Fractional Crystallization
The answer is Bahrain and Kuwait, both sources provide some evidence.
"https://en.wikipedia.org/wiki/History_of_Bahrain"
"https://en.wikipedia.org/wiki/Sheikhdom_of_Kuwait"
To learn when you grow up you might have to know about to get the job
Lava that cools so quickly that the ions do not have time to arrange themselves into crystals with definite shape will form igneous rocks with FINE GRAINED TEXTURE. Igneous rocks are those rocks formed as a result of cooling of magma or lava.