Results 21 to 30 of about 13,576 (317)
GEOCHEMICAL JOURNAL, 1977 A non-destructive gamma-ray spectrometry was applied to a number of volcanic products from Japan. Considerable amounts of 137Cs (∼10-13Ci/g) were determined in some volcanic rocks. The presence of 137Cs does not appear to have any relation to the type, age and spatial distribution of the volcanic rocks.
Kazuo Sato, Nobufusa Saito, Jun Sato
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Geomechanical characterization of volcanic rocks using empirical systems and data mining techniques
Journal of Rock Mechanics and Geotechnical Engineering, 2018 This paper tries to characterize volcanic rocks through the development and application of an empirical geomechanical system. Geotechnical information was collected from the samples from several Atlantic Ocean islands including Madeira, Azores and ...
T. Miranda +4 more
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Method of identifying and characterizing of volcanic traps and its application
Shiyou shiyan dizhi, 2021 Volcanic rocks were widely developed in sedimentary basins in China. The Songliao, Junggar and Sichuan basins have got great research successes and exploration discoveries in igneous reservoirs, which have become one of the important fields for oil and ...
Shuang YANG +3 more
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Jurnal Teknik Hidraulik, 2021 The construction of the Tugu Dam spillway does not escape the problem of slope instability, especially the rock fall type landslide as a result of the rock slope cutting work at STA+80.
Muhammad Iqbal Hamidi +1 more
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Ancient Australian Rocks and the Search for Life on Mars [PDF]
, 2020 We discuss the results of a remote sensing study that has revealed new details about an important rock unit dominated by two minerals that can be associated with volcanism (olivine) and life (carbonate). The study, which used a new analysis technique on CRISM data, identified a region where no carbonates or clays are present, only large grain size ...
arxiv +1 more source
Mercury's crustal thickness correlates with lateral variations in mantle melt production [PDF]
Geophysical Research Letters 47 (2020) e2020GL087261, 2020 Mercury's crust has a complex structure resulting from a billion years of volcanism. The surface variations in chemical composition have been identified from orbit by the spacecraft MESSENGER. Combining these measurements with laboratory experiments on partial melting, we estimate which variations in surface density and degree of mantle melting are ...
arxiv +1 more source
Soil & Environment, 2018 Andisols is a variable charge soil where fertilizations to the soil do not give the same result as that to the soils with permanent charges. Therefore, amelioration is needed to improve the soil chemical properties.
Mahfud Arifin +5 more
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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
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Ecology, Volume 103, Issue 12, December 2022., 2022 Abstract The outcomes of species interactions can vary greatly in time and space with the outcomes of some interactions determined by priority effects. On coral reefs, benthic algae rapidly colonize disturbed substrate. In the absence of top‐down control from herbivorous fishes, these algae can inhibit the recruitment of reef‐building corals, leading ...
Thomas C. Adam +8 more
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E3S Web of Conferences, 2019 The structural lineaments developed in the Kulon Progo Mountains, which is mainly composed of Tertiary volcanic rocks. The direction and distribution of these lineaments density differs from one area to another.
Widagdo Asmoro +2 more
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