Observations on the Pliocene sediments exposed at Antwerp International Airport (northern Belgium) constrain the stratigraphic position of the Broechem fauna
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引用次数: 8
Abstract
1. Introduction The Antwerp harbour region (Belgium) is well known for its thick and fossil-rich Pliocene successions (e.g. Vervoenen, 1995; Marquet, 1998, 2002, 2004, 2005; Marquet et al., 2009; Duboys de Lavigerie et al., 2020; Tsai et al., 2020). To the east these units become thin and discontinuous and often are affected by decalcification and reworking and the stratigraphic subdivision is not well understood (Marquet, 1980; Bisconti & Bosselaers, 2020; Bosselaers et al., 2004). To the southeast of Antwerp a Pliocene fauna has been documented that has a specific taphonomic character and species composition (Marquet, 1980; Wesselingh in van Bakel et al., 2003). This so-called Broechem fauna is found in brown-reddish spherical sandstone nodules of up to circa 15 cm long, and is dominated by single and paired specimens of a number of large bivalve species, partially as moulds, including Cyrtodaria angusta, Arctica islandica, Acanthocardia aff. aculeata, Cardiidae indet. (sensu Wesselingh in van Bakel et al., 2003) and Callista chione. The presence of Pygocardia rustica forma tumida implies an Early Pliocene age (Marquet, 1980; Wesselingh in van Bakel et al., 2003; Bosch & Wesselingh, 2006). Marquet (1980) reported the Broechem fauna mostly ex situ from a gravel interval supposedly attributed to the Kattendijk Formation overlying upper Miocene Diest Formation deposits at temporary outcrops for the construction of a water basin between the villages of Broechem and Oelegem. How
1. 安特卫普港区(比利时)以其厚厚的和富含化石的上新世序列而闻名(例如Vervoenen, 1995;Marquet, 1998,2002, 2004, 2005;Marquet et al., 2009;Duboys de Lavigerie et al., 2020;Tsai等人,2020)。在东部,这些单元变得薄而不连续,经常受到脱钙化和改造的影响,地层细分不清楚(Marquet, 1980;Bisconti & Bosselaers, 2020;Bosselaers et al., 2004)。在安特卫普东南部,有记录的上新世动物群具有特定的地语学特征和物种组成(Marquet, 1980;Wesselingh in van Bakel et al., 2003)。这种所谓的Broechem动物群是在长约15厘米的棕红色球形砂岩结核中发现的,主要是一些大型双壳类物种的单个和成对标本,部分为霉菌,包括Cyrtodaria angusta, Arctica islandica, Acanthocardia affa . aculeata, Cardiidae indet。(sensu Wesselingh in van Bakel et al., 2003)和Callista chione。Pygocardia rustica forma tumida的存在暗示了上新世早期(Marquet, 1980;Wesselingh in van Bakel et al., 2003;Bosch & Wesselingh, 2006)。Marquet(1980)报道说,Broechem动物群大多来自一个砾石层,据推测是由Kattendijk组在上中新世Diest组沉积物上形成的,这些沉积物是为了在Broechem和Oelegem村庄之间建造一个盆地而临时露头的。如何
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.