A key continental archive for the last 2 Ma of climatic history of the central Mediterranean region: A pilot drilling in the Fucino Basin, central Italy

IF 1.6 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Scientific Drilling Pub Date : 2015-12-17 DOI:10.5194/SD-20-13-2015

B. Giaccio, E. Regattieri, G. Zanchetta, B. Wagner, P. Galli, G. Mannella, E. Niespolo, E. Peronace, P. Renne, S. Nomade, G. Cavinato, P. Messina, A. Sposato, C. Boschi, F. Florindo, F. Marra, L. Sadori

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引用次数: 19

Abstract

Abstract. An 82 m long sedimentary succession was retrieved from the Fucino Basin, the largest intermountain tectonic depression of the central Apennines. The basin hosts a succession of fine-grained lacustrine sediments (ca. 900 m-thick) possibly continuously spanning the last 2 Ma. A preliminary tephrostratigraphy study allows us to ascribe the drilled 82 m long record to the last 180 ka. Multi-proxy geochemical analyses (XRF scanning, total organic/inorganic carbon, nitrogen and sulfur, oxygen isotopes) reveal noticeable variations, which are interpreted as paleohydrological and paleoenvironmental expressions related to classical glacial–interglacial cycles from the marine isotope stage (MIS) 6 to present day. In light of the preliminary results, the Fucino sedimentary succession is likely to provide a long, continuous, sensitive, and independently dated paleoclimatic archive of the central Mediterranean area.

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地中海中部地区最近2 Ma气候历史的重要大陆档案:意大利中部富西诺盆地的试点钻探

摘要在亚平宁山脉中部最大的山间构造坳陷——富西诺盆地中获得了一条长达82 m的沉积序列。该盆地拥有一系列细粒度湖泊沉积物(约900米厚)，可能连续跨越过去2 Ma。初步的地层研究使我们能够将钻探的82米长的记录归因于最近180 ka。多代理地球化学分析(XRF扫描，总有机/无机碳，氮和硫，氧同位素)显示了明显的变化，这些变化被解释为从海洋同位素阶段(MIS) 6到现在与经典冰期-间冰期旋回相关的古水文和古环境表达。初步结果表明，富西诺沉积序列可能为中地中海地区提供了一个长、连续、敏感、独立定年的古气候档案。

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