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6 May 2022

Book report

Underfoot: A Geologic Guide to the Appalachian Trail, by V. Collins Chew Published in 1988 by the Appalachian Trail Conference, this volume is a very AT-focused look at east coast geology. It’s also out of date, and a little hand-wringing when it comes to making clear conclusive statements about the arc of geologic history. The summary of geologic events is written for the beginner, not the professional. There’s lots of …


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19 October 2015

The Martian, by Andy Weir

There’s a lot of talk about this book lately, since they just made it into what I’m told is a very good movie. I heard the scuttlebutt and watched the preview for the film, and when the protagonist/narrator said “I’m going to have to science the shit out of this,” I knew this was probably a story for me. I was lucky to score a copy of the audiobook from …


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19 November 2010

Is this an angular unconformity on Mars?

Jason Buchheim, one of the people I met last week in Pittsburgh, just posted a Gigapan of images stitched together from the Mars Observer MER HiRise. Part of it jumped out at me as being similar to the map pattern we see on Earth where an angular unconformity outcrops: Here, I’ve highlighted the pattern which caught my eye: On the other hand, the increasing inflection of the “lower” (in the …


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