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Author | Topic: Large round boulders on hilltops | |||||||||||||||||||||||||||||||||||||
Christian Member (Idle past 6276 days) Posts: 157 Joined: |
In the area where we live there are lots of hills. Most of them are covered with huge, round boulders. Every time I see them I think they had to be tumbled about in a massive amount of water. This seems to me like evidence for a HUGE flood. I, however, don't know a whole lot about geology, so I was wondering if anyone had any other explanation.
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AdminAsgara Administrator (Idle past 2323 days) Posts: 2073 From: The Universe Joined: |
Thread moved here from the Proposed New Topics forum.
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RAZD Member (Idle past 1425 days) Posts: 20714 From: the other end of the sidewalk Joined: |
Glaciers. Ice ages. The hills are moraines
404: This page could not be foundMoraine - Wikipedia by our ability to understand RebelAAmerican.Zen[Deist
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Coragyps Member (Idle past 755 days) Posts: 5553 From: Snyder, Texas, USA Joined: |
Or, if you live west/north of Lawton, Oklahoma, those house-sized rounded boulders that make up the Wichitas are the remains of cores of Everest-class mountains that occupied that spot 540,000,000 years ago. They've eroded a bit since, first by cracking, and then by water smoothing the edges of the cracks until we arrived at today's look. The Granite Wash is a subsurface formation that stretches at least to Amarillo and Pampa, Texas from some ancient quicker episode in that erosion. Lots of gas and oil are down there now.
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jar Member (Idle past 414 days) Posts: 34026 From: Texas!! Joined: |
In areas like Southern California there are boulders that are mixed into the soil. As the land is pushed up by techtonic activity the soil erodes away leaving the boulders sitting on tops of the hills.
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coffee_addict Member (Idle past 497 days) Posts: 3645 From: Indianapolis, IN Joined: |
Have you ever threw a stone into water and try to make it float?
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roxrkool Member (Idle past 1009 days) Posts: 1497 From: Nevada Joined: |
double post
This message has been edited by roxrkool, 10-16-2005 11:23 PM
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roxrkool Member (Idle past 1009 days) Posts: 1497 From: Nevada Joined: |
How big are the boulders? And could you give an idea of where you live? That would help a lot.
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Nighttrain Member (Idle past 4014 days) Posts: 1512 From: brisbane,australia Joined: |
Hi, Christian, sounds like you might be talking about granite boulders, which tend to exfoliate or peel into a rough sphere. They thin down to the size of cannon-balls or thereabouts before they break up. Do they have a salt-n-pepper appearance? Lots of small crystals in the rubble around them? Try Google Images for a few pix.
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cavediver Member (Idle past 3664 days) Posts: 4129 From: UK Joined: |
Hi Jacen, see my avatar? Those limestone pebbles on the floor are quite small, but just behind are some really big ones: double fists to head sized. The photo was taken in mild conditions. When the current gets up and shoots through that small gap the diver is squeezing, those larger stones dance and juggle in the water like you wouldn't believe! Awesome sight
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Nighttrain Member (Idle past 4014 days) Posts: 1512 From: brisbane,australia Joined: |
Not as good as when you are gold dredging and you pull the last bit of overburden off and see a gleaming nugget looking at ya.
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Yaro Member (Idle past 6516 days) Posts: 1797 Joined: |
Well, in the grand canyon, you will often see boulders perched on very thin columns of sedimentary rock. That's basically because everything else around the column was eroded away over the milenia.
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Christian Member (Idle past 6276 days) Posts: 157 Joined: |
How did those boulders get into the soil?
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Christian Member (Idle past 6276 days) Posts: 157 Joined: |
They've eroded a bit since, first by cracking, and then by water smoothing the edges of the cracks until we arrived at today's look.
Where did the water come from that smoothed the cracks?
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Christian Member (Idle past 6276 days) Posts: 157 Joined: |
I thought about it last night after I posted that question, that everyone would then be wondering where I live. I think, if you don't mind, I'd like to keep myself as anonymous as possible. Pick any area with large boulders on mountains and we can discuss that. It doesn't have to be my area.
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