Register | Sign In


Understanding through Discussion


EvC Forum active members: 63 (9162 total)
1 online now:
Newest Member: popoi
Post Volume: Total: 916,387 Year: 3,644/9,624 Month: 515/974 Week: 128/276 Day: 2/23 Hour: 0/0


EvC Forum ⇒ Science Forums ⇒ Dates and Dating ⇒

Questions about Xenoliths and dating

Thread ▼ Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   Questions about Xenoliths and dating
Human Shield
Inactive Member

Normal Thread Display
Message 1 of 13 (264263)
11-29-2005 6:30 PM

Is lava flows the only way to 'zero' a date? I heard that testing that produces older ages then expected is the resault of xenoliths (older rocks in the material). Are these xenoliths easily identified, or are they assumed?
​
Does lavaflow always reset the clock? If the conditions were different, would cooled lava flows contain different ratios?
Replies to this message:
 Message 3 by JonF, posted 11-29-2005 8:27 PM Human Shield has replied
 Message 12 by Dr Jack, posted 10-18-2008 5:34 AM Human Shield has not replied
  
Human Shield
Inactive Member

Normal Thread Display
Message 4 of 13 (264619)
11-30-2005 11:30 PM 		Reply to: Message 3 by JonF
11-29-2005 8:27 PM

Would the heating have to be done while exposed to the surface? And would the properties of the atmosphere matter?
​
Do they notice xenoliths before testing the sample?
This message is a reply to:
 Message 3 by JonF, posted 11-29-2005 8:27 PM JonF has replied
Replies to this message:
 Message 5 by JonF, posted 12-01-2005 11:40 AM Human Shield has not replied
 Message 6 by Coragyps, posted 12-01-2005 2:05 PM Human Shield has not replied
  
Date format: mm-dd-yyyy
Timezone: ET (US)
  
Newer Topic | Older Topic
Jump to:


Copyright 2001-2023 by EvC Forum, All Rights Reserved

™ Version 4.2
Innovative software from Qwixotic © 2024