Abstract
Volcanic rocks of the Latir volcanic field evolved in an open system by crystal fractionation, magma mixing, and crustal assimilation. Early high-SiO2 rhyolites (28.5 Ma) fractionated from intermediate compositionmagmas that did not reach the surface. Most precaldera lavas have intermediate-compositions, from olivine basaltic-andesite (53% SiO2) to quartz latite (67% SiO2). The precaldera intermediate-composition lavas have anomalously high Ni and MgO contents and reversely zoned hornblende and augite phenocrysts, indicating mixing between primitive basalts and fractionated magmas. Isotopic data indicate that all of the intermediate-composition rocks studied contain large crustal components, although xenocrysts are found only in one unit. Inception of alkaline magmatism (alkalic dacite to high-SiO2 peralkaline rhyolite) correlates with, initiation of regional extension approximately 26 Ma ago. The Questa caldera formed 26.5 Ma ago upon eruption of the >500 km3 high-SiO2 peralkaline Amalia Tuff. Phenocryst compositions preserved in the cogenetic peralkaline granite suggest that the Amalia Tuff magma initially formed from a trace element-enriched, high-alkali metaluminous magma; isotopic data suggest that the parental magmas contain a large crustal component. Degassing of water- and halogen-rich alkali basalts may have provided sufficient volatile transport of alkalis and other elements into the overlying silicic magma chamber to drive the Amalia Tuff magma to peralkaline compositions. Trace element variations within the Amalia Tuff itself may be explained solely by 75% crystal fractionation of the observed phenocrysts. Crystal settling, however, is inconsistent with mineralogical variations in the tuff, and crystallization is thought to have occurred at a level below that tapped by the eruption. Spatially associated Miocene (15-11 Ma) lavas did not assimilate large amounts of crust or mix with primitive basaltic magmas. Both mixing and crustal assimilation processes appear to require development of relatively large magma chambers in the crust that are sustained by large basalt fluxes from the mantle. The lack of extensive crustal contamination and mixing in the Miocene lavas may be related to a decreased basalt flux or initiation of blockfaulting that prevented pooling of basaltic magma in the crust.
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References
Arth JG (1976) Behavior of trace elements during magmatic processes — a summary of theoretical models and their applications. J Res US Geol Surv 4:41–47
Arth JG, Barker F (1976) Rare-earth partitioning between hornblende and dacitic liquid and implications for the genesis of trondhjemitic-tonalitic magmas. Geology 4:534–536
Bacon CR (1986) Magmatic inclusions in silicic and intermediate volcanic rocks. J Geophys Res 91:6091–6112
Bacon CR, Metz J (1984) Magmatic inclusions in rhyolites contaminated by basalts and compositional zonation beneath the Coso volcanic field California. Contrib Mineral Petrol 85:346–365
Bailey DK (1974a) Experimental petrology relating to oversaturated peralkaline volcanics: a review. Bull Volcanol 38:637–652
Bailey DK (1974b) Origin of alkaline magmas as a result of anatexis-melting in the deep crust. In: Sorensen H (ed) The alkaline rocks. John Wiley and Sons, London, pp 436–441
Bailey DK (1980) Volcanism, Earth degassing and replenished lithospheric mantle. Phil Trans Roy Soc Lond A297:309–322
Bailey DK, Macdonald R (1975) Fluorine and chlorine in peralkaline liquids and the need for magma generation in an open system. Miner Mag 40:405–414
Baker BH (1987) Outline of the petrology of the Kenya rift alkaline province. In: Fitton JG, Upton BG (eds) Alkaline igneous rocks, The Geological Society, Blackwell, Oxford, pp 293–312
Baker BH, McBirney AR (1985) Liquid fractionation. Part III: geochemistry of zoned magmas and the compositional effects of liquid fractionation. J Volcanol Geotherm Res 24:55–81
Barker DS (1976) Phase relations in the system NaAlSiO4-SiO2-NaCl-H2O at 400°–800° C and 1 kilobar, and petrologic implications. Jour Geol 84:97–106
Brown WL, Parsons I (1981) Towards a more practical two-feldspar geothermometer. Contrib Mineral Petrol 76:369–377
