The Southern Volcanic Zone of the Andes (∼33–46° S) is a very active volcanic zone with several volcanic centers recording recurrent historical activity (e.g. Llaima, Villarrica, Puyehue-Cordón Caulle, Osorno, Calbuco and Hudson). Tephrochronology is a valuable tool to help better understand the eruptive history of volcanic centers, essential for producing volcanic hazard maps. Additionally, tephrochronology can also be very useful to synchronize stratigraphic records of different nature such as paleoclimatological, paleoceanographical and archaeological records on land, lakes, ice and the ocean. Here we present a (crypto) tephrochronological record from two marine sediment cores retrieved in the Chilean continental margin at ∼41° S and ∼41.6° S. The records display continuous sedimentation since the late glacial, as robustly constrained by planktonic foraminifera δ¹⁸O and ¹⁴C dates. During this period, twenty three cryptotephras were identified as glass shard peaks together with two ∼25–30 cm–thick visible tephras (one in each core). The source of the (crypto) tephras was mainly constrained by major and trace element geochemistry of individual glass shards together with their stratigraphic position, since it is not possible to observe physical characteristics, such as color and grain size, when analyzing cryptotephras. From these, one cryptotephra was robustly correlated with the HW7 eruption from the Hudson volcano occurring in the Late Holocene at ∼1.5 cal ka BP; and the two visible tephra layers were identified as distant correlatives of the Lepué tephra originating from Michinmahuida volcano and occurring in the Deglaciation/Holocene transition at around 11 cal ka BP. Additionally, eight cryptotephra occurring at ∼3.6, 6.2, 7.0, 8.5, 9.6, 14.2, 15.9 and 18.2 cal ka BP were robustly identified as sourced from Michinmahuida volcano but where otherwise not correlated, providing novel evidence of pre Holocene activity of this volcanic center.

安第斯山脉南部火山带（约33-46°S）是一个非常活跃的火山带，几个火山中心记录了经常性的历史活动（例如Llaima，Villarrica，Puyehue-CordónCaulle，Osorno，Calbuco和Hudson）。年代记是一种有价值的工具，可以帮助您更好地了解火山中心的爆发历史，这对于绘制火山灾害图至关重要。另外，年代相年代学对于同步不同性质的地层记录也非常有用，例如在陆地，湖泊，冰和海洋上的古气候学，古海洋学和考古学记录。在这里，我们提供了一个来自（智利）大陆时间边缘（〜41°S和〜41.6°S）的两个海洋沉积物岩心的（加密）年代学记录。这些记录显示了自晚冰期以来连续的沉积，¹⁸ O和¹⁴C日期。在此期间，二十三个隐触角被鉴定为玻璃碎片峰，还有两个约25至30 cm厚的可见特弗拉斯（每个核心一个）。（隐）特非拉斯的来源主要受单个玻璃碎片的主要和微量元素地球化学及其地层位置的限制，因为在分析隐孢子虫时无法观察到物理特征，例如颜色和晶粒大小。从这些结果中，一个隐足目与新世晚期〜1.5 cal ka BP发生的哈德逊火山喷发的HW7强烈相关。并且两个可见的特菲拉层被确定为起源于密钦马惠达火山的勒普特特菲拉的远缘相关性，并发生在11 cal ka BP左右的冰期/全新世相变中。此外，