Abstract
the Neapolitan Yellow Tuff (NYT) (12 ka BP) is considered to be the product of a single eruption. Two different members (A and B) have been identified and can be correlated around the whole of Campi Flegrei. Member A is made up of at least 6 fall units including both ash and lapilli horizons. The basal stratified ash unit (A1) is interpreted to be a phreatoplinian fall deposit, since it shows a widespread dispersal (>1000 km2) and a constant thickness over considerable topography. The absence of many lapilli fall units in proximal and medial areas testifies to the erosive power of the intervening pyroclastic surges. The overlying member B was formed by many pyroclastic flows, radially distributed around Campi Flegrei, that varied widely in their eruptive and emplacement mechanisms. In some of the most proximal exposures coarse scoria and lithic-rich deposits, sometimes welded, have been identified at the base of member B. Isopach and isopleth maps of fall-units, combined with the distribution of the coarse proximal facies, indicate that the eruptive vent was located in the NE area of Campi Flegrei. It is considered that the NYT eruption produced collapse of a caldera approximately 10 km diameter within Campi Flegrei. The caldera rim, located by geological and borehole evidence, is now largely buried by the products of more recent eruptions. Initiation of caldera collapse may have been contemporaneous with the start of the second phase (member B). It is suggested that there was a single vent throughout the eruption rather than the development of multiple or ring vents. Chemical data indicate that different levels of a zoned trachyte-phonolite magma chamber were tapped during the eruption. The minimum volume of the NYT is calculated to be about 50 km3 (DRE), of which 35 km3 (∼70%) occurs within the caldera.
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References
Alessio M, Bella F, Improta S, Belluomini G, Cortesi C, Turi B (1971) University of Rome Carbon-14 Dates IX Radiocarbon 13(2):395–411
Alessio M, Bella F, Improta S, Belluomini G, Cortesi C, Turi B (1973) University of Rome Carbon-14 Dates X Radiocarbon 15(1):165–178
Alessio M, Bella F, Improta S, Belluomini G, Cortesi C, Turi B (1974) University of Rome Carbon-14 Dates XII Radiocarbon 16(3):358–367
Allen T (1981) Particle size measuremernt. Chapman and Hall, pp 1–678
Balley RA, Dalrymple GE, Lanphere MA (1976) Volcanism, structure and geochronology of Long Valley Caldera, Mono County, California. J Geophys Res 81:725–744
Barberi F, Innocenti F, Lirer L, Munno R, Pescatore T, Santacroce R (1978) The Campanian Ignimbrite: a major prehistoric eruption in the neapolitan area (Italy). Bull Volcanol 41:1–22
Barberi F, Cassano E, La Torre P, Sbrana A (1991) Structural evolution of Campi Flegrei in light of volcanological and geophysical data. J Volcanol Geotherm Res 48:33–50
Branney MJ (1991) Eruption and depositional facies of the Whorneyside Tuff Formation, English Lake District: An exceptionally large-magnitude phreatoplinian eruption. Geol Soc Am Bull 103:886–897
Capaldi G, Civetta L, Di Girolamo P, Lanzara R, Orsi G, Scarpati C (1987) Volcancological and geochemical constraints on the genesis of Yellow-Tuffs in the Neapolitan-Phlegrean area. Rend Acc Sc Fis Mat Special issue: 25–40
Cas RAF, Wright JV (1987) Volcanic succession: modern and ancient. Allen and Unwin, London, pp 1–529
Cassignol C, Gillot PY (1982) Range and effectiveness of unspiked potassium-argon dating: experimental groundwork and application. Numerical dating in stratigraphy GS Odin, J Will and Sons ed, New York, 160–179
Cole PD, Scarpati C (1993) A facies interpretation of the eruption and emplacement mechanisms of the upper part of the Neapolitan Yellow Tuff, Campi Flegrei southern Italy. Bull Volcanol (in press)
de'Gennaro M, Petrosino P, Conte MT, Munno R, Colella C (1990) Zeolite chemistry and distribution in a Neapolitan yellow tuff deposit. Eur J Mineral 2:779–786
D'Erasmo G (1931) Studio geologico dei pozzi profondi della Campania. Boll Soc Nat 43:15–130
Di Girolamo P (1968) Piroclastiti stratificate riferibili al II periodo flegreo nella pianura campana tra il Volturno e Napoli. Per Mineral 37:341–371
Di Girolamo P, Ghiara MR, Lirer L, Munno R, Rolandi G, Stanzione D (1984) Vulcanologia e petrologia dei Campi Flegrei. Boll Soc Geol Ital 103:349–413
Dzulynski S, Kotlarczyk J (1962) On load-casted ripples. Annales Soc Géol Pologne 32:148–159
Fisher RV, Schmincke H-U (1984) Pyroclastic rocks. Springer-Verlag, Berlin, pp 1–472
Frezzotti M, Giraudi C (1989) La conca di Aremogna. Guida all'escursione. 59–65
