Mineralogical assemblage in sediment core GeoB12309-5 and in area samples from the Makran subduction zone

In order to study late Holocene changes in sediment supply into the northern Arabian Sea, a 5.3 m long gravity core was investigated by high-resolution geochemical and mineralogical techniques. The sediment core was recovered at a water depth of 956 m from the continental slope off Pakistan and covers a time span of 5 kyr. During the late Holocene source areas delivering material to the sampling site did, however, not change and were active throughout the year.为探究阿拉伯海北部晚全新世的沉积物补给变化，研究团队对一根长5.3米的重力岩心采用高分辨率地球化学与矿物学技术进行了分析。该沉积岩心采自巴基斯坦外大陆坡，采集水深为956米，沉积时间跨度达5千年。不过，晚全新世时期，向该采样点输送沉积物的物源区并未发生变化，且全年均处于活跃状态。