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Home clings to collapsing cliff in N. Texas

Home clings to collapsing cliff in N. Texas | Teachers Toolbox | Scoop.it

"The edge of the 4,000 square foot residence on Overlook Court was dangling about 75 feet above the rocky shoreline of Lake Whitney after part it it had already broken off."


Via Seth Dixon
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Lorraine Chaffer's curator insight, June 13, 2014 10:00 PM

Natural hazards

YEC Geo's curator insight, June 14, 2014 1:10 PM

In the lower map, the location of the house is marked by a yellow pushpin inside the solid red square.  Some geological background--this poor house has the misfortune to apparently lie directly upon the contact between two carbonate formations (marked by the white dotted line), and to also be on the erosive edge of a bend in the river. Both factors probably contributed to the demise of this particular home, which was eventually set on fire: https://tinyurl.com/nw7mfd2

 

 

One thing to notice is how straight the cliff edge is upon which the house is built.  Knowing that, I'd have to say that if I had a house located on the straight cliff edges within the dotted red squares I've made on the map, I'd be worried.

 

You can read about the geology of Texas here:

https://tinyurl.com/lrcp9yj

 

Image credit here: http://www.nbcdfw.com/news/local/House-on-Lake-Whitney-Cliff-Falling-Into-Lake-262718721.html?partner=nbcnews

Massimo Dott. For. Amb. Di Duca's curator insight, June 15, 2014 12:13 PM

E la prospezione geologica da presentare al Comune? Era prevista nel PRG del comune? Esisteva un VIA?

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Largest glacier calving ever filmed

"On May 28, 2008, Adam LeWinter and Director Jeff Orlowski filmed a historic breakup at the Ilulissat Glacier in Western Greenland. The calving event lasted for 75 minutes and the glacier retreated a full mile across a calving face three miles wide. The height of the ice is about 3,000 feet, 300-400 feet above water and the rest below water."

 

Tags: physical, geomorphology, landforms, erosion, climate change, Greenland.


Via Seth Dixon
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More information at www.chasingice.com

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Flaviu Fesnic's comment, April 12, 2014 3:31 PM
impressive !
Maricarmen Husson's curator insight, April 13, 2014 2:15 PM

Adam LeWinter and Director Jeff Orlowski filmed a historic breakup at the Ilulissat Glacier in Western Greenland

Rescooped by Ms. Harrington from Geography Education
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Aerial Photographs Catalogue the Life and Death of Volcanic Islands

Aerial Photographs Catalogue the Life and Death of Volcanic Islands | Teachers Toolbox | Scoop.it

Volcanic islands can seem to appear out of nowhere, emerging from the ocean like breaching monsters of the deep. Below, Mika McKinnon explains how these odd geological formations are born, how they evolve, and how they eventually vanish back beneath the waves.


Via Seth Dixon
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Matthew Richmond's curator insight, December 2, 2015 3:30 PM

Re-scooped from Professor Dixon, pretty cool story on the formation of islands in the south Pacific. A couple of them look like the island visible from the beach in Rincon, Puerto Rico where I stayed. The island is one giant rock so nobody lives there and it's a naval base for the U.S. military. This, however, is a different situation when you realize that not only do people live here, but kind of a lot of people live here.

Matt Ramsdell's curator insight, December 14, 2015 9:00 PM

What causes the death and the caldera in a volcano? One thing that happens in a deceased volcano is the center of the volcano starts to either erode or the inside finally caves in. Once this happen a caldera takes shape and the ocean starts to take over. As the waves eat away at the shores it will eventually create a island that is shaped like a "U". After this happens that island will someday retreat back into the ocean and someday form a barrier reef.

Adam Deneault's curator insight, December 14, 2015 10:52 PM

Based on general knowledge, I know that the taller a volcano is, the younger it is and the shorter it is, the older it is. The reason they start to get short is from erosion. Hot spots in the Earth's crust make small islands from molten rock. Young islands can be very dangerous, because if they are inhabited, they have the possibility of erupting, whereas an old island does not since the volcano is lnactice and eroding. Over time the inactive volcano will crumble and a caldera will take shape and after even more time, that caldera will slip under the ocean and become a reef. 

Rescooped by Ms. Harrington from Geography Education
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Block-Long Sinkhole Swallows Cars in Baltimore

Block-Long Sinkhole Swallows Cars in Baltimore | Teachers Toolbox | Scoop.it

"A block-long sinkhole opened up in a residential neighborhood in rain-soaked Baltimore on Wednesday, devouring cars and forcing the evacuation of several houses."


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Seth Dixon's curator insight, May 1, 2014 4:35 PM

We like to think that the Earth beneath our feet is solid and that the configuration of the landforms in our neighborhood will be unchanging.  This a dramatic reminder that Earth's physical processes don't ever stop--even if we've built a city in that spot.  Watch this retaining wall collapse in this video.


Tags: physical, geomorphology, erosion, landformsweather and climateurban ecology.

Jim Doyle's curator insight, May 9, 2014 10:57 PM
Block-Long Sinkhole Swallows Cars in Baltimore
Rescooped by Ms. Harrington from Geography Education
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Aerial Photographs Catalogue the Life and Death of Volcanic Islands

Aerial Photographs Catalogue the Life and Death of Volcanic Islands | Teachers Toolbox | Scoop.it

Volcanic islands can seem to appear out of nowhere, emerging from the ocean like breaching monsters of the deep. Below, Mika McKinnon explains how these odd geological formations are born, how they evolve, and how they eventually vanish back beneath the waves.


Via Seth Dixon
more...
Matthew Richmond's curator insight, December 2, 2015 3:30 PM

Re-scooped from Professor Dixon, pretty cool story on the formation of islands in the south Pacific. A couple of them look like the island visible from the beach in Rincon, Puerto Rico where I stayed. The island is one giant rock so nobody lives there and it's a naval base for the U.S. military. This, however, is a different situation when you realize that not only do people live here, but kind of a lot of people live here.

Matt Ramsdell's curator insight, December 14, 2015 9:00 PM

What causes the death and the caldera in a volcano? One thing that happens in a deceased volcano is the center of the volcano starts to either erode or the inside finally caves in. Once this happen a caldera takes shape and the ocean starts to take over. As the waves eat away at the shores it will eventually create a island that is shaped like a "U". After this happens that island will someday retreat back into the ocean and someday form a barrier reef.

Adam Deneault's curator insight, December 14, 2015 10:52 PM

Based on general knowledge, I know that the taller a volcano is, the younger it is and the shorter it is, the older it is. The reason they start to get short is from erosion. Hot spots in the Earth's crust make small islands from molten rock. Young islands can be very dangerous, because if they are inhabited, they have the possibility of erupting, whereas an old island does not since the volcano is lnactice and eroding. Over time the inactive volcano will crumble and a caldera will take shape and after even more time, that caldera will slip under the ocean and become a reef. 

Rescooped by Ms. Harrington from Geography Education
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Rivers from Above

Rivers from Above | Teachers Toolbox | Scoop.it
Get a unique view of these rivers beyond the banks.Photo editing by Lia Pepe

Via Seth Dixon
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Woodstock School's curator insight, February 25, 2014 5:01 AM

The Art of Geography

Mark Burgess's curator insight, February 26, 2014 6:26 AM

Awesome rivers. i love a good river.

ok's curator insight, September 23, 2014 5:45 AM

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