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. 2021 Mar 9;9:e10948. doi: 10.7717/peerj.10948

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© 2021 Cilliers et al.

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.

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Plot displays temporal relationship between crystallization age and the delayed depositional input. Due to the similarity of the lower and middle Moreno Hill, this study finds evidence for a singular, longer-lived pulse of sediment input. Thereafter, a second phase with more youthful zircons, and a varied zircon history thus indicates a potential new subdivision of the Moreno Hill Formation into lower and upper members only. K–S analysis after Barbeau et al. (2009b).