Stratigraphic constraints for explosive activity in the past 100 ka at Etna Volcano, Italy
Stratigraphic constraints for explosive activity in the past 100 ka at Etna Volcano, Italy
复制标题
DOI：
10.1007/s005310000117
复制
发表时间：
2000-12-01
影响因子：
2.3
通讯作者：
Vezzoli, L
中科院分区：
文献类型：
--
作者：
Coltelli, M;Del Carlo, P;Vezzoli, L
埃特纳火山的火山碎屑沉积物首次与整个火山大厦进行了关联，从而可以构建从大约 100 ka 至今的火山灰生成事件的连续记录。在此区间内，已确定了五个主要的爆炸活动时期： (a) 类似于 100-ka 的斯特龙博利至亚普林活动； (b) 80-至100-ka普林尼本莫雷特活动； (c) 16-至80-ka斯特龙布阶到亚普林阶，从玄武岩到穆盖岩活动； (d) 15.5 至 15ka 普林尼本莫雷火山活动伴随着埃利蒂科火山形成火山口的喷发； (e) 目前建筑物最近的斯特龙博式和亚普林式类型的 Ij-ka 玄武岩爆炸活动，其中还包括公元前 122 年的建筑。普林尼式喷发。这项研究对埃特纳火山爆炸活动的强度和时间顺序进行了半定量和某些情况下的定量定义。此外，这项工作为埃特纳火山的火山危害赋予了新的意义，埃特纳火山通常被认为是温和喷发的地点。
The pyroclastic deposits of Etna have been correlated over the whole volcanic edifice for the first time, allowing the construction of a continuous record of tephra-producing events, which extends from approximately 100 ka to the Present. In this interval, five main periods of explosive activity have been identified: (a) similar to 100-ka strombolian to subplinian activity; (b) 80- to 100-ka plinian benmoreitic activity; (c) 16- to 80-ka strombolian to subplinian from basaltic to mugearitic activity; (d) 15.5- to 15-ka plinian benmoreitic activity accompanying the caldera-forming eruptions of the Ellittico Volcano; and (e) the most recent Ij-ka basaltic explosive activity of strombolian and subplinian type of the present edifice that also includes the 122-B.C. plinian eruption. This study results in a semi-quantitative and in some cases quantitative definition of the intensity and chronology of the explosive activity at Etna. Moreover, this work gives a new significance to the volcanic hazards of Etna, a volcano generally considered to be the site of gentle effusive eruptions.