Thanks for all the anwers thus far. I'm writing something up on the tay Nappe in the grampian Orogeny in Scotland. Its strike length is at least 200 km (Stonehaven to Butte) and possibly longer into Northern ireland.
What I want to know if the following sentence would be remotely appropriate:
"The Tay Nappe, in terms of strike length, is 1) by far the largest / 2) the largest / 3) amongst the largest fold nappes in the world"
So far, 2) or 3) appear to be correct...
Maarten
-----Original Message-----
From: Tectonics & structural geology discussion list [mailto:[log in to unmask]] On Behalf Of Yvette Kuiper
Sent: 02 March 2009 13:54
To: [log in to unmask]
Subject: Re: The largest fold nappe?
Dear Maarten,
I don't know if these are the biggest (maybe the ones in Norway are
bigger?), but in the Foxe Fold Belt of Melville Peninsula there seem to
be fold nappes >70-80 km. See the references below. They are refolded by
another generation of folds that becomes tight towards the WSW, so it's
hard to tell how far the nappes continue. Towards the ENE there is a lot
of water before the Foxe Fold Belt continues on Baffin Island.
Just out of curiosity, why are you asking that question?
Cheers, Yvette
Henderson, J.R., 1981. Structural analysis of sheath folds with
horizontal X-axes, northeast Canada. Journal of Structural Geology 3,
203-210.
Henderson, J.R., 1983. Structure and metamorphism of the Aphebian
Penrhyn Group and its Archean basement complex in the Lyon Inlet area,
Melville Peninsula, District of Franklin. Geological Survey of Canada,
Bulletin 324, 50 pp.
Krabbendam, Maarten wrote:
> Dear all,
>
>
> I am curious what the largest fold nappes in the world are.
> The dimension I'm especially interested in is the strike length.
>
> Which is the 'longest' fold nappe?
>
> Cheers,
>
>
> Maarten Krabbendam
> British Geological Survey
> Murchison House
> West Mains Road
> Edinburgh EH9 3LA
> Tel: 0131 6500256
> Email: [log in to unmask]
>
>
>
>
>
>
--
Yvette D. Kuiper
Assistant Professor
Department of Geology and Geophysics
Boston College
Devlin Hall 213
140 Commonwealth Avenue
Chestnut Hill, MA
02467 USA
Tel. 617-552-3647
Fax. 617-552-2462
http://www2.bc.edu/~kuipery/
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