 to S3 (5–15) | 3.9 | ±0.1 | 4.29 | ±0.09 | 91 | 9.1 g |
62275,31 | 0 to 12 (n = 18) | S1 to S2 (0–10) | 93 | 443 g | ||||
60025 | 4.2 | ±0.1 | 4.37 | ±0.12 | 98 | 1836 g | ||
67215 | 3.9 | ±0.1 | 4.41 | ±0.13 | 95 | 273 g | ||
Apollo 16 Breccias | ||||||||
60016,95 | 3.8 | ±0.1 | ||||||
clast 4 | 0 (n = 4) | S1 (0–5 GPa) | single crystal | 0.2 cm | ||||
clast 1 | 0 to 15 (n = 5) | S1/S2 (0–10) | disaggregated plag. | 0.5 cm | ||||
clast 11 | 0 (n = 3) | S1 (0–5) | single crystal | 0.3 cm | ||||
clast 12 | 0 (n = 3) | S1/S2 (0–10) | single crystal | 0.05 cm | ||||
61175,108 | ||||||||
clast 2 | 0 (n = 4) | S1 (0–5) | 98 | 1.0 mm | ||||
clast 3 | 0 to 40 (n = 4) | S4/S5 (10–60) | 96 | 1.0 mm | ||||
61135,36 | 3.9 | ±0.1 | 98 | 0.75 mm | ||||
clast 2 | 0 to 3 (n = 5) | S1 (0–5) | ||||||
60035 | 4.1 | ±0.1 | ||||||
66075 | 3.9 | ±0.1 | ||||||
Meteorite anorthosite clasts | ||||||||
NWA 2995 | ||||||||
clast 1 | 0 to 26 | N/A | single crystal | 100 μm | ||||
clast 2 | 7 to 18 | N/A | single crystal | 150 μm | ||||
clast 3 | 15 to 23 | N/A | single crystal | 100 μm | ||||
