High-precision (14)C and (40)Ar/(39)Ar dating of the Campanian Ignimbrite (Y-5) reconciles the time-scales of climatic-cultural processes at 40 ka.
High-precision (14)C and (40)Ar/(39)Ar dating of the Campanian Ignimbrite (Y-5) reconciles the time-scales of climatic-cultural processes at 40 ka.
复制标题
DOI：
10.1038/srep45940
复制
发表时间：
2017-04-06
影响因子：
4.6
通讯作者：
Nomade S
中科院分区：
文献类型：
--
作者：
Giaccio B;Hajdas I;Isaia R;Deino A;Nomade S
晚更新世坎帕尼亚伊格尼布里特(CI)超喷发(意大利南部)是地中海地区已知的最大火山事件。CI tephra广泛分布于欧亚大陆西部，与重大的古气候和旧石器时代文化事件密切相关。在这里，我们提供了新的高精度的CI喷发年龄的14C(34.29 ± 0.0914C Kyr BP，1σ)和40Ar/39Ar(39.85 ± 0.14ka，95%置信度)测年结果，大大改进或扩大了以前的年龄测定，并允许更充分地开发CI Tephra标志物的年代学潜力。这些结果提供了一对可靠的~(14)C和~(40)Ar/~(39)Ar年龄，以完善~(14)C和~(40)Ar/~(39)Ar定标曲线和约40ka的晚更新世时间尺度。此外，这些新的年龄限制提供了令人信服的年代学证据，证明了CI喷发和海因里希事件4对欧洲气候和旧石器时代早期潜在演化过程的联合影响的重要性。
The Late Pleistocene Campanian Ignimbrite (CI) super-eruption (Southern Italy) is the largest known volcanic event in the Mediterranean area. The CI tephra is widely dispersed through western Eurasia and occurs in close stratigraphic association with significant palaeoclimatic and Palaeolithic cultural events. Here we present new high-precision 14C (34.29 ± 0.09 14C kyr BP, 1σ) and 40Ar/39Ar (39.85 ± 0.14 ka, 95% confidence level) dating results for the age of the CI eruption, which substantially improve upon or augment previous age determinations and permit fuller exploitation of the chronological potential of the CI tephra marker. These results provide a robust pair of 14C and 40Ar/39Ar ages for refining both the radiocarbon calibration curve and the Late Pleistocene time-scale at ca. 40 ka. In addition, these new age constraints provide compelling chronological evidence for the significance of the combined influence of the CI eruption and Heinrich Event 4 on European climate and potentially evolutionary processes of the Early Upper Palaeolithic.