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From the geoblogosphere – dikes and tsunamis 9 October 2008

Posted by admin in blogs, geoblogosphere, geoscience.
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A couple of very interesting new geoblogosphere posts of strong volcanic interest:

Dike swarms and continental barcodes from Highly Allocthonous – the ‘magnetic barcodes’ of dikes in now separate continental fragments can be matched up, showing that at the time the dikes were created the fragments in question were in close enough proximity to be affected by the same episode of igneous intrusion.

Volcanic flank collapse and tsunamis from Dave’s Landslide Blog – a discussion of the Tongatapu boulders, possibly the largest tsunami debris yet identified, the result (it is argued) of a submarine volcanic eruption and flank collapse. 

The Volcanism Blog

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