Hi Almeida,
Check the following and reference therein:
Ramsay, J.G. 1980. Nature, 284, 135-135
Cosgrove, J.W. 2001. AAPG Bulletin, 85(4), 737-748;
Hilgers, C. and Urai, J.L. 2004, JSG, 27, 481-494.
Hilgers, C., Dilg-Gruschinski, K. and Urai, J.L.2004. Geology, 32(3), 261-264.
All the best
Mandefro
-----Original Message-----
From: Tectonics & structural geology discussion list [mailto:[log in to unmask]] On Behalf Of C Hilgers
Sent: 10 November 2009 09:35
To: [log in to unmask]
Subject: Re: Help - fibrous in gypsum
Dear Camila
Means & Li published some nice experiments on fibres oriented oblique and normal to the wall in Journal of Structural Geology, Volume 23, Issues 6-7, 7 June 2001, Pages 857-863
Chris
-----Original Message-----
From: Tectonics & structural geology discussion list [mailto:[log in to unmask]] On Behalf Of calmeida
Sent: Montag, 9. November 2009 22:12
To: [log in to unmask]
Subject: Help - fibrous in gypsum
Dear All,
I am studing some geological aspects of the Araripe Basin in Northeast
Brazil in my MSc dissertation.
During the field mapping I noticed the presence of swarm of gypsum veins
placed on carbonatic rocks. In most of them I observed gypsum fibers
perpendicular to the veins walls, but in several places there are some with
fibers parallel to the wall rocks. I am looking for papers and references
that could help me to understand these situations, especcially the case of
parallel fiber veins, that seems to me, to be not very usual.
I appreciate if someone could help me.
Thanks in advance.
--
Camila De Almeida
Belém - Pará - Brasil
Caixa Postal 8608 - CEP 66075-110
Centro de Geociências - Depto. de Geologia
Fone 0055 (91)32017393
Grupo de Geologia Estrutural - GES
Universidade Federal do Pará
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