  We present a detailed abundance analysis for 21 elements based on high
dispersion, high spectral resolution Keck spectra for four members of the outer
halo ``young'' Galactic globular cluster Pal 12. All four stars show identical
abundance distributions with no credible indication of any star-to-star
scatter. However, the abundance ratios of the Pal 12 stars are very peculiar.
There is no detected enhancement of the alpha-elements; the mean of [Si/Fe],
[Ca/Fe] and [Ti/Fe] is -0.07\pm0.05 dex, O/Fe is also Solar, while Na is very
deficient. The distribution among the heavy elements shows anomalies as well.
These are inconsistent with those of almost all Galactic globular clusters or
of field stars in the Galaxy. The peculiarities shown by the Pal 12 stars are,
however, in good general agreement with the trends established by by
Smecker-Hane & McWilliam and by Bonifacio et al for stars in the Sgr dSph
galaxy evaluated at the [Fe/H] of Pal 12. This reinforces earlier suggestions
that Pal 12 originally was a cluster in the Sgr dSph galaxy which during the
process of accretion of this galaxy by our own was tidally stripped from the
Sgr galaxy to become part of the extended Sgr stream.
