Geo News Bites
It’s one of those mornings where everything looks shiny and interesting – everything but the stuff I’m supposed to be working on. And wouldn’t you know it, the Earth and Planetary Science Letters RSS feed just dumped a couple of issues on me. Surely I can at least blurb the interesting titles? It will be a prize for finishing my timed bouts of real work.
Sorry about the Elsevier paywalls. It couldn’t be helped.
- They poured honey into a sandbox – for Science! L. Mathieu and B. van Wyk de Vries, Dykes, cups, saucers and sills: Analogue experiments on magma intrusion into brittle rocks
- The “inner inner core” paper is making headlines, apparently on the basis of this murky press release. But if you start revising your middle-school earth science textbooks based on just a single tomographic anisotropy model of the inner core, well… you’ll probably make a lot of money by putting out new revised editions every few months. Xinlei Sun and Xiaodong Song, The inner inner core of the Earth: Texturing of iron crystals from three-dimensional seismic anisotropy
- It’s easy to see how subduction zones can drag rocks deep into the earth, but why do some of those rocks pop back up again so quickly? New models suggest that sometimes, when a subduction zone tries to swallow a piece of buoyant material, it makes the whole system stagger backwards and burp. Jean-Pierre Brun and Claudio Faccenna, Exhumation of high-pressure rocks driven by slab rollback.
- How long did it take to go from a hellish magma ocean to respectable continents? Not very long at all. T. Mark Harrisona, Axel K. Schmitta, Malcolm T. McCullochb and Oscar M. Loveraa, Early (?4.5 Ga) Formation of Terrestrial Crust: Lu-Hf , ?18O, and Ti Thermometry Results for Hadean Zircons.