“AGE OF
TURQUOISE”?
Selected samples from Tazkaszgan (Tamdytau), Djaman Kaskyr
(Bukantau), and some samples collected in Karamanzar (Ilak) were
analyzed (n=32). The XRF analysis followed
the same procedures
outlined in a recent article published by
Carò, Schorsch, Smieska,
and Santarelli
(Bruker Artax/unfiltered Rh radiation at 50 kV, 600
μA, 1 mm collimator, 60 seconds live-time acquisition in a helium
atmosphere). Iron, copper, and zinc were used to characterize the
turquoise specimens and presented as ratios of the measured X-ray
intensities of each characteristic element X-ray lines (CuKα/ZnKα
and CuKα/FeKα).
Overall, Iranian reference specimens (
blue area
)
are characterized
by higher Cu/Zn ratios and lower Cu/Fe ratios than the Egyptian
reference samples (
yellow area
). XRF analysis of the newly collected
geological specimens from Kyzylkum suggests that these turquoise
stones can be clearly distinguished from Iranian and Egyptian stones
because of their low Cu/Zn and low Cu/Fe ratios (
pink area
). The
newly calculated ratios overlap the compositional fields occupied by
some objects of Central Asian provenance which
do not match any
of the Iranian or Egyptian artifacts included in the existing database,
implying that these probably originated in the Kyzylkum.
Resulting from the rising development of a
widespread academic interest in Central
Asia, the study of the so-called “Silk
Roads” has only recently become part of mainstream
archaeological research. Even so,
questions regarding
the functioning and provisioning of these exchange
networks require a multidisciplinary methodology that
rarely focuses on a single topic. The vast distribution of
turquoise objects speaks of intense contacts along these
routes and illustrates larger patterns of socioeconomic
behavior, thus presenting an
exceptional opportunity
to deepen our understanding of these processes in
regions and periods where historical accounts are
either inexistent or insufficient, such as Central Asia in
the centuries around our common era.
FINAL
REMARKS
Plaque |China
3rd-1st BCE
Belt Plaque | S. Siberia
4th-2nd BCE
Diadem | Kargali
2nd BCE-1st CE
Pendant | Tillya Tepe
1st CE
Necklace | Taxila
1st CE
Dagger | Dachi
1st CE
KYZYLKUM
Belt adornment with an eagle
and its prey | ca. 1st-2nd CE
Iran (?) | Met (17.190.2055)