IODP Leg 340 - Talling salary

这笔资金将使塔林成为IODP Leg 340的船上科学家，该项目将在小安的列斯群岛的蒙特塞拉特岛、多米尼加岛和马提尼克岛火山岛周围的10个地点进行钻探。第340号法案有三个主要目的；1. 为了更好地了解由侧翼崩塌产生的大型火山碎屑雪崩的时间和就位过程，从而更好地了解火山和海啸灾害。以不寻常的细节记录长期（2-10 Ma）喷发历史，以指导对未来火山活动的预测（包括小安的列斯群岛和更广泛的地区），并更好地了解火山岛的形成和破坏周期；记录长期岩浆演化（以及这与喷发历史和侧翼塌陷时间的关系），以了解火成岩过程（如部分熔融、岩浆分化和运输）如何产生弧壳。六个孔将主要针对近海蒙特塞拉特（CARI 02 & 03）、多米尼加（CARI 05 & 06）和马提尼克岛（CARI 07 & 08）海底以下200米内的近期（< 250 ka）碎屑雪崩沉积物。滑坡产生的浊积物和长期的喷发记录将通过碎片雪崩外的四个洞恢复。这4个孔将恢复~2 ~ 10 Ma的沉积物。Leg 340将提供第一个穿透火山碎屑雪崩沉积物的岩心。以前的钻探地点（如加纳利群岛和夏威夷群岛附近的842/843、953-956和1223号孔）都远离雪崩沉积物（例如远浊积岩）。这些巨大坍塌事件的安置过程和随之而来的海啸产生的潜力，人们了解得很少，而且极具争议。将IODP岩心与NERC之前收集的三维和二维地震数据相结合，将为碎片雪崩的时间、触发和就位过程提供强有力的新见解。

This funding will allow Talling be an onboard scientist for IODP Leg 340 that will drill ten sites around the volcanic islands of Montserrat, Dominica and Martinique in the Lesser Antilles. Leg 340 has three main aims; 1. to better understand the timing and emplacement processes of large volcanic debris avalanches produced by flank collapse, and hence to better understand volcanic and tsunami hazards, 2. to document in unusual detail long term (2-10 Ma) eruptive history to guide prognosis of future volcanic activity (both in the Lesser Antilles and more generally), and to better understand cycles of volcanic island construction and destruction, 3. to document long term magmatic evolution (and how this relates to eruption history and timing of flank collapse) in order to understand how igneous processes (such as partial melting, magma differentiation and transport) generate arc crust. Six holes will primarily target recent (< 250 ka) debris avalanche deposits offshore Montserrat (CARI 02 & 03), Dominica (CARI 05 & 06), and Martinique (CARI-07 & 08) within the upper 200 m below sea floor. Landslide-derived turbidites and a longer term eruption record will be recovered by four holes outside the debris avalanches. These four holes will recover sediment dating back to ~2-10 Ma. Leg 340 will provide the first cores to penetrate through a volcanic debris avalanche deposit. Previous drill sites (such as Holes 842/843, 953-956 & 1223 around Canary and Hawaiian Islands) were all located away from avalanche deposits (e.g. in distal turbidites). The emplacement process and consequent tsunami generating potential of these huge collapse events is poorly understood and highly controversial. Combining the IODP cores with 3-d and 2-d seismic data collected previously by NERC will provide powerful new insights into the timing, triggers and emplacement process of debris avalanches.