Scientists examining seep carbonate (limestone)
MSc student Sarah Ewen with Professor Cam Nelson, Department of Earth and Ocean Sciences, looking at seep carbonate (limestone) in southern Hawkes Bay. The seeps are formed from chemosynthetic ecosystems, other fossil shells and chemical precipitates of aragonite and calcite. They occur where methane gas escaped from the sea floor in Miocene times, about 18 million years ago.
