The most typical occurrence of these fossils is in dark, often sooty, black shales.

The other indicators mentioned, such as active fumaroles and recently discovered faults, are typical occurrences at this type of volcano.

We will look at some typical occurrences; no examples of extra pitch height will be considered here.

Its typical occurrence is in shales that have undergone low grade metamorphism.

A hypothetical situation or story used to illustrate the typical occurrence of a structural pattern.

Inventory levels fell sharply, a typical occurrence in December.

Another occurrence less typical of the aftermath of other natural disasters was the looting.

A cold front can push the marine layer coastward, an occurrence most typical in the spring or late fall.

I think that the problems we are discussing today are middle class problems, which is a fairly typical occurrence in the current political climate.

"Just a short workout," he said, as if it were a typical occurrence.