Argun Formation

Argun Formation is a rock formation in Transbaikalia and Mongolia. It is in the middle of the Mongol-Okhotsk Fold Belt and used to be a part of the palaeocontinent Amuria.^[1] Dating using detrital zircon sourced from Proterozoic igneous and metamorphic rocks determined that the lower boundary is 549-570 million years old. Subduction-related setting is hinted by the poorly sorted and slightly rounded rock clasts and interlayered gravelites.^[2]

References

^ https://academic.oup.com/gji/article/213/3/1463/4862474
^ Smirnova, Yu. N.; Kurilenkov, A. V.; Khubanov, V. B. (October 1, 2023). "Composition and Age of Rocks of the Provenance Areas for the Lower–Middle Cambrian (?) Terrigenous Sediments of the Ernichnaya Formation of the Argun Massif, Eastern Part of the Central Asian Foldbelt". Stratigraphy and Geological Correlation. 31 (5): 443–458. doi:10.1134/S0869593823050076 – via Springer Link.

[1] ttps://academic.oup.com/gji/article/213/3/1463/4862474

[2] Smirnova, Yu. N.; Kurilenkov, A. V.; Khubanov, V. B. (October 1, 2023). "Composition and Age of Rocks of the Provenance Areas for the Lower–Middle Cambrian (?) Terrigenous Sediments of the Ernichnaya Formation of the Argun Massif, Eastern Part of the Central Asian Foldbelt". Stratigraphy and Geological Correlation. 31 (5): 443–458. doi:10.1134/S0869593823050076 – via Springer Link.

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