The geological history of the Indus river basin and the Punjab plains is closely linked to the closure of an ancient oceanic tract known as the Tethys Ocean. During which geological era did the final collision and closure of the Tethys Ocean occur, initiating the rise of the Himalayas?

💡 Solution & Explanation

The final closure of the Tethys Ocean and the collision between the Indian and Eurasian landmasses took place during the Cenozoic Era, primarily through the Eocene and Oligocene epochs, building the Himalayan mountain chain. The Paleozoic Era predates the breakup of Pangaea and the formation of the Tethys Ocean in its modern configuration. The Mesozoic Era witnessed the early fragmentation of Gondwanaland but not the final continental collision that raised the Himalayas. The Precambrian Eon represents the deep geological time before complex multicellular life and major plate configurations of modern continents evolved. Reconstructing Tethys closure is fundamental to understanding the stratigraphy of northern India.