Table 1.

List of samples, locality, ¹⁸⁷Os/¹⁸⁸Os ratios, and Os model ages.

Sample	Sample type	Location	187Os/188Os	Os model age	Reference
Terrestrial samples
Yodda	Os-Ir alloy	Papua New Guinea	0.1290024 ± 12	80 Ma	[1]
Bald Hills	Os-Ir alloy	Tasmania (AU)	0.120041 ± 22	130 Ma	[1]
Savage River	Os-Ir alloy	Tasmania (AU)	0.119940 ± 9	130 Ma	[1]
L5–1	Os-Ir-Ru alloy	Josephine Ophiolite Complex (US)	0.1411853 ± 30	162 Ma	[2]
M3–6	Os-Ir-Ru alloy	Josephine Ophiolite Complex (US)	0.1228417 ± 52	162 Ma	[2]
M8–2	Os-Ir-Ru alloy	Josephine Ophiolite Complex (US)	0.1260988 ± 55	162 Ma	[2]
C1	Chromitite	Shetland Ophiolite Complex (UK)	0.129210 ± 28	492 Maa	[3,4]
C2	Chromitite	Shetland Ophiolite Complex (UK)	0.129227 ± 8	492 Maa	[3,4]
C3	Chromitite	Shetland Ophiolite Complex (UK)	0.129250 ± 6	492 Maa	[3,4]
Guli	Os-Ir alloy	Guli clinopyroxene-dunite massif (RU)	0.12428–0.12478	545–615 Ma	[5]
Kushva	Os-Ir alloy	Urals (RU)	-	870 Ma	[6]
Nizhny Tagil	Os-Ir alloy	Urals (RU)	-	870 Ma	[6]
B-1	Ru-Os-Ir alloy	Witwatersrand (SA)	−	2.66–4.10 Ga	[7]
Meteoritic samples
Morasko	Iron meteorite	IAB-Main Group	0.14649	3.5 ± 1.3 Mab	[8]
Hope	Iron meteorite	IAB-Main Group	0.16727	-	[8]
Campo del Cielo	Iron meteorite	IAB-Main Group	0.12418	4.1 ± 0.5 Mab	[8]
Bischtübe	Iron meteorite	IAB-sLL	0.12764	4.5 ± 1.2 Mab	[8]
Deport	Iron meteorite	IAB-sLL	0.12870	5.3 ± 2.0 Mab	[8]
Toluca	Iron meteorite	IAB-sLL	0.13228	5.4 ± 1.2 Mab	[8]

^[1]Brandon et al. (1998);

^[2]Walker et al. (2005);

^[3]O’Driscoll et al. (2012);

^[4]Spray and Dunning, 1991;

^[5]Malitch et al. (2011);

^[6]Anikina et al 2014;

^[7]Malitch and Merkle (2004);

^[8]Worsham et al. (2017).

^aA zircon U-Pb crystallization age from a plagiogranite vein cutting the upper portion of the SOC providing a minimum age (from Spray and Dunning, 1991)

^bMetal-silicate Hf-W segregation model ages (Δt_CAI) calculated relative to CAI (Worsham et al., 2017).