Original paper

Dual energy gamma-ray axial computer tomography investigation of some metamorphic and sedimentary rocks

Duliu, Octavian G.; Rizescu, Constantin T.; Ricman, Cãlin

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen Band 228 Heft 3 (2003), p. 343 - 362

27 references

published: Jun 30, 2003

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ArtNo. ESP155022803003, Price: 29.00 €

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Abstract

Four specimens of metamorphic and sedimentary rocks were investigated using 192Ir dual energy gamma-ray computer tomography. Using this methodology, tomographs depicting density as well as effective atomic number distribution with a 0.3 mm resolution were obtained. Various details were evidenced including the granular structure of augen gneiss, the well-developed foliation pattern of mica rich gneiss, the banded configuration of nummulitic limestone or the concentric disposition of calcite microcrystals in a speleothem. In addition, the corresponding image histograms rendered an identification of both major and minor components of investigated rocks possible.

Keywords

metamorphictomographysedimentary rocksaugen gneissmicrocrystals