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Crater Hunters Find New Clues to Ancient Impact Storm
livescience.com ^
| October 31, 2014 01:55pm ET
| Becky Oskin, Senior Writer |
Posted on 11/03/2014 2:32:45 PM PST by BenLurkin
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1
posted on
11/03/2014 2:32:45 PM PST
by
BenLurkin
To: BenLurkin
Weathering quickly (in geological terms, over hundreds of thousands of years) erases evidence of all but the largest of impact craters.
2
posted on
11/03/2014 2:38:40 PM PST
by
JimRed
(Excise the cancer before it kills us; feed & water the Tree of Liberty! TERM LIMITS NOW & FOREVER!)
To: BenLurkin
I have long been suspicious of the curiously-circular edges of Lakes Michigan-Huron, with the Michigan peninsula showing up as the rebounding central mountain range typical of craters.
3
posted on
11/03/2014 2:39:42 PM PST
by
Robert A Cook PE
(I can only donate monthly, but socialists' ABBCNNBCBS continue to lie every day!)
To: BenLurkin
Yet, only a dozen or so impact craters have been found from the ancient bombardment 470 million years ago
Evidence destroyed by Climate Change/s
4
posted on
11/03/2014 2:41:09 PM PST
by
eyeamok
To: Robert A. Cook, PE
5
posted on
11/03/2014 2:57:10 PM PST
by
frithguild
(The warmth and goodness of Gaia is a nuclear reactor in the Earth's core that burns Thorium)
To: BenLurkin; Miss Marple
Geology ping
It is in the tagline
6
posted on
11/03/2014 3:14:47 PM PST
by
CPT Clay
(Follow me on Twitter @Clay N TX)
To: Robert A. Cook, PE
“I have long been suspicious of the curiously-circular edges of Lakes Michigan-Huron,..”
Educational program on TV about salt mining under the great lakes. The salt mine deposit is circular under the area you describe. It is immense. No mention of the cause for that in the program.
To: BenLurkin
Erosion, global warming and of course Bush’s fault caused the craters to disappear.
8
posted on
11/03/2014 3:33:52 PM PST
by
Don Corleone
("Oil the gun..eat the cannoli. Take it to the Mattress.")
To: Diana in Wisconsin
To: BenLurkin
The Earths atmosphere and natural erosion tends to remove craters where the Moons lack of an atmosphere preserves them.
10
posted on
11/03/2014 5:43:22 PM PST
by
jmacusa
(Liberalism defined: When mom and dad go away for the weekend and the kids are in charge.)
To: frithguild; cogitator; SunkenCiv
Good find. Interesting, well-developed hypothesis!
(Particularly since I’m working INSIDE the Saginaw Crater right now at Bay City, Saginaw, and Midland. But there are extensive oil fields right here, and across lake Huron in Canada. Would not a meteor impact that recent have destroyed those fields?)
11
posted on
11/03/2014 5:47:44 PM PST
by
Robert A Cook PE
(I can only donate monthly, but socialists' ABBCNNBCBS continue to lie every day!)
To: Robert A. Cook, PE
The hypothesis is that the impact was highly oblique, sat five degrees. Think about what the bow of s boat does throwing material off to either side. Thus the Carolina Bay geology
12
posted on
11/03/2014 6:02:33 PM PST
by
frithguild
(The warmth and goodness of Gaia is a nuclear reactor in the Earth's core that burns Thorium)
To: Pete from Shawnee Mission
This can’t be possible, as the Earth is only about 4,000 years old. *SMIRK*
This stuff is amazingly interesting! Thanks for the PING, Pete! :)
13
posted on
11/03/2014 6:19:01 PM PST
by
Diana in Wisconsin
(I don't have 'Hobbies.' I'm developing a robust Post-Apocalyptic skill set...)
To: jmacusa
Not to mention plate tectonics.
14
posted on
11/03/2014 6:43:36 PM PST
by
uglybiker
(nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-BATMAN!)
To: frithguild
THIS is hugh:
15
posted on
11/03/2014 6:49:26 PM PST
by
Paladin2
To: uglybiker
“Not to mention plate tectonics’’. Yup. But as to impact craters I remember reading somewhere that a good part of what is now southern Florida particularly in the Everglades is the remains of a large impact crater. Who knows, maybe the chunk of rock that hit the Yucatan sixty-five million years ago might have had something traveling with it or debris thrown upward hit southern Florida.... fascinating stuff.
16
posted on
11/03/2014 6:54:40 PM PST
by
jmacusa
(Liberalism defined: When mom and dad go away for the weekend and the kids are in charge.)
To: Don Corleone
Of course! Bush’s fault! Thank you Don Corleone for reminding us of that. It’s been a little too long that ol’ G.W hasn’t been being properly held to account.
17
posted on
11/03/2014 6:56:59 PM PST
by
jmacusa
(Liberalism defined: When mom and dad go away for the weekend and the kids are in charge.)
To: Diana in Wisconsin
Smarty pants, everyone knows the Earth is 5,000 years old. :-)
18
posted on
11/03/2014 6:58:11 PM PST
by
jmacusa
(Liberalism defined: When mom and dad go away for the weekend and the kids are in charge.)
To: jmacusa
True, but the craters mentioned in the article are supposedly 470myo. A lot has happened since then. Oceans have advanced and receded. Mountain ranges rised and weathered away. Most of western N. America didn’t even exist yet.
19
posted on
11/03/2014 7:07:42 PM PST
by
uglybiker
(nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-nuh-BATMAN!)
To: uglybiker
Indeed. Like I say, fascinating stuff. Astronomy is a hobby of mine.
20
posted on
11/03/2014 7:58:01 PM PST
by
jmacusa
(Liberalism defined: When mom and dad go away for the weekend and the kids are in charge.)
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