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| sedimentcontaminated Tertiary volcanics from Disko Island, Greenland Cyrena Anne Goodrich* and P. Jonathan Patchett...sedimentcontaminated Tertiary volcanics from Disko Island, Greenland. Lithos, 27:13-27. Nd and Sr isotopic data...for metallic iron-bearing volcanics from Disko Island, Greenland. These rocks are the products of contamination...iron-bearing flow at Asuk, which is one of the earliest contaminated sequences in the West Greenland basalt province...Introduction The Tertiary volcanic province of Disko Island, West Greenland, which is one of the provinces of plateau |
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| com/locate/lithos The Ilugissoq graphite andesite volcano, Nuussuaq, central West Greenland Asger Ken Pedersen a...Copenhagen K, Denmark Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK 1350 Copenhagen K, Denmark...Abstract The Ilugissoq graphite andesite volcano on Nuussuaq belongs to the Asuk Member of the Paleocene...recognized as the source of the majority of the graphite andesite tuffs found in marine sediments in central...magnesian andesite with several weight percent of graphite, which formed when mafic magma established a shallow-level |
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| THS IN METALLIC IRON-BEARING BASALTS, DISKO ISLAND, GREENLAND Wrr,rrau G. MBr.soNeNo Gnoncp Swrrzrn Departmentof...basalt flows from west Greenland commonly contain metallic iron and graphite. They are thus some of the...(Anzo-zu), graphite, rose-colored spinel and rarely corundum are included in these basalts on Disko Island...from other localities except for the presence oI graphite and in the composition of the spinel. The spinel...magmas in contact with graphite, particularly in an environment such as Disko, where active reduction |
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| mudstone xenoliths with native iron from Disko, central West Greenland A.K. Pedersen a and J.G. Ronsbo 2 1...with native iron from the A s u k M e m b e r on Disko contain Ti oxides which are oxygen deficient relative...recorded a m o n g native iron bearing rocks from Disko. The extremely reducing conditions were met in rocks...heretofore been reported as a mineral. On the island o f Disko rutile is widespread in the iron metal bearing...within the native iron bearing volcanic rocks on Disko. This p a p e r describes the p e t r o g r a p |
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| SCHREIBERSITE, AND SULPHIDES FROM TERTIARY BASALTS ON DISKO, GREENLAND By HANS PAULY* Abstract. In a short historic...the essential features of the iron occurrences on Disko. Tiny grains of iron are found scattered through...ratios which point to an organic origin of the graphite in these basalts. From an unpublished field report...for more than 100 years from the west coast of Greenland (BØGGILD, 1953). FORCHHAMMER (1854) described...It was collected at Niakornak, east of Disko, on the Greenland mainland (see map fig. 1). FORCHHAMMER |
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| AI-Armalcolite and Native Iron in a Lava From Asuk, Disko, Central West Greenland Asger Ken Pedersen Geologisk Museum...enclosed in basalt in a native iron bearing lava from Disko is similar in chemistry, apart from volatile components...Tertiary carbonaceous shale sediments from West Greenland, believed to have been the major contaminant and...formation of the native iron in the volcanic rocks on Disko. The shale buchite has preserved original sedimentary...equilibration. The xenolith contains native iron and graphite, while the immediately enclosing basalt does not |
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| Paleocene Picrites and Flood Basalts on Disko and Nuussuaq, West Greenland LOTTE M. LARSEN1* AND ASGER K. PEDERSEN2...PEDERSEN2 1 GEOLOGICAL SURVEY OF DENMARK AND GREENLAND (GEUS), STER VOLDGADE 10, DK-1350 COPENHAGEN...rift-related Paleocene volcanic succession in West Greenland comprises voluminous picrites (the Vaigat Formation)...stratigraphy for the c. 3 km combined succession on Disko and Nuussuaq has been established that provides...similar to the source for the E-type lavas on Baffin Island may be present in the earliest rocks. Melting took |
