Re: paleonet Calcispheres

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Some hair bleaching formulas contain peroxides at varying strengths, and I have heard of sedimentologists finding them useful for their samples.   Perhaps experimentation with them would find a concentration that disaggregates shales with less damage to the fossils.

    Dr. David Campbell
    Old Seashells
    University of Alabama
    Biodiversity & Systematics
    Dept. Biological Sciences
    Box 870345
    Tuscaloosa, AL  35487 USA
    bivalve@mail.davidson.alumlink.com

That is Uncle Joe, taken in the masonic regalia of a Grand Exalted Periwinkle of the Mystic Order of Whelks-P.G. Wodehouse, Romance at Droitgate Spa

---------- Original Message ----------------------------------
From: "Fabian Duque-Botero" <fduqu002@fiu.edu>
Reply-To: paleonet@nhm.ac.uk
Date:  Wed, 15 May 2002 16:47:15 -0400

>Hello PaleoNet community, I am doing my Ph.D. dissertation on
>Cenomanian/Turonian sediments, and it seems from the preliminary thin
>sections that I have calcispheres on my rocks. I am hunger for knowledge
>on this subject but the papers I have about this group are restricted
>and scarce. Hope someone on PaleoNet can give me a hand with literature
>on it.
>
>
>
>I also need some help with my samples (shale and marls), I been trying
>several techniques to disaggregate them, but they are too indurated. So
>far, the only procedure that had given me results is the hydrogen
>peroxide, but my forams and other microfossils are being corroded. I
>tried also several soaps and I even with kerosene, but nothing seem to
>affect them.
>
>
>
>I will appreciate your help with any of these two topics.
>
>
>
>Yours truly,
>
>Fabián Duque-Botero
>Graduate Student, Ph.D Program,
>Florida International University
>Earth Sciences Department
>University Park Campus, PC 344
>Miami, Fl. 33199
>
> <mailto:fduqu002@fiu.edu> fduqu002@fiu.edu
>http://www.fiu.edu/~fduqu002
>
>
>Tel: (305) 348-3147
>Fax: (305) 348-3877
>
>
>
>
>