[Rockhounds] Another extinction impact-13 KYA-No Red Herring

[J Bryan Kramer]

Well no, that article suggests soot associated with the diamonds was caused
by fires. Another part of that article doesn't seem to be very credible
where that fellow says there is no known mechanism for breaking up a comet
into widely scattered bits. What happened on Jupiter in 1994 seems to show
otherwise:

"From July 16 through July 22, 1994, pieces of an object designated as Comet
P/Shoemaker-Levy 9 collided with Jupiter. This is the first collision of two
solar system bodies ever to be observed, and the effects of the comet
impacts on Jupiter's atmosphere have been simply spectacular and beyond
expectations. Comet Shoemaker-Levy 9 consisted of at least 21 discernible
fragments with diameters estimated at up to 2 kilometers. "

<http://www2.jpl.nasa.gov/sl9/>

I'm I suspect most of us watched that and those fragments were very widely
scattered over the surface of Jupiter.  Of course Jupiter does have a much
stronger gravity field.

We could only wish that so called science journalists actually knew some
science or could at least use Google to do some checking.

BK

On Sat, Jan 3, 2009 at 10:25, Kreigh Tomaszewski <Kreigh at tomaszewski.net>wrote:

> From burning vegetation. See
> http://news.bbc.co.uk/2/hi/science/nature/7808171.stm
>
>
>
> On Saturday, Jan 3, 2009, at 08:51 America/Detroit, J Bryan Kramer wrote:
>
>  So where did all the carbon come from if this was a hit totally absorbed
>> by
>> the ice sheet. Would a carbonaceous chondrite not break up before impact?
>>
>> BK
>>
>>
>> On Sat, Jan 3, 2009 at 01:33, Mr EMan <mstreman53 at yahoo.com> wrote:
>>
>>  Red Herring?   I have to disagree.  As one who is a part time
>>> researcher--
>>> sampling glacial outwash planes in the northeastern US for glass
>>> microsphere
>>> deposits. I've kept abreast of this topic before it became a topic.
>>>  There
>>> is evidence mounting weekly that a major cometary impact occurred over
>>> north
>>> eastern North America approx. 12,900-13,100ybp. Strata of "black sand
>>> mats"
>>> containing glass microspheres, charcoal, nano-diamonds, and
>>> Buckyballs are bening located all over eastern North America: From
>>> caves in near both Cinncinatti and Sandusky Ohio over to the enigmatic
>>> "Carolina
>>> Bays" features up and down the east coast.  Meteoric iron embedded in
>>> Mammoth Tusks and Bison horns from other times suggest large impacts
>>> occured
>>> several times earlier in the present ice age.
>>>
>>>  Ice dam breaching  ( if that is what it was) apparently  occurred at
>>> several places along the icesheet front simultaneously. While it is true
>>> that massive meltwater runoff is likely to have changed ocean currents,
>>> an
>>> impact can account for causing that sudden melting. The present lack of
>>> identified impact crater is understandable given the true depth of the
>>> existing ice sheet(2miles?) is not known but, could have absorbed most or
>>> all of the impact whithout leaving easily located deposits of insitu
>>> impactites.  There is no primary strata left to analize--as of yet but
>>> many
>>> are working on it finding evidence in situ not just in outwash deposits.
>>> If
>>> we look at the rock called Ice and think of melting as erosion, it puts
>>> erosion on a accelerated timescale never seen before. Which has good and
>>> bad
>>> points for reconstructing the events.
>>>
>>> Hardly a red herring but a mounting body of evidence which ties together
>>> the younger dryas anomomally, regional extinction of large ice age
>>> animals
>>> populations which never returned and, dissapearance of the Human Clovis
>>> culture in mid and northern North America for approximately 800 years.
>>>
>>> Eman
>>>
>>> --- On Fri, 1/2/09, Dora Smith <tiggernut24 at yahoo.com> wrote:
>>> Thanks.  The article is a red herring.   It has been satisfactorily
>>> demonstrated that the abrupt cooling was the result of the massive
>>> outpouring of melted ice into the northern Atlantic when an ice bridge
>>> that
>>> had held it back melted.
>>>
>>>
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>>>
>>
>>
>> --
>>
>> ""It often seems to me that the night is much more alive and richly
>> colored
>> than the day."
>>
>>                      Vincent van Gogh
>> J Bryan Krämer
>> North Florida, USA
>> photos at:
>> http://pbase.com/photoburner
>>
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>
>
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-- 

""It often seems to me that the night is much more alive and richly colored
than the day."

                      Vincent van Gogh
J Bryan Krämer
North Florida, USA
photos at:
http://pbase.com/photoburner


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