Deformed Layer 2
Deformation Layer 2 at Nahal Darga occurs in
stratigraphic unit 6 and is dated by
Enzel et al. (2000) to ca. 6050 BCE
(ca. 8000
yr B.P.). The deformed bed is
15–20 cm thick and consists of very fine sand. It
is described as the only directly fault-related
deformation among the deformed beds, and also as
the one with the most limited distribution. The
principal deformation features are
convoluted laminations and one
load cast.
The deformation appears to have formed in
water-saturated, near-shore fan-delta sediment.
Because Enzel et al. (2000) describe this layer as
directly associated with a minor fault, it differs
from most of the other deformed beds, which are
more widely distributed and are not directly tied
to exposed fault splays. The feature is consistent with
earthquake-induced
liquefaction and soft-sediment
deformation, but with a stronger local structural
component than most of the other deformed layers.
Dating is based on
radiocarbon dating and
stratigraphic correlation within the fan-delta
sequence;
Bayesian modeling was not used in
the age determinations.