Geologic mapping is defined as the examination of natural and manmade exposures of rock or unconsolidated materials, the systematic recording of geologic data from these exposures, and the analysis and interpretation of these data in two- or three-dimensional format (maps, cross sections, and perspective [block] diagrams). The maps and cross sections generated from these data:

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• Serve as a record of the location of factual data;

• Present a graphic picture of the conceptual model of the study area based on the available factual data; and

• Serve as tools for solving three-dimensional problems related to the design, construction, and/or maintenance of engineered structures or site characterization. 

 

NR Engineering Consultants’ highly experienced engineering geologists are well versed in collection and documentation of surface and subsurface geologic field data for use in the design, specifications, construction, or maintenance of engineered structures and site characterization studies. We provide the following engineering geological services:

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• Define, evaluate, and document site-specific geologic conditions relating to the design, construction, maintenance, and remediation of engineered structures or other sites.

• Carry out regionally based geologic studies, such as materials investigations or regional reconnaissance mapping.

 

As an engineering geologist, we realize that geologic mapping for site characterization is a dynamic process of gathering, evaluating, and revising geologic data and that the significance of these data, both to the structure and to further exploration, must be continually assessed. An engineering geologist engaged in geologic mapping is responsible for:

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• Recognizing the key geologic conditions in a study area that will or could significantly affect hazardous and toxic waste sites or a proposed or existing structure;

• Integrating all the available, pertinent geologic data into a rational, interpretive, three-dimensional conceptual model of the study area and presenting this conceptual model to design and construction engineers, other geologists, hydrologists, site managers, and contractors in a form that can be understood.

 

The key to understanding the site geology is through interpretive geologic drawings such as geologic maps, cross sections, isopachs, and contour maps of surfaces.  These working drawings, periodically revised and re-interpreted as new data become available, are continuously used to assess the effects of the site geology and to delineate areas where additional exploration is needed. These drawings are used in designs, specifications, and modeling and maintained in the technical record of the project.