geology question: is there a term for these sort of incision marks on river cobbles? | |
Thomas Cruciamen
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Thomas Cruciamen
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Thomas Cruciamen
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Thomas Cruciamen
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Sentio
User ID: 76939846 United States 10/16/2020 07:45 PM Report Abusive Post Report Copyright Violation | . . Not sure. I know the glaciers caused lots of scars. . Glacial striation? . Last Edited by Sentio on 10/16/2020 07:46 PM |
Sentio
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Thomas Cruciamen
User ID: 70026252 United States 10/16/2020 07:55 PM Report Abusive Post Report Copyright Violation | That is shocked stone. You can see where sections of the stone became partially molten and bulged rather than broke. This is the only manner in which a stone broken thusly would ever be fused back together again following such fracturing. |
Thomas Cruciamen
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Thomas Cruciamen
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Anonymous Coward (OP) User ID: 79314612 Canada 10/16/2020 09:28 PM Report Abusive Post Report Copyright Violation | in the meantime, a few more that i did bother bringing home at one time/outing or another for my own fancyful bemusement [link to imgur.com (secure)] [link to imgur.com (secure)] peace be with you |
Anonymous Coward (OP) User ID: 79314612 Canada 10/16/2020 10:00 PM Report Abusive Post Report Copyright Violation | |
Zovalex
User ID: 77432258 United States 10/16/2020 10:47 PM Report Abusive Post Report Copyright Violation | Traveling Route 93 in Arizona, I stopped to climb on some very large boulders that had the same formation. They looked like they had been superheated, became semi-liquid forming bulges with smooth round curves, but developing cracks and striations when cooling. Massive piles of such rocks in the middle of nowhere, as if they were asteroid debris that had fallen to earth thousands of years ago. . “Mental slavery is the worst form of slavery. It gives you the illusion of freedom, makes you trust, love, and defend your oppressor, while making an enemy of those who are trying to free you or open your eyes.” -Fiyah “None are more hopelessly enslaved than those who falsely believe they are free.” -Johann Wolfgang von Goethe “You have been programmed to resist the very person that is here to set you free, from the prison of your Mind... You are not free... everything you are has been manufactured by Minds that have not your best interest. You are imprisoned by beliefs and not reality. Religions are mental programs to imprison your Mind.” -SOL |
Anonymous Coward (OP) User ID: 79314612 Canada 10/16/2020 11:28 PM Report Abusive Post Report Copyright Violation | Traveling Route 93 in Arizona, I stopped to climb on some very large boulders that had the same formation. They looked like they had been superheated, became semi-liquid forming bulges with smooth round curves, but developing cracks and striations when cooling. Quoting: Zovalex Massive piles of such rocks in the middle of nowhere, as if they were asteroid debris that had fallen to earth thousands of years ago. . very interesting. arizona is a bit removed from eastern canada as far as the glacial epochs go, from what i understand. perhaps any link(s) between the two do indeed go further back or beyond any relatively recent surfacd events? hmm |
Thomas Cruciamen
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Thomas Cruciamen
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Thomas Cruciamen
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Thomas Cruciamen
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Thomas Cruciamen
User ID: 69256421 United States 10/17/2020 02:08 PM Report Abusive Post Report Copyright Violation | Traveling Route 93 in Arizona, I stopped to climb on some very large boulders that had the same formation. They looked like they had been superheated, became semi-liquid forming bulges with smooth round curves, but developing cracks and striations when cooling. Quoting: Zovalex Massive piles of such rocks in the middle of nowhere, as if they were asteroid debris that had fallen to earth thousands of years ago. . very interesting. arizona is a bit removed from eastern canada as far as the glacial epochs go, from what i understand. perhaps any link(s) between the two do indeed go further back or beyond any relatively recent surfacd events? hmm When considering the exceptionally massive flooding from an ice sheet struck multiple times scenario something like that could have easily been carried by the water. It was shocked, thus fused into its position by the heat generated in the tiny fraction of a second and swept away soon after. I think it scoured the central U.S. from Gulf coast to the Great Lakes. The Lake Missoula floods I believe were part of the same event. Sverdrup; "..oceanography, a sverdrup is a non-SI metric unit of flow, with 1 Sv equal to 1 million cubic metres per second; it is equivalent to the SI derived unit cubic hectometer per second. It is used almost exclusively in oceanography to measure the volumetric rate of transport of ocean currents" That said, a formation such as what was mentioned earlier could easily be a seperate incident too. |
