Category Archives: geochronology

He Thermochronology Reading List

I was always jealous of geoscientists who started their education in the 70’s; for them, there was only a 10 year backlog of plate tectonics relevant geoscience literature to catch up with. Even under sane circumstances it gets harder and harder … Continue reading

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The Partial Retention Zone

One of the most important concepts in thermochronology is the Partial Retention Zone (PRZ for short, referred to as the Partial Annealing Zone in the fission-track world). The term PRZ is used to refer to a variety of things, all … Continue reading

Posted in (U-Th)/He, dealing with data, geochronology, Primers, thermochronology, Uncategorized | Leave a comment

Geochronology Short Course at GSA 2014

As a graduate student in 2005 I was lucky enough to attend a Thermochronology Short Course sponsored by the Mineralogical Society of America. It was a 2 day event at Snowbird, a ski resort outside of Salt Lake City, just … Continue reading

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Thermochronology

This morning I was looking for a post I thought I’d written years ago to help explain the fundamentals of thermochronology. Although I have posts on 40Ar/39Ar and (U-Th)/He thermochronology, turns out I’ve never written a more basic post on the … Continue reading

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John Perry, Lord Kelvin, and radioactive decay

I’ll admit I am behind on Cosmos. I’ve watched some of the originals on Netflix, and plan on binge watching the Neil deGrasse Tyson version soon. Tyson is one of the best ambassadors of science we’ve heard from in a long time, … Continue reading

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The Great M&M Experiment

Teaching about radioactive decay and geochronology has its challenges. I think it is important to include in introductory courses, and I’ve tried a variety of exercises and techniques to try to convey some of the more important aspects. My goals are … Continue reading

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Picking Apatites for (U-Th)/He Thermochronology

Since its reintroduction in the mid 1990’s, apatite (U-Th)/He thermochronology has become a widely used and reliable method for understanding upper crustal thermal histories. The technique has been used on a wide range of lithologies to help understand an enormous … Continue reading

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Thermo 2014 – Chamonix

I went to my first International Conference on Thermochronology in 2008, when the meeting was held in Anchorage. This was during the waning days of my first blogging attempt, but I managed to publish four write-ups, and lots of pictures. … Continue reading

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The York Fit, MSWDs, and Geochronology

I am by no means a statistician. There are a variety of tests and techniques I use, most of which I mostly understand. This post is about one of those techniques that I became familiar with while working in 40Ar/39Ar … Continue reading

Posted in dealing with data, geochronology, Primers, thermochronology, Uncategorized | 7 Comments

The Times about time: Geochronology themed article in the NY Times

No real analysis here, but I’d like to draw your attention to this recent article by Kenneth Chang in the New York Times about recent work that might shed light on the very early earth. I am highlighting the article … Continue reading

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