High-resolution paired analyses of δ¹³C_carb and δ¹³C_org from a new drill core from Gotland, Sweden, demonstrate asynchronous positive change in the carbon isotope records during the onset of one of the major Silurian biogeochemical events known as the Mulde Event or “Big Crisis”. The detailed carbon isotope record presented here provides Δ¹³C (the difference between δ¹³C_carb and δ¹³C_org) and allows the calculation of changes in organic carbon burial (f_org) throughout the late Wenlock. The paired data suggest a ~ 38% increase in f_org during the peak of the positive δ¹³C_carb excursion and the high-resolution record reveals several short-lived inflections in Δ¹³C that have not been previously identified. When combined with sedimentological and sequence stratigraphic data from multiple paleocontinents, the new data presented here provide strong evidence for a transient global decrease in CO₂, in support of previous interpretations of regression and global cooling coinciding with the Mulde Extinction Event.

δ的高分辨率配对分析¹³ Ç_{碳水化合物}和δ ¹³ C ^_组织从哥特兰，瑞典一个新的岩芯，被称为穆尔德河事件的主要志留系生物地球化学活动之一的发病过程中表现出的碳同位素记录异步积极变化或“大危机”。详细的碳同位素记录呈现这里提供Δ ¹³ C（δ之间的差¹³ Ç_{碳水化合物}和δ ¹³ Ç_有机有机碳埋藏，并允许变化的计算）（˚F_组织在整个文洛克晚期）。成对的数据表明，在1〜38％的增长˚F_组织正δ高峰期间，¹³ Ç_{碳水化合物}漂移和高分辨率记录揭示Δ几个短命的拐点¹³ Ç尚未以前确定。当与来自多个古大陆的沉积学和层序地层学数据相结合时，此处提供的新数据为CO ₂的瞬时总体下降提供了有力的证据，以支持先前对回归和整体冷却与Mulde灭绝事件一致的解释。