[meteorite-list] Dennis Cox paradigm re two 12.9 Ka BP Taurid Complex ice comet fragment stream impact air burst Boslough jet storms 800 km wide -- long detailed review -- Google Earth images: Rich Murray 2012.03.25

[Rich Murray]

Dennis Cox paradigm re two 12.9 Ka BP Taurid Complex ice comet
fragment stream impact air burst Boslough jet storms 800 km wide --
long detailed review -- Google Earth images: Rich Murray 2012.03.25
http://rmforall.blogspot.com/2012/03/dennis-cox-paradigm-re-two-129-ka-bp.html
http://tech.groups.yahoo.com/group/astrodeep/message/99


https://mail.google.com/mail/u/0/?ui=2&ik=cea3602cde&view=lg&msg=1364b5d66e2a8d95

http://wp.me/pKGTX-oI

http://craterhunter.wordpress.com/2012/03/25/a-different-kind-of-climate-catastrophe-2-2/

http://craterhunter.wordpress.com/a-different-kind-of-climate-catastrophe/

Sun, Mar 25, 2012 at 12:37 PM

New post on A Catastrophe of Comets

A Different Kind of Climate Catastrophe
by Dennis Cox

A couple of years ago, as a hobby, and pass-time, I set out to see if
I could work out a better way of identifying potential sites to go
meteorite hunting.  I had learned to do battle damage assessment from
aerial reconnaissance photos a long time ago in the Army. And the
blast damage, and ground effects from an explosive event, are pretty
much the same,  no matter what the source of the explosion might be.
It’s only a question of scale, and explosive force. Visually, there is
very little difference in the appearance of a bomb crater, and an
impact crater of the same size. So a forensic technique of reading the
patterns of movement in the emplacement of blast effected materials on
the ground applies well in the search for potential impact related
geology. The quality of the image data now commonly available to
anyone with a good PC, an internet connection, and a copy of Google
Earth, is excellent.  In the past five years, the publically available
image data has really come into its own. And today’s 21st century
satellite imagery allows us to study the surface of the Earth at a
level of detail our fathers could never have imagined....

[ end of review ]

.....Some time between 20,000, and 30,000 years ago a great comet 50
km to 100 km wide was thrown into the inner solar system. And it
immediately began to break up. That disintegrating comet was the
progenitor of the Taurid Complex. A family of objects in related,
short period, Earth crossing orbits. And 12,900 years ago, just after
the end of the last ice age, two large clusters of fragments from that
monster, both with the fragment size, density, and distribution like
we see in comets Linear, or SW-3. Had a celestial train wreck with
this fair world of ours. The individual fragments of each cluster were
so close, that in the heart of their respective impact zones, only the
first fragments to fall, fell into cold atmosphere. The rest fell into
the already superheated impact plumes of those that had gone before.
And they just cranked up the heat and pressure.

Something like 1.1 billion tons of material fell in those two
clusters. And the event lasted a little over an hour. The progression
of the event was a result of the Earth’s movement along its orbital
path, as it crossed through the orbital path of the giant comet’s
debris stream. Not a product of the Earth’s rotation. So that, if it
was a daytime event, the fragments would’ve been outbound from
perihelion. And as the Earth crossed the debris stream, the airburst
storms would’ve begun in the west, and progressed to the east.  In a
night time event, the debris stream would be inbound towards their
perihelion, and the opposite would be true. You get a better idea of
the progression of the event if you consider how fast the Earth itself
is traveling.

Assuming that the Earth’s orbit is roughly circular, we can work out
its orbital speed with some fairly simple algebra. Since the average
distance from the Earth to the Sun is 149,597,890 km., the Earth
travels a distance of 2*Pi*(149,597,890), or 949,951,264.43 km per
year. But I can’t wrap my brain around that number when you write it
that way. I need it broken down a little more. There are 365 days in a
year, and 24 hours per day. So we get a velocity of 107,300 km/h, or
if you prefer, 67,062 miles per hour. So what? How do we put that into
a scale that makes some sense?

We need to put that number into some kind of subjective context to
make sense of it.

