‘Unique’ particles in soil evidence
Soil is presented as evidence as a mixture of both natural and artificial materials. ‘Unique’ particles found in soil may provide useful information to indicate the origin of the soil and, when found in soil evidence, may provide rapid discrimination between samples. Evidence in poor condition may also be examined for these diagnostic particles. This paper describes some case examples and research, involving geological particles, plant fragments and algae, in which microscopy played an important role.
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Forensic Geoscience: Principles, Techniques and Applications
Forensic geoscience is an increasingly important sub-discipline within geoscience and forensic science. Although minerals, soils, dusts and rock fragments have been used as only begun to be recognized in the last ten years or so. The police and other investigative bodies are keen to encourage such developments in the fight against crime, particularly since many criminals show a high level of forensic awareness with regard to evidence such as fingerprints, blood and other body fluids. The papers in this volume illustrate some of the main principles, techniques and applications in current forensic geoscience, covering research and casework in the UK and internationally. The techniques described range from macro-scale field geophysical investigations to micro-scale laboratory studies of the chemical and textural properties of individual particles. In addition to forensic applications, many of these techniques have broad utility in geological, geomorphological, soil science and archaeological research.