Throughout the " comarca ", it crosses alluvial clay terrains, which erodes easily, causing the river to carve a deep path into the soil.
12.
A channel of the �ar _ amba river once flowed between the two mounds, and the settlement was built on alluvial clay which may have been favourable for early agriculture.
13.
The oldest of these sediments are Early Cretaceous alluvial clays, silts, and sands that contain layers of conglomerate, tuff, tuffaceous sandstone, coal, and, at top, rhyolite.
14.
The commercial center of Guayaquil is established on alluvial clay deposits interbedded with silty and clayey sand sediments, and the southwestern and southern part of Guayaquil directly lies on lands reclaimed from marshland.
15.
Excavations were also made below the royal tombs layer : a layer of alluvial clay covered the remains of earlier habitation, including pottery from the Ubaid period, the first stage of settlement in southern Mesopotamia.
16.
The brick and tile industry made use of the local alluvial clays and the Parrett's coastal trade, using ketches mostly based at Bridgwater to transport their products, which were heavy and bulky, and to bring in coal to heat the kilns.
