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| in Undersaturated Volcanic Rocks from the East Otago Volcanic Province (New Zealand) and Related Rocks...petrology of the East Otago Volcanic Province (late Miocene), including the Dunedin Complex, is dominated...range of relatively potassic volcanic rocks is also developed in the Province. The degree of undersaturation...intrusives in the Province, assessed in conjunction with similar data from other volcanic provinces, demonstrate...production of phonolite from trachyte in the East Otago Province has not been demonstrated. The mafic variants |
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| Petrology of Dunedin Volcano R.C. Price Department of Geology, University of Otago, Dunedin, New Zealand* B.W...indicate that the range in rock types making up the Dunedin volcano has developed by crystal fractionation...Introduction Age and History of the Volcanism The Dunedin Volcanics form a prominent massif about 30 km in...centred on Port Chalmers in the middle reaches of Otago Harbour, across the northeastern end of the Taieri...Taieri graben (Fig. 1). Volcanism in the Dunedin area commenced with the emplacement of submarine basaltic |
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| NEW ZEALAND DEPARTMENT OF SCIENTIFIC AND INDUSTRIAL RESEARCH NEW ZEALAND GEOLOGICAL SURVEY 125th ANNIVERSARY...1865 -1990 NEW ZEALAND GEOLOGICAL SURVEY BULLETIN 104 ISSN 0077-9628 Minerals of New Zealand by G. L....initials should be G.T., not G.L. Lower Hutt, New Zealand 1990 I I Beach sand, alluvium, • terrace...rocka, particularly greywacke Young (Cenozoic) volcanic rocks, including 4. modern volcanoes 5. s 9...9 Iii ■ t Old (Mesozoic and Paleozoic) volcanic rocks Schist Gneiss and granulite 20 6 Figure |
 | Green, D. H., Edgar, A. D., Beasley, P., Kiss, E., Ware, N. G. (1974) Upper mantle source for some hawaiites, mugearites and benmoreites. Contributions to Mineralogy and Petrology, 48 (1) 33-43 doi:10.1007/bf00399108 | Journal (article/letter/editorial) |
| high pressure mineralogy in north-eastern Otago, New Zealand led Wright (1966) and Price and Green (1972)...of Mg @ Fe+~ values for 130 lherzolite-bearing volcanic rocks of Tertiary to Recent age occurring in Eastern...Sutherland): T10, T23, T25, T29 Tasmanian Tertiary Basalt province: 2943 Mr. Mitchell, south-eastern Queensland Main...Mg-values define the Mg-value of olivine in the source region for basalts as FOss_90, and if the upper mantle...nepheline hawaiite (25) (Table 1). The Tasmanian province also contains unfractionated (in the sense of |
 | Brenna, Marco, Pontesilli, Alessio, Mollo, Silvio, Masotta, Matteo, Cronin, Shane J., Smith, Ian E.M., Moufti, Mohammed Rashad Hassan, Scarlato, Piergiorgio (2019) Intra-eruptive trachyte-phonolite transition: Natural evidence and experimental constraints on the role of crystal mushes. American Mineralogist, 104 (12) 1750-1764 doi:10.2138/am-2019-6963 | Journal (article/letter/editorial) |
| Scarlato7 Geology Department, University of Otago, Dunedin, New Zealand. Orcid 0000-0001-6096-6999 2 Geology...Geology Department, University of Otago, Dunedin, New Zealand 3 Dipartimento di Scienze della Terra, Sapienza...Environment, University of Auckland, Auckland, New Zealand 6 Faculty of Earth Sciences, King Abdulaziz University...Shaatha pyroclastic sequence in the Harrat Rahat Volcanic Field (Kingdom of Saudi Arabia). We performed...intraplate volcanic settings, trachytes and phonolites are frequently associated within the same volcanic system |
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| Netherlands 323 Petrology and geochronology of volcanic rocks from seamounts along and near the Hawaiian...Naughton, J.J .• 1987. Petrology and geochronology of volcanic rocks from seamounts along and near the Hawaiian...data base. New ages further document the linear age progression along the cham and define a new propagation...of the chain consists of seamounts (87 of I07 volcanic edifices that comprise the chain and all but four...ever been undertaken. Rocks from only 8 of the 48 volcanic edifices between Nihoa Island and the bend in |
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| SVSr/86Sr ratio (0.707) typical of basalts in this region. The very low Rb/Sr ratios limit processes that...south-central part of the Great Basin physiographic province. The basin is partly filled by alluvium, with...local outcrops of tuff of Miocene age and basaltic volcanic rocks of Pliocene and Quaternary age. The basalts...cones, lava flows, and associated dikes. These volcanic rocks, plus a cluster of cones and flows immediately...Nevada (Fig. 1). Details of this north-north-east trending volcanic belt are described in Crowe et al. (1980) |
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| Earth Sciences, Macquarie University, North Ryde, New South Wales 2113 Australia ABSTRACT. Cainozoic alkali...alkali baS'altic rocks from the Southern Highlands province, eastern Australia, range from olivine nephelinites...Southern Highlands province (fig. I) covers approx 50 km2 southwest of Sydney, New South Wales, Australia...Southern Highlands basaltic rocks as a discrete province is partly based on their geographical distribution...charac terize the Southern Highlands as a discrete province, to show the domi nance of primary or primitive |
