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| metallic iron-bearing, sedimentcontaminated Tertiary volcanics from Disko Island, Greenland Cyrena Anne...metallic iron-bearing, sedimentcontaminated Tertiary volcanics from Disko Island, Greenland. Lithos,...are reported for metallic iron-bearing volcanics from Disko Island, Greenland. These rocks are the products...mixtures of two Sr components. A metallic iron-bearing flow at Asuk, which is one of the earliest contaminated...contaminated sequences in the West Greenland basalt province, can be modelled as a simple mixture of uncontaminated |
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| graphite andesite volcano, Nuussuaq, central West Greenland Asger Ken Pedersen a,⁎, Lotte Melchior Larsen...Copenhagen K, Denmark Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK 1350 Copenhagen K, Denmark...graphite andesite volcano on Nuussuaq belongs to the Asuk Member of the Paleocene Vaigat Formation. It is...rich in graphite and contain little or no native iron. In comparison, the contemporaneous and chemically...lavas and breccias from Disko and Nuussuaq contain less graphite and more iron. The differences are considered |
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| PHITEXENOLITHS IN METALLIC IRON-BEARING BASALTS, DISKO ISLAND, GREENLAND Wrr,rrau G. MBr.soNeNo Gnoncp...Tertiary basalt flows from west Greenland commonly contain metallic iron and graphite. They are thus some...rarely corundum are included in these basalts on Disko Island. The xenoliths are remarkably similar to reconstituted...an environment such as Disko, where active reduction of ferrous iron to iron evidently occurred. The...content, and low-iron spinel substantiate the idea of derivation of the metallic iron by near surface |
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| mudstone xenoliths with native iron from Disko, central West Greenland A.K. Pedersen a and J.G. Ronsbo...subaquatic breccia with native iron from the A s u k M e m b e r on Disko contain Ti oxides which are oxygen...e coal fragments in a glassy matrix with native iron. The blue oxides are compositionally similar to...environment yet recorded a m o n g native iron bearing rocks from Disko. The extremely reducing conditions were...rutile with greenish colour has been reported from iron meteorites (El G o r e s y 1971). Several occurrences |
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| CAST IRON WITH COHENITE, SCHREIBERSITE, AND SULPHIDES FROM TERTIARY BASALTS ON DISKO, GREENLAND By HANS...the essential features of the iron occurrences on Disko. Tiny grains of iron are found scattered through...sheets covering hundreds of square kilometres. The iron was formed in the basalts through interaction with...unpublished field report by Dr. FISCH the setting of the iron basalts is illustrated. Examinations of polished...first and foremost the "white cast iron nature" of the massive iron from Uivfaq so often described in |
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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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| AI-Armalcolite and Native Iron in a Lava From Asuk, Disko, Central West Greenland Asger Ken Pedersen Geologisk...native iron bearing buchite xenolith enclosed in basalt in a native iron bearing lava from Disko is similar...Tertiary carbonaceous shale sediments from West Greenland, believed to have been the major contaminant and...causing the formation of the native iron in the volcanic rocks on Disko. The shale buchite has preserved...short-range equilibration. The xenolith contains native iron and graphite, while the immediately enclosing basalt |
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| Xenoliths From a Native Iron-Bearing Andesite at Asuk, Disko, Central West Greenland Asger Ken Pedersen*...spinels are free f r o m o r very p o o r in ferric iron a n d v a r y c o n s i d e r a b l y within the...occur within graphite-rich shale xenoliths in an iron-bearing andesite I breccia described by Steenstrup...at the classical locality of Asuk (Fig. 1) on the north coast of Disko (Steenstrup, 1882). The sequence...Petrography of the Andesite The enclosing native iron-bearing andesite (for a chemical analysis see Table |
 | 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) |
| with reported occurrences of graphite and native iron in igneous mafic rocks, implying very reducing conditions...to a standard basalt triggers graphite and native iron crystallization at depths of few hundred meters...calculations, we suggest that the production of native iron-bearing lava flows and associated intrusions was...graphite native iron saturation gas emissions carbon monoxide Siberian Traps Disko Island 1. Introduction...considered, (iiii) saturation of graphite and native iron in the melt, as we deal with reduced condition. |
 | 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,...Fe-bearing basalts and andesites in the Nuussuaq and Disko area. This origin is further supported by the high...the sequence of lavas on Disko, the Asuk Member of the Vaigat Formation. The Asuk Member is highly unusual...siderophile elements (K&k et al., 1986). The Abraham-Asuk correlation was made on the basis of the occurrence |
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| Iron Fe c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Cubic. Point Group: 4/m 3 2/m...Optical Properties: Opaque. Color: Steel-gray to iron-black; in polished section, white. Luster: Metallic...065 0.207 0.37 99.18 99.802 (1) Blaafjeld, Greenland. (2) Cameron, Missouri, USA. Occurrence: Rare...In Greenland, at Fortune Bay, Mellemfjord, Asuk, and elsewhere on the west coast; on Disko Island, near...Township, Nipissing district, and on St. Joseph Island, Lake Huron. Noted in small amounts at a number |
