INDIAN GEOGRAPHY

Detailed explanation-1: -This sandstone formation is about 66 to 59.2 million years old (Palaeocene age) formation – a period just after the extinction of dinosaurs-in western Rajasthan at Gehun hills near Barmer. Dr S.C.

Detailed explanation-2: -Origin of the Thar Desert Some experts consider it to be 4, 000 to 10, 000 years old, while others maintain that aridity started in this region much earlier. Another theory states that the area turned to desert relatively recently: Perhaps around 2, 000-1, 500 B.C.E.

Detailed explanation-3: -With its red dunes rolling endlessly into the ocean, the Namib is the oldest desert in the world-a sea of silica stretching along Namibia’s entire Atlantic coast.

Detailed explanation-4: -Western Rajasthan in the present age is well known for the Thar Desert. But this was not the case in the past. Indian researchers have discovered a set of rare wood boring trace fossils in the Barmer region, which reveal that this area was a tropical forest and even had a vast river network 55 million years ago.