Re: Kensington Runestone - Nielsen and Wolters.

Daryl Krupa wrote:

 If anthropogenic acids have been responsible for at least some of
the weathering of the Maine tombstones, and have been responsible for
their appearance of great age, then perhaps those acids are also
responsible for the appearance of great age of some of the surfaces
of the KRS.


How about this:

" Antiquarian intervention
   Ever since it was discovered at an early stage that
   weathering presented a threat to rune stones,
   measures have been taken to protect these
   monuments. However, despite the best of
   intentions, some of this heritage protection activity
   has been counterproductive and destructive. Much
   of what was previously done to protect the rock
   carvings and stone sculpture has subsequently
   increased the damage.

   Even when a stone's vulnerability for weathering
   has been observed, the material has not been
   understood as sensitive to intensive cleaning.
   Records in the National Topographical Archives
   (ATA), Stockholm, and interviews with professor
   emeritus Birgit Arrhenius and professor Gustaf
   Trotzig, both formerly of the Technical Section of
   the Swedish National Heritage Board, indicate that
   rune stones have been exposed to unresearched
   methods whose effect is unknown owing to lack of
   documentation.

   Until the 1960s conservation methods were
   considered almost to be trade secrets. During the
   1950s and 1960s rune stones were cleaned with a
   steel brush and caustic soda, which has reduced
   the preservation span of these stones considerably
   (Birgit Arrhenius and Gustaf Trotzig, pers. comm.).
   Despite assiduous rinsing, traces of the caustic
   soda can have remained behind and the salts can
   have penetrated into the stone. "

Laila Kitzler Åhfeldt (2002), "Work and Worship -
Laser Scanner Analysis of Viking Age Rune Stones"
page 21
http://www.archaeology.su.se/pdf/lksamman.pdf
[84pp, 8.8 mb]

--
º°º°º°º < Peter Alaca > º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°


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Relevant Pages

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