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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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| Native Iron-Bearing Assemblages and the Origin of These Assemblages in Basalts from Ovifak, Greenland, and...native-iron-bearing xenoliths from the basalt of Biihl near Kassel (West Germany) and Ovifak on Disko Island...Island (West Greenland). The typical assemblage of these xenoliths at both localities is: native Fe, troilite... Ulv6spinel crystallized after the formation of iron, but still above the Fe-FeS eutectic at 988 ~ C...West Germany, and Ovifak (Disko Island), West Greenland. The origin of these iron xenoliths is still under |
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| Salic Volcanic Rocks with Native Iron from Disko, Central West Greenland A.K. Pedersen Geologisk Museum...t)K-1350 Kobenhavn K., Denmark Abstract. Native iron-bearing strongly sediment-contaminated andesitic...to daci~ic lavas from the Maligfit Formation on Disko contain an early phenocryst assemblage of plagioclase...invariant assemblage (ilmenite-armalcolite-rutile-iron) and the 3 boundary univariant reactions in the...ascent and solidification. Introduction The island of Disko is known for the largest and most varied occurrences |
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| Immiscible Sulphide Bodies With Native Iron From Disko, Central West Greenland Asger Ken Pedersen Geologisk Museum...in a basaltic glass rock (rag=66) from a native iron-bearing dyke chilled at T = 1,200 ~ C and P = 250...sulphide bodies are composed of troilite (90-91%), iron (9-10%) and very scarce vanadium-rich chromite and...siderophile character of the elements. K Dnickel-iron(sulphide/olivine) 63 is much higher than an experimentally...thermodynamic data on Ni-partition between olivine and iron metal suggests that the positive deviation is roughly |
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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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| GO_19_GO19_OpenType 2/15/11 12:39 PM Page 1 IRON ore potential in GREENLAND No. 19 - March 2011 GO_19_GO19_OpenType...GEOLOGY AND ORE 19 / 2011 Iron ore potential in Greenland The Greenland iron ore potential is mainly based...based on Archaean sedimentary and chemical iron deposits (BIF). However, notable occurrences related...demonstrated prominent iron ore accumulations. BIF type occurrences deliver the majority of iron ore and are amongst...important iron sources. Greenland also has vast potentials in deposits related to banded iron formations |
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| 23/02/07 13:16 Page 1 The PGE potential in Greenland No. 8 - February 2007 GO_08.qxp 23/02/07 ...potential in Greenland The potential for Platinum Group Element (PGE) resources in Greenland is clear and...Palaeogene environments. The PGE potential in Greenland attracted interest already in the 1960s and has...1970s . The corporate interest in PGE targets in Greenland was initiated by Kryolitselskabet Øresund in the...and was related to a suite of norites in West Greenland. Platinomino A/S was established in 1968 to search |
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| VAASJOKI, On Basalt Rocks with Native Iron in Disko, West Greenland . . MAUNU HÄ.RME, A Zoned Skarn Dike...metasomatic replacement of lime, soda and potash by iron oxides and magnesia. These main features are the... Bd. I , p. 345-359. Suomen rauta. Summary: The iron in Finland. Suomen Kemistil., 11. vsk., A , p. 43-45...2 ON BASALT ROCKS WITH NATIVE IR ON IN DISKO, WEST GREENLAND 1) BY O. VAASJOKI Department 0/ Geology...eharaeteristie of basalt roeks eontaining native iron in Disko island. The aBsoeiation of anorthositie eomponent |
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| VAASJOKI, On Basalt Rocks with Native Iron in Disko, West Greenland . . MAUNU HÄ.RME, A Zoned Skarn Dike...metasomatic replacement of lime, soda and potash by iron oxides and magnesia. These main features are the... Bd. I , p. 345-359. Suomen rauta. Summary: The iron in Finland. Suomen Kemistil., 11. vsk., A , p. 43-45...2 ON BASALT ROCKS WITH NATIVE IR ON IN DISKO, WEST GREENLAND 1) BY O. VAASJOKI Department 0/ Geology...eharaeteristie of basalt roeks eontaining native iron in Disko island. The aBsoeiation of anorthositie eomponent |
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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 |
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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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| incIusions in natural ironing alloy, Risk0 Island, Greenland Department ofC&ological S&en- Corndl University...which were trapped as immiscible liquids within iron-o&on liquid. The structural formulae of the pyroxene...that were trapped within iron-carbon liquid before accumulation of the iron grains to form the boulder...NATIVE IRON-BEARING rocks that are unusually reduced by teixstrial standards occur on Disko Island, West...West Greenland. These IQ& arc the products of SFaction between Early Tertiary picritic to tholeiitic magmas |
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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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| Sulphide Liquids from a Basaltic Dyke on Disko, Central West Greenland by FINN ULFF-M0LLER Geologisk Museum...Copenhagen K., Denmark ABSTRACT A unique troilite-iron-cohenite-rich lens was found on a ledge in the ...sediment-contaminated Kitdlit dyke on Disko. The lens displays a mineralogical diversity and extreme...gradient. The lower iron-rich half of the lens formed by crystallization of iron, cohenite, troilite...of the upper troilite-rich half of the lens was: iron, cohenite, troilite, chromite, wustite, fayalite |