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| Native Iron-Bearing Andesite at Asuk, Disko, Central West Greenland Asger Ken Pedersen* Research School...Setting The non-stoiehiometric spine/s occur within graphite-rich shale xenoliths in an iron-bearing andesite...at the classical locality of Asuk (Fig. 1) on the north coast of Disko (Steenstrup, 1882). The sequence...gradation 1 Nicolau (1900) described a similar rock from Asuk as an andesite, and his nomenclature is continued...nomenclature of the native iron-bearing rocks from Disko will be discussed in a later paper 0010-7999/78/0067/0331/$02 |
 | Iacono-Marziano, Giada, Gaillard, Fabrice, Scaillet, Bruno, Polozov, Alexander G., Marecal, Virginie, Pirre, Michel, Arndt, Nicholas T. (2012) Extremely reducing conditions reached during basaltic intrusion in organic matter-bearing sediments. Earth and Planetary Science Letters, 357. 319-326 doi:10.1016/j.epsl.2012.09.052 | Journal (article/letter/editorial) |
| that we describe, with reported occurrences of graphite and native iron in igneous mafic rocks, implying...form of CH or CH2) to a standard basalt triggers graphite and native iron crystallization at depths of few...interaction graphite native iron saturation gas emissions carbon monoxide Siberian Traps Disko Island 1. Introduction...volatiles are considered, (iiii) saturation of graphite and native iron in the melt, as we deal with reduced...reactions at P and T (after Shi and Saxena, 1992). C[graphite] þ O2 ¼CO[fluid] 2 [fluid] We modelled the composition |
 | Robin, Eric, Swinburne, Nicola H.M., Froget, Laurence, Rocchia, Robert, Gayraud, Jérôme (1996) Characteristics and origin of the glass spherules from the Paleocene flood basalt province of western Greenland. Geochimica et Cosmochimica Acta, 60 (5) 815-830 doi:10.1016/0016-7037(95)00433-5 | Journal (article/letter/editorial) |
| the Paleocene flood basalt province of western Greenland ROBIN,’ NICOLA H.M. SWINBURNE,*.* LAURENCE FROGET...Paleocene sandstone beds in central Nuussuaq, western Greenland. These beds are a mixture of glass, smectite,... and calcite with rare occurrence of graphite and metal. The glass varies from a basaltic to a basic-andesitic...Fe-bearing basalts and andesites in the Nuussuaq and Disko area. This origin is further supported by the high...magma, and the presence of metal, sulphide, and graphite in the spherule layers. The occurrence in the |
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| of These Assemblages in Basalts from Ovifak, Greenland, and Biihl, Federal Republic of Germany Olaf Medenbach...Kassel (West Germany) and Ovifak on Disko Island (West Greenland). The typical assemblage of these xenoliths...near Kassel, West Germany, and Ovifak (Disko Island), West Greenland. The origin of these iron xenoliths...native-ironbearing acid volcanic rocks from the NW Disco island, approximately 100 km north of the classical Ovifak...and ilmenite 1. Ovifak, Disko Island, Greenland On the west coast of Greenland occurrences of native iron |
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| in the North Atlantic: new evidence from West Greenland L O T Y E M . L A R S E N 1, A S G E R K. P E...STEFAN PIASECKI 2 1The Geological Survey of Greenland, Oster Voldgade 10, DK-1350 Copenhagen K, Denmark...Early Tertiary volcanic hyaioclastitesin West Greenland contain dinoflagellate cyst assemblages corresponding...main platean-building volcanic phase in West Greenland is thereby constrained between 'top polarity chron...Tertiary Igneous Province, the volcanism in West Greenland started at an early stage, and the main plateau-building |
