[meteorite-list] Question about terrestrial age of 4.4 kyr

From: Sterling K. Webb <sterling_k_webb_at_meteoritecentral.com>
Date: Mon, 22 Mar 2010 23:27:56 -0500
Message-ID: <9DBA533408B84CF6AA9F655F78CD26EB_at_ATARIENGINE2>

Hi, Shawn,

The abbreviation "kyr" stands for "kiloyear" or
units of 1,000 years. 4.4 kyr = 4,4000 years.
Slightly different, "mya" means "million years
ago." The term "aeon" or "eon" is often used
to mean a stretch of one billion years.

All these terms are unofficial and used for
convenience, not like the metric terms, like
meter, decimeter, centimeter, millimeter, etc.,
that are "official."


Sterling K. Webb
----------------------------------------------------------------------
----- Original Message -----
From: "Shawn Alan" <photophlow at yahoo.com>
To: <meteorite-list at meteoritecentral.com>
Sent: Monday, March 22, 2010 11:07 PM
Subject: [meteorite-list] Question about terrestrial age of 4.4 kyr


Hello Listers,

Today has been a busy day about the topic of money and meteorites. I
have more of a science question and hope someone could answer my
question. I was reading an article tonight about NWA 869 and it said
that the samples yielded a terrestrial age of 4.4 kyr. What does the kyr
stand for and is this another way of saying years? The article goes on
to say that the terrestrial age is consistent with the low degree of
weathering (W1). I am guessing 4.4 kyr means 4.4 years from the low
level of weather, but again, the desert climate is a perfect environment
for preserving meteorites.

Shawn Alan
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Received on Tue 23 Mar 2010 12:27:56 AM PDT