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Of super-volcanoes and mag-stripes and things.
Posted: Sun May 16, 2010 3:58 pm
by kbs2244
We don’t really have a geology type thread, so I will put this here since it occurred off Japan.
http://www.iodp.tamu.edu/scienceops/exp ... _rise.html
As a OBTW,
Check the depths they are drilling at.
As a reference, the much ballyhooed BP/Gulf of Mexico drill site was at apx 5000 feet.
Re: Of super-volcanoes and mag-stripes and things.
Posted: Tue May 18, 2010 10:39 am
by Johnny
11,500' is close to the max depth for a modern drillship. I'm not sure they could operate and produce from that depth safely but they can certainly do some good science.
We *do* need a geology thread! Geo-Archaeology anyone?
Re: Of super-volcanoes and mag-stripes and things.
Posted: Tue May 18, 2010 10:42 am
by Minimalist
Feel free to start one.
Re: Of super-volcanoes and mag-stripes and things.
Posted: Tue May 18, 2010 11:31 am
by Tiompan
Johnny wrote:11,500' is close to the max depth for a modern drillship. I'm not sure they could operate and produce from that depth safely but they can certainly do some good science.
We *do* need a geology thread! Geo-Archaeology anyone?
In the old world at least it's apparent that the geology of the engraved rocks was very important . Engravings incorporate cracks and fissures into the design and often there are naturl marks that resemble cup marks . This can give an impression that the engravers may have considered the the natural markings earlier engravings .
There is also the obviously intentional choice of different qualities and colours of rocks in monuments and the deposition of quartz .
Some reasoning and experiencing the effects of volcanoes may have helped but surely only a very basic understanding if anything would have been the norm in prehistory .
George