It is important that research outcomes be disseminated in a useful form to the clients of the research, and to the community at large if appropriate. The research monograph is a traditional mechanism for reporting substantial bodies of research which, taken together, advance the field to a significant degree. In 1996 the JKMRC published two such monographs, on comminution and blasting, in a series on mining and mineral processing. The present volume continues the series.

Acoustic logging relies on the analysis of seismic waves generated and recorded within a borehole. These waves provide information about the borehole, the surrounding formation, and the casing and cement of a cased hole. Since the early days, when a single source and single receiver were used, acoustic logging has advanced into a sophisticated system with a broad spectrum of applications aimed at obtaining information about the borehole and the surrounding medium. Many advanced technologies developed in recent years have improved our ability to extract additional information from acoustic logging. Among them is acoustic logging-while-drilling, in which real-time data are acquired in vertical, deviated, or horizontal wells while drilling. Another newly developed technology is borehole acoustic reflection imaging, which has the capability to delineate geological structures as far as 10–20 m away from the borehole. Other developments include high-tech sonic/ultrasonic methods, which can be employed to evaluate the condition of the cement bond in cased holes. In short, acoustic logging has grown into an extensive field with advanced applications. However, the most recent books concerning acoustic well logging were published more than 16 years ago (Paillet and Cheng 1991; Tang and Cheng 2004) and do not cover all of these newly developed technologies. To mitigate this gap in books, this book provides an in-depth review of acoustic logging using extensive numerical modeling examples of waves in and around a borehole to help visualize and understand the waveforms resulting from complicated boreholes and measurement geometries <...>

Borehole images now form a major part of the interpretation strategy for subsurface geological interpretation in a wide variety of scenarios. This volume attempts to document some case histories together with image acquisition and analysis techniques. It by no means covers the full breadth of the subject but is intended to provide a valuable source of information within one volume. We hope the broad spectrum of this text will encourage geologists to look outside their immediate areas of interest with the potential to learn from complementary work in other areas. <...>

Use of some petrologic diagrams applied to analyses of volcanic rocks is unnecessarily difficult due to lack of data for construction of discriminant lines between rock series. Coordinates are provided for sufficient points to enable accurate plotting of the boundary lines within seven diagrams, viz.: ( 1 ) TAS - total alkalies (Na20+K20) vs. SIO2; (2) K20 vs. SiO2; (3) AFM; (4) Jensen; (5) KTP - K20-TiO~-P205; (6)FMS- (FeO*/MgO) vs. SIO2; and (7) TAKTIP- K20/(Na20+K20) vs. TiOz/P2Os. Different versions of these boundaries are collated to indicate their variable position, and it is demonstrated that inter-laboratory analytical precision suffices to account for almost all of their spread on the TAS and K20 vs. SiO2 diagrams.