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REVIEWS

Ore Textures Volume 4. Broken Rocks—Breccia 1. R.G. TAYLOR. Economic Geology Research Unit, James Cook University, Townsville, Queensland, Australia. 2000. 52 Pp. Price not supplied.

Ore Textures Volume 4 is an A4-sized doubly stapled booklet of 52 pages that is attractively presented, with glossy photographs on the cover and throughout the volume. As in the previous three volumes, the author adopts a very useful observational approach to the study of rocks; in this volume, observed structures of breccias and related interpretation are keyed to high-quality photographs of outcrops or rock slabs. However, lack of attention to editing and layout detracts from the overall impression.

The previous three volumes in this series have covered the textural aspects of infill (vol. 1), alteration (vol. 2) and overprinting (vol. 3). The present volume, Breccia 1, describes and interprets structural features of "break-up" breccias. Numbered sections are as follows: 1. Introduction, 2. Observation of broken rock patterns, 3. Approach to understanding broken rock patterns, 4. Arrangement of plates—design philosophy, 5. Section I [sic]—General patterns of broken rocks and problems involved with recognition, scale perception and overprinting, 6. Section II—Systems/rocks with pronounced shear (brittle-ductile, ductile) components, 7. Section III—Systems/rocks with pronounced brittle components, and 8. Section IV—Textures of related/miscellaneous interest. The author indicates that the next volume will encompass milled breccias. The transfer of emphasis from mineral textures (vols. 1–3) to rock structures (vols. 4–?) means that the series title (Ore Textures) no longer adequately reflects the contents.

Sections 1–4 provide an introduction to the approach and layout of the booklet, but are not coherently presented. Much of section 3 is composed of specific instructions on observational procedures, which would have been better accommodated in section 2. Although the author admits that the volume is not meant to be a textbook, the introduction . . . [Full Text of this Article]

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				REVIEWS Economic Geology, March 1, 2005; 100(2): 401 - 402. [Full Text] [PDF]