Web said: Hexagonal/polygonal cratering... now that's another question [and another thread]!
I bet baliistic experiments have failed to come up with flat-floored, terrace-sided craters with central peaks containing yet another little mini-crater on the tip tho....
Comment [by whom?]: No impact crater.
EVIDENCE OF TWO NEW POSSIBLE IMPACT STRUCTURES IN CHAD: SEPARATE IMPACTS, BINARY ASTEROIDS OR AOROUNGA IMPACT CHAIN?
Emilio Gonzalez and Sergio Alonso, Astroseti.org, Barcelona, Spain
- The Uri structure presents a 5 km diameter and a multi-ring morphology. The structure is harder to appreciate because it is in a mountainous area, and because it is also more eroded than the northern one. Despite the previous description, there are two continued rings -separated by a depressed zone- and even a third one extending the affected area to 8 km. There is presence of some volcanic buildings developed from linear fractures in the rings, suggesting that the fractures and magma emissions are more recent than the structure formation. The depressions between rings indicate a compressed genesis rather than accumulation of pyroclastic elements and lava coming from fractures.
- Source: http://www.geo.su.se/file.php?id=4928
dahlenaz wrote:To be sure that no possibility has been overlooked in the determination of possible mechanisms
behind formation of planetary features we may want to revisit the mechanism of hydraulic cratering.
These are formed in sediment under shallow water
and represent examples of a progression from oldest to newest.
Video was captured for the second half of these features.
During the next session i will take photos after each crater's formation
which will show the many details that give this mechanism value.
A larger image is named: http://para-az.com/hydraulic-craters/hydro-cratering-805c.jpg
I have proposed that there is great value in looking at this process as it may correlate directly with
plasmoid-formed craters, offering us a simple tool to demonstrate a complex and intensely dynamic
process. This is classroom friendly and it may even be the best explanation for one feature often talked
about but not considered in the context of Hopi lake, which once spread out into north-east Arizona from
where meteor crater resides, within its ancient shores. The possibility of a bolide event over the lake offers
some interesting factors to explain the history of that area and
the mysterious disappearance of the Anasazi.
The subject of hydraulic cratering will be continued at:
http://www.para-az.com/hydraulic-craters/mechanism.html ....... 3dzp ......
Other developments: http://www.para-az.com/ess-npa12
Lloyd wrote:* That last image, a Martian feature, is very similar to Death Valley.
Meteor Crater in Hopi LakeDZ said: plasmoid-formed craters ... may even be the best explanation for one feature often talked about but not considered in the context of Hopi lake, that once spread out into north-east Arizona [... --] meteor crater resides within its ancient shores. The possibility of a bolide event over the lake offers some interesting factors to explain the history of that area and the mysterious disappearance of the Anasazi.
* The idea that Meteor Crater formed within Hopi Lake when it was still a large lake is very interesting. I see that the elevation of Hopi Lake is said to have been about 1,813 m (5,950 ft) and the elevation of Meteor Crater is 1,740 m (5,709 ft) at the rim and about 1,540 m at the bottom. So the "impactor" would have displaced 67 m (240 ft) of lake water above the lake bottom there. I thought that might have caused a tidal wave that would have breached the lake's banks and caused rapid erosion and draining of the lake. But this webpage http://www.creationscience.com/onlinebook/GrandCanyon5.html says Grand Lake just north of Hopi Lake started draining first and that undercut the bank of Hopi Lake, which caused it to drain too. It looks like that idea is plausible, according to this map, so maybe the crater formed after the lake drained. [The Anasazi should not have been affected much by the draining of Hopi Lake, since it must have occurred a few thousand years ago and they were still in the area until about 1300 A.D.]
dahlenaz wrote:You caught onto one thought that crossed my mind, Lloyd, a tidal wave resulting from an impactor's force.
If this were to have occurred the wave could have exceeded the capacity of Grand Lake leading to
a breach in any directions unable to hold the increased level. Additionally, tectonic factors could have
opened any number of drainage paths turning subteranian drainage into raging rivers.
This proposal is more about food for thought and call for details such as relative elevations and locations
I have little reason to trust conventional dates given for some events in history, especially those that
are necessary for duping the american public into looking away from the evidence of recent catastrophic
Were there to have been a wave initiated by an impactor's force upon the SW shore of Hopi Lake, i rather
doubt that shore front property in the North East could escape the event. If the timing were separated from
Anasazi departure, there are still some scenarios to consider with reference to how people would be affected,
by anything consequential to a destabalized region, re-arrangement of surface water and many other aspects.
Evaluation of this region cannot overlook the lakes who's presence is obvious, wide spread and looking more
recent than is claimed. The characteristics of the surrounding rock at the crater is a significant detail of the
pre-event lake. I say, Look at NE arizona though water logged eyes and see the possibilities. A few people in
Holbrook and at the petrified forest, who heard my proposal, saw how the dots might connect with details
known to them.
I hope others will set important pieces into their place on the table.
As much as i agree with some info at the site you mention, especially Hydroplate possibilities, I am concered
about using science to mend doubt where faith must preside. d...z
dahlenaz wrote:So Lloyd, Have you come across any mention of the two lakes, Grand and Hopi, being the
remnants of a much larger body of water?
I ask because some of the details mentioned regarding the unusual stratification, angles and elevations
around the intersection of the three canyons, makes me wonder about crustal rebound as a factor that
introduced elevation change when the larger body drained to the level of the two bodies.
At the link you mention, http://www.creationscience.com/onlinebook/GrandCanyon5.html
there are many details offered and many open-ended question for them.
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