Answer:
<u>B. Tectonic</u>
Explanation:
Playa is generally dry and flat. This valley is located in New Mexico, Bootheel region. Valley is noteworthy for the lake Playa i.e a dry lake in the north. This region of desert extends to northwards to the foothills of various mountain ranges, canyons and washes. It's a liner north to south trending towards mountain ranges and flat in south. Playas are formed due to evaporation of water that leaves salt behind it may be underlined with stratified sand, silt and clay. The salt flat valley also called salt marshes. A variety of playas bed occurs in restricted basins that are without outlets. The salts that form these are Chlorine, sulfate, and carbonate. Hence this landform is a product of tectonic forces and factors that influence the growth and development of this valley.
This layer of nearly molten rock that lies beneath the Earth's crust is called the <u>mantle.</u><u />
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The fossil remains built up over 185 million years. it was formed through the Jurassic, Triassic and cretaceous periods