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| NORTH ISLAND NEW ZEALAND Poor Kn1ght1 Is • . ,, r ,n H~n & C h1ck...Mayor I WodlO(O Rivt~r I'. MY OF East C,pe Pf.NEW PLYMO • Cil.pe Eimo C • Portl...I . I SOUTH PACIFIC /ocEAN I I Chalmer,: OTAGO PENINSULA NEDIN ---- :aitangata Clvtho River...ISLAND f Pq,1 Pt., 1~s II t I SOUTH ISLAND NEW ZEALAND +I s University College Cardiff Library...' _____ TELE - . _, • The Geology of New Zealand Volume 2 •• J-----~---.. ~ ::,,::::j::~. |
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| NORTH ISLAND NEW ZEALAND Poor Kn1ght1 Is • . ,, r ,n H~n & C h1ck...Mayor I WodlO(O Rivt~r I'. MY OF East C,pe Pf.NEW PLYMO • Cil.pe Eimo C • Portl...I . I SOUTH PACIFIC /ocEAN I I Chalmer,: OTAGO PENINSULA NEDIN ---- :aitangata Clvtho River...ISLAND f Pq,1 Pt., 1~s II t I SOUTH ISLAND NEW ZEALAND +I s University College Cardiff Library...' _____ TELE - . _, • The Geology of New Zealand Volume 2 •• J-----~---.. ~ ::,,::::j::~. |
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| California, Berkeley, California FIRST EDITION l NEW YORK TORONTO LONDON McGRAW-HILL BOOK COMPANY,...'\'olcanic and Plutonic Rocks. CharacterisLics of Volcanic Rocks. Characteristics of Plutonic Rocks. Outline...TRACEYTE VOLCANIC ASSOCIATION. Introductory Statement. The Volcanic Rocks of the Intra-Pacific Region. Volcanic...Leucite-Basalt Potash-Trachybasalt Association 9. VOLCANIC ASSOCIATIONS OF NONOROGENIC CONTINENTAL REGIONS...Diabase Association. The Volcanic Association of the Brito-Arctic Province. Petrogenesis of the Tholeiite |
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| syenite plutons of the Gardar alkaline igneous province of south-west Greenland. The complex, which consists...petrology and evolution of the Precambrain Gardar province have been reviewed b y Bridgwater (1965), Berthclsen...incorporating 5, 10 and 15 molecular percent of the anorthite endmember respectively. The point P is the al...0 , attributable to a small proportion of the anorthite molecule. The point F (Fig. 3) represents the...containing 5, 10 and 15 molecular percent of the anorthite endmember respectively (see caption to Fig. 3) |
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| as that covered by the entire set of basaltic volcanic suites from picrites and ankaramites to rhyolitcs...rhyolitcs, trachytes and phonolites. Introduction Volcanic lavas are surely the group of igneous rocks whose...higher temperatures than olivine, especially in the region where the magnetite melting curve crosses those...One-atmosphere liquidus versus MgO for terrestrial volcanic rocks. Filled symbols are silicate liquidi. Open...represented by the lavas, in several closely-studied volcanic sequences pass from labradorite-normative to andesine-normative |
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| relationships with the leucitebearing lavas of the Roman Region. The clinopyroxenites are essentially composed...inclusions in leucitebearing volcanics of the Roman Region (Lacroix, 1917a and 1917b; Washington, 1927;Narici...ultramafic xenolith assemblages from the Roman Region have encouraged the author over the past few years...investigated and controversial volcano of the Roman Region (Rittmann, 1933; Hurley et al., 1966; Savelli,...natural c l i n o p y r o x e n e from the R o m a n Region (e.g. VEI 16: A1vi = 0 . 1 2 - 0 . 1 8 , CaAlzSiO |
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| Spinel-Wehrlite Xenoliths from Foster Crater, McMurdo Volcanic Group, Antarctica by J. A. GAMBLE 1 AND P. R....to many of the basanites from the Erebus Volcanic Province. Textural relationships of the kaersutite...Wellington, Private Bag, Wellington, New Zealand 2 Department of Geo sciences, New Mexico Institute of Mining and...and Technology, Socorro, New Mexico 87801 756 J. A. GAMBLE AND P. R. KYLE PETROGRAPHY Amphibole-and...scoria cone in the Erebus volcanic province of the Late Cenozoic McMurdo Volcanic Group (Kyle & Cole, 1974; |
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| along the eastern margin of the Basin and Range province in northern Arizona and Utah has created a suite...basaltic volcanism for the whole Basin and Range province, are explained in terms of upper mantle dynamics...Cenozoic in the core area of the Basin and Range province and causing progressive thinning or "erosion"...nature of the basaltic lavas in the Basin and Range province and related their origin to high surface heat...about 18 m.y. ago in the western Basin and Range province that marked the calc-alkalic to basaltic transition; |
