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EvC Forum ⇒ Science Forums ⇒ Dates and Dating ⇒

Dating by Stratigraphic Position

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Author Topic:   Dating by Stratigraphic Position
jar
Member (Idle past 424 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 1 of 38 (112127)
06-01-2004 4:34 PM

One of the oldest methods of dating things is based on where they are found in relation to other objects. In this thread I would for us to discuss the merits and limitations in positional dating.
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It is hoped that those who have a position, either in support of, or attempting to refute, positional dating will participate. It is intended as a step by step analysis of positional dating where each step is fully discussed and a concensus is achieved about each step before going forward.
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The first issue relates to a basic assumption. Does everyone agree that if an object is found in a relative undisturbed site, that the object must be younger that what lies on top of it?
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{Per message 5, jar has corrected the previous paragraph to "The first issue relates to a basic assumption. Does everyone agree that if an object is found in a relative undisturbed site, that the object must be older than what lies on top of it?" - Adminnemooseus}
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This message has been edited by Adminnemooseus, 06-01-2004 04:10 PM
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Aslan is not a Tame Lion
Replies to this message:
 Message 3 by NosyNed, posted 06-01-2004 5:02 PM jar has replied
 Message 4 by Chiroptera, posted 06-01-2004 5:04 PM jar has not replied
 Message 6 by 1.61803, posted 06-01-2004 6:21 PM jar has replied
 Message 11 by Loudmouth, posted 06-01-2004 8:45 PM jar has not replied
  
jar
Member (Idle past 424 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 5 of 38 (112147)
06-01-2004 5:06 PM 		Reply to: Message 3 by NosyNed
06-01-2004 5:02 PM

Re: Ooooops
Ooooops is right. Mea Culpa. Thank you Ned. I can only atribute that to old age and gross stupidity.
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May I revise that to say "The first issue relates to a basic assumption. Does everyone agree that if an object is found in a relative undisturbed site, that the object must be older than what lies on top of it?"
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Thank you sir.
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Aslan is not a Tame Lion
This message is a reply to:
 Message 3 by NosyNed, posted 06-01-2004 5:02 PM NosyNed has not replied
  
jar
Member (Idle past 424 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 7 of 38 (112187)
06-01-2004 7:12 PM 		Reply to: Message 6 by 1.61803
06-01-2004 6:21 PM

Re: pulling up a chair.Well, I think you are getting a little ahead of the game
(surprise?) since so far we are confining this to a realtively undisturbed site.
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Aslan is not a Tame Lion
This message is a reply to:
 Message 6 by 1.61803, posted 06-01-2004 6:21 PM 1.61803 has replied
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jar
Member (Idle past 424 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 13 of 38 (112251)
06-01-2004 9:32 PM

What about the condition of the land that surrounds the object. Does a delta or slough appear the same as the original limestone bed? Is it descrete or homogenous? Does a Delta have characteristics that we can definitely tie to specific events or cycles?
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Aslan is not a Tame Lion
  
jar
Member (Idle past 424 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 18 of 38 (112439)
06-02-2004 3:41 PM 		Reply to: Message 17 by Loudmouth
06-02-2004 2:23 PM

Re: Everything new is made of things older
We're not quite at fossils yet even though they seem to be creeping in, we are still trying to make sense of the geology part. So if it's okay with you, can you hold that thought until later and then I think it would be a great issue.
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Aslan is not a Tame Lion
This message is a reply to:
 Message 17 by Loudmouth, posted 06-02-2004 2:23 PM Loudmouth has not replied
Replies to this message:
 Message 19 by NosyNed, posted 06-02-2004 3:57 PM jar has replied
  
jar
Member (Idle past 424 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 20 of 38 (112454)
06-02-2004 3:59 PM 		Reply to: Message 19 by NosyNed
06-02-2004 3:57 PM

Re: Layers
Could you tell from consistency, what it is made of, whether it is regular and distinct from the layers above and below?
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Aslan is not a Tame Lion
This message is a reply to:
 Message 19 by NosyNed, posted 06-02-2004 3:57 PM NosyNed has not replied
  
jar
Member (Idle past 424 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 25 of 38 (112513)
06-02-2004 10:10 PM

How big an area are these layers? Do they cross major divisions like an ocean?
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Aslan is not a Tame Lion
Replies to this message:
 Message 27 by edge, posted 06-02-2004 10:13 PM jar has not replied
 Message 29 by Chiroptera, posted 06-02-2004 11:02 PM jar has not replied
  
jar
Member (Idle past 424 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 30 of 38 (112523)
06-02-2004 11:04 PM

Does anyone else have the feeling we are all just talking to ourselves once again?
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Aslan is not a Tame Lion
  
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