Примери за pyroclastic

• The isolated exposures of the accretionary lapilli-bearing facies along the coastline may alternatively record shoreline or water interaction of pyroclastic flows.

• Pyroclastic products are widespread and include lapilli tuff, lithic tuff, agglomerate and pyroclastic breccia; compositionally similar lava flows are massive or blocky.

• The rhyolite has the form of a variably welded and massive, crystal-rich ignimbrite and associated non-welded pyroclastic deposits.

• Nevertheless, the profusion of pyroclastic deposits signifies a major input to the volcanic-sedimentary record derived from subaerial volcanism.

• Papers deal with a range of natural systems, including siliciclastic turbidity cur rents and debris flows, pyroclastic density cur rents and avalanches.

• This memoir is set to become a benchmark publication in physical volcanology and the starting point for future research on pyroclastic density cur rents.

• No pyroclastic lithic components were found in primary deposits.

• This lithofacies is thought to represent deposition from highly turbulent flow deposits with high rates of fallout resulting from pyroclastic flows entering a shallow sea.

• On the western side of the edifice, two lava flows cover the pyroclastic flows and there is no palaeosol between them.

• These mantling relationships argue against an erosional origin for the bedforms by later pyroclastic flows.

• It forms the floor of many barrancos, possibly concealing a considerable underlying pyroclastic sequence.

• Pyroclastic cur rent direction was towards the viewer.

• Precisely what goes on in pyroclastic density cur rents to produce that diversity has been puzzling volcanologists for decades.

• The first chapter defines the aims, gives an overview of relevant recent research and introduces central concepts relating to pyroclastic density cur rents.

• In my opinion, this memoir is essential reading for anyone serious about explosive eruptions, pyroclastic density cur rents and ignimbrites.