Re: [Utah-astronomy] More on Upheaval Dome
Canyonlands certainly has no shortage of unique features not seen anywhere else. --- canopus56@yahoo.com wrote: From: Canopus56 <canopus56@yahoo.com> To: Utah Astronomy List Serv <utah-astronomy@mailman.xmission.com> Subject: Re: [Utah-astronomy] More on Upheaval Dome Date: Tue, 27 Jan 2009 16:27:07 -0800 (PST) Jim wrote:
While reading your comments and some of the articles I was wondering how many examples of salt dome’s there were. From this one statement If true, "Upheaval Dome would earn the distinction of being the most deeply eroded salt structure on earth." It would seem that the salt school guys are going to have to come up with extraordinary evidence to back this extraordinary claim.
I don't know of specific examples for Utah; I'm not a geologist. But we have enough geologists and petroleum exploration geologists on this list to answer that. The Paradox Formation beneath canyonlands is a classic example of a salt layer that is the source that forms salt domes. The salt rises from below into a diapir with dome sprouting out the top like a mushroom head. http://en.wikipedia.org/wiki/File:Salt_dome_hg.png http://en.wikipedia.org/wiki/Salt_dome The wikipedia entry for "salt dome" has a picture of an "emergent salt dome" near Fisher Towers in Moab. http://en.wikipedia.org/wiki/File:Ken_Leonard_-_Fisher_Towers_-_Salt_Dome_P_... http://en.wikipedia.org/wiki/File:Ken_Leonard_-_Fisher_Towers_-_IMAG0059.JPG The Fisher Towers salt dome is newly forming, e.g. - emergent. The most cited classic dome example that I have seen (when I was hunting for salt dome images a few months ago) is the Kuh-e-Namak in Iran http://earthobservatory.nasa.gov/IOTD/view.php?id=6465 The Kuh-e-Namak is a salt dome in mid-life. It's fully formed and is now being eroded away, as you can see from this side view: http://www.beg.utexas.edu/news-events/news-archive2/jackson_iran_02-2004.htm There are even "salt glaciers" coming off the thing. Who would have thunk such a thing existed - salt glaciers? Considering the Fisher Towers emergent salt dome, of which I was not aware of previously, it seems the old geologic consensus that Upheaval is an eroded salt dome is not that far out of an idea. Why look for randomn rocks falling out of the sky when you can see another cause right in front of you doing the same thing in real time? As the Huntoon article says, the Dome is kind of a geologic Rorschat Blot. "[B]ut this is not simply a debate about different processes, rather it reflects deeper philosophical divisions", citing those that in their gut believe in geologic uniformism governed by slow processes and those who are willing to accept random catestrophic acts as a force of nature. Although on first impression Upheaval has always looked like an impact crater to me because of the dual concentric ringwalls. Come' on. It obviously looks like an impact crater. But here's a picture of another crater like bowl shape - dug out of gypsum by the wind - and that has nothing to do with a meteor impact - Richat Structure, Mauritania. 48 km dia. NASA Image of the Day. url: http://www.nasa.gov/multimedia/imagegallery/image_feature_528.html And another well known local hole in the ground that is about a kilometer bigger than Upheaval's 3km diameter - http://earthobservatory.nasa.gov/IOTD/view.php?id=8144 What that caused that "crater"? - Kurt _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com
I've missed some of this thread, and my memory may be faulty, but I thought that microscopic shocked quartz was first documented at Upheaval Dome by Gene Shoemaker, perhaps 20 years or so ago. I don't recall now where I learned that. Anyone else? Kim -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of zaurak@digis.net Sent: Wednesday, January 28, 2009 10:05 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] More on Upheaval Dome Canyonlands certainly has no shortage of unique features not seen anywhere else. No virus found in this outgoing message. Checked by AVG. Version: 7.5.552 / Virus Database: 270.10.15/1921 - Release Date: 1/28/2009 6:37 AM
Kim, Interestingly enough I moused over the words “shock quartz” in your post and a link to Wikipedia came up which relates the following with mention of Eugene Shoemaker: Shocked quartz is a form of quartz that has a microscopic structure that is different from normal quartz. Under intense pressure (but limited temperature), the crystalline structure of quartz will be deformed along planes inside the crystal. These planes, which show up as lines under a microscope, are called planar deformation features (PDFs), or shock lamellae. Shocked quartz was discovered after underground nuclear bomb testing, which caused the intense pressures required to form shocked quartz. Eugene Shoemaker showed that shocked quartz is also found inside craters created by meteor impact, such as the Barringer Crater.