Geology of the Pacific Ocean . The Pacific Ocean developed from the Panthalassa, a vast global ocean, following the breakup of the supercontinent Pangaea in the Mesozoic Era, gradually forming Gondwana and Laurasia, which in turn divided. There is no firm date for when the changeover occurred, as the replacement of the sea bed is a continuous process, though reconstruction maps often change the name from Panthalassic to Pacific around the time the Atlantic Ocean began to open. The Panthalassic Ocean first opened around 750 million years ago at the breakup of Rodinia, but the oldest Pacific Ocean floor is only around 180 Ma old.
Gondwana Kingdom him. He moved his capital from Chouragarh to Ramnagar of Mandla district. Shankar shah and Raghunath Shah was the freedom fighter who revolted against the British Raj in 1857. Gondwana Kingdom Gondwana Kingdom was the ruling kingdom in Gondwana region of India.The Gondwana region includes core region of eastern part of the Vidarbha of Maharashtra, the parts of Madhya Pradesh immediately to the north of it, and parts of the west of Chhattisgarh. The wider region extends beyond these, also including parts of northern Telangana, western Odisha and southern Uttar Pradesh. The Gondwana Kingdom was ruled by Rajgonds.The Rajgonds are