Search Results - "BILLSTRÖM, K"

Petrogenesis of Permian alkaline lamprophyres and diabases from the Spanish Central System and their geodynamic context within western Europe by Orejana, D., Villaseca, C., Billström, K., Paterson, B. A.

“…Basic to ultrabasic alkaline lamprophyres and diabases intruded within the Spanish Central System (SCS) during Upper Permian. Their high LREE, LILE and HFSE…”
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Multiple crustal sources for post-tectonic I-type granites in the Hercynian Iberian Belt by Villaseca, C., Bellido, F., Pérez-Soba, C., Billström, K.

“…A post-tectonic plutonic array of felsic I-type granites crops out in the western Hercynian Iberian Belt. Isotope (Sr, Nd, Pb) data favour the absence of an…”
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Geochronological, stable isotopes and fluid inclusion constraints for a premetamorphic development of the intrusive-hosted Björkdal Au deposit, northern Sweden by Billström, K., Broman, C., Jonsson, E., Recio, C., Boyce, A. J., Torssander, P.

“…The Björkdal gold deposit, bound to a quartz vein system which is mainly hosted by a quartz-monzodioritic intrusion, is situated at the easternmost part of the…”
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Isotopic constraints on the age and source of ore-forming fluids of the Bou Azzer arsenide ores (Morocco) by Subías, I., Fanlo, I., Hajjar, Z., Gervilla, F., Billström, K.

“…[Display omitted] •Ores formed during multi-episodic hydrothermal events in Devonian-Carboniferous times.•Ophiolite-related rocks do not exhibit typical mantle…”
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Isotopic composition of Sr, Nd, and Pb in pirssonite, shortite and calcite carbonatites from Oldoinyo Lengai volcano, Tanzania by Zaitsev, A. N., Keller, J., Billström, K.

“…The carbonatite-nephelinite-phonolite volcano Oldoinyo Lengai, located in the Gregory rift, which is part of the East-African rift system, is an important…”
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Relationship between 1.90-1.85 Ga accretionary processes and 1.82-1.80 Ga oblique subduction at the Karelian craton margin, Fennoscandian Shield by Weihed, Pär, Billström, K., Persson, P.-O., Weihed, J. Bergman

“…The three main intrusive suites: early calc-alkaline, late I/A-type, and late S-type intrusive rocks in relation to the Svecokarelian orogeny (1.9-1.8 Ga) have…”
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Geochemistry of the Upper Neoproterozoic and Lower Cambrian siliciclastic rocks and U-Pb dating on detrital zircons in the Central Iberian Zone, Spain by Ugidos, J. M., Billstr m, K., Valladares, M. I., Barba, P.

“…Sandstones and shales from the Upper Neoproterozoic (UN) succession in the Central Iberian Zone (CIZ) show parallel REE patterns and relatively restricted and…”
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Moving metals III: Possible origins for copper in Bronze Age Denmark based on lead isotopes and geochemistry by Melheim, L., Grandin, L., Persson, P.-O., Billström, K., Stos-Gale, Z., Ling, J., Williams, A., Angelini, I., Canovaro, C., Hjärthner-Holdar, E., Kristiansen, K.

“…This article presents the results of a comprehensive provenance study based on a combined geochemical-isotopic and archaeological approach, comprising 98…”
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The Lovisa stratiform Zn-Pb deposit, Bergslagen, Sweden; structure, stratigraphy, and ore genesis by Jansson, N. F, Sadbom, S, Allen, R. L, Billstrom, K, Spry, P. G

“…Medium- to high-grade metamorphosed, 1.9 Ga, stratiform, syngenetic Zn-Pb ± Ag sulfide deposits constitute an economically important type of ore deposit in the…”
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Conflicting zircon vs. titanite U-Pb age systematics and the deposition of the host volcanic sequence to Kiruna-type and IOCG deposits in northern Sweden, Fennoscandian shield by Billström, K., Evins, P., Martinsson, O., Jeon, H., Weihed, P.

“…•The Kiruna area is the key region for establishing a geochronology for Norrbotten.•The Kiruna area hosts huge apatite iron oxide ores of the Kiruna type.•The…”
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Ferrihydrite precipitation in groundwater-fed river systems (Nete and Demer river basins, Belgium): Insights from a combined Fe-Zn-Sr-Nd-Pb-isotope study by Dekov, V.M., Vanlierde, E., Billström, K., Garbe-Schönberg, C.-D., Weiss, D.J., Gatto Rotondo, G., Van Meel, K., Kuzmann, E., Fortin, D., Darchuk, L., Van Grieken, R.

“…Two groundwater-fed river systems (Nete and Demer, Belgium) carry red suspended material that settles on the river bed forming red sediments. The local aquifer…”
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Moving metals II: provenancing Scandinavian Bronze Age artefacts by lead isotope and elemental analyses by Ling, Johan, Stos-Gale, Zofia, Grandin, Lena, Billström, Kjell, Hjärthner-Holdar, Eva, Persson, Per-Olof

“…The first part of this research published previously proved without doubt that the metals dated to the Nordic Bronze Age found in Sweden were not smelted from…”
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Lead isotope systematics in the Långban deposit and adjacent sulphide mineralisations in western Bergslagen, Sweden by Jonsson, E., Billström, K.

“…The Långban mines and the investigated sulphide deposits are situated in the westernmost part of the Bergslagen ore province, where it borders the voluminous,…”
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The Medieval Metal Industry Was the Cradle of Modern Large-Scale Atmospheric Lead Pollution in Northern Europe by Brännvall, Maja-Lena, Bindler, Richard, Renberg, Ingemar, Emteryd, Ove, Bartnicki, Jerzy, Billström, Kjell

“…There is great concern for contamination of sensitive ecosystems in high latitudes by long-range transport of heavy metals and other pollutants derived from…”
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A lead isotope study of two sulphide deposits and adjacent igneous rocks in south-central Sweden by Billstr m, K.

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Source of metals and age constraints for epigenetic gold deposits in the Skellefte and Pohjanmaa districts, central part of the Fennoscandian Shield by SUNDBLAD, K, WEIHED, P, BILLSTRÖM, K, MARKKULA, H, MÄKELÄ, M

“…The lead isotopic compositions of galena in Early Proterozoic gold deposits have been determined for three districts in northern Sweden and central Finland…”
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Isotopic studies of Pb–Zn–(Ag) and barite Alpine vein deposits in the Iberian Range (NE Spain) by Subías, I., Fanlo, I., Mateo, E., Billström, K., Recio, C.

“…The Iberian Range contains abundant Pb–Zn–(Ag)– and Ba-dominated low temperature veins, mostly formed during the Mesozoic. The hydrothermal activity was…”
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Synvolcanic mixing of ore lead and the development of lead isotopic provinces in the Skellefte district, Sweden by Billstr m, K., Vivallo, W.

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Sulphur isotopes in Lower Proterozoic iron and sulphide ores in northern Sweden by Frietsch, R., Billstr m, K., Perdahl, J. A.

“…The present investigation deals with sulphur isotope distribution in Lower Proterozoic iron and sulphide mineralizations in northern Sweden. The contrasting…”
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160 Ma of magmatic/hydrothermal and metamorphic activity in the Gällivare area: Re–Os dating of molybdenite and U–Pb dating of titanite from the Aitik Cu–Au–Ag deposit, northern Sweden by Wanhainen, Christina, Billström, Kjell, Martinsson, Olof, Stein, Holly, Nordin, Roger

“…Host rocks to the Aitik Cu-Au-Ag deposit in northern Sweden are strongly altered and deformed Early Proterozoic mica(-amphibole) schists and gneisses. The…”
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