Consider this: Earth's diameter at the Equator is something like
7,926.28 miles, or 12,756.1 km. Which means we’re riding the Earth
through space along her own orbital path at a little more than 8.41
times her own width every hour. So, as the Earth crossed the orbit of
the Taurid progenitor’s still concentrated debris streams, she would
have only been in the path of that stuff for about an hour. And the
two large clusters of fragments would have fell within a few short
minutes of each other.

The eastern end of the Laurentide Ice sheet got hit in an area from
Northern Minnesota, and the Great Lakes to the Arctic Circle. When the
down-blasts of thermal impact plasma hit the Laurentide Ice sheet,
they caused titanic hydrothermal explosions (steam) that lofted huge
icebergs hundreds of miles in all directions. In a matter of minutes,
much of the eastern end of the LIS was obliterated. Much of which
probably went into the atmosphere as steam.

The ice sheet impacts evaporated millions of acre feet of ice directly
into the atmosphere as steam. There was probably much more of the ice
sheet that went up as steam, only to rain down in the days, and weeks,
that followed than was melted to flow into the sea. As North America
burned, the storms around the world raged. There were probably
torrential rains everywhere in the northern hemisphere for weeks
afterward. How long exactly? Who knows? We can only estimate. But for
a good ball park figure to start from, the biblical 40 days, and 40
nights, sounds about right to me.

And the signs of massive flooding that have been attributed by
generations of geologists to the bursting of ice dams holding back
Glacial lake Agassiz are very probably the flood effects of the flash
melting of major portions of the eastern end of the Laurentide ice
sheet. And the outflows from the resulting floods would’ve been to the
north into the Arctic ocean, and the North Atlantic. There would also
have been armadas of icebergs after the event in both areas. And I
expect that the glacial till in those bergs must have been deposited
on the ocean floor below as they melted. So I’d expect to see some
evidence of that armada of icebergs in ocean cores.

Sea levels rose as the blasted, and melted, ice sheet flowed in mega
floods to the sea. And just as today, most of the larger populations
would have been in low lying areas. The seas would’ve risen too fast
or anyone, and anything, living in coastal areas anywhere in the
world, to escape. Every coastline all over the world was effected. And
everywhere it would have been much like a giant tsunami. But this
time, the flood waters rose and never receded.

Much of an ice sheet bigger than the Continental United States was
destroyed. The whole world was shaken to the core. And, like taking
weight from a floating barge, the sudden shift of the weight of so
much ice caused a massive uplift of the middle of the continent.
Coupled with the powerful detonations of so many exploding comet
fragments, it caused earthquakes, and volcanic eruptions all over the
world. And global seismic activity was the worst in many millions of
years.

Out of tens of thousands of large, air-bursting, fragments there is
not one single impact structure the northeast impact zone that bears
any resemblance to what standard impact theory might expect. There are
a few hundred normal craters averaging about 100 meters width, in the
southwest, on the outskirts of the primary impact zone there. And that
have been pretty much ignored by the academic community. But for the
most part, all of the planetary scarring of the event has been
mis-defined as ancient volcanogenic. And most of the ages of those
blast effected materials have been over estimated by orders of
magnitude.

The other much larger cluster of fragments hit in central Mexico, and
the American southwest. And it produced the most devastating
geo-ablative effects of the two.

The Mexican cluster was approximately 500 miles wide. As the first of
the fragments hit, they detonated high in the atmosphere. But the
explosions retained their downward momentum. And they hit the ground
as devastating supersonic down blasts hotter than the surface of the
sun. And as I said, only the very first fell into cold atmosphere. The
rest of the fragments just piled on in, and added to the heat, and
pressure. Mexico didn’t have an ice sheet to protect the surface by
exploding on impact like reactive armor on a battle tank. And there,
the overpressures from the blast waves were so powerful they blasted
whole mountain ranges aside like clumps of flour on a bakers table.

As the comet’s debris continued to pile in, the heat, and
overpressures, continued to build. In seconds all of central Mexico
was pulverized into a surreal, and blasted, landscape of heavily
ablated, and melted terrains, like a Salvador Dali painting. It
generated a post impact storm front, hundreds of miles wide,  and
hundreds of miles from front to back. And it  rushed downrange to the
northwest at supersonic speeds, sterilizing the western half of the
continent on a swath from Mexico to the Arctic, along a storm front
extending from California to the great plains.

