The amazing disappearing asymmetric magnetic reversals
Category: geology
Weird field behaviour in the Neoproterozoic vanishes when you add more data to the mix.
Posted by Chris Rowan at 12:00 PM • 7 Comments •
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Chris Rowan is a geologist specialising in the dark arts of paleomagnetism, and getting people to pay him to travel to exotic destinations for fieldwork. Having drilled up New Zealand during his PhD, and South Africa in his first post-doc, he now works at the University of Edinburgh.
Anne Jefferson has a love of all things water-related and blends hydrology, geomorphology, geology, and climate change in her work. She has a Ph.D. from Oregon State University and is now an assistant professor at the University of North Carolina at Charlotte.
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past worlds:
Lots of oxygen on the Archean Earth?
Category: geology
New evidence for the early evolution of photosynthesis: was the early Earth really as oxygen-free as we think it was?
Posted by Chris Rowan at 7:30 AM • 18 Comments •
The Lake Missoula megafloods
Category: outcrops
the massive floods that shaped the topography, soils, and agriculture of the Pacific Northwest.
Posted by Chris Rowan at 11:50 AM • 13 Comments •
Supercontinent cycles 3, Expanding Earth 0
Category: tectonics
I have one word for expanding-earthers: Avalonia.
Posted by Chris Rowan at 11:05 AM • 55 Comments •
What do you know about the Snowball Earth?
Category: public science
An informal poll - please respond.
Posted by Chris Rowan at 10:48 AM • 70 Comments •
The Stirling fauna: big critters from the dawn of time?
Category: fossils
I really wasn't intending to leave Geopuzzle 14 hanging out unanswered on the interweb for as long as it has - and not just because my delay has apparently put my beer stash in jeopardy. The answer is actually both...
Posted by Chris Rowan at 7:53 AM • 6 Comments •
Geopuzzle #12 (finally) revisited
Category: geopuzzling
The answer? I dunno...
Posted by Chris Rowan at 11:33 AM • 3 Comments •
Pangaea Day, geology-style
Category: geology
A brief geographic trip into the late Triassic.
Posted by Chris Rowan at 10:49 AM • 0 Comments •
What's up with those Archean sandstones?
Category: geology
In addition to searching out evidence for Archean microbial mats, my revisitation of the Pongola sandstones gave me the chance to look a bit more closely at their lithology. When I last posted pictures from this sequence, there was a...
Posted by Chris Rowan at 10:34 AM • 7 Comments •
Archean bacterial mats under the hammer
Category: geology
Geovandalism rears it's ugly head once more.
Posted by Chris Rowan at 11:25 AM • 5 Comments •
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