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| 05:39 PM | ||
| Users Online Now: 2,242 (Who's On?) | Visitors Today: 1,504,543 | |
| Pageviews Today: 2,178,903 | Threads Today: 598 | Posts Today: 11,965 |
| 05:39 PM | ||
Sinkhole 101 - Mysteries revealed | |
| ~Andariel~
Offer Upgrade  User ID: 35286220  Canada03/04/2013 02:52 PM Report Abusive Post Report Copyright Violation | Hello everyone. I wrote this little article for GLP to read, hoping to dispel any misconceptions. Here is how they are formed. The process to make a sinkhole is actually pretty simple, you need a particular set of geological factors in order for them to form. Time is also a factor, usually sinkholes take a long time to occur and this is due to the slow process of limestone and or carbonate rock "melting" or dissolved by non other than water. The main ingredient is off course water, usually in the form of rain. A porous terrain such as top soil and below that, loose gravel and sand. The water finds its way through the top soil then sand and gravel and eventually it will infiltrate the limestone substrata. Over time as more and more water travels through these channels they will get wider to finally lead to large sub terrain caves to form. Here comes the "fun" part. Once the water level lowers to a certain point, due to either natural causes or man made (pump water out) it will off course leave an empty space, this process causes the roof of the cavern to finally cave in thus forming the dreaded sinkholes. Off course there are much faster ways for them to form and its always due to heavy rain and flooding but this process of erosion is more evident and obvious. Here is a graphical process that shows how its done.    There are much bigger sinkholes in the "wild" that have formed over millions of years. Here is a pic of one of a set that formed in Venezuela.  Here is the results of such natural events within human habitats.   Sinkholes can also form under the seabed and this is the result. In this case, water rushes in to fill the hole and you get an incredibly blue contrast color due to the difference in depths.  Andariel. Last Edited by ~Andariel~ on 03/04/2013 04:49 PM Space, the final frontier...or is it? Knowledge is power |
| Anonymous Coward User ID: 1503871 Canada03/04/2013 03:02 PM Report Abusive Post Report Copyright Violation | |
| ~Andariel~
(OP) User ID: 35286220 Canada03/04/2013 03:17 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 34249989  United States03/04/2013 03:36 PM Report Abusive Post Report Copyright Violation | Is it me or is that 5th pic down a perfect circle? That looks like a view right into the fucking hollow earth to me, that's an amazing picture. Naturally formed perfectly circular hole like that in the middle of a city that deep.. crazy. Hollow earth books often talk about the many rivers that run under major cities underground, maybe that's where the dirt goes. |
snark
Forum Administrator User ID: 27313445 United States03/04/2013 03:37 PM  Report Abusive Post Report Copyright Violation | Nice presentation! Thanks! T For Texas, T For Tennessee! The virtue of courage is a prerequisite for the practice of all other virtues, because otherwise one is virtuous only when virtue has no cost. There are times when something needs to be done, and yet we know that if we step up and do this needful thing, we will pay a heavy personal price. -C.S. Lewis |
| Monkeyofstick
User ID: 35564904 Canada03/04/2013 03:38 PM Report Abusive Post Report Copyright Violation | Great description. What about the one in Louisiana that was created by man?   |
| ~Andariel~
(OP) User ID: 35286220 Canada03/04/2013 03:42 PM Report Abusive Post Report Copyright Violation | Yes, lots of sinkholes are caused by man. But the end results are always the same, cavitation due to the creation of unsupported caves because of drainage of fluids, usually water. Space, the final frontier...or is it? Knowledge is power |
| Anonymous Coward User ID: 22213196 Canada03/04/2013 04:07 PM Report Abusive Post Report Copyright Violation | |
| BRIEF
User ID: 381742 United States03/04/2013 04:16 PM  Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 1151099 United States03/04/2013 04:18 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 26795689 United States03/04/2013 04:18 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 34088292 United States03/04/2013 04:40 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 1151099 United States03/04/2013 04:50 PM Report Abusive Post Report Copyright Violation | |
| ~Andariel~
(OP) User ID: 32004531 Canada03/04/2013 04:50 PM Report Abusive Post Report Copyright Violation | |
| BS Smeller
User ID: 7127676 United States03/04/2013 04:52 PM Report Abusive Post Report Copyright Violation | Why haven't any sinkholes developed in proximaty to oil fields? Pumping out vast quantities of oil surly leaves huge voids. Just asking. Maybe they have but I haven't heard of them. BKK ----------------------- "A God of the Gaps is assigned responsibility for what we do not yet understand." Carl Sagan |
| ~Andariel~
(OP) User ID: 32004531 Canada03/04/2013 04:53 PM Report Abusive Post Report Copyright Violation | |
| BRIEF
User ID: 381742 United States03/04/2013 04:53 PM Report Abusive Post Report Copyright Violation | Why haven't any sinkholes developed in proximaty to oil fields? Pumping out vast quantities of oil surly leaves huge voids. Quoting: BS Smeller Just asking. Maybe they have but I haven't heard of them. They aren't shallow, oil wells are usually pretty deep... I never forgive and I never forget I am a licensed firearm holder. I will, under protection of law, use lethal force if attacked.  |
| ~Andariel~
