Petrography

TL;DR: In this paper, a detailed petrographic and chemical investigation of impact melt rock and country rock samples is presented, which shows no statistically significant variation or trend in chemical composition with depth or geographic location.

TL;DR: In this paper, the authors conducted petrographic and whole-rock chemical analyses of the Neoproterozoic Nchanga granite, Lusaka Granite, Ngoma Gneiss and felsic metavolcanic rocks from the Lufilian-Zambezi belt in Zambian, in order to evaluate their chemical characteristics and tectonic settings.

TL;DR: In this article, the authors show that the petrographic characteristics of clastic rock have an intrinsic influence on its strength and failure duration, and that with an increase of the detritus content (or quartz), the uniaxial compressive strength increases according to a logarithmic expression.

TL;DR: In this article, a detailed study of the opaque mineralogy by reflected light petrography, electron microprobe analysis and SEM observations, as well as alternating field and thermal demagnetization experiments confirm that multi-domain, very pure magnetite is the dominant ferromagnetic phase which, along with ferrosilicates, contribute to the magnetic susceptibility.

TL;DR: In this paper, several physico-mechanical properties are measured on three types of Alvand granitoid rocks across five weathering grades ranging from fresh to completely weathered rocks.