 
 <prompt> Which one dey less useful to farmers, black surface soil or rock salt? Given the previous question, write a context wey contain the answer. E fit be 1 - 20 sentences. Context: <response>: Underpinning Houston land surface na unconsolidated clays, clay shales, and poorly cemented sands wey fit reach several miles deep. The region geology develop from river deposits wey form from the erosion of the Rocky Mountains. Dis sediments consist of series of sands and clays wey dey deposited on top decaying organic marine matter, wey over time, transform into oil and natural gas. Beneath the layers of sediment na water-deposited layer of halite, wey be rock salt. The porous layers dem dey compressed over time and dem dey forced upward. As e dey push upward, the salt dey drag surrounding sediments into salt dome formations, wey dey trap oil and gas wey dey seep from the surrounding porous sands. The thick, rich, sometimes black, surface soil dey suitable for rice farming for suburban outskirts where the city dey continue to grow. 