The Atterberg limits can be used to distinguish between silt and clay, and it can distinguish between different types of silts and clays.

At the end of the 19th century, Khulda was described as a large village, built of stone and mud, situated on a hill.

The rivers provided the further benefits of fish (used both for food and fertilizer), reeds, and clay (for building materials).

This is perhaps the most primitive shanty that you can find in Kibera, little more than a stick and mud hut next to a garbage heap.

Over time, massive amounts of sediment (sand, soil, and mud) from North and South America filled the gaps between the newly forming islands.

Typical for pyramids of the Middle Kingdom, the Black Pyramid, although encased in limestone, is made of mud brick and clay instead of stone.

As the city grew, this aqueduct was no longer able to provide enough water of sufficient quality the springs contained a small amount of silt in the summer, and sometimes even ran dry.

A wide range of open cast alluvial sites of all sizes, from class C bucket and spade enterprises to extensive, high investment class B operations with the potential for development to class A

Murray Gell Mann Well, I would guess that modern language must be older than the cave paintings and cave engravings and cave sculptures and dance steps in the soft clay in the caves in Western Europe, in the Aurignacian Period some 35,000 years ago, or earlier.