 | Cullis, C.C., Louis, D.A., Giraud, M., Glangeaud, M., Marty, M.Pierre (1902) Long excursion to the Auvergne. Proceedings of the Geologists' Association, 17 (6) 269 doi:10.1016/s0016-7878(02)80066-9 | Journal (article/letter/editorial) | | Cra ix .1h,·:,·,wcl l LONG EXCURSION TO THE AUVERGNE. AUGUST 17TH TO AUGUST 30TH, 1901. Directors:...PREFATORY REMARKS. H E geological excursions in the Auvergne and neighbourhood, T forming the subject of this...remaining six days, of which four were passed in the Cantal, one in Correze, and one in the Pay-de-Dome, the...reproduced, with permission, from his Monograph on the Volcano of Gravenoire. Figures 41 and 51 are from sketches...evening of Thursday, August 15th, 1901, for the Auvergne. PROC. GEOL. A ssoc.. VO L. xnr, PA RT 6 , FE |  | | Journal (article/letter/editorial) | | pyroxenes in the Tertiary alkali basalts of the Cantal massif (French Massif Central) S. Pilet1 , J. Hernandez1...volcaniques, Universite P. et M. Curie, Paris, France Received February 2, 2001; revised version accepted...rocks of many magmatic alkaline provinces. In the Cantal massif, green-core pyroxenes occur in nearly all...percolation and the formation of GCPX observed in Cantal basalts. We propose that GCPX crystallized in a...and pyroxenes observed in the phonolites of the Cantal massif. Amphibolitic siliceous metasomatic veins |  | | Report (chapter) | | and Quaternary volcanism in the Massif Central, France Hilary Downes S U M M A R Y : Continental alkaline...Deves) and two central volcanoes (Mont-Dore and Cantal). Maars and diatremes are common, indicating interaction...Oligocene graben system. Subsequently the central volcano Cantal (112.5 Ma) and the plateau-forming fissure...Escandorgue and the eruption of the second central volcano Mont-Dore. The youngest activity (Recent) is in...University Library on June 7, 2015 Massif Central, France Bourgogne 519 - Charollais Menat Sioule Ch |  | | Journal (article/letter/editorial) | | undersaturated alkaline volcanics, Cantal, Massif Central, France H. DOWNES Department of Geology, Birkbeck...mixing in the Puy Griou/Griounot area of the Cantal volcano (10 3 Ma). Petrographic evidence for injection...KEYWORDS:magma mixing, alkaline volcanics, Massif Central, France. Introduction IT is now widely accepted that magma...dominated by two late Tertiary central volcanoes, Cantal (10-3 Ma) and Mont Dore (2.5-0.25 Ma). In these...rhyolite magmas are well-known from the Mont Dore volcano and the Chaine des Puys. It is considered that |  | | Journal (article/letter/editorial) | | AND PRE-HERCYNIAN ORTHOGNEISSES, MASSIF CENTRAL (FRANCE) HILARY DOWNES and JEAN-LOUIS DUTHOU Department...de Clermont II, F-63038 Clermont Ferrand C6dex (France) (Accepted for publication December 29, 1987) ...and pre-Hercynian orthogneisses, Massif Central (France). Chem. Geol., 68: 291-308. The Cadomian-Hercynianbasement...Cadomian-Hercynianbasement of the Massif Central, France, contains both pre-metamorphic orthogneisses (600-410 Ma)...from the Hercynian basement of the Massif Central, France. The nature of the present-day lower crust of the |  | | Report (volume) | | and Quaternary volcanism in the Massif Central, France 517 KOGARKO, L. N. Alkaline rocks of the eastern...by their association with economic deposits of apatite (Kogarko) and with diamonds (Dawson; Bergman)...by their association with economic deposits of apatite (Kogarko) and with diamonds (Dawson; Bergman)...transitional basalts, and these typically form major volcano complexes and have associated felsic magmas. Such...geology, petrology and geochemistry of Caldeira volcano, Graciosa, Azores, and its bearing on contemporaneous |  | Kizovski, T.V., Izawa, M.R.M., Tait, K.T., Moser, D.E., Day, J.M.D., Hyde, B.C., White, L.F., Kovarik, L., Taylor, S.D., Perea, D.E., Barker, I.R., Joy, B.R. (2020) Petrogenesis, alteration, and shock history of intermediate shergottite Northwest Africa 7042: Evidence for hydrous magmatism on Mars?. Geochimica et Cosmochimica Acta, 283. 103-123 doi:10.1016/j.gca.2020.05.030 | Journal (article/letter/editorial) | | (An5-30Ab16-61Or1-47), and accessory merrillite, apatite, ilmenite, 38 titanomagnetite, Fe-Cr-Ti spinels...terrestrial basalt standards (Basalt Hawaiian Volcano Observatory (BHVO)-2, and Basalt 228 Columbia...(maskelynite glass), 240 accessory Mg-rich merrillite, apatite, pyrrhotite, ilmenite, spinels, and baddeleyite...common phosphate mineral observed in NWA 7042. Apatite 316 is typically observed rimming merrillite...merrillite in contact with maskelynite. EPMA of apatite 317 shows that they contain approximately equal concentrations |  | | Book | | Mineralogical Society of America (Fig. 6.6), Montserrat Volcano Observatory (Fig. 7.4a and the front cover image)...previously erupted products the hazard presented by a volcano to surrounding communities; • investigating magma...chamber that originally lay 5 km below an active volcano (but whose contents – or erupted products – are...nomenclature. Examples are chromite, magnetite, apatite and ilmenite. 4 Post-magmatic minerals: minerals...alkali basalts that have erupted at later stages of volcano development. To show how this can be applied, the |  | | Book (edition) | | Typhon is buried under Etna volcano. Whenever the giant stirs, the volcano erupts violently. Eighteenth...Science, New Zealand Stephen R. McNutt Alaska Volcano Observatory and University of Alaska Fairbanks...Hazard from Lahars and Jökulhlaups Synthesis of Volcano Monitoring 973 1121 John B. Murray, Hazel Rymer...McNutt Impacts of Eruptions on Human Health Volcano Warnings Volcanic Crises Management Peter J. Baxter...Related Phreatomagmatic Eruptions Synthesis of Volcano Monitoring 495 1165 Volcanic Lakes Volcanic Materials |
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