I disagree. I believe he knows, with great certainty, that the dated age of those samples is the last time they were exposed to air. I really think a sample that has been encased in snow and ice continuously for a thousand years and one that was thawed out in the middle of that time span for, what, a week? A year? A few years? I think they could be told apart very easily and with complete certainty.
Besides, do you have some OTHER paleoclimatological record that indicates Baffin Island has experienced a warm period during that span? And, please, we've heard enough about the MWP.
How about the Holocene Thermal Maximum then...WAY AFTER 40,000 years ago...
This contrasts with many sites on Iceland and across the Arctic that experienced an early to mid-Holocene "thermal maximum" in response to enhanced summer insolation forcing. Suppressed terrestrial temperatures along the northern coastal fringe of Iceland were most likely a result of sea surface conditions on the North Iceland shelf. In contrast, peak warmth on northeastern Baffin Island occurred during the first millennia of the Holocene, roughly in phase with peak insolation forcing. The magnitude of early Holocene warmth at Lake CF8 (5ºC warmer than present) far exceeds hemispheric averages, and implies that powerful positive feedbacks enhanced radiative forcing in this region. Early Holocene warmth was interrupted by two cold reversals between 9.5 and 8 ka, which may correlate with the well-known "8.2 event" and widespread abrupt climate changes that occurred ca. 9.2 ka. Maximum last-interglacial temperatures at Lake CF8 were not significantly different from peak Holocene temperatures.
http://udini.proquest.com/view/interglacial-temperature-goid:304887730/
Exposure history modeling indicates at least one additional prior period of ice cover of approximately 1000 years. This cold interval most likely occurred sometime since 4 ka, after the Holocene Thermal Maximum in the Arctic and coeval with the onset of Neoglaciation. Radiocarbon dating reveals that some plateau ice caps have been continuously present for more than 1000 years, whereas others formed early in the Little Ice Age (~520 cal BP). Even without additional warming, continuation of current climatic conditions on northern Baffin Island will result in the demise of all ice on the plateau, a condition that has not occurred for more than 1300 years.
Rapidly Melting Ice Caps of Northern Baffin Island: Insights From Cosmogenic and
Although the retreat chronology of the LIS during the late Pleistocene (21–11.5 ka BP) is relatively well constrained by hundreds of 14C dates and extensive moraines that document the age and position of the retreating ice margin, its subsequent Holocene retreat history remains poorly known with the exception of the Baffin Island/Foxe Basin region
(Fig. 1) (Dyke 2004; Miller et al. 2005).
http://www.geo.oregonstate.edu/files/geo/Carlson-2007-JClimate.pdf