The fourth and final event occurred quite recently, geologically speaking.

This was a busy part of the planet, geologically speaking.

Lake Erie in its current form is less than 4,000 years old, a short amount of time geologically speaking.

Geologically speaking, any crater less than a million years old is an infant, born yesterday.

Geologically speaking, it's very possible more parts of the cave could be discovered that would double its size.

Geologically speaking, this is known as an area of high-energy.

Their age does not, therefore, go back to earlier geological periods; they belong to our times, geologically speaking.

The two hundred miles between us and Victoria is a faulty region, geologically speaking.

Geologically speaking, the third and fourth planets in this system are identical.

To all appearances this is a young formation that was created in the relatively recent past, geologically speaking.