Butler AP Jr (1971) Tertiary volcanic stratigraphy of the eastern Tusas Mountains, southwest of the San Luis Valley, Colorado New Mexico, New Mexico Geol Soc Guidebk 22:289–300
Clark KF, Read CB (1972) Geology and ore deposits of the Eagle Nest area, New Mexico. New Mexico Bur Mines Miner Res Bull 94, 152 pp
Collins WJ, Beans SD, White AJR, Chappell BW (1982) Nature and origin of A-type granites with particular reference to southeastern Australia. Contrib Mineral Petrol 80:189–200
Czamanske GK, Shunso I, Atkin SA (1981) Chemistry of rockforming minerals of the Cretaceous-Paleocene batholith in southwestern Japan and implications for magma genesis. J Geophys Res 86:10431–10469
Czamanske GK, Dillet B (1988) Alkali amphibole, tetrasilicic mica, and sodic pyroxene in peralkaline siliceous rocks, Questa caldera, New Mexico. Amer J Sci (in press)
DePaolo DJ (1981) Trace-element and isotopic effects of combined wall rock assimilation and fractional crystallization. Earth Planet Sci Lett 53:189–202
DePaolo DJ, Johnson RW (1979) Magma genesis in the new Britain island-arc: constraints from Nd and Sr isotopes and trace-element patterns. Contrib Mineral Petrol 70:367–379
Dillet B, Czamanske GK (1987) Aspects of the petrology, mineralogy, and geochemistry of the granitic rocks associated with Questa caldera, northern New Mexico. US Geol Surv Open File Report 87-258 228 pp
Downes H (1984) Sr and Nd isotope geochemistry of coexisting alkaline magma series, Cantal, Massif Central, France. Earth Planet Sci Lett 69:321–334
Dungan MA, Lindstrom MM, McMillan NJ, Moorbath S, Hoefs J, Haskin LA (1986) Open system magmatic evolution of the Taos Plateau volcanic field, northern New Mexico — I: the petrology and geochemistry of the Servilleta Basalts. J Geophys Res 91:5999–6028
Eichelberger JC (1978) Andesitic volcanism and crustal evolution. Nature 275:21–27
Fitton JG (1987) The Cameroon line, West Africa: a comparison between oceanic and continental alkaline volcanism. In: Fitton JG, Upton BGJ (eds) Alkaline Igneous Rocks, The Geological Society, Blackwell, Oxford, pp 273–292
Gilbert MC, Helz RT, Poop RK, Spear FS (1982) Experimental studies of amphibole stability. In: Veblen DR, Ribbe PH (eds) Reviews in mineralogy 9 B: Amphiboles: petrology and experimental phase relations, Mineral Soc Amer, pp 229–354
Grove TL, Baker MB (1984) Phase equilibrium controls on the tholeiitic verses calc-alkaline differentiation trends. J Geophys Res 89:3253–3274
Hagstrum JT, Lipman PW (1986) Paleomagnetism of the structurally deformed Latir volcanic field, northern New Mexico: relations to formation of the Questa caldera and development of the Rio Grande rift. J Geophys Res 91:7383–7402
Hards N (1976) Distribution of elements between the fluid phase and silicate melt phase of granites and nepheline syenites. NERC Pub Serie D, pp 88–90
Harris C (1983) The petrology of lavas and associated plutonic inclusions of Ascension Island. J Petrol 24:424–470
Harrison TM, Watson EB (1983) Kinetics of zircon dissolution and zirconium diffusion in granitic melts of variable water content. Contrib Mineral Petrol 84:66–72
Haskin LA, Haskin MA, Frey FA, Wildeman (1968) Relative and absolute terrestrial abundances of the rare earths. In: Ahrens LH (ed) Origin and distribution of the elements, Pergamon, Oxford, pp 889–912
Helz RT (1973) Phase relations of basalts in their melting range at PH2O=5 Kb as a function of oxygen fugacity. Part I. Mafic phases. J Petrol 14:249–302
Helz RT (1976) Phase relations of basalts in their melting range at PH20=5 Kb. Part II. Melt compositions. J Petrol 17:139–193
Henderson P (1982) Inorganic geochemistry. Pergamon, Oxford, 353 pp
Hildreth W (1979) The Bishop Tuff: evidence for the origin of compositional zonation in silicic magma chambers. Geol Soc Amer Spec Pap 180:43–75
Hildreth W (1981) Gradients in silicic magma chambers: implications for lithospheric magmatism. J Geophys Res 86:10153–10192
Huppert HE, Sparks RSJ, Whitehead JA, Hallworth MA (1986) Replenishment of magma chambers by light inputs. J Geophys Res 91:6113–6112
Johnson CM, O'Neil JR (1984) Triple junction magmatism: a geochemical study of Neogene volcanic rocks in western California. Earth Planet Sci Lett 71:241–262
