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Dino impact gave Earth the chill
BBC NEWS ^ | 05/31/04 | N/A

Posted on 06/01/2004 1:02:01 AM PDT by TigerLikesRooster

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One more piece of the puzzle, called "The Extinction of Dinosaurs by Asteriod Impact."
1 posted on 06/01/2004 1:02:02 AM PDT by TigerLikesRooster
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To: TigerLikesRooster
I think it was something else being spewed out that caused the climate to warm.


2 posted on 06/01/2004 1:04:35 AM PDT by gorebegone
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To: gorebegone
Re #2

Never realized that Al Gore is 60 million years old. After 60 million years of constant trying, he finally managed to get into Harvard a few decades ago.:) The oldest student ever to get into that school, but nobody had noticed.

3 posted on 06/01/2004 1:09:53 AM PDT by TigerLikesRooster
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To: TigerLikesRooster; nuconvert
I watched a documentary on the Shoemaker-Levy-9 impact on Jupiter that occured in 1994 (I believe it was 1994), and it was really interesting. They said that the energy expended was equivalent to a Hiroshima-sized detonation, every second, for 13 years. And that the dust could caused by the impacts were greater than the size of the Earth.

Now, if the dust cloud can be that large, then it can be assumed that a huge meteorite hit (not necessarily something as big as the ShoemakerLevy9 comet that impacted Jupiter) could be counted on raising a sizeable dust cloud that would change life as we know it.

In the late 1800s there was a volcano explosion (with time i will recall the name of the mount) that caused parts of Europe and the US to experience a whole year without summer (due to the volcanic ash changing the climate patterns for the year). Imagine what an asteroid/meteorite/(God-forbid)Comet could do!

4 posted on 06/01/2004 1:12:31 AM PDT by spetznaz (Nuclear missiles: The ultimate Phallic symbol.)
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To: spetznaz

The astoroid was sent here by Halliburton, which is secretly run by a small but greedy race of space aliens who later returned to drill the oil the dinosaurs produced.

On a slightly more serious note:

Burning soft coal could stem global warming, I suspect, if things actually did get out of hand. Actually, though, I think third world countries already are burning a lot of soft coal.


5 posted on 06/01/2004 1:24:28 AM PDT by Arthur Wildfire! March (Profile updated Friday)
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To: spetznaz
Re #4

Hi, spetz. That mountain is Krakatoa, which blew up in 1883. Here are some details picked up from Internet.

Krakatau erupted in 1883, in one of the largest eruptions in recent time. Krakatau is an island volcano along the Indonesian arc, between the much larger islands of Sumatra and Java (each of which has many volcanoes also along the arc). There is a very fine book about the Krakatau eruption by Tom Simkin and Richard Fiske, so if you really want to know about the eruption you should go to the nearest bookstore or library to find that. Here are some highlights from their summary of effects:

1. The explosions were heard on Rodriguez Island, 4653 km distant across the Indian Ocean, and over 1/13th of the earth's surface.

2. Ash fell on Singapore 840 km to the N, Cocos (Keeling) Island 1155 km to the SW, and ships as far as 6076 km WNW. Darkness covered the Sunda Straits from 11 a.m. Ont 27th until dawn the next day.

3. Giant waves reached heights of 40 m above sea level, devastating everything in their path and hurling ashore coral blocks weighing as much as 600 tons.

4. At least 36,417 people were killed, most by the giant sea waves, and 165 coastal villages were destroyed.

5. When the eruption ended only 1/3 of Krakatau, formerly 5x9 km, remained above sea level, and new islands of steaming pumice and ash lay to the north where the sea had been 36 m deep.

6. Every recording barograph in the world documented the passage of the airwave, some as many as 7 times as the wave bounced back and forth between the eruption site and its antipodes for 5 days after the explosion.

7. Tide gauges also recorded the sea wave's passage far from Krakatau. The wave "reached Aden in 12 hours, a distance of 3800 nautical miles, usually traversed by a good steamer in 12 days".

8. Blue and green suns were observed as fine ash and aerosol, erupted perhaps 50 km into the stratosphere, circled the equator in 13 days.

9. Three months after the eruption these products had spread to higher latitudes causing such vivid red sunset afterglows that fire engines were called out in New York, Poughkeepsie, and New Haven to quench the apparent conflagration. Unusual sunsets continued for 3 years.

10. Rafts of floating pumice-locally thick enough to support men, trees, and no doubt other biological passengers-crossed the Indian Ocean in 10 months. Others reached Melanesia, and were still afloat two years after the eruption.

