The Kaigas glaciation was a hypothesized
snowball earth event in the
Neoproterozoic Era, preceding the
Sturtian glaciation. Its occurrence was inferred based on the interpretation of
Kaigas Formationconglomerates in the stratigraphy overlying the
Kalahari Craton as correlative with pre-Sturtian Numees formation glacial
diamictites. However, the Kaigas formation was later determined to be non-glacial, and a Sturtian age was assigned to the Numees diamictites. Thus, there is no longer any evidence for a Neoproterozoic glaciation prior to the Sturtian snowball earth event.[3]
References
^Brain, C. K.; Prave, A. R.; Hoffmann, K. H.; Fallik, A. E.; Herd D. A.; Sturrock, C.; Young, I.; Condon, D. J.; Allison, S. G. (2012). "The first animals: ca. 760-million-year-old sponge-like fossils from Namibia". S. Afr. J. Sci.108 (8): 1–8.
doi:
10.4102/sajs.v108i1/2.658.
^Rooney, A. D.; Strauss, J. V.; Brandon, A. D.; MacDonald, F. A. (2015). "A Cryogenian chronology: Two long-lasting synchronous Neoproterozoic glaciations". Geology. 43 (5): 459.
Bibcode:
2015Geo....43..459R.
doi:
10.1130/G36511.1.