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| in Graphite-Equilibrated Salic Volcanic Rocks with Native Iron from Disko, Central West Greenland A.K...to daci~ic lavas from the Maligfit Formation on Disko contain an early phenocryst assemblage of plagioclase...consumed in a reduction process. Carbon, bound as graphite or cohenite, occurs throughout the rocks and is...between 10 and 100 bars. The scarcity of preserved graphite in the lavas would suggest that the carbon-controlled...ascent and solidification. Introduction The island of Disko is known for the largest and most varied occurrences |
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| Sulphide Bodies With Native Iron From Disko, Central West Greenland Asger Ken Pedersen Geologisk Museum...occurrence of strongly Ni-depleted reduced basalts on Disko shows that fractionation of metal and sulphides...iron-bearing volcanic rock units in Disko and Nfigssuaq, Central West Greenland. Sulphide blebs with native iron...(Nichiporuk et al., 1967). The glassy dyke rock from Disko to be described below provides an example of basalt...dyke) a native iron-bearing basaltic dyke in South Disko (Fig. 1), and Pedersen (1977) made additional observations |
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| VAASJOKI, On Basalt Rocks with Native Iron in Disko, West Greenland . . MAUNU HÄ.RME, A Zoned Skarn Dike in...immediately after. Eskola also diseussed the Preeambrian graphite-bearing sehists, deducing that they must originally...hornblende gneiss, mierocline-plagioclase gneiss,graphite-bearing schist, garnet-bearing pyroxene amphibolite...garnet, tourmaline, epidote, pyrrhotite, hematite, graphite, goethite, hydro-pyrrhotite and stoichiometric...meters thick. Farther from them one meets with graphite-bearing mica schlst. 38 Bulletin de la ComJmission |
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| VAASJOKI, On Basalt Rocks with Native Iron in Disko, West Greenland . . MAUNU HÄ.RME, A Zoned Skarn Dike in...immediately after. Eskola also diseussed the Preeambrian graphite-bearing sehists, deducing that they must originally...hornblende gneiss, mierocline-plagioclase gneiss,graphite-bearing schist, garnet-bearing pyroxene amphibolite...garnet, tourmaline, epidote, pyrrhotite, hematite, graphite, goethite, hydro-pyrrhotite and stoichiometric...meters thick. Farther from them one meets with graphite-bearing mica schlst. 38 Bulletin de la ComJmission |
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| basalts and magnesian andesites from Di ko, West Greenland by Asger Ken Pedersen KØBENHAVN 1985 Grønlands...kr.12O.00 Greenland. 1980 by J. M. Hurst. O. 139 Triassic Iithostratigraphy of ast Greenland between Scoresby...and faunas on the north coast of Ogssuaq, West Greenland. 1981 by Leifur A. Sfmonarson. D.kr. 160.00 o...graptolites from Washington Land, we tem orth Greenland. 1981 by M. Bjerreskov. D.kr. 11200 o. 143 Stratabound...mineralisation in the Permo-1iiassic af central Bast Greenland. 1982 by B. Thomassen, L. B. Oemmensen & H. K |
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| denne Bugt saae til som , forhindrede her ved Disko-Bugten ikke naae overalt nogen betydehg Højde...Bølgerne, at slaaes herfra tilbage i om og Disko Bugten er en stærk Bevægelse, og store Stykker...blevet kaldet «Island", fordi læiiderne benævne dette Steds Navn. det danske Island ed et Umn-...som f. og Isbedækning, og, ^) ^) «Danish Greenland, vil its kun paa enkelte sig Grønland, sees...blottet derved, Snelaget, 38.7, kun Steder paa Disko har jeg endvidere havt Lejlighed iagtttage Snelagets |
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| Umanaks og Uperniviks Distrikter samt paa Øen Disko (Isbræer, Basalt og tellurisk Jern) i 1878—80 ved...Ш. Beretning om en Undersøgelsesrejse til-Øen Disko i Sommeren 1898 af К. J. V. Steenstrup. (Hertil...Narsarsuk on the Firth of Tunugdliarfik in Southern Greenland by Gust. Flink. Introduction. In the summer...make charged logical of 1897 I visited South Greenland in order mineralogical by the and investigations... conducting with the geo- exploration of Greenland («Commissionen for Ledelsen af geologiske og |
