Table 1.

Comparison of tonnage in the YDB strewnfield with known impact strewnfields

Field name	Age	∼% of Earth	Size, km2	Metric tons	Source
Eocene	∼35 Ma	8	4.2 × 107	100 × 107	19
Australasian	∼780 ka	10	5.0 × 107	10 × 107	18
Ivory Coast	∼970 ka	1	0.4 × 107	2 × 107	18
YDB field	∼12.9 ka	10	5.0 × 107	1 × 107	This work