Holocene eruptive history of Mount Baker, Washington

New radiocarbon dates associated with volcanic ashes and lahars improve our understanding of the volcanic activity of Mount Baker, a 3284 m-high, ande sitic stratovolcano in the North Cascades, Washington. The geologic record shows that during the Holocene, four ashes and at least seven lahars were d eposited on the flanks of Mount Baker and in the nearby North Cascades. Her e, we document the ages of three previously undated ashes, the Schriebers M eadow scoria, the Rocky Creek ash, and the Cathedral Crag ash. Because Moun t Baker lies at the head of the Nooksack drainage, eruptive activity may in fluence areas downstream. Understanding the timing and characteristics of v olcanic eruptions from Mount Baker is useful from volcanic hazard and paleo climatological perspectives.