Re: Age Of the Rock we call earth

On Sat, 28 Oct 2006 03:00:43 -0400, "George" <george@xxxxxxxxxxxxxxx>
wrote:


"Charles" <ckraft@xxxxxxxxxxxxxxxxx> wrote in message
news:1nv4k21gb6cpsitf5rn1l3rjtnok5mlc01@xxxxxxxxxx
On Fri, 27 Oct 2006 07:06:29 -0400, "George" <george@xxxxxxxxxxxxxxx>
wrote:


"Charles" <ckraft@xxxxxxxxxxxxxxxxx> wrote in message
news:3d63k218edl5s8k9dmeeb9ln06obcettlb@xxxxxxxxxx
On Thu, 26 Oct 2006 22:35:39 -0500, Jo Schaper
<jospamnotschaper34@5socket78dot9net> wrote:

lapidaryrough wrote:
Timberwoof wrote:
In article <1161915503.245062.306740@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
"lapidaryrough" <lapidaryrough@xxxxxxxxxxx> wrote:

Q: The Big bang 14.8 billon Bp. Earths age 5.2 billon Bp.
Q: just how old is this rock we call earth
Myself i feel its closer to about 12.5 14.8 billon Bp.
What makes you feel that? Have you read any of the science that
leads
to
the conclusion of ~4.5BY? Do you have any evidence to support your
feeling that the Earth is three times older than that?

Yes, Silucates last in o2 for no more then 250-300 millon years,
and
the land masss have turned over about 3-time thus far. hydrated
silucates have a very short life span.

Rethink this part of your premise. I've got lots of 1.5 billion year
old
granite and rhyolite, looking very much like the day it cooled, and
some
Gunflint chert (mostly quartz) between 1.9-2.3 billion years old that
is
perfectly suitable for turning into an arrowhead. I've got 375 million
year old chert too, some of which is as bright and shiny as you please,
and some of which is almost all weathered to tripoli by now. The
granite, the rhyolite and the chert all spent some substantial time
underwater, and therefore theoretically hydrated.

How to they date chert? What's the mechanism for telling how old it
is?

thanks
Charles

http://adsabs.harvard.edu/abs/1987GeCoA..51..959W

George



Thanks. I'm going to have to read that more than once to get the
idea.

Well, hello, Chuck. I see that you took me out of your royal plonk bucket.

George


You keep confusing me with someone else. I'm not him, and he's not
me.
.

Relevant Pages

  • Re: Age Of the Rock we call earth
    ... just how old is this rock we call earth ... I've got 375 million year old chert too, some of which is as bright and shiny as you please, and some of which is almost all weathered to tripoli by now. ... The granite, the rhyolite and the chert all spent some substantial time underwater, and therefore theoretically hydrated. ...
    (sci.geo.geology)
  • Re: Age Of the Rock we call earth
    ... just how old is this rock we call earth ... year old chert too, some of which is as bright and shiny as you ... granite, the rhyolite and the chert all spent some substantial time ...
    (sci.geo.geology)
  • Re: Age Of the Rock we call earth
    ... just how old is this rock we call earth ... year old chert too, some of which is as bright and shiny as you please, ... granite, the rhyolite and the chert all spent some substantial time ...
    (sci.geo.geology)
  • Re: Age Of the Rock we call earth
    ... just how old is this rock we call earth ... granite and rhyolite, looking very much like the day it cooled, and some ... Gunflint chert between 1.9-2.3 billion years old that is ...
    (sci.geo.geology)
  • Re: Age Of the Rock we call earth
    ... just how old is this rock we call earth ... granite and rhyolite, looking very much like the day it cooled, and some ... Gunflint chert between 1.9-2.3 billion years old that is ...
    (sci.geo.geology)