Tiniest ancient seawater pockets revealed in 390-million-year-old rocks

Scientists have discovered the tiniest ancient seawater pockets trapped in rocks in North America for 390 million years. It is not uncommon for minerals and gems to contain small pockets of trapped liquid. But the surprising discovery revealed what was inside the tiny liquid remnants.The results confirmed that the water trapped inside the rock fit the chemistry profile of the ancient inland saltwater sea that once occupied upstate New York, where the rock originated. RockshydrogenNorth AmericaWaterAncient seawater pockets trapped in an iron pyrite framboid offer a new source of clues to climate change in vanished oceans and our ownDaniel Gregory/ University of Toronto