Geologic Activity Quotes

The 2008 election settled nothing, not even for a while. Our national politics are reflecting what appears to be going on geologically, on the bottom of the oceans and beneath the crust of the Earth: the tectonic plates are moving.

The Huygens images were everything our images from orbit were not. Instead of hazy, sinuous features that we could only guess were streams and drainage channels, here was incontrovertible evidence that at some point in Titan's history - and perhaps even now - there were flowing liquid hydrocarbons on the surface.

The geysers and hot springs of the Yellowstone are another proof of recent volcanic activity.

We trace out all the veins of the earth, and yet, living upon it, undermined as it is beneath our feet, are astonished that it should occasionally cleave asunder or tremble: as though, forsooth, these signs could be any other than expressions of the indignation felt by our sacred parent!

Earthshaking fire from the center of the Earth will cause tremors around the New City. Two great rocks will war for a long time, then Arethusa will redden a new river.

Before we understood that houses shift just over time because the ground is moving, the creaks in a house were assumed to be apparitions, or ghosts. Before we understood that we live on a planet, and there are others, the only answers to where we came from had to be something supernatural.

The nature of catastrophe is, after all, reasonably unvarying in the way it ruins, destroys, wounds and devastates. But if something can be learned from the event - not least something as profound as the theory of plate tectonics - then it somehow puts the ruination into a much more positive light.

Even by the diverse standards of Saturn's satellites, Enceladus was an outlier. Its icy surface was as white and bright as fresh snow, and whereas the other airless moons were heavily pocked with craters, Enceladus was mantled in places with extensive plains of smooth, uncratered terrain, a clear sign of past internally driven geologic activity.