Gardner JE, Sigurdsson H, Carey SN (1991) Eruption dynamics and magma withdrawal during the plinian phase of the Bishop Tuff eruption. J Geophys Res 96 (B5):8097–8112
Gottardi G (1989) The genesis of zeolites. Eur J Mineral 1:479–487
Hay RL (1978) Geologic occurrences of zeolites. In: Sand LB & Mumpton FA (eds), natural zeolites occurrence, properties, use. Pergamon Press, Oxford, 135–144
Hay RL (1986) Geologic occurrence of zeolites and some associated minerals. Pure Appl Chem 58:1339–1342
Heiken G (1972) Morphology and petrography of volcanic ashes. Geol Soc Am Bull 83:1961–1988
Heiken G (1974) An atlas of volcanic ash. Smith Contr Earth Sci 12:1–101
Heiken G, Wohletz KH (1985) Volcanic ash. Univ Calif Press pp 1–246
Inman DL (1952) Measures for describing the size distribution of sediments. J Sed Petrol 22:125–145
Le Bas MJ, Le Maitre RW, Streckeisen A, Zanettin B (1986) A chemical classification of volcanic rocks based on the total Al-kali-Silica diagram. J Petrol 27(3):745–750
Lirer L, Munno R (1975) Il tufo giallo napoletano (Campi Flegrei). Per Mineral 44:103–118
Lirer L, Luongo G, Scandone R (1987) On the volcanological evolution of Campi Flegrei. EOS 68(16):226–233
Lipman PW (1976) Caldera-collapse breccias in the western San Juan Mountains, Colorado. Geol Soc Am Bull 87:1397–1410
McPhie J (1988) Primary and redeposited facies from a large-magnitude, rhyolitic, phreatomagmatic eruption: Cana Creek Tuff, Late Carboniferus, Australia. J Volcanol Geotherm Res 28 (3/4):319–350
Minucci L (1964) Rotary drilling for geothermal energy. Conference New Sources Energy 234–244
Norin E (1955) The mineral composition of the Neapolitan Yellow Tuff. Geol Rund 43:526–534
Orsi G, Scarpati C (1989) Stratigrafia e dinamica eruttiva del Tufo Giallo Napoletano, Bol GNV 2:917–930
Orsi G, Civetta L, Aprile A, D'Antonio M, De Vita S, Gallo G, Piochi M (1991) The Neapolitan Yellow Tuff: dynamics, emplacement mechanism and magma evolution of a phreatoplinian-to-plinian eruption. CEV fieldguide 76–115
Parascandola A (1936) I vulcani occidentali di Napoli. Boll Soc Nat 48:39–58
Paterne M, Guichard F, Labeyrie J, Gillot PY, Duplessy JC (1986) Tyrrhenian Sea tephrochronology of the oxigen isotope record for the past 60 000 years. Mar Geol 72:259–285
Paterne M, Guichard F, Labeyrie J (1988) Explosive activity of the South Italian volcanoes during the past 80 000 years as determined by marine tephrochronology. J Volcanol Geotherm Res 34:153–172
Potter PE, Pettijohn FJ (1963) Paleocurrents and basin analysis. Springer-Verlag, Berlin, pp 1–296
Pyle DM (1989) The thickness, volume and grainsize of tephra fall deposits. Bull Volcanol 51:1–15
Rittmann A, Vighi L, Falini F, Ventriglia V, Nicotera P (1950) Rilevamento geologico dei Campi Flegrei. Boll Soc Geol It 69:117–362
Rosi M, Sbrana A (Editors) (1987) The Phlegrean Fields. CNR Quad Ric Sci 114(9):1–175
Rosi M, Sbrana A, Principe C (1983) The Phlegrean Fields structural evolution, volcanic history and eruptive mechanisms. J Volcanol Geotherm Res 17:273–288
Scandone R, Bellucci F, Lirer L, Rolandi G (1991) The structure of the Campanian Plain and the activity of the Neapolitan volcanoes (Italy). J Volcanol Geotherm Res 48(1/2):1–31
Scarpati C (1990) Stratigrafia, geochimica e dinamica eruttiva del Tufo Giallo Napoletano. Ph D Thesis, University of Naples, pp 1–159
Scherillo A (1955) Petrografia chimica dei tufi flegrei 2 tufo giallo, mappamonte, pozzolana. Rend Acc Sc Fis Mat 22:317–330
Scherillo A, Franco E (1967) Introduzione alla carta stratigrafica del suolo di Napoli. Atti Acc Pont Napoli, 16:27–37
Self S (1983) Large-scale phreatomagmatic silicic volcanism: a case study from New Zealand. J Volcanol Geotherm Res 17:433–469
Self S, Sparks RSJ (1978) Characteristics of wide-spread pyroclastic deposits formed by interaction of silicic magma and water. Bull Volcanol 41:196–211
Sparks RSJ, Wilson L, Sigurdsson H (1981) The pyroclastic deposits of the 1875 eruption of Askja, Iceland. Phil Trans R Soc London 299:241–273
Walker GPL (1971) Grain-size characteristics of pyroclastic deposits. J Geol 79:696–714
Walker GPL (1973) Explosive volcanic eruptions — a new classification scheme. Geol Rund 62:431–446
Walker GPL (1981) Characteristics of two phreatoplinian ashes, and their water flushed origin. J Volcanol Geotherm Res 9:395–407
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Scarpati, C., Cole, P. & Perrotta, A. The Neapolitan Yellow Tuff — A large volume multiphase eruption from Campi Flegrei, Southern Italy. Bull Volcanol 55, 343–356 (1993). https://doi.org/10.1007/BF00301145
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DOI: https://doi.org/10.1007/BF00301145