3D Modelling of Geology and Soils – A Case Study from the UK

Smith, B.; Kessler, Holger; Scheib, Andreas; Brown, Sarah; Palmer, R.; Kuras, O.; Scheib, C.; Jordan, Colm

doi:10.1007/978-1-4020-8592-5_15

Cited by 2 publications

(1 citation statement)

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“…The 3D geological model construction software used is Geological Surveying and Investigation in 3D (GSI3D). This software uses the same principles, albeit in digital formats that geologists use to make geological maps and cross-sections (Kessler and Mathers 2004;Smith et al 2008). In summary, the software combines a digital terrain model, geological surface linework and downhole borehole data in order to create regularly spaced intersecting cross-sections by correlating borehole data and the outcrop-subcrops of units.…”

Section: D Model Generationmentioning

confidence: 99%

Using integrated near‐surface geophysical surveys to aid mapping and interpretation of geology in an alluvial landscape within a 3D soil‐geology framework

Tye

Kessler

Ambrose

et al. 2010

Near Surface Geophysics

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An integrated geological, geophysical and remote sensing survey was undertaken as part of the construction of a high resolution 3D model of the shallow subsurface geology of part of the Trent Valley in Nottinghamshire, U.K. The 3D model was created using the GSI3D software package and geophysical techniques used included Ground Penetrating Radar (GPR), Electrical Resistivity Tomography (ERT) and Automated Resistivity Profiling (ARP). In addition, the remote sensing techniques of Light Detection and Ranging (LIDAR) and Airborne Thematic Mapping (ATM) were used. The objective of the study was to assess the contribution of these techniques to improve the geological mapping and interpretation of terrace deposits and other geological features. The study site had an area of ~2 km 2 and consisted of a Triassic mudstone escarpment, overlain first by a sand and gravel river terrace that extended to the modern floodplain of the River Trent. ARP mapping proved to be the central tool in identifying and positioning geological features at a greater resolution than would be obtained through traditional geological mapping and borehole observation. These features included (i) a buried cliff delineating the south eastern limits of the incised Trent valley, (ii) siltstone beds within the Gunthorpe Member of the Mercia Mudstone Group and (iii) the variability of the sediments within the river terrace. A long ERT transect across the site successfully imaged the buried cliff and outcropping siltstone beds on the escarpment. Combined ERT and GPR transects revealed the depth of the sand and gravel deposits (Holme Pierrepont sands and gravels), whilst the GPR provided information about the depositional environment. Remote sensing using LIDAR proved essential in the original geological survey because it confirmed the absence of a second river terrace that had been previously thought to exist. This case study demonstrates the importance of combining geophysical techniques with traditional geological survey and borehole analysis, in order to create high-resolution 3D geological models, which are increasingly being used as a platform to understand and solve environmental problems.3

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Section: D Model Generationmentioning

confidence: 99%