Kelley SA, Duncan IJ (1986) Late Cretaceous to middle Tertiary tectonic history of the northern Rio Grande rift. J Geophys Res 91:6246–6262
Kogarko LN (1974) Role of volatiles. In: Sorensen H (ed) The alkaline rocks, John Wiley and Sons, London, pp 474–487
Koyaguchi T (1986a) Evidence for two-stage mixing in magmatic inclusions and rhyolitic lave domes on Niijima Island, Japan. J Volcanol Geotherm Res 29:71–98
Koyaguchi T (1986b) Textural and compositional evidence for magma mixing and its mechanism, Abu volcano group, south-western Japan. Contrib Mineral Petrol 93: 33–45
Leat PT, Macdonald R, Smith RL (1984) Geochemical evolution of the Menengai caldera volcano, Kenya. J Geophys Res 89:8571–8592
Lindsley DH (1983) Pyroxene geothermometry. Amer Mineral 68:477–493
Lipman PW (1983) The Miocene Questa caldera, northern New Mexico: relation to batholith emplacement and associated molybdenum mineralization. In: The genesis of Rocky Mountain ore deposits: changes with time and tectonics, Proc Denver Region Explor Geol Soc Symp, pp 133–147
Lipman PW (1988) Evolution of silicic magma in the upper crust: the mid-Tertiary Latir volcanic field and its cogenetic granitic batholith, northern New Mexico, USA. In: The origin of granites. Trans Royal Soc Edinburg (in press)
Lipman PW, Mehnert HH (1975) Late Cenozoic basaltic volcanism and development of the Rio Grande depression in the southern Rocky Mountains. In: Curtis BF (ed) Geologic history of the southern Rocky Mountains. Geol Soc Amer Mem 144:119–154
Lipman PW, Reed JC Jr (1988) Geologic map of the Latir volcanic field and adjacent areas, northern New Mexico. US Geol Survey Misc Invest Map I-1907 (in press)
Lipman PW, Mehnert HH, Naeser CW (1986) Evolution of the Latir volcanic field, northern New Mexico and its relation to the Rio Grande rift, as indicated by K-Ar and fission-track dating. J Geophys Res 91:6329–6346
Lipman PW, Doe BR, Hedge CE, Steven TA (1978) Petrologic evolution of the San Juan volcanic field, southwestern Colorado: Pb and Sr isotope evidence. Geol Soc Amer Bull 89:59–82
Luhr JF, Carmichael ISE (1980) The Colima volcanic complex, Mexico: I. Post-caldera andesites from Volcan Colima. Contrib Mineral Petrol 71:343–372
Luhr JF, Carmichael ISE, Varekamp JC (1984) The 1982 eruptions of El Chichon volcano, Chiapas, Mexico: mineralogy and petrology of the anhydrite-bearing pumices. J Volcanol Geotherm Res 23:69–108
Macdonald R (1974a) The role of fractional crystallization in the formation of the alkaline rocks. In: Sorensen H (ed) The Alkaline Rocks, John Wiley and Sons, London, pp 442–458
Macdonald R (1974b) Tectonic settings and magma associations. Bull Volcan 38:575–593
Macdonald R, Bailey DK (1973) The chemistry of the peralkaline oversaturated obsidians. US Geol Surv Prof Pap 440-N-1:1–37
Macdonald R, Bailey DK, Barberi F (1974) Recommendations for further studies on the peralkaline oversaturated volcanic rocks. Bull Volcan 38:828–836
Mahood GA (1981) Chemical evolution of a Pleistocene rhyolite center; Sierra La Primavera, Jalisco, Mexico. Contrib Mineral Petrol 77:129–149
Mahood G, Hildreth W (1983) Large partition coefficients for trace elements in high-silica rhyolites. Geochim Cosmochim Acta 47:11–30
Manley K (1981) Redefinition and description of the Los Pinos Formation of northcentral New Mexico. Geol Soc Amer Bull 92:984–989
Martin RF (1974) Role of water in pantellerite genesis. Bull Volcanol 38:666–679
Masuda AW, Nakamura H, Tanaka T (1973) Fine structure of mutually normalized rare-earth patterns of chondrites. Geochim Cosmochim Acta 37:239–248
McKinlay PF (1956) Geology of Costilla and Latir Peak quadrangles, Taos County, New Mexico. NM Bur Mines Min Res Bull 42, 32 pp
McKinlay PF (1957) Geology of the Questa quadrangle, Taos County, New Mexico. NM Bur Mines Min Res Bull 53, 23 pp
McMillan NJ, Dungan MA (1986) Magma mixing as a petrogenetic process in the development of the Taos Plateau volcanic field, New Mexico. J Geophys Res 91:6029–6045
Miyashiro A (1974) Volcanic rock series in island arcs and active continental margins. Am J Sci 274:321–355
Nagasawa H, Schnetzler CC (1971) Partitioning of rare earth, alkali and alkaline earth elements between phenocrysts and acidic igneous magma. Geochim Cosmochim Acta 35:953–968
