Abstract - sandstone marbles
When sand dunes and water mix with millennia of time and layers of geology, Moqui marbles are born. Named for an ancient tribe in the desert southwest of the USA, the marbles seem like a child's plaything in nature. They are formed - rather eroded - out of sandstone as wind and water wash away the softer sandstone around them. Within each marble is enough iron and manganese to make it a little bit more durable than the layer in which it formed. This flock of marbles is almost a half-acre spread solid over a flat mesa in the wilderness of southern Utah. One could speculate that the Creator may have briefly spent some time in geological amusement.