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The Nitrogen The Vikings Left Behind
New Scientist ^
| 9-11-2006
Posted on 09/11/2006 2:55:50 PM PDT by blam
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1
posted on
09/11/2006 2:55:51 PM PDT
by
blam
To: SunkenCiv
2
posted on
09/11/2006 2:56:19 PM PDT
by
blam
To: blam
The grass is always greener over the septic tank.
To: blam
4
posted on
09/11/2006 3:24:36 PM PDT
by
Cacique
(quos Deus vult perdere, prius dementat ( Islamia Delenda Est ))
To: Cacique
Still doesn't explain why N-15 is more abundant than N-13 or N-14 in human habitats. Its not like there is radioactive decay happening. Nitrogen is nitrogen, regardless of the isotope.
5
posted on
09/11/2006 3:28:21 PM PDT
by
Frohickey
To: Frohickey
the difference in isotope is what got Landis in trouble.
6
posted on
09/11/2006 3:45:47 PM PDT
by
donmeaker
(If the sky don't say "Surrender Dorothy!" then my ex wife is out of town.)
To: blam
Why do ancient civilizations always seem to end up underground? Do they sink? Or, does dirt rise up and consume them? I asked this question once before and was told that the wind blows soil across the surface of the earth and everything eventually gets buried. But .... I'm not buying that one. Any theories out there?
7
posted on
09/11/2006 4:14:16 PM PDT
by
layman
(Card Carrying Infidel)
To: layman
Tons of dust fall on every acre over the eons. That's what a geologist pal told me, anyway.
To: layman
"Why do ancient civilizations always seem to end up underground? Do they sink? Or, does dirt rise up and consume them? I asked this question once before and was told that the wind blows soil across the surface of the earth and everything eventually gets buried. But .... I'm not buying that one. Any theories out there?" Parts of Ukraine have some of the deepest topsoil in the world, 150 feet. It blew there from Russia.
When I lived in Florida, I frequently had to wash the thick orange (iron laden) dust from the Sahara desert off my car.
9
posted on
09/11/2006 4:35:19 PM PDT
by
blam
To: layman
Why do ancient civilizations always seem to end up underground? Do they sink? Or, does dirt rise up and consume them?
They get behind on their yard work.
10
posted on
09/11/2006 5:18:35 PM PDT
by
Erasmus
(It takes branes to make an alternate universe!)
To: layman
It might be the wind in the desert, but one fellow,at least credits the earthworms. They chew their way through the soil and put their droppings(?) on top.
To: blam; FairOpinion; StayAt HomeMother; Ernest_at_the_Beach; 24Karet; 3AngelaD; ...
12
posted on
09/13/2006 10:49:56 AM PDT
by
SunkenCiv
(updated my FR profile on Saturday, September 2, 2006. https://secure.freerepublic.com/donate/)
To: Western Phil
"It might be the wind in the desert, but one fellow,at least credits the earthworms. They chew their way through the soil and put their droppings(?) on top." In the South, the Fire Ant has replaced the earth worm as the #1 'turner of the soil.'
13
posted on
09/13/2006 10:57:22 AM PDT
by
blam
To: blam
Wonder if there is enough distinction that a satellite could use color enhancement to spot them?
14
posted on
09/13/2006 10:59:43 AM PDT
by
Lee'sGhost
(Crom!)
To: Lee'sGhost
"Wonder if there is enough distinction that a satellite could use color enhancement to spot them?" Maybe. I've read that something along that line is used in a small plane to detect people in this rural area who have leaking septic systems. We're near the bay and a nice fresh water river.
15
posted on
09/13/2006 11:03:41 AM PDT
by
blam
To: layman
When I was in Israel, I was told by a tour guide that when a new group of people moved into an area, they would just cover with dirt the ruins of whoever had been there before.
16
posted on
09/13/2006 11:13:34 AM PDT
by
ChocChipCookie
(Homeschool like your kids' lives depend on it.)
To: ChocChipCookie
For a good description of this, I recommend the Covenant by James Mitchner. It details the different people who lived on the same site for thousands of years and is being excavated by Israeli/Arab archaeologists as the plot progresses.
Typical for Mitchner, it starts at the beginning.
17
posted on
09/13/2006 12:46:56 PM PDT
by
bert
(K.E. N.P. Slay Pinch)
To: blam
In the South, the Fire Ant has replaced the earth worm as the #1 'turner of the soil.' Is there any benefit to Fire Ant castings?
18
posted on
09/13/2006 2:12:02 PM PDT
by
Sawdring
To: layman
Why do ancient civilizations always seem to end up underground? Do they sink? I would blame the wind less, and trees more. Most of these ancient sites are in depositional areas. Every year they are coated with a layer of fallen leaves and other debris from plants around them. This layer of detritus eventually breaks down into soil. Some sites are subject to frequent flooding, that deposits a layer of mud over the entire site, burying it, unless it is removed, and most of the ancient civilizations had a habit of knocking down the exposed parts of structures and building right over the older structures.
19
posted on
09/13/2006 2:15:30 PM PDT
by
Fraxinus
To: Eric in the Ozarks
Well in the 21 years I've lived in my house, my lawn has raised at least 2 inches. Some areas have gotten so high above the sidewalk that we've had to scrape off the weeds, remove dirt and re-seed (hoping for grass this time instead of weeds!) Every 5 years or so, we have to add another landscape timber on top as the others have gotten too low. Imagine a few thousand years of the same.
20
posted on
09/13/2006 4:00:14 PM PDT
by
ODC-GIRL
(Proudly serving our Nation's Homeland Defense)
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