Carbonate Veins Offer Look At Chemistry Of Ancient Oceans
Researchers have developed a novel method for reconstructing past ocean chemistry using calcium carbonate veins that precipitate from seawater-derived fluids in rocks beneath the seafloor. The new method will help scientists analyze past changes in climate, plate tectonics and evolution of life in the oceans. "These processes affect ocean chemistry and have shaped our planet over millions of years," said Dr Rosalind Coggon, a professor Imperial College London. "Reconstructing past ocean chemistry remains a major challenge for Earth scientists, but small calcium carbonate veins formed from warm seawater when it reacts with basalts from the oceanic crust provide a unique opportunity to develop such records," added co-author Professor Damon Teagle from SOES. read more