Occurrence of these radiolarian assemblages indicate a Campanian age of the CORBs at Daba, corroborated by co-occurring planktic foraminifers. Radiolarian and foraminiferal microfossil evidence and lithology of the strata indicate that the sediments were deposited at the lower continental margin of the Indian continental plate and in an adjacent abyssal oceanic basin.
The discovery of radiolarians from the CORBs at Daba area contributes to the paleogeographic interpretation of Late Cretaceous strata in southern Tibet and the Tethyan Himalaya. Unanswered is the remaining question: Was it the difference in palaeoceanography, such as ocean circulation, or plate tectonics, which resulted in the CORBs in the Tethyan Himalaya being younger than similar deposits in the western Tethys, where the deposition of this lithofacies had already begun in the Turonian? To answer this question more detailed biostratigraphic studies in southern Tibet are needed.