#Geology #Sedimentology #learning #waveserosion #carbonates #Cretaceous Atlantic Ocean has carved into the carbonate cliffs fabulous shapes at Étretat, Normandy, NW France, sometimes 90 m above sea level. Famous painters as Claude Monet, writers as Victor Hugo and movie directors as Luc Besson were amazed in front of the majestic landscape. The popularity of the "Étretat chalk complex", as it is known, made the multitude people that contemplate the great wall of chalk to rise

Sea level changes and storm signatures in a sedimentary basin sea-to-lake transition toward dry out final evolution stages #Geology #Sedimentology #sedimentarybasins #sedimentarystructures The present article captures a Late Pliocene sedimentary framework of a basin transition from brackish marine to fresh-water lake environment towards his pre-Quaternary final evolution stage - the dry out. This continuous evolution is very well illustrated in a ~100m logged sedimentary suc

#Geology #tectonicplates #learning #Iceland Interactions of tectonic plates generate various geologic features, from mountain belts to faults. One unique example is represented by Iceland, the only inhabited island in the world where tectonic plates and ocean ridge are visible on land. This makes Iceland a real hotspot in geological context. In Thingvellir National Park, southern part of Iceland, the North American and Eurasian tectonic plates meet or rather move away from ea

Petrified forest mystery

#Geology #Sedimentology #Triassic #extinction #learning Photo: Triassic Agatized Ammonite Cluster - Indonesia (www.fossilera.com) About 252 million years ago, the most catastrophic event from Earth's history led to disappearance of over 95 % of marine and 70% of terrestrial species: the end Permian or Permian-Triassic extinction. Researchers state a sum/cumulative of factors that caused it: temperature crisis, alteration of Carbon cycle, a violent volcanic eruption, populati