(OP) User ID: 32004531 Canada03/04/2013 04:58 PM Report Abusive Post Report Copyright Violation | Why haven't any sinkholes developed in proximaty to oil fields? Pumping out vast quantities of oil surly leaves huge voids. Quoting: BS Smeller Just asking. Maybe they have but I haven't heard of them. Good question and the answer is because oil wells are much deeper than water levels. Also the type of rock stratas involved are different. Last Edited by ~Andariel~ on 03/04/2013 04:58 PM Space, the final frontier...or is it? Knowledge is power |
| BS Smeller
User ID: 7127676 United States03/04/2013 04:58 PM Report Abusive Post Report Copyright Violation | Why haven't any sinkholes developed in proximaty to oil fields? Pumping out vast quantities of oil surly leaves huge voids. Quoting: BS Smeller Just asking. Maybe they have but I haven't heard of them. They aren't shallow, oil wells are usually pretty deep... Makes sense. Thanks. BKK ----------------------- "A God of the Gaps is assigned responsibility for what we do not yet understand." Carl Sagan |
| BS Smeller
User ID: 7127676 United States03/04/2013 04:59 PM Report Abusive Post Report Copyright Violation | Why haven't any sinkholes developed in proximaty to oil fields? Pumping out vast quantities of oil surly leaves huge voids. Quoting: BS Smeller Just asking. Maybe they have but I haven't heard of them. Good question and the answer is because oil wells are much deeper than water levels. Also the type of rock stratas involved are different. Thanks  BKK ----------------------- "A God of the Gaps is assigned responsibility for what we do not yet understand." Carl Sagan |
| Gladio
User ID: 22439147 United States03/04/2013 05:04 PM Report Abusive Post Report Copyright Violation | |
| BRIEF
User ID: 381742 United States03/04/2013 05:05 PM Report Abusive Post Report Copyright Violation | Why, in the case of the FL sinkhole, did the concrete slab fail? Even if there was a hole underneath, the conc. floor would have remained intact, wouldn't it? Quoting: Gladio It probably did for a long time, and this guy was probably a heavy fella...by which I mean a fat ass. I never forgive and I never forget I am a licensed firearm holder. I will, under protection of law, use lethal force if attacked. |
| Gladio
User ID: 22439147 United States03/04/2013 05:06 PM Report Abusive Post Report Copyright Violation | Why, in the case of the FL sinkhole, did the concrete slab fail? Even if there was a hole underneath, the conc. floor would have remained intact, wouldn't it? Quoting: Gladio It probably did for a long time, and this guy was probably a heavy fella...by which I mean a fat ass. Haha that's good. But actually, it would take more than a fat ass to make cured concrete collapse. |
| Dr. Charles Norris
User ID: 10715666 United States03/04/2013 05:10 PM Report Abusive Post Report Copyright Violation | |
| ~Andariel~
(OP) User ID: 32004531 Canada03/04/2013 05:10 PM Report Abusive Post Report Copyright Violation | Why, in the case of the FL sinkhole, did the concrete slab fail? Even if there was a hole underneath, the conc. floor would have remained intact, wouldn't it? Quoting: Gladio It probably did for a long time, and this guy was probably a heavy fella...by which I mean a fat ass. Lol Briefy, he does have a valid point. Only thing I can think of is that the concrete was not too thick and also due to the acidity of water which would cause even concrete to dissolve faster. Space, the final frontier...or is it? Knowledge is power |
| FamilyFirst
User ID: 18335718 United States03/04/2013 05:12 PM Report Abusive Post Report Copyright Violation | |
| BRIEF
User ID: 381742 United States03/04/2013 05:12 PM Report Abusive Post Report Copyright Violation | Why, in the case of the FL sinkhole, did the concrete slab fail? Even if there was a hole underneath, the conc. floor would have remained intact, wouldn't it? Quoting: Gladio It probably did for a long time, and this guy was probably a heavy fella...by which I mean a fat ass. Haha that's good. But actually, it would take more than a fat ass to make cured concrete collapse. Concrete really isn't that strong when not reinforced with rebar or wire mesh, and over a big hole and not properly supported it will crumble like glass. I never forgive and I never forget I am a licensed firearm holder. I will, under protection of law, use lethal force if attacked. |
| BRIEF
User ID: 381742 United States03/04/2013 05:14 PM Report Abusive Post Report Copyright Violation | Why, in the case of the FL sinkhole, did the concrete slab fail? Even if there was a hole underneath, the conc. floor would have remained intact, wouldn't it? Quoting: Gladio It probably did for a long time, and this guy was probably a heavy fella...by which I mean a fat ass. Lol Briefy, he does have a valid point. Only thing I can think of is that the concrete was not too thick and also due to the acidity of water which would cause even concrete to dissolve faster. The house wasn't much, the construction was crap and the slab they poured is obviously thin, from the pics I saw and wasn't reinforced with anything. I never forgive and I never forget I am a licensed firearm holder. I will, under protection of law, use lethal force if attacked. |
| Morpheus
User ID: 34510483 Canada03/04/2013 05:14 PM Report Abusive Post Report Copyright Violation | |
| INK3
User ID: 35067643 United States03/04/2013 05:16 PM Report Abusive Post Report Copyright Violation | Yes, yes, I knew all that from my years of spelunking and mapping caves, now show me your tits Quoting: BRIEF LOL!!! Brief always brings a discussion to the right level :) "When tyrants tremble in their fear, and hear their death knell ringing, When friends rejoice both far and near, how can I keep from singing" page7 |
| Anonymous Coward User ID: 32336793 United States03/04/2013 06:01 PM Report Abusive Post Report Copyright Violation | |