[1] The presence of shocked quartz proves that these craters were formed by an impact: a volcano would not generate the pressure required. Jim --- On Wed, 1/28/09, Kim <kimharch@cut.net> wrote: From: Kim <kimharch@cut.net> Subject: Re: [Utah-astronomy] More on Upheaval Dome To: "'Utah Astronomy'" <utah-astronomy@mailman.xmission.com> Date: Wednesday, January 28, 2009, 10:15 AM I've missed some of this thread, and my memory may be faulty, but I thought that microscopic shocked quartz was first documented at Upheaval Dome by Gene Shoemaker, perhaps 20 years or so ago. I don't recall now where I learned that. Anyone else? Kim -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of zaurak@digis.net Sent: Wednesday, January 28, 2009 10:05 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] More on Upheaval Dome Canyonlands certainly has no shortage of unique features not seen anywhere else. No virus found in this outgoing message. Checked by AVG. Version: 7.5.552 / Virus Database: 270.10.15/1921 - Release Date: 1/28/2009 6:37 AM _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com
I found the following citation for Shoemakers findings but I couldnt find the text online: Shoemaker, E.M., and Herkenhoff, K.E., 1983, Impact origin of Upheaval Dome, Utah: Eos (Transactions, American Geophysical Union), v. 44, p. 747. -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Jim Gibson Sent: Wednesday, January 28, 2009 10:38 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] More on Upheaval Dome Kim, Interestingly enough I moused over the words shock quartz in your post and a link to Wikipedia came up which relates the following with mention of Eugene Shoemaker: Shocked quartz is a form of quartz that has a microscopic structure that is different from normal quartz. Under intense pressure (but limited temperature), the crystalline structure of quartz will be deformed along planes inside the crystal. These planes, which show up as lines under a microscope, are called planar deformation features (PDFs), or shock lamellae. Shocked quartz was discovered after underground nuclear bomb testing, which caused the intense pressures required to form shocked quartz. Eugene Shoemaker showed that shocked quartz is also found inside craters created by meteor impact, such as the Barringer Crater.[1] The presence of shocked quartz proves that these craters were formed by an impact: a volcano would not generate the pressure required. Jim --- On Wed, 1/28/09, Kim <kimharch@cut.net> wrote: From: Kim <kimharch@cut.net> Subject: Re: [Utah-astronomy] More on Upheaval Dome To: "'Utah Astronomy'" <utah-astronomy@mailman.xmission.com> Date: Wednesday, January 28, 2009, 10:15 AM I've missed some of this thread, and my memory may be faulty, but I thought that microscopic shocked quartz was first documented at Upheaval Dome by Gene Shoemaker, perhaps 20 years or so ago. I don't recall now where I learned that. Anyone else? Kim -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of zaurak@digis.net Sent: Wednesday, January 28, 2009 10:05 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] More on Upheaval Dome Canyonlands certainly has no shortage of unique features not seen anywhere else. No virus found in this outgoing message. Checked by AVG. Version: 7.5.552 / Virus Database: 270.10.15/1921 - Release Date: 1/28/2009 6:37 AM _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com No virus found in this incoming message. Checked by AVG. Version: 7.5.552 / Virus Database: 270.10.15/1921 - Release Date: 1/28/2009 6:37 AM No virus found in this outgoing message. Checked by AVG. Version: 7.5.552 / Virus Database: 270.10.15/1921 - Release Date: 1/28/2009 6:37 AM
Hi Friends -- Kurt, Howard, the meteor and Canyonlands are in my blog today. Pls pay it a visit, and if you would like discuss it there as well as here, feel free. Just go to this site http://deseretnews.com/blogs/ and then click on the guy with the telescope. Thanks, Joe
Hi, The wonderful new SLAS gallery is the subject of my blog today. Pls click on the odd fellow in this lineup: http://deseretnews.com/blogs/ Thanks, Joe
Joe, Another good hi-quality piece there. Good job. Jim --- On Fri, 1/30/09, Joe Bauman <josephmbauman@yahoo.com> wrote: From: Joe Bauman <josephmbauman@yahoo.com> Subject: [Utah-astronomy] The New SLAS Gallery To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Friday, January 30, 2009, 12:32 AM Hi, The wonderful new SLAS gallery is the subject of my blog today. Pls click on the odd fellow in this lineup: http://deseretnews.com/blogs/ Thanks, Joe _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com
Many thanks! -- Joe --- On Fri, 1/30/09, Jim Gibson <jimgibson00@yahoo.com> wrote: From: Jim Gibson <jimgibson00@yahoo.com> Subject: Re: [Utah-astronomy] Joe's Blog To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Friday, January 30, 2009, 7:30 AM Joe, Another good hi-quality piece there. Good job. Jim --- On Fri, 1/30/09, Joe Bauman <josephmbauman@yahoo.com> wrote: From: Joe Bauman <josephmbauman@yahoo.com> Subject: [Utah-astronomy] The New SLAS Gallery To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Friday, January 30, 2009, 12:32 AM Hi, The wonderful new SLAS gallery is the subject of my blog today. Pls click on the odd fellow in this lineup: http://deseretnews.com/blogs/ Thanks, Joe _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com
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