Results 11 to 20 of about 60,260 (238)
Sedimentary Mercury Enrichments as a Tracer of Large Igneous Province Volcanism
Geophysical Monograph Series, Page 247-262., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Lawrence M. E. Percival +3 more
wiley +5 more sources
Advances in Civil Engineering, 2021 Many tunnel engineering accidents are generally caused by water softening tuff of high porosity. Experimental and theoretical analytical methods, including rock ultrasonic testing, X-ray diffraction (XRD), microscopic observation, uniaxial compression ...
Zhihao He +5 more
doaj +1 more source
Energies, 2022 This work presents a new protocol for monitoring rising damp, which is applied to three masonry models made of tuff, carparo, and Lecce stone. First, the physical characteristics of each stone were derived in the laboratory, which included porosity ...
Paolo Maria Congedo +4 more
doaj +1 more source
The results of magnetic separation use in ore processing of metalliferous raw basalt of Volyn region [PDF]
, 2016 Purpose. To determine the effectiveness of the electric field use in ore processing for extraction of native copper concentrate from raw basalt, to identify the most technologically advanced grain-size classes of the feed stock.
Gromachenko, S +3 more
core +2 more sources
Undergraduate orthoptic students’ perception of feedback during clinical placement
British and Irish Orthoptic Journal, 2012 Aims: The aim of this study was to explore undergraduate orthoptic students’ perceptions of feedback during clinical placement to allow the identification of common themes which could ultimately inform some guidance for tutors in the provision of ...
Laura C. Tuff
doaj +1 more source
Petroleum Exploration and Development, 2016 Based on analysis of major and trace elements, observation of thin sections, cathodoluminescence and scanning electron microscope of tuff samples, in combination with the restoration of paleotopography in the Malang sag, the formation and distribution ...
Jian MA +7 more
doaj +1 more source
Stratigraphic Overview of Palaeogene Tuffs in the Faroe-Shetland Basin, NE Atlantic Margin [PDF]
, 2017 Acknowledgements We are very grateful to PGS for generously donating seismic datasets. Seismic interpretation was carried out using IHS Kingdom software, and wells were downloaded from the UK Oil & Gas Common Data Access Welllog interpretation was ...
Archer, Stuart +7 more
core +1 more source
Frontiers in Earth Science, 2023 Alongside volcanic eruptions in the middle and late Permian, the sedimentary environment and process changed, and the lithofacies and mineralogical characteristics varied conspicuously from the marine sediments in this period.
Rong Li +9 more
doaj +1 more source
Using mordenite-rich tuff as a natural clay replacement in fired clay brick production [PDF]
Cerâmica, 2023 This work examines the impact of mordenite-rich tuff (MT) on the technological properties of fired clay brick. These specimens were obtained by substituting clay with MT in various proportions (0, 5, 10, 15, 20, 50, and 100 wt%).
G. Djafri +3 more
doaj +1 more source
Geosciences, 2022 Arsenic is a naturally occurring trace element that causes many health effects when present in drinking water. Elevated arsenic concentrations in water are often attributed to nearby felsic volcanic sequences; however, the specific rock units to which ...
Minghua Ren +2 more
doaj +1 more source