What is an example of a geologic formation?

Examples of these geological formations which form aquifers include sandstone, conglomerate, fractured limestone, and unconsolidated sand and gravel formations. Another example of an aquifer system is a fractured volcanic rock formation such as columnar basalt.

What is a geologic formation quizlet?

A formation or geological formation is the fundamental unit of lithostratigraphy. A formation consists of a certain number of rock strata that have a comparable lithology, facies or other similar properties.