Geologic Environment
Learning Objectives
Core Component

I. Objectives
    This module defines the broad sweep of the three dimensional geometry and variability of geological materials. The goal of the module is for the student to understand the complexity of the subsurface as well as the role geologic processes play in limiting the range of geometries and variability. This three dimensional geologic geometry and variability serves as the foundation for all models of the subsurface.

II. Learning Objectives
    The student will be able to

A. Interpret Air Photos
B. Define variability of engineering properties within lenses/layers/strata
C. Define geometries of the residual soil interface between rock and soil
D. Define geometries of the principal types of transported soils deposits
E. Define geometries of the principal types of rock deposits. These principles and geometries are based upon and supplemented with examples of deposit types. Each example contains stereo air photo pairs of the deposit type, boring logs of a typical example, and an idealized cross sections that demonstrate relative the 3D geometry and variability. This presentation method was inspired by those given by two of the grand masters, Ralph Peck and George Sowers.

    The stereo photographs are presented in anaglyph form so that they can been seen in 3D with inexpensive red and blue photographs. See the information on the home page for requesting these glasses. If you subscribe to National Geographic, their August 1998 issue contained two pair of these glasses that can be used while waiting for a pair that do not have to be hand held.

III. Prerequisites
    The student should have a course in Physical Geology, Engineering Geology, or Soil Mechanics. The instructor must have at least minored in Geology or Engineering Geology.

IV. Relationship to Other Modules
    This module belongs to the Site Characterization group and is most closely related to the modules on Geophysical Methods, In-situ Testing, as well as Data Analysis and Geostatistics in the Decision Support group.

V. Key Words
    engineering properties, three dimensional geometry, subsurface deposits, soil, rock, variability