The volume is divided into two parts, physical geology and historical geology.

But historical geology alone could never have led to the dynamical phase of modern biology.

But, for that matter, the entire subject of historical geology is one that had but the barest beginning before our century.

All these puzzling features unite to render the subject of historical geology anything but the simple matter the fathers of the science esteemed it.

Their sentences flash up on screen and seem to add up to a geological age.

It's a useful lesson in a geological age referred to by scientists as the anthropocene.

We are virtually dealing with a past geological age.

A Manwantara is a very long period of time, not unequal to a geological age.

There is little doubt now that we have entered a new geological age, believes an international scientific panel.

Let's take probably one of the most famous boundaries in the geological time scale as an example.

Many probematica are useful as index fossils, used to define and delineate boundaries in the geological time scale.

The geological time scale is a way of measuring the Earth's 4.6 billion year history in manageable -and meaningful -chunks.

Punctuated equilibrium addresses the origin and deployment of species in geological time.

By the standards of geological time, the lizards were now changing rapidly.

On the scale of geological time it may be called a revolution.

If such exists, we must search for them further back in geological time.

It is a theory about larger-scale patterns-thegeometry of speciation in geological time.