Hudson Volcano

Pyroclastic fall and tephra deposits from Hudson and other volcanoes have been identified in marine cores in the Pacific Ocean, sediments in lakes and peat bogs, in soils, and potentially in Antarctic ice cores. Such tephra layers can be used to compare the timing of events across wide regions. Tephra particles from Hudson have varying shapes and colours, but similar compositions. The closest tephra record to Hudson is the Laguna Miranda record away, which shows on average one tephra layer every 225 years although it only records eruptions that distributed ash in the direction of the lake. Several Hudson tephra layers from Juncal Alto have been named T1 through T9, and another set from lakes in the Chonos Archipelago and Taitao Peninsula is named HW1 through HW7.