[meteorite-list] Rite or wrong, is it a crater?

From: Göran Axelsson <axelsson_at_meteoritecentral.com>
Date: Sat Aug 21 13:02:32 2004
Message-ID: <41278114.6040201_at_acc.umu.se>

Sorry, no auger hole. We digged it out partly, thinking we could find a
meteorite but we reached
the hard packed road in just a couple of centimeters (I've added a
picture of that too)
As far as I know, no geological surveys have been done in the area for
at least 10 years
and I'm an amateur geologist living here so I would probably hear about
it if there were one.

Prospecting for minerals is done in the morain, not in the road since
you don't know where
that material is from. Usually they take 20 liters of morain for gold
level analyses and that is
the only thing people are looking for in the area.
The top layer of the road concists of a large amount of crushed stones
and isn't from the
local material. I've tried to find any fractured rocks and I have a few
suspected ones. If I
could pair up two pieces it would mean it was broken in the hole. The
only other marks
I've found is from my shovel when I digged it.

Thanks for the feedback, it is good for me to discuss theese things .

/G?ran

David Freeman wrote:

> Dear Goran, list;
> I have studied these very good pictures in detail, and offer a thought.
>
> After spending a year on a seismic field crew loading seismic holes,
> this one looks sort of like a 2" diameter hole that a seismic charge
> would be loaded into. A portable back pack drill operated by two
> people can bore a hole about 10 feet deep with this type of device.
> Note sorting of the gravel as it was augured out of the hole and the
> fines came back into the hole. Gravel's as those in the picture would
> be relatively hardly compacted and would need some rather creative
> mechanics to sort them out in this way, such as an auger.
> Has any seismic exploration, or exploration for aggregates like those
> prospecting for a gravel pit occurred in the area in the past year?
> Another source of this type of activity may be from someone
> prospecting other minerals. This really looks like a test hole,
> seismic hole or some form of auguring resulting in a bore hole to me.
> With the tight compaction of those materials seen, try a tablespoon
> and dig down a foot or two and see if you do not find a 2" diameter
> bore hole as the annulus would be present and observed at some sub
> surface point I would think.
> Just my 2 cents...
> Dave F. (former driller for water wells, environmental wells, coal
> mine driller, and seismic shooting crew leader, oh and meteorite hunter)
>
> G?ran Axelsson wrote:
>
>> As I have hinted and promised, here are pictures of the
>> best clue of the meteor that exploded over Sweden last
>> month.
>>
>> The website is far from complete, actually only one page
>> is done yet, but I wanted some feedback on the crater.
>> My motivation is going like a rollercoaster.
>>
>> We found a crater but so far we haven't been able to
>> find the meteorite itself. That is a pretty strong
>> argument against this being a meteorite crater, but we
>> haven't searched all of the area around or somebody
>> else could have found it already.
>>
>> http://www.meteorite.neab.net/eliastorp/crater.htm
>>
>> Any ideas, questions or thoughts are appreciated.
>>
>> We have also talked with a witness, a 12:ish year old boy
>> that spend the night of the event in a tent directly below
>> the second explosion. He heard two explosions, it went
>> "bang - sssss - bang - sssss" and his first thought
>> was that a car had blown a tire or two because of the
>> hissing sound after and between the bangs.
>> Sorry, I didn't ask how long time it took but he wasn't
>> at sleep when he heard the sound.
>> Is this a good sign for finding meteorites in the area?
>>
>> /G?ran
>>
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>
>
Received on Sat 21 Aug 2004 01:06:28 PM PDT