[Nhcoll-l] Rocks in a geological trail

[Gali Beiner]

Dear NHCOLL-listers,

I've been asked about how to enhance the preservation chances of rocks
intended for display along an outdoor educational geological trail. The
specimens will represent different geological time periods and the trail
itself will be within a nature reserve in the desert (very hot summers,
cold nights, strong exposure to elements and visitors). I'm told that the
chosen specimens will be fixed within the trail, cemented there, but there
are worries concerning the long term preservation considering the
vagrancies of the weather plus handling (and being stepped upon?) by
visitors.

Under such circumstances, not that much can be done against outright
vandalism, but I was asked if there was some kind of coating that could be
applied to sandstones, limestones and shales to help their preservation.
Most of the materials I work with are intended for indoor use. Would the
outdoor conservators on the list like to make suggestions - yes/no to
coatings, which kind of coating if any?

Thanks,

Gali

-- 
Gali Beiner (ACR)
Conservator, Palaeontology Lab
National Natural History Collections
The Hebrew University of Jerusalem
Berman Building, Edmond J. Safra campus, Givat Ram
Jerusalem 91904, Israel
Fax. 972-2-6585785
*gali.beiner at mail.huji.ac.il <gali.beiner at mail.huji.ac.il>*

*https://nnhc.huji.ac.il/?lang=en <https://nnhc.huji.ac.il/?lang=en>*
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