The blast wind incinerated everything it passed over. In the hottest
part of the impact zone, vast quantities of stone were vaporized, and
whipped up, into the storm, where the atmosphere worked like a
refining tower. And in a fiery rain, the materials precipitated out of
the impact storm, down wind according to their condensation
temperature, and specific gravity. This was like nothing ever imagined
in our most frightening nightmares of disaster, or catastrophe. During
the impacts, and for a few minutes after, most of North America from
Mexico to the Arctic, and from California, to the plains of the
Midwest, was engulfed in a firestorm like something we should only
expect to find on the surface of the sun. And there is not one square
inch of the surface terrains of western North America in its path that
doesn’t bare the scars of that blast of heat.

In fact, look closely in modern satellite images. You’ll see that all
of the high ridges of the mountain ranges of California, Colorado,
Utah, Wyoming, and Montana that had glaciers at the time bear clear
and obvious signs of the heat. And a profound feature that is easy to
spot in satellite images is melted glacial ridges, blown over to the
north, and northwest, like runnels of melted wax on the side of a
candle. And we typically see high glacial valleys below those
deformed, and melted, glacial ridges that have all of the material
that was once suspended in the glacier lying exactly below where it
was in the glacier. Indicating that the glacial till dropped out so
fast it’s as if the ice just vanished in a quick puff of steam.

While the mega floods from the blasted ice sheet were still flowing
into the sea. Much of the biomass of western North America was burned
away. And much of the resultant smoke, and soot, was blown high above
the atmosphere where it blocked sunlight for years. There was an
immediate sharp drop in temperatures world wide. And it was the worst
kind of ’Perfect Storm’. Made all the worse because at the same time
the destruction of the LIS caused a sudden rise in sea levels world
wide. It it may have caused a shutdown of the thermal haline cycle
which brings tropical warmth to the North Atlantic. Be that as it may,
Northern Europe quickly cooled to arctic temperatures. And the cold
remained for something like 1,300 years.

The Clovis people, and whole species, and ecosystems, were annihilated
in seconds. Much of the western half of the continent was incinerated,
and sterilized. The other half was devastated. The food chain of the
entire northern hemisphere was severely compromised. And except for
rare, and random, patches here, and there, that remained somehow
unscathed like the one surviving undamaged house in a neighborhood hit
by a tornado. The lush savannah that the giant animals of North
America depended on for food was gone down to the last blade of grass.
Those giant animals that survived in the southeast corner of the
continent faced a drastically altered, and reduced food supply. And
they simply starved. The specialist predators that depended on those
animals for food perished as well. The species that survived
extinction were the most adaptable, the smaller ones that didn’t eat
much, and those that were just plain lucky.

If there were any human survivors of that day, anywhere in the western
hemisphere, they were hiding in a deep cave somewhere well south, and
east, of the impact zones. And they were cringing in terror as their
world was erased and made new again. Any who peeked out of the cave
without getting themselves killed, may have told stories of fire
breathing dragons remaking the world with breath so hot it could melt
mountains.

All that might sound like the product of an overactive imagination.
But using modern satellite imagery, a very compelling case can be made
that the scenario described above is very close to the exact truth.

One could make a good case that similar comet impact storms from the
Taurid Complex caused the Bronze Age collapse 5,200 years ago.

The remaining debris of the Taurid Complex is still out there. And
there are still fragments of significant size in Earth crossing
orbits. It is almost a certainty that the next major impact event will
be an airburst. And it is a certainty that we haven’t seen the last
catastrophic impact event of the Taurid Complex.

Something wicked this way comes. It’s been here a few times before.
It’s caused extinctions before. It’s even killed humans in large
numbers before. And it can be implicated in the collapse of many
bronze age civilizations. Next time it comes back, it would be good to
see it coming in time to get people out of the way. And to prepare for
human survival in a drastically altered globate climate. Yet Congress
would rather whiz away 70 million dollars trying to convince us a
trace gas that’s important for life to flourish on this planet should
be thought of as a pollutant. All the while giving funding for impact
research, and the search for Near Earth Objects, little more than lip
service.

