LATE HOLOCENE SEDIMENTARY RESPONSE TO SOLAR AND COSMIC RAY ACTIVITY INFLUENCED CLIMATE VARIABILITY IN THE NE PACIFIC

Abstract

Marine-laminated sediments along the NE Pacific coast (Effingham inlet, Vancouver Island) provide an archive of climate variability at annual to millennial scales. A 7.75-m portion of piston core TUL99B-03 was deposited during a ∼3045-year interval [∼1440–4485 years before present (yBP)] under primarily anoxic conditions. Darker clay laminae were deposited under higher precipitation conditions in winter, and diatom-dominated laminae were laid down when marine productivity was higher in the spring through autumn.