Tanaki Boulder Bed — Marinoan glaciation
Hazara Basin · also Tanakki Boulder Bed
A glaciogenic diamictite in the Hazara hills marking the terminal-Neoproterozoic Marinoan 'snowball Earth' glaciation (~605–595 Ma). Its striated, angular clasts and matrix support are correlated with the Blaini Formation of India and the Sinian diamictites of South China.
- Local record of a global Neoproterozoic ice age
- Marker horizon between the Tanawal and Abbottabad formations
- Evidence for the palaeogeographic link between Lesser Himalaya and South China
The geology here
The stratigraphic units exposed at this site — every geological fact above traces to their cited sources.
Tanaki Boulder Bed
Late Neoproterozoic (Marinoan, ~605–595 Ma)Very poorly sorted, matrix-supported conglomerate (diamictite) with angular to sub-rounded clasts 3–50 cm across — dark-grey siltstone, slate and shale and ligh…
Tanawal Formation
Late ProterozoicMetaquartzite, metapsammite and garnet-mica schist (quartzite and schist).
Quantitative assessment
Scored with the Brilha (2016) method — each value 0–400. Desk-based first pass; the full score matrix ships with the open dataset.
Nearby geosites
This geosite is an editorial selection; the geological facts trace to the cited sources on the linked unit pages. Coordinates are indicative and not surveyed. ← All geosites · Suggest a correction