Monthly Archives: January 2011

The making of an angular unconformity: Hutton’s unconformity at Siccar Point

Posted on January 27, 2011 by Chris Rowan

Photos and video from a geo-pilgrimage: an in-depth look at Hutton’s Unconformity, and the geological history that it represents. Continue reading →

Categories: deep time, geology, outcrops, Palaeozoic, photos, structures

New at Erratics: from lahar to suevite

Posted on January 26, 2011 by Chris Rowan

In his second post at Earth Science Erratics Simon Wellings reveals a rather interesting deskcrop, collected from Scotland in his youth: Since it was picked up, this rock has changed identities: what was once thought to be a mud flow … Continue reading →

Categories: planets, Proterozoic, rocks & minerals

Geology is destiny: globally mapping permeability by rock type

Posted on January 25, 2011 by Anne Jefferson

The first maps of the global distribution of the ease of subsurface water flow have been produced, and they are based on maps of rock type. Continue reading →

Categories: by Anne, geology, hydrology, paper reviews