11. The volcanic dust veil that created such spectacular atmospheric effects also acted as a solar radiation filter, lowering global temperatures as much as 1.2 degree C in the year after the eruption. Temperatures did not return to normal until 1888.

6 posted on 06/01/2004 1:24:45 AM PDT by TigerLikesRooster
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To: TigerLikesRooster
Thanks for the post TLR. Saved me some head-wracking time trying to remember what volcano caused the temp change (I thought it was Krakatoa, but wanted to make sure).

Oh, and I see you can't sleep either. LOL.

7 posted on 06/01/2004 1:56:18 AM PDT by spetznaz (Nuclear missiles: The ultimate Phallic symbol.)
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To: Arthur Wildfire! March
Yep ....as you know, it has to be GW's fault! LOL.

You know what .....don't be too surprised if the next James Bond movie has a Halliburton clone being the baddie's evil company. I wouldn't be surprised at all.

8 posted on 06/01/2004 1:58:01 AM PDT by spetznaz (Nuclear missiles: The ultimate Phallic symbol.)
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To: TigerLikesRooster
Actually Krakatau was only the 2nd largest volcanic eruption of the 19th century. The "year without summer" usually refers to the results of the 1815 eruption of Tambora, which was the largest volcanic eruption in recorded history.
9 posted on 06/01/2004 5:43:07 AM PDT by JohnBovenmyer (I)
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To: PatrickHenry; VadeRetro; RadioAstronomer; Ichneumon

TUCvER ping.


10 posted on 06/01/2004 5:44:22 AM PDT by Junior (Sodomy non sapiens)
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To: VadeRetro; jennyp; Junior; longshadow; RadioAstronomer; Physicist; LogicWings; Doctor Stochastic; ..
PING. [This list is for the evolution side of evolution threads, and some other science topics like cosmology. FReepmail me to be added or dropped.
Long- time list members get all pings, but can request "evo-only." New additions usually get evo-pings only, but can specify "all pings."]
11 posted on 06/01/2004 6:54:51 AM PDT by PatrickHenry (Hic amor, haec patria est.)
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To: TigerLikesRooster; Junior; VadeRetro; Ichneumon
10. Rafts of floating pumice-locally thick enough to support men, trees, and no doubt other biological passengers-crossed the Indian Ocean in 10 months. Others reached Melanesia, and were still afloat two years after the eruption.

This is interesting as a method of spreading "local" species around. It wouldn't happen often, but apparently it does happen.

12 posted on 06/01/2004 6:59:09 AM PDT by PatrickHenry (Hic amor, haec patria est.)
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To: PatrickHenry

Thanks for the ping!


13 posted on 06/01/2004 6:59:38 AM PDT by Alamo-Girl
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To: PatrickHenry

One problem with the pumice raft. You don't want to catch it at the launch point.


14 posted on 06/01/2004 7:10:00 AM PDT by VadeRetro
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To: PatrickHenry
Re #12

Yeah, that is an interesting way to look at it. I came across no one who mentioned it as a means to spread species.

15 posted on 06/01/2004 7:11:05 AM PDT by TigerLikesRooster
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To: TigerLikesRooster
Never realized that Al Gore is 60 million years old. After 60 million years of constant trying, he finally managed to get into Harvard a few decades ago.:)

Only by ballpark mentality radiometric dating methods, which are notoriously unreliable. The Dropout can only be a few thousand years old at most.

Cordially,

16 posted on 06/01/2004 8:01:12 AM PDT by Diamond
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To: spetznaz

Krakatoa.

But I think early 1800's.


17 posted on 06/01/2004 8:25:40 AM PDT by BartMan1
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To: VadeRetro
One problem with the pumice raft. You don't want to catch it at the launch point.

What really made Neanderthals go extinct:

Ogg: Look, fellows! That volcano is really looking serious. Let's swim away from here. Otherwise, all our people will die.

Gugg: Swimming is a lot of work. Let's wait until we get a pumice raft to float on.

18 posted on 06/01/2004 9:23:43 AM PDT by PatrickHenry (Hic amor, haec patria est.)
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To: VadeRetro

What is pumice?


19 posted on 06/01/2004 10:22:46 AM PDT by RussianConservative (Xristos: the Light of the World)
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To: RussianConservative

Pumice is a frozen-foam lava. Often it is less dense than water.


20 posted on 06/01/2004 10:24:30 AM PDT by VadeRetro
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