whats at the bottom of the dead sea
Dead Sea Until the winter of 1978–79, when a major mixing event took place,[25] the Dead Sea was composed of two stratified layers of water that differed in temperature, density, age, and salinity. The topmost 35 meters (115 ft) or so of the Dead Sea had an average salinity of 342 parts per thousand (in 2002), and a temperature that swung between 19 °C (66 °F) and 37 °C (99 °F). Underneath a zone of transition, the lowest level of the Dead Sea had waters of a consistent 22 °C (72 °F) temperature and complete saturation of sodium chloride (NaCl).[citation needed] Since the water near the bottom is saturated, the salt precipitates out of solution onto the sea floor.