[meteorite-list] New or maybe old QUESTION??????

From: Göran Axelsson <axelsson_at_meteoritecentral.com>
Date: Sun, 04 May 2008 13:00:51 +0200
Message-ID: <481D9763.1090605_at_acc.umu.se>

Hey!

I never thought that I had to correct you in the field of meteoritics.

 :-)

Sweden does have a couple of old coal mines but the fossile meteorites
is found in lime stone quarries.

I have also been shown in the roof of a mine (south of Kumla) of a
structure that was claimed to be an impact crater (or impact pit) but I
haven't been able to find anything published about it.
That was before I got hooked on meteorites so I didn't know what to look
for or ask. The age of that quartzite strata should have been in the
range of 400-600 million years.

/G?ran

Michael Farmer wrote:
> Yes, Sweden is well known for it's "fossil meteorites"
> dug up in coal mines.
> You can google them but they are clearly hundreds of
> millions of years old, and you can still see clear
> chondules in pieces.
> Michael Farmer
> --- Pete Shugar <pshugar at clearwire.net> wrote:
>
>
>> List,
>> Maybe this has been asked and answered (sounds like
>> a lawer thing) and maybe
>> not.
>> Since I am relatively new to collecting and
>> certainly not an Expert in any
>> area of meteorite study (with the exception of
>> magnetisum (from the sky
>> magnetic VS made a magnet by processes here on
>> earth).
>> Here's my question:
>> A geologist digs in an area that he thinks there
>> will be the likelyhood of
>> finding a fossil. Maybe he gets lucky and maybe
>> finds bunches of them.
>> Has anyone ever found a meteorite buried deep in a
>> layer that is thousands
>> or even millions of years old?
>> Years ago--long before I became an obsessed, crazed,
>> meteorite addict,
>> while teaching a series on earthquakes, I had found
>> a video of a scientist
>> standing with one foot on the Pacific plate and the
>> other foot on the North
>> Americian plate, ie astraddle of the San Andreas
>> fault line. In back of him
>> was a small vertical clift of maybe 10 feet and you
>> could plainly see the
>> shift (approx 15 inches) in the layers of sediment.
>> Now I've got to thinking (some say this is my
>> problem--Thinking) that these
>> meteorites have a tremendous terestial age. If the
>> earth is bombarded by
>> these meteorites throughout the aeons, then there
>> should be a record, ie
>> evidence in the form of buried craters (see the
>> Odessa,Tx crater) -- Approx
>> 100 to 110 feet deep that has been filled in till
>> it is only 25 to 30 feet
>> deep now due to wind blown sand (mostly). I've got a
>> pamplet of "Occasional
>> Papers of the Strecker Museum" from Baylor
>> University showing a neat cross
>> section of the Odessa Crater.
>> How much investigation into the cross section
>> structure of the sediment
>> layers, looking for evidence of craters has been
>> done? Has there ever been
>> an accidential discovery of a buried crater in a
>> clift side. Lots of these
>> erroded mesa exist out west. Maybe evidence is
>> visable there.
>> Surely Valeria is not the only animal killer out
>> there.
>> Maybe another animal drilled by a passing meteorite
>> with the coresponding
>> meteorite near the body. Maybe there's no body but
>> the meteorite is still
>> there buried in the deeper layers of sediment. Maybe
>> tektites are the only
>> surviving evidence.
>> In a nutshell, has there ever been a meteorite found
>> at a depth of sediment
>> that is plainly very old?
>> Pete
>>
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Received on Sun 04 May 2008 07:00:51 AM PDT