This inference agrees with several studies indicating a distinct shift to cooler and more snow rich conditions (Neoglaciation
) around that time (e.g., Karlen, 1976; Caseldine and Matthews, 1987; Snowball and Sandgren, 1996; Bergman et al., 2005; Paus, 2010; Kullman, 2013).
The impact of so-called Neoglaciation
(the cooling climate which is said to have occurred at around 4500-4000 cal BP) has been a topic of debate (e.g.
and Thomson, B., 1986, Neoglaciation
in the southern Coast Mountains of British Columbia: Chronology prior to the late Neoglacial maximum: Canadian Journal of Earth Sciences, v.
Accumulation over the last 2000 years is especially noticeable and may broadly correlate to the Neoglaciation
(Denton and Stuiver, 1967).
The last major switch broadly correlates with the onset of Neoglaciation
. Variations in the path and strength of the TPD may have important oceanographic and climatic consequences downstream in the North Atlantic Ocean.
According to the Yarboroughs, archaeological and geological investigations suggest that after late Ocean Bay II times, neoglaciation
precluded most of the Sound's being the seat of Early Kachemak development (see also Mills, 1994:129-130, Fig.
However, expansion of glaciers during Neoglaciation
, with the Kaskawulsh Glacier advancing to near its present limit, led to reactivation of the Slims valley train and renewed loess deposition downwind from the Slims River delta.