Relating lithofacies to hydrofacies: outcrop-based hydrogeological characterisation of Quaternary gravel deposits

Klingbeil, Ralf; Kleineidam, Sybille; Asprion, Ulrich; Aigner, Thomas; Teutsch, Georg

doi:10.1016/s0037-0738(99)00067-6

Cited by 112 publications

(99 citation statements)

References 36 publications

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“…Such complex sedimentological heterogeneity may induce a highly heterogeneous spatial distribution of hydrogeological parameter values in porous media at different scales (Klingbeil et al, 1999) and may consequently greatly influence subsurface fluid flow and solute migration (Koltermann and Gorelick, 1996). Because of the limited access to the relevant hydraulic properties, deterministic models often fall short in characterizing the subsurface heterogeneity and its inherent uncertainty.…”

Section: Introductionmentioning

confidence: 99%

Application of Multiple-Point Geostatistics on Modelling Groundwater Flow and Transport in a Cross-Bedded Aquifer

Huysmans

Dassargues

2010

Quantitative Geology and Geostatistics

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Section: Introductionmentioning

confidence: 99%

Application of Multiple-Point Geostatistics on Modelling Groundwater Flow and Transport in a Cross-Bedded Aquifer

Huysmans

Dassargues

2010

Quantitative Geology and Geostatistics

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“…The contribution of outcrop mapping to understanding of the subsurface geology should never be underestimated. An outcrop composed of a similar stratigraphy and lithologies as the aquifer may be viewed as a representation of the actual aquifer [13]. Accessible outcrops can be examined for spatial geological geometries and structures at a smaller scale investigation.…”

Section: Methodsmentioning

confidence: 99%

“…According to Klingbeil [13], hydrofacies are formed under comparable conditions and this often leads to similar hydraulic properties. Based on visual observations on grain size and texture analysis the sediments at the Krugersdrift study site were grouped into four separate hydrofacies ( Table 2).…”

Section: Lithological Hydrofaciesmentioning

confidence: 99%

Development of a Preliminary Hydrogeology Conceptual Model for a Heterogeneous Alluvial Aquifer using Geological Characterization

Tonder¹

2013

J Geol Geosci

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Geological characterization of a heterogeneous alluvial channel aquifer was conducted using outcrop mapping and analysis of lithological logs from 15 boreholes drilled at the site. The study was aimed at developing a preliminary hydrogeology conceptual model. A total of 12 lithological samples were tested in the laboratory using falling head permeameter to determine the hydraulic conductivity of each unconsolidated lithology unit. Shale and calcrete outcrops were observed on the study site. Outcrop mapping on the site also indicated the presence of a contact plane between the overlying unconsolidated sediments and the shale of the underlying bedrock where a groundwater discharge zone has been created. Geology logs show that the alluvial channel aquifer comprises of three distinct layered unconsolidated sediment materials (calcrete, clay-silt, sand-gravel deposited formations) that overlie low permeable shale formation. Geological lithology revealed the spatial variation in the nature and type of unconsolidated sediments deposits between boreholes that can influence groundwater occurrence and flow in the aquifer system. The gravel-sand aquifer layer that consists of medium to large pebbles is conceptually the main hydraulically conductive unit with an average laboratory determined hydraulic conductivity of 8.5 m/day. Hydraulic gradient calculated using a combination of boreholes ranges from 0.013-0.022.

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“…Therefore, they were identified as being formed by scour-pool fills (e.g. Siegenthaler and Huggenberger, 1993;Jussel et al, 1994;Klingbeil et al, 1999;Heinz et al, 2003;Huggenberger and Regli, 2006;Bayer et al, 2011). The trough-fill mostly consists of open ag framework -bimodal gravel couplet cross-beds (OW/BM in Table 1, see also Siegenthaler and Huggenberger, 1993;Huggenberger and Regli, 2006).…”

Section: Object and Process Based Modelsmentioning

confidence: 99%

Influence of conceptual model uncertainty on contaminant transport forecasting in braided river aquifers

Pirot

Renard

Huber

et al. 2015

Journal of Hydrology

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Keywords:Uncertainty Contaminant transport Modeling Braided river Aquifer Groundwater s u m m a r y Hydrogeologist are commonly confronted to field data scarcity. An interesting way to compensate this data paucity, is to use analog data. Then the questions of prediction accuracy and uncertainty assessment when using analog data shall be raised. These questions are investigated in the current paper in the case of contaminant transport forecasting in braided river aquifers. In using analog data from the literature, multiple unconditional geological realizations are produced following different geological conceptual models (Multi-Gaussian, Object-based, Pseudo-Genetic). These petrophysical realizations are tested in a contaminant transport problem based on the MADE-II tracer experiment dataset. The simulations show that reasonable contaminant transport predictions can be achieved using analog data. The initial concentration conditions and location regarding the conductivity heterogeneity field have a stronger influence on the plume behavior than the resulting equivalent permeability. The results also underline the necessity to include a wide variety of geological conceptual models and not to restrain parameter space exploration within each concept as long as no field data allows for conceptual model or parameter value falsification.

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Relating lithofacies to hydrofacies: outcrop-based hydrogeological characterisation of Quaternary gravel deposits

Cited by 112 publications

References 36 publications

Application of Multiple-Point Geostatistics on Modelling Groundwater Flow and Transport in a Cross-Bedded Aquifer

Application of Multiple-Point Geostatistics on Modelling Groundwater Flow and Transport in a Cross-Bedded Aquifer

Development of a Preliminary Hydrogeology Conceptual Model for a Heterogeneous Alluvial Aquifer using Geological Characterization

Influence of conceptual model uncertainty on contaminant transport forecasting in braided river aquifers

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