A new age model and chemostratigraphic framework for the Maastrichtian type area (southeastern Netherlands, northeastern Belgium)

Abstract

with details of the nature of the infringement. We will investigate the claim and if justified, we will take the appropriate steps.

The benthic foraminiferal response to the mid-Maastrichtian event in the NW-European chalk sea of the Maastrichtian type area

“…The Vijlen Member has been interpreted as the infill of a channel system that eroded during the late Campanian or early Maastrichtian (Felder & Bless, 1994) in a relatively flat nearshore area with large, parallel channels extending from Aachen to Gulpen and from Altembroeck to Lanaye (Keutgen et al, 2010). The sediments consist of fine-grained glauconitic chalk with an upwards increasing CaCO 3 content, from ∼50 to ∼90% (Felder & Bosch, 2000; Vellekoop et al, 2022). Near the top, small light grey flint nodules occur.…”

“…Full lines mark extinction levels that are relatively well constrained in time, while those less well constrained are indicated by dotted lines. Image is based on Vellekoop et al (2022). Inoceramid extinction references are as follows: 1 MacLeod & Huber (2001; age reassignment by Huber et al, 2008); 2 Dameron et al (2017); 3 Gómez-Alday et al (2004) and Batenburg et al (2014); 4 Chauris et al (1998); 5 Walaszczyk et al, (2010; age reassignment by Vellekoop et al, 2022).…”

“…One example of such a shallow, epicontinental chalk sea is that of the carbonate platform successions in the Maastrichtian type area in the Belgium-Netherlands border region near the cities of Liège (BE) and Maastricht (NL). Recently, the stratigraphic position of the MME in this area was constrained by bulk carbonate δ 13 C records from these successions (Fig 1; Vellekoop et al, 2022). The MME has been identified at two quarries (Hallembaye and the nearby ENCI; Figs.…”

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Fig. 2. (A) Paleogeographical setting of the type-Maastrichtian during the Maastrichtian, after Vellekoop et al (2022): open ocean in dark blue; shelf seas in light blue; landmasses in green. (B) Geographic location of the Maastrichtian type area in the Netherlands-Belgium border region.

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“…For the present study, quantitative foraminiferal assemblage data and a species-specific benthic δ 13 C record have been generated to examine the shallow-marine signature of the MME. This has been done by using a subset of samples derived from the high-resolution sample set (5 cm sample spacing) recovered from the ENCI and Hallembaye quarries within the context of the Maastrichtian Geoheritage Project (Vellekoop et al, 2019, 2022).…”