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MICROSTRUCTURE AND POZZOLANIC ACTIVITY OF SOME PYROCLASTIC ROCKS FROM SARDINIA (ITALY)
1991Pozzolanic cements have been used for millennia as building materials, but they can also satisfy modern requirements, namely low energy consumption in production and durability. This article describes work which studied, by chemical, physical, petrographical and technological means, the pozzolanic characteristics of four Oligocene-Miocene calcalkaline ...
SISTU, GIOVANNI +3 more
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Recognition and Significance of Pumice in Marine Pyroclastic Rocks
Geological Society of America Bulletin, 1969Pumice is abundant in many ancient sequences of marine pyroclastic rocks and is regarded as important evidence that contemporaneous, or nearly contemporaneous, volcanic activity was the source of at least some of the fragmental debris. The pumice in many such sequences of rocks, however, is easily overlooked, chiefly because most marine pyroclastic ...
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Stratigraphy of Jurassic pyroclastic rocks in the Transantarctic Mountains
Journal of African Earth Sciences, 2000Abstract Jurassic pyroclastic rocks cap the Antarctic Gondwana sequence and document an important event in the evolution of the continent. The Hanson Formation, which crops out in the central Transantarctic Mountains, consists of ca 240 m of silicic tuffs, tuffaceous sandstones, and subordinate quartzose sandstones of probable Early Jurassic age.
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Experimental Evidence of Non-Linear and Creep Behaviour of Pyroclastic Rocks
1994An analysis of the mechanical behaviour of pyroclastic rocks is discussed in this paper, with particular evidence to non-linear and creep behaviour. This topic is treated presenting experimental results obtained on Neapolitan tuffs at the University of Naples.
AVERSA S., EVANGELISTA, ALDO
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Application of X-Ray Microtomography in Pyroclastic Rocks
2019Earth scientists gather geological information from rocks in order to understand the geological processes better. It is compulsory to examine rocks in detail for reliable geological deductions. Petrographical analyses, which inspect the rocks in terms of their physicochemical composition and texture, represent the primary step for accurate geological ...
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