As intimated by the book’s title, the purpose of the book is to
(a) Outline the principles of both structural geology and rock engineering (the latter via engineering rock mechanics) and (b) to explain with illustrative examples why the synthesis of the two  subjects is mutually beneficial.
2 Structural Geology and Rock Engineering The McGraw-Hill Dictionary of Scientific and Technical Terms defines structural geology as, “The branch of geology concerned with the form, arrangement and internal structure of the rocks” and rock mechanics as, “Application of the principles of mechanics and geology to quantify the response of rock when it is acted upon by environmental forces, particularly when human-induced factors alter the original ambient forces” <...>

Techniques of geologicmapping and geologicmap creation have changed significantly from traditional paper-based methods. Geologic mapping and data collection in the field is now primarily facilitated by mobile devices and dedicated geologic mapping software. Geologic map production has become a fully integrated process, importing digital data from the field and making use of cartographic software, such as ArcGIS and Adobe Illustrator, to create interactive geologic map products.

Structural geology is obviously one of the more important subjects for geoscientists working in petroleum industry. Folds and faults in deformed rocks make traps for hydrocarbon accumulation. Also, large-scale deformations, the so-called tectonics, control the architecture of petroliferous sedimentary basins. It is the primary job of a structural geologist to interpret geological map and field data, and infer geometry of large scale folds and faults. However, geoscientists with varied specializations and working with different kinds of data may also be called upon to make structural interpretations.

COSGROVE, J. W. The role of structural geology in reservoir characterization
ARCHER, J. S. Reservoir characterization and modelling: a framework for field development
FREEMAN, B., YIELDING, G., NEEDHAM, D. T. & BADLEY, M. E. Fault seal prediction: the gouge ratio method
CRAWFORD, B. R. Experimental fault sealing: shear band permeability dependency on cataclastic fault gouge characteristics
GABRIELSEN, R. H., AARLAND, R.-K. & ALSAKER, E. Identification and spatial distribution of fractures in porous, siliciclastic sediments