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Author Topic:   Large round boulders on hilltops
Christian
Member (Idle past 6255 days)
Posts: 157
Joined: 10-16-2005


Message 1 of 57 (252268)
10-16-2005 8:19 PM


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.

Replies to this message:
 Message 3 by RAZD, posted 10-16-2005 8:28 PM Christian has not replied
 Message 4 by Coragyps, posted 10-16-2005 10:10 PM Christian has replied
 Message 5 by jar, posted 10-16-2005 10:20 PM Christian has replied
 Message 6 by coffee_addict, posted 10-16-2005 11:11 PM Christian has replied
 Message 7 by roxrkool, posted 10-16-2005 11:19 PM Christian has not replied
 Message 8 by roxrkool, posted 10-16-2005 11:21 PM Christian has replied
 Message 9 by Nighttrain, posted 10-17-2005 4:44 AM Christian has not replied

  
AdminAsgara
Administrator (Idle past 2302 days)
Posts: 2073
From: The Universe
Joined: 10-11-2003


Message 2 of 57 (252269)
10-16-2005 8:22 PM


Thread moved here from the Proposed New Topics forum.

  
RAZD
Member (Idle past 1404 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 3 of 57 (252270)
10-16-2005 8:28 PM
Reply to: Message 1 by Christian
10-16-2005 8:19 PM


Glaciers. Ice ages. The hills are moraines
404: This page could not be found
Moraine - Wikipedia

we are limited in our ability to understand
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This message is a reply to:
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Coragyps
Member (Idle past 734 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 4 of 57 (252290)
10-16-2005 10:10 PM
Reply to: Message 1 by Christian
10-16-2005 8:19 PM


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.

This message is a reply to:
 Message 1 by Christian, posted 10-16-2005 8:19 PM Christian has replied

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jar
Member (Idle past 393 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004


Message 5 of 57 (252292)
10-16-2005 10:20 PM
Reply to: Message 1 by Christian
10-16-2005 8:19 PM


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.

Aslan is not a Tame Lion

This message is a reply to:
 Message 1 by Christian, posted 10-16-2005 8:19 PM Christian has replied

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 Message 13 by Christian, posted 10-17-2005 11:43 AM jar has replied

  
coffee_addict
Member (Idle past 476 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004


Message 6 of 57 (252296)
10-16-2005 11:11 PM
Reply to: Message 1 by Christian
10-16-2005 8:19 PM


Have you ever threw a stone into water and try to make it float?

This message is a reply to:
 Message 1 by Christian, posted 10-16-2005 8:19 PM Christian has replied

Replies to this message:
 Message 10 by cavediver, posted 10-17-2005 5:03 AM coffee_addict has replied
 Message 18 by Christian, posted 10-17-2005 4:26 PM coffee_addict has replied

  
roxrkool
Member (Idle past 988 days)
Posts: 1497
From: Nevada
Joined: 03-23-2003


Message 7 of 57 (252297)
10-16-2005 11:19 PM
Reply to: Message 1 by Christian
10-16-2005 8:19 PM


double post
This message has been edited by roxrkool, 10-16-2005 11:23 PM

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 Message 1 by Christian, posted 10-16-2005 8:19 PM Christian has not replied

  
roxrkool
Member (Idle past 988 days)
Posts: 1497
From: Nevada
Joined: 03-23-2003


Message 8 of 57 (252298)
10-16-2005 11:21 PM
Reply to: Message 1 by Christian
10-16-2005 8:19 PM


How big are the boulders? And could you give an idea of where you live? That would help a lot.

This message is a reply to:
 Message 1 by Christian, posted 10-16-2005 8:19 PM Christian has replied

Replies to this message:
 Message 15 by Christian, posted 10-17-2005 11:49 AM roxrkool has replied

  
Nighttrain
Member (Idle past 3993 days)
Posts: 1512
From: brisbane,australia
Joined: 06-08-2004


Message 9 of 57 (252327)
10-17-2005 4:44 AM
Reply to: Message 1 by Christian
10-16-2005 8:19 PM


Boulders
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 3643 days)
Posts: 4129
From: UK
Joined: 06-16-2005


Message 10 of 57 (252329)
10-17-2005 5:03 AM
Reply to: Message 6 by coffee_addict
10-16-2005 11:11 PM


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 3993 days)
Posts: 1512
From: brisbane,australia
Joined: 06-08-2004


Message 11 of 57 (252353)
10-17-2005 8:49 AM
Reply to: Message 10 by cavediver
10-17-2005 5:03 AM


Underwater
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 6495 days)
Posts: 1797
Joined: 07-12-2003


Message 12 of 57 (252357)
10-17-2005 9:15 AM


Grand Canyon
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.

  
Christian
Member (Idle past 6255 days)
Posts: 157
Joined: 10-16-2005


Message 13 of 57 (252380)
10-17-2005 11:43 AM
Reply to: Message 5 by jar
10-16-2005 10:20 PM


How did those boulders get into the soil?

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 Message 5 by jar, posted 10-16-2005 10:20 PM jar has replied

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 Message 16 by jar, posted 10-17-2005 11:55 AM Christian has replied

  
Christian
Member (Idle past 6255 days)
Posts: 157
Joined: 10-16-2005


Message 14 of 57 (252381)
10-17-2005 11:45 AM
Reply to: Message 4 by Coragyps
10-16-2005 10:10 PM


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?

This message is a reply to:
 Message 4 by Coragyps, posted 10-16-2005 10:10 PM Coragyps has not replied

Replies to this message:
 Message 31 by DBlevins, posted 10-17-2005 10:53 PM Christian has replied

  
Christian
Member (Idle past 6255 days)
Posts: 157
Joined: 10-16-2005


Message 15 of 57 (252382)
10-17-2005 11:49 AM
Reply to: Message 8 by roxrkool
10-16-2005 11:21 PM


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.

This message is a reply to:
 Message 8 by roxrkool, posted 10-16-2005 11:21 PM roxrkool has replied

Replies to this message:
 Message 23 by roxrkool, posted 10-17-2005 6:57 PM Christian has not replied

  
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