oxygen isotopes

The spatial extent of the Indus valley civilisation (~5,300 to 3,300 years before present) is marked by dotted green lines along with the Indus river (brown line). Shading indicates the spatial pattern of June-to-September rainfall rate (mm/day). The Sahiya cave is shown by a black star. Credit: DOI: 10.1126/sciadv.1701296

A Story of Monsoons and the Indus Civilisation, Teased out of Ancient Rock