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Author Topic:   Geologic Column
Adminnemooseus
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Posts: 3959
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Message 17 of 55 (195636)
03-31-2005 2:52 AM
Reply to: Message 8 by roxrkool
03-29-2005 4:42 PM


Need a new "Igneous and Metamorphic Rocks" topic
Something that has not been mentioned are intrusions. Intrusions are very much a part of geologic columns worldwide.

Indeed, I don't think that igneous intrusives and metamorphic rock have ever much been covered at . BUT, I think such areas of geology are rather remote to the real theme of this topic. They are seemingly doomed to be lost in "yet another geological column topic".

Perhaps roxrkool could propose a new "Igneous and Metamorphic Rocks" topic, before such discussion goes to far in this topic. If so, please link back to a good spot in this topic.

The non-admin mode is too feeble to himself pull off starting the topic.

Adminnemooseus


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This message is a reply to:
 Message 8 by roxrkool, posted 03-29-2005 4:42 PM roxrkool has replied

Replies to this message:
 Message 18 by roxrkool, posted 03-31-2005 3:23 PM Adminnemooseus has taken no action
 Message 19 by roxrkool, posted 03-31-2005 3:28 PM Adminnemooseus has replied

  
Adminnemooseus
Administrator
Posts: 3959
Joined: 09-26-2002


Message 20 of 55 (195831)
03-31-2005 5:19 PM
Reply to: Message 19 by roxrkool
03-31-2005 3:28 PM


Re: Need a new "Igneous and Metamorphic Rocks" topic
I think that "Geologic Column" topics have rightly been intended to be focused on the themes of sedimentation and stratigraphy. I find no problem with including volcanism (eg. Siberian Traps and other) in this.

Certainly, all of the Earth's geology ties together. Igneous and metamorphic rocks can be part of the discussion.

But I think that the more specific other aspects of the Earth's composition and structure are deserving of having their own more specific topics. This would include such things as stress/strain analysis of folding and faulting, and such things as igneous and metamorphic petrology.

Why a pegamite is very coarse grained, and why an obsidian is glass does not belong in a sedimentation and stratigraphy topic. Why you get the various grades of contact and regional metamophism do not belong in a sedimentation and stratigraphy topic. They are wothy of their own topics.

Adminnemooseus


This message is a reply to:
 Message 19 by roxrkool, posted 03-31-2005 3:28 PM roxrkool has replied

Replies to this message:
 Message 23 by roxrkool, posted 03-31-2005 6:55 PM Adminnemooseus has seen this message

  
Adminnemooseus
Administrator
Posts: 3959
Joined: 09-26-2002


Message 44 of 55 (831820)
04-24-2018 9:17 PM


BUMP
Maybe a good place to do some reading and carry on discussion of things "geologic column"?

Adminnemooseus


Or something like that©.

Replies to this message:
 Message 46 by edge, posted 05-10-2018 9:46 PM Adminnemooseus has replied

  
Adminnemooseus
Administrator
Posts: 3959
Joined: 09-26-2002


Message 49 of 55 (832806)
05-10-2018 11:57 PM
Reply to: Message 46 by edge
05-10-2018 9:46 PM


Flagged "off-topic"
Not that it wasn't off-topic at the "Fossils" topic, but I'm going to try to squelch it here.

But I think a somewhat more expanded version of your message (with graphics) might make for a good new topic. Please propose away.

Adminnemooseus


Or something like that©.

This message is a reply to:
 Message 46 by edge, posted 05-10-2018 9:46 PM edge has taken no action

  
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