Debut of “Off the shelf edge”, WoGE # 297

Well, I have been thinking about making a blog for a while, mainly because I am inspired by lots of good geo-blogs out there (for a weekly list, go here).  I hope to be on that list one day, but let’s take it easy for now. The first order of business is revealing the next Where on Google Earth (WoGE).

WoGE # 296 was hosted by Hindered Settling, and I recognized the outcrop immediately without even searching thru Google Earth.  By chance, I had recently been looking at the Montagne de Chalufy onlap, which is described in poster form nicely here. Basically, the onlapping sandstones shown in the image below are turbidites onlapping the margin of a foreland basin – see the poster for a nice explanation about basin tectonics and topography.

So, drumroll…. Here it is, WoGE #297!  I dont think this one will be too easy, so Schott rule NOT invoked.  As you can see, the view is NNE and slightly oblique (i.e. not looking straight down).  For a nice overview of the rules (which I had to consult, as I was a first time winner), go here. For a larger view, click on the image.

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7 thoughts on “Debut of “Off the shelf edge”, WoGE # 297

  1. Congratulations to your new blog and your first Woge win. With your picture it’s interesting to see, how the limestone mountains I’m living in, would look like in a more arid climate.

    31.1541°N, 104.3804°W: Capitan Reef (Capitan Limestone), West Texas, outcrop in the Apache Mountains.
    The Capitan Reef Complex forms a horseshoe shaped feature in the Permian Delaware Basin and consists of massive fossiliferous white limestone. The Capitan Limesone has been deposited in the Permian/Guadalupian. The reef had an impressive diameter of roughly 150 km. The ‘Stocks Fault’ dissects the Apache Mountains with Capitan outcrop on the southwest up-thrown side and Capitan rocks downthrown on the northeast side overlain by younger strata. The displacement is around 330m. I think we see the west-northwest trending fault in the upper part of our picture. The Delaware Basin was a foreland basin created when the Ouachita mountains were uplifted as Gondwana collided with Laurasia during the Pennsylvanian period.

    All this can be found here: http://www.twdb.state.tx.us/RWPG/rpgm_rpts/0804830794CapitanReef/Final%20Revised%20Capitan%20PDF%20w_Seals.pdf

    If I am declared to be the winner of this challenge, I’m going to publish the next one at Friday, around 22.00 GMT. Now it’s toooo late.

  2. Congrats to Felix! He nailed it. This area of the Capitan reef is correlable to the famous exposures in the Guadalupe Mountains to the north, but in the Apaches, most of the fore-reef facies are poorly exposed, but the back-reef (Yates, Tansill, and Seven Rivers fms) are all well exposed and very interesting. All of these formations are that are famous oil reservoirs further east in the Permian basin. Oh, and by the way, this area is my family ranch, where I grew up 🙂

  3. Pingback: The flying geologist’s summer 2011 vacation « offtheshelfedge

  4. Pingback: Where on Google Earth (WoGE) #333: Modern coastal system! « off the shelf edge

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