Question

The dead sea abounds in chemically formed sedimentary rocks. Give reason.​

Answer 1

Explanation:

Chemical sediments are commonly formed by the process of evaporation of water containing salts in solution. In desert regions, shallow lakes get evaporated leaving behind a layer of salts on the surface. These get consolidated into "Sedimentary Rocks". Rock salt(naturally occurring crystalline sodium chloride) is an example of chemically formed sedimentary rock,common in the Dead Sea,and Caspian Sea,Aral Sea,etc..

Answer 2

Explanation:

With 34.2% salinity (in 2011), it is one of the world's saltiest bodies of water, though Lake Vanda in Antarctica (35%), Lake Assal in Djibouti (34.8%), Lagoon Garabogazköl in the Caspian Sea (up to 35%) and some hypersaline ponds and lakes of the McMurdo Dry Valleys in Antarctica (such as Don Juan Pond (44%)) have reported higher salinities.

Until the winter of 1978–79, when a major mixing event took place, 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.

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