Sedimentary rock "chert" records cooling of the Earth over billions of years

Gottingen, Germany (SPX) Dec 22, 2022

Several billion years ago, the oceans were probably not as hot as often assumed, but were instead at much more moderate temperatures. This is the conclusion of a research team from the University of Gottingen and the German Research Centre for Geosciences (GFZ), Potsdam. The scientists analysed "cherts" - sedimentary rocks that form from seawater and the remains of silica-secreting creatur