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首页> 外文期刊>Nafta >Depositional conditions during Pliocene and Pleistocene in Northern Adriatic and possible lithostratigraphic division of these rocks
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Depositional conditions during Pliocene and Pleistocene in Northern Adriatic and possible lithostratigraphic division of these rocks

机译：亚得里亚海北部上新世和更新世的沉积条件以及这些岩石可能的岩石地层划分

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摘要

In the area of Northern Adriatic Neogene and Quaternary sediments have relatively large thicknesses. Those are deposited in some depressions located inside Adriatic Basin, where is the largest Po Depression. Recent borders of Po Depression are located in Italian and Croatian offshore where hemipelagic sequences of Pliocene and Pleistocene were interrupted by Po palaeodelta progradations, and to a lesser extent of Adige and Piave Rivers. These sediments include important reservoirs with significant quantities of hydrocarbon gas, and it is why they are well explored in areas of Italian and Croatian gas fields by deep wells as well as different methods for subsurface imaging, mostly by reflective seismic. Sequence of Pliocene and Pleistocene sediments can reach thickness of 6 000 m, and it is divided in lithostratigraphic system with units in rank of f ormation. On Italian side Cenozoic sediments up to Mesozoic basement are divided in twelve formations, but on Croatian side has been described only one formation. It is Susak Formation that encompasses all Cenozoic rocks. It is why in Croatian part of Northern Adriatic in proposed introducing of the follovving lithostratigraphic units 8in rank of formation): Dinaridi Formation (Mesozoic rocks), Susak Formation (Palaeocene-Miocene rocks), Istra Formation (Pliocene sediments) and Ivana Formation (Pleistocene and Holocene sediments).
机译：在北部亚得里亚海的新近纪和第四纪沉积物具有相对较大的厚度。那些沉积物位于亚得里亚海盆地内最大的大De陷中的一些凹陷中。 Po洼地的最新边界位于意大利和克罗地亚的近海，那里的上新世和更新世的半中古层序被Po的古三角洲的发育所中断，而阿迪杰河和皮亚韦河的影响则较小。这些沉积物包括含有大量碳氢化合物气体的重要储层，这就是为什么在意大利和克罗地亚气田地区通过深井以及不同的地下成像方法（主要是反射地震）对它们进行了很好的勘探的原因。上新世和更新世的沉积层序可达到6 000 m的厚度，并按岩性地层系统划分，单位为岩性。在意大利方面，直至中生代基底的新生代沉积物被分为十二个地层，但在克罗地亚方面，仅描述了一个地层。 Susak组涵盖了所有新生代岩石。这就是为什么在北亚得里亚海的克罗地亚部分提议引入以下地层岩性格架单位：地层中第8级：Dinaridi组（中生代岩石），Susak组（古新世-中新世岩石），Istra组（上新世沉积物）和Ivana组（更新世）和全新世沉积物）。

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  • 来源
    《Nafta》 |2011年第2期|p.25-32|共8页
  • 作者

    J. Velić; T. Malvić;

  • 作者单位

    Faculty of Mining, Geology and Petroleum Engineering, Department of Geology and Geological Engineering, Pierottijeva 6, 10000 Zagreb;

    INA-lndustryof Oil, Plc, Sector for Geology and Geological Engineering, Šubićeva 29, 10000 Zagreb;

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  • 关键词

    lithostratigraphy, Pliocene, Pleistocene, Po Depression, North Adriatic, Croatia;

    机译：岩石地层学;上新世;更新世;大萧条;克罗地亚北亚得里亚海;

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