FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2016349619> ?p ?o ?g. }

• W2016349619 endingPage "252" @default.
• W2016349619 startingPage "221" @default.
• W2016349619 abstract "The Cerro Panizos ignimbrite center, in the central Andes Mountains, produced two ignimbrite sheets and many lava flows. The ignimbrite of Quebrada Cienago was erupted at 7.9 Ma, and effusive eruptions continued until the two cooling units of the crystal-rich dacitic Cerro Panizos Ignimbrite were emplaced at 6.7 Ma. The lower unit has no laterally continuous flow breaks and was erupted from a single vent or small cluster of vents with limited fluctuation in discharge. Lithic fragments reach significant concentrations (>5%) only in the uppermost two meters of this cooling unit, where they document vent-wall collapse or the opening of a new vent. The upper cooling unit contains many flow units with variations in welding, thicknesses, and lithic fragment concentrations, implying an unsteady eruption column, the opening of many vents, and probable caldera collapse. Triangulation of anisotropy of magnetic susceptibility flow-direction measurements locate a single vent for the lower cooling unit, whereas the upper cooling unit had many vents within the present dome cluster. A 15-km diameter topographic depression, marked by inward dips of 4–8 at the cooling unit contact, is centered on the vent area of the lower cooling unit. The depression is interpreted as a downsag caldera formed during emplacement of the lower cooling unit. Collapse began late in the eruption of the lower cooling unit and continued through the emplacement of the upper cooling unit. Resurgent magmatism occurred as lava flows that mundated the caldera area. A ring of dacite domes, erupted until at least 6.1 Ma, in the northern half of the downsag caldera traces the margin of a collapse caldera associated with the upper cooling unit. Maximum caldera subsidence (353 km3) is not enough to account for the erupted volume (652 km3 DRE minimum). The ash-poor, crystal-rich nature (up to 50% crystals in the pumice. 75% in the matrix) of the Cerro Panizos pyroclastic flows resulted in poor retention of gases, and there is little evidence of fluidization. The high crystal content, however, favored modified grain-flow processes, in which several particle support mechanisms combine with grain-dispersive forces. It is postulated that the flows were initially partially fluidized, but rapidly lost their gases and grain-flow processes grew in relative importance. Grain-flow processes destroyed evidence of fluidization before deposition." @default.
• W2016349619 created "2016-06-24" @default.
• W2016349619 creator A5072788113 @default.
• W2016349619 date "1993-06-01" @default.
• W2016349619 modified "2023-09-24" @default.
• W2016349619 title "Eruptive processes and caldera formation in a nested downsagcollapse caldera: Cerro Panizos, central Andes Mountains" @default.
• W2016349619 cites W1966677118 @default.
• W2016349619 cites W1967304906 @default.
• W2016349619 cites W1971057158 @default.
• W2016349619 cites W1971925134 @default.
• W2016349619 cites W1972088465 @default.
• W2016349619 cites W1974412895 @default.
• W2016349619 cites W1975718555 @default.
• W2016349619 cites W1979397668 @default.
• W2016349619 cites W1982925996 @default.
• W2016349619 cites W1984517521 @default.
• W2016349619 cites W1992549768 @default.
• W2016349619 cites W1993517014 @default.
• W2016349619 cites W1994210827 @default.
• W2016349619 cites W1999832404 @default.
• W2016349619 cites W2001754765 @default.
• W2016349619 cites W2002071675 @default.
• W2016349619 cites W2009711555 @default.
• W2016349619 cites W2011971603 @default.
• W2016349619 cites W2017620411 @default.
• W2016349619 cites W2018743105 @default.
• W2016349619 cites W2020694248 @default.
• W2016349619 cites W2021660018 @default.
• W2016349619 cites W2025232556 @default.
• W2016349619 cites W2027348709 @default.
• W2016349619 cites W2029638214 @default.
• W2016349619 cites W2037545075 @default.
• W2016349619 cites W2043018555 @default.
• W2016349619 cites W2045597907 @default.
• W2016349619 cites W2056340662 @default.
• W2016349619 cites W2059567231 @default.
• W2016349619 cites W2061050646 @default.
• W2016349619 cites W2061574270 @default.
• W2016349619 cites W2063780264 @default.
• W2016349619 cites W2066699442 @default.
• W2016349619 cites W2077605753 @default.
• W2016349619 cites W2078204357 @default.
• W2016349619 cites W2078525811 @default.
• W2016349619 cites W2079386339 @default.
• W2016349619 cites W2079765394 @default.
• W2016349619 cites W2079912278 @default.
• W2016349619 cites W2080123481 @default.
• W2016349619 cites W2083926574 @default.
• W2016349619 cites W2085753910 @default.
• W2016349619 cites W2092234002 @default.
• W2016349619 cites W2095409619 @default.
• W2016349619 cites W2101333793 @default.
• W2016349619 cites W2102017033 @default.
• W2016349619 cites W2103106983 @default.
• W2016349619 cites W2104144529 @default.
• W2016349619 cites W2104620793 @default.
• W2016349619 cites W2105071102 @default.
• W2016349619 cites W2119980685 @default.
• W2016349619 cites W2125102668 @default.
• W2016349619 cites W2129401683 @default.
• W2016349619 cites W2130436986 @default.
• W2016349619 cites W2131516632 @default.
• W2016349619 cites W2135251990 @default.
• W2016349619 cites W2160672347 @default.
• W2016349619 cites W2165466563 @default.
• W2016349619 cites W2166012260 @default.
• W2016349619 cites W2168368152 @default.
• W2016349619 cites W2343232782 @default.
• W2016349619 doi "https://doi.org/10.1016/0377-0273(93)90018-m" @default.
• W2016349619 hasPublicationYear "1993" @default.
• W2016349619 type Work @default.
• W2016349619 sameAs 2016349619 @default.
• W2016349619 citedByCount "79" @default.
• W2016349619 countsByYear W20163496192012 @default.
• W2016349619 countsByYear W20163496192013 @default.
• W2016349619 countsByYear W20163496192014 @default.
• W2016349619 countsByYear W20163496192015 @default.
• W2016349619 countsByYear W20163496192016 @default.
• W2016349619 countsByYear W20163496192017 @default.
• W2016349619 countsByYear W20163496192019 @default.
• W2016349619 countsByYear W20163496192020 @default.
• W2016349619 countsByYear W20163496192021 @default.
• W2016349619 countsByYear W20163496192022 @default.
• W2016349619 countsByYear W20163496192023 @default.
• W2016349619 crossrefType "journal-article" @default.
• W2016349619 hasAuthorship W2016349619A5072788113 @default.
• W2016349619 hasConcept C109007969 @default.
• W2016349619 hasConcept C113754120 @default.
• W2016349619 hasConcept C114793014 @default.
• W2016349619 hasConcept C120806208 @default.
• W2016349619 hasConcept C127313418 @default.
• W2016349619 hasConcept C146348940 @default.
• W2016349619 hasConcept C165205528 @default.
• W2016349619 hasConcept C17409809 @default.
• W2016349619 hasConcept C183222429 @default.
• W2016349619 hasConcept C24343810 @default.
• W2016349619 hasConcept C48258643 @default.
• W2016349619 hasConcept C49708893 @default.

• next