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| sapphire-zircon-magnetite xenolith from the Chanthaburi Gem Province, Thailand ROBERTR. COENRAADS The Gemmological...the alkali basaltic volcanism in the Chanthaburi Province, These data suggest a common origin for sapphire...Gem Province is within the rectangle, shown enlarged in Fig. 2. associated with each gem province are...y d e p o s i t s Gtra Location CHANTHABURI PROVINCE Tha Mai District (The First or Western Zone) -Khan...and terrace gravels Tr x x x Tr x SUKHOTHAI PROVINCE Si Satchanalai District -Ban Huai Po-Ban Pak SinBan |
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| Volcanic rock associations at convergent plate boundaries: Reappraisal of the concept using case histories...histories from Papua New Guinea D i f MACKENZIE I.E.M. SMITH* ) Bureau Department °f Mineral Resources...Resources, P. O. Box 378, Canberra City, ACT 2601, of Geology, Australian National Australia University...Nevertheless, belief is now widespread that the volcanic rocks of island arc and pontinental margins —...Cenozoic volcanic provinces in Papua New Guinea are used in this paper to identify three volcanic rock groups |
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| of north-east Treland have played an important part in the history of research on volcanic rocks. The...km1 in a shallow faulted oval basin. Seventy-four new major element chemical analyses have been made of...among the alkali-rich rocks near the top of the volcanic pile, at present exposure level. The almost patternless...analyses and one-atmosphere melting experiments on the new material. CHEMICAL VARIATION IN LAVAS OF THE ISLE...petrographic province where they were previously unknown. CHEMISTRY A total of seventy-four new major element |
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| 9 by Springer-Verlag 1978 Nature of Alkalic Volcanic Rock Series Akiho Miyashiro Department of Geological...Geological Sciences, State University of New York at Albany, Albany, New York 12222, USA Abstract. The alkalic...n a p p e a r to exist in large-scale alkalic volcanic associations. One (here d e s i g n a t e d as...contamination in the Triassic subalkalic (tholeiitic) province of the eastern United States (e.g., Barker and...appears unworkable so far as large-scale alkalic volcanic associations are concerned. All rocks, from mafic |
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| Franklin) which are similar to those from Delegate, New South Wales [5], megacrysts of pyroxene, amphibole...Lake Keilumbete Nephetine mugearite, Mt. Anakie (east) C.I.P.W. calculated with Fe/O 3 adjusted to 2.00...have been found by the author only at Mt. Anakie (east) and Mt. Shadwell, though Irving [3] reported rare...the more evolved trachytes of the Newer Basalt province, where it is arfvedsonitic [1]. However, large...a r e d with mica which has crystallized under volcanic conditions these high-pressure samples have very |
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| magmatic systems. Here, we present new major and trace element data for volcanic glasses from the classically...zoning · Trace element Introduction Explosive volcanic eruptions commonly emplace chemically zoned deposits...evolution of the magmatic system in the light of this new glass data and demonstrate an important role for...background Laacher See volcano is located in East Eifel Volcanic Field (EEVF) of western Germany, part of...of the Cenozoic alkaline intraplate volcanic province of central Europe that produced basanites, leucitites |
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| between the hawaiites and basalts of the Itcha Volcanic Complex, central British Columbia Received: 26...form the shield of the Itcha Volcanic Complex (IVC), of the Anahim Volcanic Belt (AVB) in central British...Grove alkaline volcanic suites of the Canadian Cordillera, such as the Edziza Volcanic Complex in northern...commonly a dominant rock type in mafic alkaline volcanic suites in both oceanic and continental intraplate...derivation of the hawaiites of the late Tertiary Edziza Volcanic Complex from more primitive AOB lavas by low-pressure |
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| and 43 Tables Springer-Verlag Berlin Heidelberg New York 1980 Dr. ALOK K. GUPTA Department of Geology...questions arise in connection with the highly potassic volcanic association dominated by mafic and ultramafic...47 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 Volcanic Fields, East and Southeast of Ru wenzori, Uganda . .... . . . . . . . . . . . . . . . . Birunga Volcanic Province . . . . . . . . . . . . . . . . . Leucite-Bearing...West Kimberley, Australia Leucite-Bearing Rocks of New South Wales, Australia. . . . . . . . . . . . . |
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| other flows chosen from the Southern Highlands (New South Wales) and the Massif Central (France) also...clinopyroxene megacryst populations. Both of these volcanic provinces represent Cainozoic a]~kali basaltic...34°36 ' S , 150015' E , 10 km SW lVlos,s Vale: 5. Volcanic neck, 34°]2'S, 150°32'E, ! k n N E Kangaloon:...150°2fiE, 9.5 km NW Moss Vale: 8. Lowermost flow o f volcanic centre, 34°41'S, 149043' E, 15 km N Goulburn....have not been found in the Southern Highlands province or in the basalts studied from the M ~ s i f Central |
