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Author Topic:   Sedimentary Rock Formation
Minnemooseus
Member
Posts: 3945
From: Duluth, Minnesota, U.S. (West end of Lake Superior)
Joined: 11-11-2001
Member Rating: 10.0


Message 61 of 67 (263395)
11-26-2005 6:33 PM
Reply to: Message 58 by GeoJim
11-26-2005 5:31 PM


Off-topic - I'm a bad Moose
As you have probably guessed, I am currently studying geology
I think there's a good chance that I've forgotten more about geology, than you know about geology. And boy, I do wish I could have remembered it.
Moose
Added by administrative edit: Moose has just been slapped, for his off-topic outburst - Adminnemooseus

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Nighttrain
Member (Idle past 4019 days)
Posts: 1512
From: brisbane,australia
Joined: 06-08-2004


Message 62 of 67 (263399)
11-26-2005 6:41 PM
Reply to: Message 60 by GeoJim
11-26-2005 6:20 PM


Re: A few subtleties...
Hi, GJ, and welcome to the fray. As you probably know, we get extremely large gold nuggets on the surface in Oz (2000 ozs +). Since the Yecs insist that the Flood sorted deposits in a brief period, they would have no defence if heavy masses turn up on the surface. EXCEPT, they say rapid erosion probably removed extensive flood sediments over the intervening years. Have we any air-tight measurements of erosion rates, both with sedimentary and igneous/metamorphic rocks? I realise different climatic conditions will accelerate erosion, but do we have any general tables?

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edge
Member (Idle past 1731 days)
Posts: 4696
From: Colorado, USA
Joined: 01-09-2002


Message 63 of 67 (263450)
11-27-2005 12:47 AM
Reply to: Message 60 by GeoJim
11-26-2005 6:20 PM


Re: A few subtleties...
Any geologist, especially sedimentologists know that volcaniclastics and indeed pyroclastics are a form of sedimentary rock (once diagenesis has taken place).
Volcanologists might disagree. Welcome to the vagaries of geological terminology.
Granted they are produced by igneous processes initially (from the volcano), but the way they are deposited is akin to sedimentary deposition.
The problem is that this is a gray area between purely sedimentary and volcanic environments. Somehow, I fail to visualize fiamme as sedimentary structures.
A big clue to this is the inclusion of "clast" in the name. Clasts are only found in sedimentary rocks (and deposits), I would be worried if a geologist referred to crystals formed in igneous or metamorphic rocks as clasts!
Sort of like in 'cataclastic rocks'? There is a lot of confusion in the literature here. A clast is a broken rock fragment, regardless of origin and yet a clastic rock is universally recognized as being equivalent to a sedimentary rock. Geologists seem to work around this okay, but just never have gotten around to agreeing on how to resolve it. This disagreement remains despite the fact that YECs claim geologists can are party a world-wide conspiracy to hide radiometric dates, etc.
Likewise if sediment particals (the actual "grains"- not the cement or recrystalised variety) were referred to as crsytals.
How about 'crystal tuffs'? Sorry, GJ, I'm just taking a little advantage of you here. I am glad that you are studying geology and understand as much as you do. Believe me, new worlds await you.

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Replies to this message:
 Message 64 by Minnemooseus, posted 11-27-2005 12:57 AM edge has replied

  
Minnemooseus
Member
Posts: 3945
From: Duluth, Minnesota, U.S. (West end of Lake Superior)
Joined: 11-11-2001
Member Rating: 10.0


Message 64 of 67 (263451)
11-27-2005 12:57 AM
Reply to: Message 63 by edge
11-27-2005 12:47 AM


Re: A few subtleties...
Just wait until someone drills a hole in the wrong place, and GJ has to go find the hole puller.
Moose

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 Message 63 by edge, posted 11-27-2005 12:47 AM edge has replied

Replies to this message:
 Message 65 by Nighttrain, posted 11-27-2005 1:13 AM Minnemooseus has not replied
 Message 66 by edge, posted 11-29-2005 11:35 AM Minnemooseus has not replied

  
Nighttrain
Member (Idle past 4019 days)
Posts: 1512
From: brisbane,australia
Joined: 06-08-2004


Message 65 of 67 (263452)
11-27-2005 1:13 AM
Reply to: Message 64 by Minnemooseus
11-27-2005 12:57 AM


Re: A few subtleties...
Or fill the hole in because they can hear the tormented in Hell.

This message is a reply to:
 Message 64 by Minnemooseus, posted 11-27-2005 12:57 AM Minnemooseus has not replied

  
edge
Member (Idle past 1731 days)
Posts: 4696
From: Colorado, USA
Joined: 01-09-2002


Message 66 of 67 (264098)
11-29-2005 11:35 AM
Reply to: Message 64 by Minnemooseus
11-27-2005 12:57 AM


Re: A few subtleties...
We've been having a little fun here at GJ's expense. I hope that he understands that we all went through this early in our careers. We all paid our dues. Keep up the studies, GJ.

This message is a reply to:
 Message 64 by Minnemooseus, posted 11-27-2005 12:57 AM Minnemooseus has not replied

Replies to this message:
 Message 67 by roxrkool, posted 11-29-2005 3:10 PM edge has not replied

  
roxrkool
Member (Idle past 1014 days)
Posts: 1497
From: Nevada
Joined: 03-23-2003


Message 67 of 67 (264162)
11-29-2005 3:10 PM
Reply to: Message 66 by edge
11-29-2005 11:35 AM


Re: A few subtleties...
My bit of wisdom to pass on... never lick the core.

This message is a reply to:
 Message 66 by edge, posted 11-29-2005 11:35 AM edge has not replied

  
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