Colombia is an utterly magical place and the geology is awe-inspiring. If you haven’t visited yet, make a booking. Today. Especially if you are a geologist. We’ve recently published a paper* on the Late Cretaceous (possibly Paleocene) Guaduas Formation in the Eastern Cordillera Basin. The formation is consistently organic–rich and coal beds are common and […]
Of all the particles in a sedimentary basin, organics are arguably the most insightful. Think about it: they tell you how hot things got, millions and millions of years ago, and that is both within the basin at depth but also at the surface when they were deposited; they tell you what plants were evolving; […]
The lyrics of Neil Young* were going through my head as we trundled down the decline of a mineshaft at 3000 m elevation. We had left the brilliant blue skies of the Andean cordillera moments before, plunging into the darkened tunnel; we were headed for the Guaduas Formation (Late Cretaceous – Paleocene), which contains some […]