The Longcroft Tuffs, a poorly exposed succession at least 140 m thick, are dominated by lapilli tuffs of andesitic composition. |
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Some matrix ash samples were also analysed to ensure that the complete geochemical range could be assessed, and where lapilli were not available. |
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Mount Vesuvius' eruption buried the ancient Roman city of Pompeii in volcanic ash and lapilli, preserving it in its current ghost-town-like state. |
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Projections are defined according to their size: higher than 64 mm for the blocks, of 2mm to 64 mm for the lapilli, and less than 2 mm for ashes. |
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We infer that the framework through which transport took place consists of lapilli lodged within elutriation networks similar to those observed in the field. |
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Humid grass and a carpet of lapilli alternate along the path. |
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The hole anchored in bedrock at 10.6 meters and traversed mafic volcanics to the end of the hole at 365.0 meters. From 10.6 meters to 50.3 meters, the hole cut a gabbro and lapilli tuf horizon. |
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This tuff, lapilli tuff and breccia outcrops a little to the west of the summit. |
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This local marker unit conformably overlies an andesitic lapilli tuff and the Little Stand Tuff, a nodular rhyolitic ignimbrite. |
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Mafic rocks include massive to very amygdaloidal, locally porphyritic, fine-grained maroon or dark greenish grey basalt, and extensive belts of ash and lapilli tuff. |
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About three-fifths of the more than 100 acres that made up the city has been liberated from the solidified volcanic ash and lapilli that engulfed it on that awful day. |
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Etna was one of the places where the Greeks assumed that Vulcan had his forge, an adequate description of the large amount of lapilli and smoke emitted from the main crater. |
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Vesuvius has regularly showered the area with ash, minerals and lapilli, which have enriched the soil with nutrients and created a natural and efficient drainage system. |
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The sound of the lapilli under our shoes gives rythm to our walk. |
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Four suites of mafic rocks are present, namely picritic lapilli tuff, basaltic to andesitic lapilli tuff, low-Cr basalt, and andesitic basalt. |
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Plagioclase is commonly the only feldspar phyric phase in the felsic to intermediate volcanic clasts, including lapilli and vitric tuff and probable ash-flow tuff. |
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Tephra is volcanic ash, lapilli, volcanic bombs or volcanic blocks. |
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Play the strategy game of Latrunculi or go for something a little easier, such as Terni Lapilli. |
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