Cone Penetration Test characterization of middle and upper Miocene lithostratigraphic units near Antwerp International Airport

IF 1.2 4区 地球科学 Q2 GEOLOGY Geologica Belgica Pub Date : 2022-09-09 DOI:10.20341/gb.2022.002
J. Deckers, Stijn Goolaerts
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Abstract

Recently published multidisciplinary studies discussed the glauconiferous sand units of the Berchem and Diest formations in large temporary outcrops near the Antwerp International Airport, east of the City of Antwerp, northern Belgium. At this location, the upper Miocene Diest Formation was subdivided into an upper Deurne Member and a lower, recently introduced, Borsbeek Member. In the current study, Cone Penetration Tests performed near the outcrops were used to geotechnically characterize the exposed units for regional correlations. For the Kiel and Antwerpen members of the middle Miocene Berchem Formation, the geotechnical expressions are nearly identical to those recently described further west in the City of Antwerp area. Contrary to the latter area, however, the upper part of the Antwerpen Member is missing, due to erosion below the Borsbeek Member. This erosion reached up to the level of a regionally occurring, compact shell bed in the middle of the Antwerpen Member, which may have protected the underlying sand from further erosion. Throughout the study area, the Borsbeek and Deurne members each show a consistent geotechnical facies, allowing for them to be distinguished on electric CPTs and thus for more reliable predictions of their areas of occurrence.
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安特卫普国际机场附近中、上中新世岩石地层单元的锥入试验表征
最近发表的多学科研究讨论了比利时北部安特卫普市东部安特卫普国际机场附近大型临时露头中的Berchem和Diest地层的海绿石砂单元。在这个位置,上中新统Diest组被细分为上Deurne段和最近引入的下borsheek段。在目前的研究中,在露头附近进行的锥突测试被用于地质技术特征暴露单元的区域相关性。对于中新世中期Berchem组的Kiel和Antwerpen成员,地质技术表达式与最近在安特卫普市西部地区描述的几乎相同。然而,与后一个区域相反,由于borsheek成员下方的侵蚀,Antwerpen成员的上部缺失。这种侵蚀达到了区域性发生的水平,在安特卫普段中部形成了致密的壳层,这可能保护了下面的沙子免受进一步的侵蚀。在整个研究区域,borsheek和Deurne成员都显示出一致的地质技术相,这使得它们可以通过电cpt进行区分,从而更可靠地预测其发生区域。
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来源期刊
Geologica Belgica
Geologica Belgica 地学-地质学
CiteScore
4.70
自引率
27.80%
发文量
8
审稿时长
>12 weeks
期刊介绍: Geologica Belgica is a Belgian journal that welcomes papers concerning all aspects of the earth sciences, with a particular emphasis on the regional geology of Belgium, North West Europe and central Africa. Papers not dedicated to the geology of Belgium, North West Europe and central Africa are only accepted when one of the authors is linked to a Belgian University or Institution. Thematic issues are highly appreciated. In this case, guest editors take in charge the selection of the manuscripts and the subject of the papers can be enlarged. The journal is in open access. Submitted manuscripts should be concise, presenting material not previously published. The journal also encourages the publication of papers from Belgian junior authors. Short letters are accepted. Papers written in English are preferred. Each mansucript will be reviewed by at least two reviewers.
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