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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Evidence for Late Pleistocene uplift at the Somma-Vesuvius apron near Pompeii
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Evidence for Late Pleistocene uplift at the Somma-Vesuvius apron near Pompeii

机译：庞贝城附近Somma-Vesuvius围裙晚更新世隆升的证据

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摘要

Detailed stratigraphic and micropalaeontological analyses of samples from boreholes at the Somma-Vesuvius apron, between Pompeii and the sea, allowed reconstruction of Late Quaternary palaeoenvironmental evolution of the Sarno coastal plain. In all, 116 samples were recovered from seven boreholes drilled from 2-10 m a.s.l. to 16.5-26 m b.s.l. Microfossil assemblages, with special regard to benthic foraminifers and ostracods, were used to reconstruct the depositional palaeoenvironment. Fossil remains show that all the pre-79 AD fossiliferous sediments from 2 to —24 m a.s.l. were deposited in shallow marine waters for a long time despite an appreciable sea level rise. The data indicate alternation of both shallow marine and subaerial conditions during the last -15 kyr, evidencing ground uplift of the area of about 75 m at a rate of ~5 mm/year. Marine sediment accumulation (~6m/kyr) and tectonic uplift long offset the sea level rise, and as a consequence, submerged areas remained the same as well.
机译：对庞贝城和海洋之间索马-维苏威火山停机坪钻孔的样品进行详细的地层学和微古生物学分析，可以重建萨尔诺沿海平原的晚第四纪古环境演化。总共从2-10 m a.s.l.钻出的七个钻孔中回收了116个样品。至16.5-26 m b.s.l.微化石组合，特别是对底栖有孔虫和成虫的组合，被用来重建沉积古环境。化石遗迹表明，公元79年以前所有的化石沉积物为2至24 m a.s.l.。尽管海平面明显上升，但它们仍长时间沉积在浅海中。数据表明，在最后-15年内，浅海和海底条件交替发生，表明地面隆起约75 m，速率约为5 mm /年。海洋沉积物堆积（〜6m / kyr）和构造隆升长期抵消了海平面的上升，因此，淹没区域也保持不变。

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