Sometimes the shape of the spider combines with the colour to produce the same effect, as in the species of Uloborus, which as they hang in thin shabby-looking webs exactly resemble fragments of wind-blown rubbish.
This wide-spreading loess area was formed partly of wind-blown sand and partly of detritus from the mountains.
During this period, wind-blown deposits, such as the loess, began to make their appearance.
Between the folded marine beds of the Himalaya and the nearly horizontal strata of the peninsula lies the Indo-Gangetic plain, covered by an enormous thickness of alluvial and wind-blown deposits of recent date.
The plain of Sind and of eastern Gujarat is covered by alluvium and wind-blown sand.