Tethyan Trench Tethyan Trench The Tethyan Trench was an ancient oceanic trench that existed in the northern part of the Tethys Ocean during the middle Mesozoic to early Cenozoic eras. The Tethyan Trench formed when the Cimmerian Plate was subducting under eastern Laurasia, around 200 million years ago, in the Early Jurassic. The Tethyan Trench extended at its greatest during Late Cretaceous to Paleocene, from what is now Greece to the Western Pacific Ocean. Subduction at the Tethyan Trench probably caused the continents Africa and India to move towards Eurasia, which resulted in the opening of the Indian Ocean. When the Arabian
Chapada Diamantina entry of water into the rock’s structure which in turn is responsible for the erosion. Chapada Diamantina Chapada Diamantina (Portuguese for the "Diamond Plateau") is a region of Bahia state, in the Northeast of Brazil. This same chain receives other names, like Serra do Espinhaço, in Minas Gerais, and Borborema, in Pernambuco and Paraíba. The Chapada Diamantina is at the center of Bahia state, in the Northeast of Brazil. It is the northern zone of the Espinhaço Range, has approximately and encompasses 58 municipalities. Technically it is considered part of the caatinga biome, and is the highest area in this