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| mantle plume osmium isotope signature from West Greenland Tertiary picrites Bruce F. Schaefer *, Ian J....Nuussuaq Peninsula and Qeqertarssuaq (Disko) Island, West Greenland, preserve trace element and isotopic...Crustally contaminated basalts within the West Greenland sequences possess Os and Nd isotopic signatures...head compositions and two discrete types of West Greenland continental crust. One crustal component is of...Hawaiian magmatism. Therefore, portions of the West Greenland continental flood basalt province arguably represent |
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| MINERAL SPECIES FffiST DESCRIBED fron1 GREENLAND Ole V. Petersen & Ole Johnsen Also in this series... MINE. RAL ....... SPECIES FIRST DESCRIBED froin GREENLAND Ole V. Petersen & Ole Johnsen The Canadian Mineralogist...organizations: The Commission for Scientific Research in Greenland Geologisk Museums St0ttefond (Geological Museum's...document on the minerals first discovered in Greenland. After all, as they point out in the first sentence...Introduction, a mere 26 kilometers separates Greenland from Canada along Nares Strait; we are neighbors |
 | Storey, M, Duncan, R.A, Pedersen, A.K, Larsen, L.M, Larsen, H.C (1998) 40Ar/39Ar geochronology of the West Greenland Tertiary volcanic province. Earth and Planetary Science Letters, 160 (3) 569-586 doi:10.1016/s0012-821x(98)00112-5 | Journal (article/letter/editorial) |
| (1998) 569–586 Ar=39 Ar geochronology of the West Greenland Tertiary volcanic province M. Storey a,Ł , R.A...K, Denmark d Geological Survey of Denmark and Greenland, Thoravej 8, DK-2400 Copenhagen NV, Denmark Received...Abstract Paleocene volcanic rocks in West Greenland and Baffin Island were among the first products of the...study shows that volcanism commenced in West Greenland between 60.9 and 61.3 Ma and that ¾80% of the...(rift). The timing of onset of volcanism in West Greenland coincides with the opening of the northern Labrador |
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| corroded rockbridgeite on the 67-m level in the island Vulcano of the Lipari group, north of Sicily, Italy...mudstone xenoliths with native iron from Disko, central West Greenland. Contrib. Mineral. Petrol., 96,3546...carbonaceousmudstones that occur at Asuk on northern Disko, Greenland, in a strongly reduced andesite breccia...lunar rocks, but the Vanadium-titanium carbide Disko material constitutesthe first description of magn6li...vanadium-titanium car- phasesas minerals. bide inclusion in graphite from hydrothermal ejecta at AlTi phasesA and B |
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| Sulphide Liquids from a Basaltic Dyke on Disko, Central West Greenland by FINN ULFF-M0LLER Geologisk Museum...ledge in the sediment-contaminated Kitdlit dyke on Disko. The lens displays a mineralogical diversity and...implications. INTRODUCTION The Lower Tertiary West Greenland Basalt Province (Clarke & Pedersen, 1976) is famous...iron-bearing volcanic rocks on Disko island. Theories for the origin of the 'Disko iron' include (a) meteorite...et al, 1981). The extensive literature on the 'Disko iron' (reviewed by Sjogren, 1916; B0ggild, 1953; |
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| incIusions in natural ironing alloy, Risk0 Island, Greenland Department ofC&ological S&en- Corndl University...reduced by teixstrial standards occur on Disko Island, West Greenland. These IQ& arc the products of SFaction...composition the intragranular s&ate inebrsions Disko, was kindly loaned to us by the Mine~~~~ are enriched...indication of amount of pore material. ANDERSON and GREENLAND (1969) measured P distribution coefficients, DP...be useful. pyroxene and olivine (ANDERSONand GREENLAND, 3) Possibly the most important factor that could |
