title: Heat production rate from radioactive elements in igneous and metamorphic rocks in Eastern Desert, Egypt.
abstract: Radioactive heat-production data of Igneous and Metamorphic outcrops in the Eastern Desert are presented. Samples were analysed using a low level gamma-ray spectrometer (HPGe) in the laboratory. A total of 205 rock samples were investigated, covering all major rock types of the area. The heat-production rate of igneous rocks ranges from 0.11 (basalt) to 9.53 microWm(-3) (granite). In metamorphic rocks it varies from 0.28 (serpentinite ) to 0.91 microWm(-3) (metagabbro). The contribution due to U is about 51%, as that from Th is 31% and 18% from K. The corresponding values in igneous rocks are 76%, 19% and 5%, respectively. The calculated values showed good agreement with global values except in some areas containing granites.
authors.affiliation: Physics department, Faculty of science, South Valley University, Qena, Egypt. abbady@mailcity.com
authors.forename: Adel G E
authors.initials: AG
authors.lastname: Abbady
authors.forename: A M
authors.initials: AM
authors.lastname: El-Arabi
authors.forename: A
authors.initials: A
authors.lastname: Abbady