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Posts:

The 10 most frequently clicked posts:

What Makes a Sinkhole a Sinkhole?

GeoPrac.net [2010-04-24 01:12:00]   recommend this post  (1072 visits)

The Florida Geological Survey probably deals with more sinkholes than most agencies. The most frequent geologic cause of sinkholes is dissolution of limestone and other soluble rocks and the collapse of the soil cover over them. However, there are [...]

Calcite Replacement

Ammonoidea [2010-04-19 00:10:00]   recommend this post  (926 visits)

Calcite replaced ammonoid shell(is that really angular coiling in the umbilicus?)another showing partial suture

Blog-Teleskop Nr. 50

And the Water seems inviting [2010-04-23 16:24:39]   recommend this post  (907 visits)

Nun ist es endlich da, fast eine Woche zu spät. Ursprünglich schon lange für den letzten Sonntag vorgesehen, haben sowohl Florian als auch ich das Teleskop Nr. 50 völlig vergessen, Verzeihung! Also - viel Spaß! In der Astronomie ist so [...]

Blog housekeeping: images and e-mails

The Volcanism Blog [2010-04-18 11:21:30]   recommend this post  (871 visits)

The image hosting problem should be sorted out over the next couple of days: thanks to everyone who has made suggestions and especially to those who have very generously offered hosting space. I shouldn’t need to take up those offers now, but [...]

Giant Eurypterid Trackway Found in UK

Geology.com News [2010-04-21 04:00:59]   recommend this post  (858 visits)

The tracks of a giant eurypterid called Hibbertopterus have been found in 330 million year old rocks in the UK. It is the largest known trackway of its kind and the size suggests that Hibbertopterus was about two meters long and one meter

Webisode: Space is an Open Book Exam [Hubble 3D]

BEYONDbones [2010-04-23 21:53:34]   recommend this post  (856 visits)

Tomorrow is the 20th anniversary of the launch of the Hubble Telescope. To celebrate 20 years of amazing images and deep-space discovery, we’ve got an all-new Hubble 3D webisode! Check it out below for a fascinating tour of the space shuttle [...]

Photos of geological structures - SW Portuguese coast (#2): boudins

The Lisbon Structural Geologist [2010-04-23 22:33:00]   recommend this post  (835 visits)

Imagine a geological sandwich of a competent (high viscosity) layer of rock, interbedded within two low competent (low viscosity) ones. Fig.1 - Chocolate tablet boudinage pattern in Carboniferous sandstone (Almograve beach, SW Portuguese [...]

Photographs of Lightning in Eyafallajokull’s Eruption Cloud

Geology.com News [2010-04-18 03:19:28]   recommend this post  (823 visits)

Here is a photo gallery that includes images of lightning in the Eyjafjallajökull eruption

Oil Resources Dwindling by 2015?

Geology.com News [2010-04-19 02:17:37]   recommend this post  (810 visits)

The “Joint Operating Environment” report from the U.S. Joint Forces Command speculates that oil shortages could begin as early as 2015. “By 2012, surplus oil production capacity could entirely disappear, and as early as 2015, the [...]

Sea-Floor Sunday #63: Bathymetric maps in vicinity of Eyjafjallajokull volcano

Clastic Detritus [2010-04-18 18:20:53]   recommend this post  (779 visits)

I’m using this week’s Sea-Floor Sunday to show a few simple maps of the region around the erupting Eyjafjallajokull volcano in Iceland. I don’t have a photographic memory of the Earth’s surface so I always like to remind [...]