Sentences with phrase «luxuriant grass growth»

At the very least, these observations reveal the very earliest stage of circle formation (Fig. 11A, B) which takes place during the periods when summer rains have stimulated luxuriant grass growth.

Not exact matches

In 1878, the geologist John Wesley Powell noted the transformation observed as he crossed a north - south band of terrain in the U.S. «On the east, luxuriant growth of grass is seen, and the gaudy flowers of the order Compositae make the prairie landscape beautiful.