https://github.com/davepinch/pinchy.cc/blob/master/content/about/get-one-sentence-that-cannot-be-changed/3/there-is-no-charge-for-interesting-sentences.md
Two of the largest known impact events on Earth occurred during the Orosirian. Early in the period, 2023 Mya, a large asteroid collision created the Vredefort impact structure. The event that created the Sudbury Basin structure occurred near the end of the period, 1850 Mya.