Rockers ", and a technique whereby blankets were used as filter for alluvial sand and then burned, with the gold melting into lumps in the fire.
12.
The Late Cretaceous sediments are overlain by Late Eocene to Pliocene alluvial sands that contain layers of clay, silt, gravel, brown coal, and lignitized wood.
13.
The gentle gradient of the River Hase in the lowlands below Bersenbr�ck facilitated the deposition of fertile alluvial sands from the Osnabr�ck Upland, resulting in very fertile farmland.
14.
As a member of the platinum group of elements, as well as of the alluvial sands of various rivers, it was first used by pre-Columbian South American natives to produce artifacts.
15.
The territory of the quarter includes a level part, which is made of the alluvial sands of Tiber, and a hilly zone, which coincides with the clay-laden slopes of the Vatican hill.
