Table 2
Cooling rates (in K Ma−1) determined for L chondrites.
| Type | Meth. (a) | Temp. | Rate | Time (b) | Used | Refs. | |
|---|---|---|---|---|---|---|---|
| Meteorite | (K) | (K Ma−1) | Ma | ||||
| Ausson | L5 | Pu-ft | 560–370 | 2.2 (+1.3,−0.7) | (2) | ||
| Shaw | L7 | Pu-ft | 600–365 | 1.9 | (2) | ||
| Mezö-Madaras | L3 | met | 773 | 2 | (4) | ||
| Adelie Land | L5 | met | 773 | 2 | (4) | ||
| Ausson | L5 | met | 773 | 1–100 | (1), (4) | ||
| Elenovka | L5 | met | 773 | 4 | √ | (3), (4) | |
| Bruderheim | L6 | met | 773 | 12 | √ | (4) | |
| Holbrook | L6 | met | 773 | 100–200 | (4) | ||
| Kandahar | L6 | met | 773 | 6 | (3), (4) | ||
| Mocs | L5-6 | met | 773 | 20 | (3), (4) | ||
| Tillaberi | L6 | met | 773 | 400 | (4) | ||
| Waconda | L6 | met | 773 | 4 | (3), (4) | ||
| Shaw | L7 | met | 773 | 103–104 | (4) | ||
| Barwell | L5 | W-diff | ~1100 | 22 ± 10 | 7.6 ± 0.7 | √ | (5) |
| Bruderheim | L6 | W-diff | ~1100 | 14 ± 6 | 10.4 ± 0.8 | √ | (5) |
Notes. Data of meteorites marked with a hook are used for model optimisation. (a) Pu-ft: plutonium fission tracks, met: metallographic cooling rates, W-diff: W diffusion between silicates and metal. (b) Time after CAI formation.
References.(1) Wood (1967); (2) Pellas & Störzer (1981); (3) Taylor & Heymann (1971); (4) Willis & Goldstein (1982); (5) Hellmann et al. (2019).
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