Tephrostratigraphy of proximal pyroclastic sequences at Mount Melbourne (northern Victoria Land, Antarctica): Insights into the volcanic activity since the last glacial period

We report on the characterization of a thick sequence pyroclastic deposits exposed summit area and flanks Mount Melbourne volcano, in northern Victoria Land, Antarctica related to eruptions during Late Glacial period. provide complete tephra including mineralogy, single shard major- trace-element glass compositions, an 40Ar-39Ar age feldspar crystals extracted from deposit. The are trachybasaltic trachytic composition interpreted have resulted four Strombolian/Vulcanian sub-Plinian/Plinian eruptions. younger more intense eruption (our 2) yielded 13.5 ± 4.3 ka (±2σ). study proximal provides significant new data for reconstruction volcano eruptive history better assessment volcanic risk connected possible future eruption. also explore geochemical correlations between distal layers recognized ice cores blue fields East Antarctica. A good match exists products 2 some Talos Dome shards Siple which is compatible (c. 9.3 ka) with our determination. Our insights into high-quality electron microprobe trace element its will help improve synchronization archives region.