They are records of human and geological history.

To understand, a quick primer on geological history may be useful.

Wood explains this by pointing to the geological history of the respective regions.

One scientist described it recently as 'one of the great extinction spasms of geological history'.

It may seem strange to link climate with volcanoes, but previous work has shown in geological history that when glaciers melt, they reduce the pressure on continents.

Just get a geological map and walk around looking down.

His extensive investigations furnished him with ample material for improving his geological map, and the second edition was published in 1835.

Then he estimated the boundaries of each of the outcrops of rock, filled them in with colour and ended up with a crude geological map.

From 1811 onwards, he lectured on geology all over the country, exhibiting sections of rock formation and a geological map, the first of its kind.

He compulsively records his day in the form of geological maps, so he can go back and look for systems and patterns.

This geological phenomenon marks the location where rock formations created at different times and by different forces adjoin.

Symbolism also attributes that evolution from water could relate to the geological phenomenon of the tectonic age.

Its waters show a permanent stratification due to a natural geological phenomenon.

They are unlike any terrestrial geological phenomenon.

By pure chance, they were witnessing the immediate aftermath of an underwater eruption, one of the planet's most important and least well observed geological phenomena.

Oxidation of sulfide deposits occur during the geological process called weathering.

For the scientific community, however, it was a chance to study the evolving geological process of a mud volcano.

The exhibition shows various aspects; from the geological process of creation to production, and use of the stone larvikite, the area's main export product.

The coastlines near these areas are typically very irregular, reflecting the same geological process.

Much smaller, and the heat and pressure generated are inadequate for the necessary geological processes.

The geological record tells us that many of those explorers who saw a desert arrived in drought years.

But collectively we will have rewritten the geological record, and as the author concludes, 'it would be immortality cruelly won'.

Researchers believe that it may become a permanent part of the planet's geological record.

Of the many rhythmites found in the geological record, varves are among the most important and illuminating to studies of past climate change.

The enhanced classification of artificial ground as a tool to investigate and represent anthropogenic processes in the recent geological record.

It's like drilling down through layers of geological strata made up of secrets and subterfuge, dealing and double-dealing.

The 110 floors are so compressed they look like geological strata.

He was interested in the romance of peeling billboard signs and crisp wooden walls, layered like geological strata.

A problem with launching from the harbour site, was caused by the shallow angle of the underlying geological strata.

Despite both water sources being physically close to each other, they remain independent and separated by geological strata.

The southern basin has a different geological structure.

The geological structure was formed by the impact of a meteorite 214 million years ago.

The coastal mountains vary greatly in geological structure.

The exploration of the underlying geological structure in his home country and dissemination of research results was his goal.

Its orography and geological structure are imperfectly known.