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. Global paleo-climate reconstructions are largely based on observations fromthe Northern Hemisphere despite increasing recognition of the importance ofthe Southern Hemisphere mid-latitudes for understanding the drivers of theglobal climate system. Unfortunately, the required complete andhigh-resolution terrestrial records from the Southern Hemispheremid-latitudes are few. However, the maar lakes in the Auckland Volcanic Field(AVF), New Zealand, are crucial in this regard as they form outstandingdepositional basins due to their small surface-to-depth ratio, restrictedcatchment, and absence of ice coversince their formation, hence ensuring continuous sedimentation with anoxicbottom water. Significantly, the estimated age of the AVF of ca. 250 ka mayallow development of a continuous sediment record spanning the last twoglacial cycles. The Orakei maar lake sediment sequence examined in this studyspans the Last Glacial Cycle (ca. 126 to ca. 9.5 ka cal BP) from thephreatomagmatic eruption to the crater rim breach due to post-glacialsea-level rise. Two overlapping cores of >100  m sediment were retrievedand combined to develop a complete composite stratigraphy that is presentlyundergoing a wide range of multi-proxy analyses.

Stratigraphy and sedimentology of the Orakei maar lake sediment sequence (Auckland Volcanic Field, New Zealand)