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The aquifer system of the Bunter reach thicknesses in the order of about 300 m. It is of great importance for the drinking water supply in the Grünstadt area. A systematic collection and documentation of groundwater data in terms of quantity and quality has not yet been carried out. So far the locally available data and time series are presented and discussed in temporal and spatial relation. In the present the water management is focusing on the local water catchment areas. Based on the presented observations it is recommended to understand the Bunter as large scale hydraulically communicating aquifer system and to manage it in this sense. For this additional hydrogeological investigations are required. Source


The results of tectonic outcrop measurements in the southeastern Trier Embayment, which were particularly described in the two preceding parts of this publication, and additional new results will be analyzed now. The relevant horizontal stress data are classified and graded. Compressional phenomena of different ages and sinistral resp. dextral shear movements are listed and depicted graphically. Furthermore the actual regional geological maps are interpreted. Fold structures and several strike-slip faults of varying directions are obvious. The horizontal throws amount to several hundreds of meters, often the kilometer-scale is reached (maximum: 3.2 km). Relations of age can also be recognized. The huge number of observations allows the identification of five groups of strain. They all comprise a former direction of maximal horizontal compression and the appropriate conjugated dextral and sinistral shear plane sets. One of these directional groups is documented twice, it characterizes subrecent times and a quite old episode. The next step of investigation is the chronological rating of these groups. For this the results from adjacent regions are taken into consideration. Six events of compressive deformation are reconstructed. They can be assigned to Upper Jurassic, early Lower Cretaceous, lower to middle Eocene, upper Oligocene, lower Miocene and a time span of plio-pleisto-holocene age (fig. 85, tab. 2). Source


Long term changing groundwater conditions in the Grünstadt Area are the trigger for current hydrogeological studies of the state water authority. In this context data from the archives of the Landesamt für Geologie und Bergbau (Department for Geology and Mining of Rhineland-Palatinate) were used to estimate rock permeabilities. The results are presented and discussed with reference to data given in the literature. Source


The Tectonic development in the Palatine Forest (Pfälzerwald) with its adjacent regions was studied. Own structural measurements and tectonic data derived from regional literature have been interpreted. Not only normal faulting but especially remains of horizontal crustal motions were analysed. The latter comprised strikeslip faults and accompanying shear joints and planes with oblique resp. horizontal slip striations. At the edge of the Upper Rhine Graben even folds and (oblique) thrust faults occur in the covering rocks of late permian and early triassic age. All these structures can be assigned to several different paleostress fields, which occured between Upper Jurassic and today (fig. 8 and 26). Especially accentuated were the strike-slip movements of early eocene times. They were caused by North-South-directed compressional stresses, slowly rotating clockwise (sl striking 161° to 10°). The horizontal fault throws reach 1.7 km. The shear tectonics of upper jurassic (sl: 80 to 95°) and upper oligocene age (sl: 35 to 45°) are noticeable, but of lower importance. The shear strains of lower cretaceous, middle miocene and subrecent age appear relatively weak. Important extensional phases happened in middle jurassic and in lower oligocene times. Interfering extension can also be traced in the Upper Pliocene-Pleistocene-Holocene time span. WSW-ENE striking structures of the basement, which had already been slightly active in lower Triassic times, were traced into the covering rocks of the (early) mesozoic Pfälzerwald-succession during middle Jurassic times and mobilized in different ways afterwards. Northwest-Southeast striking faults (so-called Querstörungen) are due to late variscan transfer faults (sensu STOLLHOFEN 1998) in the Paleozoic basement. They were traced into the covering rocks during Upper Jurassic while they have carried out sinistral shear motions. During early eocene times they were dextrally inverted and then, during Neogene, extensionally overprinted. Their traced fractures formed tectonical mobile zones of different width and consiseness, which are of high diagnostic value. Source


In the southeastern Trier-Luxemburg Embayment six events of compressive deformation have taken place since Upper Jurassic. In this paper they are reconstructed and numbered as DI to DVI. They are assigned to the Upper Jurassic, the late Lower Cretaceous, the lower to middle Eocene, the Upper Oligocene, the lower Miocene and finally to the subrecent plio-pleisto-holocene time span. The structural results of each deformation in the study area are described and illustrated by tectonic maps. Proven compressional structures are horizontal stylolites, slickolite striae. Source

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