Anonymous Coward (OP) User ID: 79314612 Canada 10/17/2020 07:37 PM Report Abusive Post Report Copyright Violation | alright alright............. ................................................. ...........pretty much right along the diving lines of madawaska and victoria counties ...there's what once used to be a grand-er sight of rushing and crashing waters situated in the middle of all this that might or might not have any defining feature, clue or role in finding resolution to what you seek to answer.... but it's always fun looking nonetheless, eh [link to imgur.com (secure)] [link to imgur.com (secure)] |
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Ricky Retardo
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Thomas Cruciamen
User ID: 69256421 United States 10/18/2020 10:56 AM Report Abusive Post Report Copyright Violation | alright alright............. Quoting: Anonymous Coward 79314612 ................................................. ...........pretty much right along the diving lines of madawaska and victoria counties ...there's what once used to be a grand-er sight of rushing and crashing waters situated in the middle of all this that might or might not have any defining feature, clue or role in finding resolution to what you seek to answer.... but it's always fun looking nonetheless, eh [link to imgur.com (secure)] [link to imgur.com (secure)] Indeed it is fun looking. Thanks for sharing! |
Torchie
User ID: 78830262 United States 10/18/2020 11:12 AM Report Abusive Post Report Copyright Violation | I bit some like that they were in the pasture when I was grazing. untying the shoelaces of the internet one post at a time love tastes best from teal buckets go GIT in your STALL! a Spark does not fall far from the Torchie |
Thomas Cruciamen
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Thomas Cruciamen
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Thomas Cruciamen
User ID: 69256421 United States 10/18/2020 12:08 PM Report Abusive Post Report Copyright Violation | Traveling Route 93 in Arizona, I stopped to climb on some very large boulders that had the same formation. They looked like they had been superheated, became semi-liquid forming bulges with smooth round curves, but developing cracks and striations when cooling. Quoting: Zovalex Massive piles of such rocks in the middle of nowhere, as if they were asteroid debris that had fallen to earth thousands of years ago. . The cracks, provided that the stones are fused, would have been the result of the shockwave ripping through them primarily. The welding, if you will, would have happened in the microseconds immediately following that wave. Seconds later the melt water pulse would have charged into the cavity and started massive subglacial flooding that would have melted still more ice. There are vast boulder fields in the Blue Ridge mountains that I think are likely a result of this same event. Though, it would seem that the shocked cobble is not found that far south. |
Thomas Cruciamen
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Thomas Cruciamen
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Thomas Cruciamen
User ID: 69256421 United States 10/18/2020 12:24 PM Report Abusive Post Report Copyright Violation | Traveling Route 93 in Arizona, I stopped to climb on some very large boulders that had the same formation. They looked like they had been superheated, became semi-liquid forming bulges with smooth round curves, but developing cracks and striations when cooling. Quoting: Zovalex Massive piles of such rocks in the middle of nowhere, as if they were asteroid debris that had fallen to earth thousands of years ago. . The cracks, provided that the stones are fused, would have been the result of the shockwave ripping through them primarily. The welding, if you will, would have happened in the microseconds immediately following that wave. Seconds later the melt water pulse would have charged into the cavity and started massive subglacial flooding that would have melted still more ice. There are vast boulder fields in the Blue Ridge mountains that I think are likely a result of this same event. Though, it would seem that the shocked cobble is not found that far south. Correction, Appalachians. |
Anonymous Coward User ID: 78356929 Canada 10/18/2020 01:33 PM Report Abusive Post Report Copyright Violation | and Alleghenies? OP here on-site, enjoying some sunny mid-teen (celsius) weather and just eyeing out a few that fit the program here...the whole "beach" here could almost be considered littered with every size, type and facet one could bother wanting to look for [link to imgur.com (secure)] [link to imgur.com (secure)] i might just end up bringing one or two of these home with me |