Lithostratigraphic classification of the Tsodilo Hills Group: a Palaeo- to Mesoproterozoic metasedimentary succession in NW Botswana

Research at Tsodilo Hills, a UNESCO World Heritage Site in NW Botswana, reveals a Palaeo- to Mesoproterozoic metasedimentary succession characterized by three dominant micaceous quartzite units interlayered with other rock types. The study identifies distinct facies gradients indicating palaeotransport direction from south to north, with well-rounded pebbles suggesting redeposition from beach environments. Lenticular conglomeratic bodies and erosional lower boundaries reflect local incisions in sandy bottom sediments, while laterally discontinuous lithological units hint at shelf palaeotopography influenced by large bed forms like megaripple marks or submarine dunes. Two regressive events are also identified: an older one associated with tidal mudflat-related red-bed facies and a younger one marked by tabular conglomerate, indicating increased input of coarse terrigenous material.

Wendorff, M., & Świąder, A. (2020). Lithostratigraphic classification of the Tsodilo Hills Group: a Palaeo- to Mesoproterozoic metasedimentary succession in NW Botswana. Geology, Geophysics and Environment, 45(4), 305. https://doi.org/10.7494/geol.2019.45.4.305