Abrupt climate oscillations during the last deglaciation in central North America

Evidence from stable isotopes and a variety of proxies from two Ontario Lak es demonstrate that many of the Late glacial-to-early Holocene events that are well known from the North Atlantic seaboard, such as the Gerzensee-Kill arney Oscillation (also known as the Intra-Allerod Cold Period), Younger Dr yas, and Preboreal Oscillation, also occurred in central North America. The se results thus imply that climatic forcing acted in the same manner in bot h regions and that atmospheric circulation played an important role in the propagation of these events.