Dennis Cox, March 25, 2012 at 11:37 am,
Tags: impact storm, Younger Dryas cooling, Younger Dryas impact
URL: http://wp.me/pKGTX-oI
Trouble clicking? Copy and paste this URL into your browser:
http://craterhunter.wordpress.com/2012/03/25/a-different-kind-of-climate-catastrophe-2-2/
"
[ minor typos corrected by R.M. ]


pertinent features near Campbell Mountain, studied by Dennis Cox, by
his house in Fresno, CA: Rich Murray 2011.06.27
http://rmforall.blogspot.com/2011/06/pertinent-features-near-campbell.html
http://tech.groups.yahoo.com/group/astrodeep/message/87
http://craterhunter.wordpress.com/the-planetary-scaring-of-the-younger-dryas-imp\
act-event/california-melt/

It is easy in a few hours to locate pertinent features to the N, E,
SE, and S of Campbell Mountain, studied by Dennis Cox, a few miles NE
of his house in Fresno, CA.

Maybe some of us can visit for a weekend and drive around, as many
intriguing sites can be found by roads.


"YD impact debris across more than 10% of the planet" -- nanodiamonds
in Lake Cuitzeo, Mexico, James Kennett and 15 coworkers, from 12.9 Ka
impact event -- link to free full text of PNAS report: Rich Murray
2012.03.06
http://rmforall.blogspot.com/2012/03/yd-impact-debris-across-more-than-10-of.html
http://tech.groups.yahoo.com/group/astrodeep/message/95


photo of typical air burst geoablation glaze on hard bedrock at top of
Mount Helix park, E San Diego: Rich Murray 2012.03.15
http://rmforall.blogspot.com/2012/03/redbrown-glaze-on-hard-crystalline.html
http://rmforall.blogspot.com/2012/03/photo-of-typical-air-burst-geoablation.html
http://tech.groups.yahoo.com/group/astrodeep/message/98

Mount Helix public park with white cross and outdoor concrete theater
from about 1925 -- excellent access via helical road with parking lot
and portapotty, about 2.2 km SE of roads 8 and 125, with similar
mounts 1.5 km further SE -- in fact, probably all the mountains for a
very long ways have the same evidence -- so I'm just alerting the
alert to some nice obvious low hanging fruit...

Mount Helix is .419 km el, .250 km above road 125 at .169 km el about
1 km to W, so it is quite prominent, and has spectacular views.

32.766969   -116.983481   .415 km el.

1.5 m rock just to N of 1 m rock, both pink hard crystalline rock
(granite?) with surface glaze a few mm thick that is redbrown and
rough (like the surface of a brick) -- a white ballpoint pen provides
the scale -- entirely typical of uneroded glazes on broken and rounded
tumbled rocks and blocks at altitudes that preclude water erosion,
suggesting the possibility of early Holocene surface melting and
glazing by a very hot high pressure and density gas jet from an air
burst, as simulated at Sandia Labs in recent years by Mark Boslough --
the first of 17 photos I took in my first visit to the site from 3 to
4 pm, Tuesday, March 13, 2012 -- I collected a few pounds of samples,
to donate to anyone who can properly study the melts and glazes.

HTC Incredible 3G phone 7 Mpx cam, 1.491 MB jpg,
3264X1952 px, clear blue sky, 3 pm, 4 hours before sunset.

Google Earth view is 2010.08.23, about 10 AM.

Mt. Helix Park Foundation
4901 Mt. Helix Drive
La Mesa, CA 91941
Tracey Stotz             619-741-4363
TStotz at MtHelixPark.org
binannual newsletter, From the Top
total 2011 income $ 140,522


10 m broken rock hill with black glazes, W of Rancho Alegre Road, S of
Coyote Trail, W of Hwy 14, S of Santa Fe, New Mexico, tour of 50
photos 1 MB size each via DropBox: Rich Murray 2011.07.28 2011.08.03
http://rmforall.blogspot.com/2011/08/10-m-broken-rock-hill-with-black-glazes.html
http://rmforall.blogspot.com/2011/08/35479730-106085926-1865-km-el-top-10-m.html
photos 3-5 of 50
http://tech.groups.yahoo.com/group/astrodeep/message/92


Rich Murray,
MA Boston University Graduate School 1967 psychology,
BS MIT 1964 history and physics,
254-A Donax Avenue, Imperial Beach, CA 91932
rmforall at gmail.com
                                 505-819-7388       cell
                                 619-623-3468       home
Skype audio, video rich.murray11

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