[2] The Capalla-Ulloma sill, which separates the Altiplano into a northern and southern basin,[3] did not exist at that time and it did not split up the Cabana lake body.
[2] Erosion platforms and terraces covered with gravels[5] and other wave cut structures are remnants of Lake Cabana.
[1] The Kaluyo glaciation preceded the formation of Lake Cabana,[4] earlier it was believed that the 3,900 metres (12,800 ft) high formations predated any glaciation.
[12] A phase of tectonic extension in the Titicaca basin may have favoured the formation of this lake.
[13] The existence of this lake may have facilitated the diversification of Heleobia snails, but increased speciation only occurred during the subsequent Ballivian episode.