Nash WP, Crecraft HR (1985) Partition coefficients for trace elements in silicic magmas. Geochim Cosmochim Acta 49:2309–2322
Nielson RL (1985) EQUIL: a program for the modeling of low-pressure differentiation processes in natural mafic magma bodies. Comput Geosci 11:531–546
Noble DC, Parker DF (1974) Peralkaline silicic volcanic rocks of western United States. Bull Volcanol 38:803–827
Norry MJ, Truckle PH, Lippard SJ, Hawkesworth CJ, Weaver SD, Marriner GF (1980) Isotopic and trace element evidence from lavas, bearing on mantle heterogeneity beneath Kenya. Phil Trans Roy Soc Lond A 297:259–271
Novak SW, Bacon CR (1986) Pliocene volcanic rocks of the Coso Range, Inyo County, California. US Geol Surv Prof Paper 1383
Papike JJ, Cameron KL, Baldwin K (1974) Amphiboles and pyroxenes: characterization of other than quadrilateral components and estimates of ferric iron from microprobe data. Geol Soc Amer Abs Prog 6:1053–1054
Philpotts RA, Schnetzler CC (1970) Phenocryst-matrix partition coefficients for K, Rb, Sr and Ba, with applications to anorthosite and basalt genesis. Geochim Cosmochim Acta 34:307–322
Reed JC Jr, Lipman PW, Robertson JR (1983) Geologic map of the Latir Peak and Wheeler Peak wildernesses and Columbine-Hondo wilderness study area, Taos County, New Mexico. US Geol Surv Misc Field Studies Map MF-1570-B
Robert JL, Maury RC (1979) Natural occurrence of a (Fe, Mn, Mg) tetrasilicic potassium mica. Contrib Mineral Petrol 68:117–123
Rytuba JJ, McKee EH (1984) Peralkaline ash flow tuffs and calderas of the McDermitt volcanic field, southeast Oregon and north central Nevada. J Geophys Res 89:8616–8628
Sakuyama M (1979) Evidence of magma mixing: petrological study of Shirouma-Oike calc-alkaline andesite volcano. Japan J Volcanol Geotherm Res 5:197–208
Sakuyama M (1981) Petrological study of the Myoko and Kurohime volcanoes, Japan: crystallization sequence and evidence for magma mixing. J Petrol 22:553–583
Schnetzler CC, Philpotts FA (1970) Partition coefficients of rare-earth elements between igneous matrix material and rock-forming mineral phenocrysts-II. Geochim Cosmochim Acta 34:331–340
Seifert F, Schreyer W (1965) Synthesis of a new mica, KMg2.5[Si4O10](OH)2. Amer Mineral 50:1114–1118
Shimizu N, Roex AP (1986) The chemical zoning of augite phenocrysts in alkaline basalts from Gough Island, South Atlantic. J Volcanol Geotherm Res 29:159–188
Sparks RSJ, Marshall LA (1986) Thermal and mechanical constraints on mixing between mafic and silicic magmas. J Volcanol Geotherm Res 29:99–124
Steven TA (1975) Middle Tertiary volcanic field in the southern Rocky Mountains. Geol Soc Amer Mem 144:75–94
Stormer JC Jr, Nichols J (1978) XLFRAC: a program for the interactive testing of magmatic differentiation models. Comput Geosci 4:143–159
Taylor RP, Strong DF, Fryer BJ (1981) Volatile control of contrasting trace element distributions in peralkaline granite and volcanic rocks. Contrib Mineral Petrol 77:267–271
Taylor SR (1964) The abundance of chemical elements in the continental crust — a new table. Geochim Cosmochim Acta 28:1273–1285
Thompson RA, Johnson CM (1987) Oligocene basaltic volcanism of the San Luis Hills, northern Rio Grande rift, Colorado. Geol Soc Amer Abs Prog 19:868
Thompson RA, Dungan MA, Lipman PW (1986) Multiple differentiation processes in early-rift calc-alkaline volcanics, northern Rio Grande rift, New Mexico. J Geophys Res 91:6046–6058
Watson EB (1979) Zircon saturation in felsic liquids: experimental results and applications to trace element geochemistry. Contrib Mineral Petrol 70:407–419
Weaver SD (1976) The Quaternary caldera volcano Emuruangogolak, Kenya rift, and the petrology of a bimodal ferrobasaltpantelleritic trachyte association. Bull Volcanol 40:209–230
Wolff JA, Storey M (1984) Zoning in highly alkaline magma bodies. Geol Magm 121:563–575
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Johnson, C.M., Lipman, P.W. Origin of metaluminous and alkaline volcanic rocks of the Latir volcanic field, northern Rio Grande rift, New Mexico. Contr. Mineral. and Petrol. 100, 107–128 (1988). https://doi.org/10.1007/BF00399442
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DOI: https://doi.org/10.1007/BF00399442