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Re: The Western Interior Seaway (and computers)
In article <00a901c57cab$f8a3e6b0$a83cb23e@IPC>, David Marjanovic wrote:
> Contrary to my expectations, however, there are Permian and/or Triassic (I
> forgot) marine sediments from eastern Greenland.
>
The Zechstein (Permian) basin and the later (Jurassic) Kimmeridgian
basin in the North Sea were known to be connected to a boreal province of
"bugs" (loose sense) decades ago. The necessary work was done for petroleum
basin understanding.
Pertinent to the WIS, I've seen discussion of the provinciality in the
Kimmeridgian North Sea region bugs in relation to models of oxygenation of
the Kimmeridge Sea and the stirring consequent from currents. It was
considered an important point for explaining/ understanding variations in the
total organic carbon content of the Kimmeridgian, which is the main source
rock in this play. What I can't remember is if this was "in the literature"
or in oil company confidential documentation. I think the context was
geosteering using palaeoenvironmental palynology. About 5 years ago.
Anyway, the presence of Triassic marine beds in East Greenland should
come as no surprise in this context, and my memory tells me that it's old
news.
--
Aidan Karley,
Aberdeen, Scotland,
Location: 57°10' N, 02°09' W (sub-tropical Aberdeen), 0.021233
Written at Wed, 29 Jun 2005 16:12 +0100
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