Who lived in North America originally?, page 1
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reply posted on 5-8-2004 @ 08:35 AM by Nygdan
Originally posted by The Vagabond
My grandfather [the roughneck] has brought fossils up from as deep as 20,000 feet he tells me.

Thats a rough and tumble job. OUt on a rig, some times on a continental shelf, sometimes in deep ocean for weeks upon weeks at a time. Very hazardous too.
I can't even begin to imagine how the hell that works.

It is mind bogling at times, isn't it.
The first question he has always challenged me with, and I can not answer, is "Oil is a fossil fuel- it comes from living stuff. What the hell is it doing thousands of feet underground while most of the dinosaur bones are so shallow?"

The oil that is drilled for is not a from dinosuar remains, despite the sinclair oil co.'s mascot. Shell oil is closer, but even that isn't totally accurate. To be breif, the oil and the rocks that its contained in (this isn't completely accurate, the oil moves and gets trapped in different places) are composed of a multitude of extremely small organisms. Foraminifera, Nanofossils, Diatoms and other organisms that live throughout the ocean at different depths in very very large populations die, fall to the ocean floor in an effectively continuous rain/snow of organic materials and mineral remains. The organic portion becomes oil, the mineral portions can lithify and become rock. This is a process that has been going on for an extremely long time, thus the layers are extremely thick and hence having to drill very deep sometimes to get oil. Google around for those organisms and also for 'Biostratigraphy'.
He also tells me that there are MASSIVE voids at very deep levels.

I don't know anything about these voids. I would think that a pocket of something that can affect the pressure needn't be a cavern underground or something, but like i said i don't know. I only mention it so as to not give the impression that I am ignoring or avoiding it.
Things like that are what keep me curious about things that may be, even though they don't have a place in textbooks yet.

Well, they're in biostraigraphy, paleontology, and geology text books. But seriously, why should this sort of thing be in, say, a highschool text book? Its not like its secret knowledge or something, its just too specific in a way for students learn it.

Here is an image of the sort of biostraigraphic data that the paleo people get. Those rocks that get pumped up go tho these guys, and this is one of the data sets that they get from it.

The column labeled 'stratiagraphic correlations' is, well, strat. correlations. They use all sorts of information from those drillings and then create these correlations. From this they can tell where in the formation they are.

This can be so detailed as to allow 'biosteering'. The paleo people can look at the data and make recommendations as to where to steer the surprising flexible (such that it can -actually- drill down, curve, and make a complete loop and pop up somewhere else, or even curve and drill horizontally along a rock bed) drill to maximize efficiency.
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