Abstract
Abstract. A description and classification of the successions of the new scientific core drillings at Heidelberg is presented. Since 2002 drilling and research activities were ongoing in the Heidelberg Basin (HDB), as a mid-continental sedimentary archive within the Upper Rhine Graben (URG), Germany. The HDB is supposed to host one of the longest continuous successions of Quaternary sediments in Europe, due to continuous subsidence of the basin and sediment input from various sources. The HDB is about half-way between the Alpine source area of the Rhine and the North Sea. Here the Quaternary input is least affected by discontinuities due to climate events as alpine glacier meltdown events or periods of low sea level. Reversely, the low influence of climate leads to a larger tectonic control. The sedimentary succession of more than 500 m is considered as primarily controlled by tectonics, but with incorporated climate signals. For classification purposes, sediment provenance, lithofacies-associations, and the ratio of accommodation space and sediment input are used. Some biostratigraphic markers are also available. We suggest a sedimentary scenario where the overall fluvial environment is twice interrupted by lacustrine intervals. The accommodation space varies too: in one period it expands even beyond the eastern boundary fault of the HDB.
Highlights
This paper summarises first results and impressions of the newly cored research borehole at Heidelberg
The fines to follow are, in parts lacustrine and related to a final pulse of subsidence, only of local importance. We suggest this has to do with the pattern of Rhine sediments through time in the Heidelberg Basin“ (HDB)
In Heidelberg, the overall depocentre of the HDB, the Rhine signal begins at 299 m (Eburonian) and ends at 190 m (Waalian);
Summary
This paper summarises first results and impressions of the newly cored research borehole at Heidelberg It is located at the depocentre of the „Heidelberg Basin“ (HDB), close to the eastern margin of the northern Upper Rhine Graben (URG). Two other boreholes representing other parts of the HDB are the borehole of Viernheim in the geographic centre of the basin (HOSELMANN 2008), and the borehole of Ludwigshafen at the western margin (WEIDENFELLER & KÄRCHER 2008, ROLF, HAMBACH & WEIDENFELLER 2008; Fig. 1). Their sediments are both dominated by input of the Rhine. Das Neckartal ist in den südlichen Odenwald eingeschnitten, wie auch das verlassene Neckartal bei Mauer mit seiner Talverschüttung
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