Blar i Artikler på forfatter "Siedlecka, Anna"
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Forekomster av tillitt på nordsiden av Atnsjøvinduet, Syd-Norge.
Ilebekk, S.; Siedlecka, Anna (NGU (373), Journal article, 1982)A previously reported tillite-like conglomerate occurring on the northern side of the Atnsjø Window rests with an erosional contact on Precambrian granite and gabbro and is overthrust by fieldspathic metasandstones of the ... -
Geology of the Båtsfjordfjellet drillcore, Varanger Peninsula, Finnmark, northern Norway
Siedlecka, Anna; Roberts, David (NGU Bulletin (452), Journal article, 2012)Logging of >800 metres of drillcore from a borehole on Båtsfjordfjellet, Varanger Peninsula, revealed a succession of very low-grade, metasedimentary rocks which are assigned to specific Neoproterozoic formations recognisable ... -
Geology of the eastern part of the Meråker area.
Siedlecka, Anna (NGU (245), Journal article, 1967)Within the mapped area slightly metamorphosed clastic sediments occur, probably of Upper Ordovician and Silurian age. The author describes a metagreywacke-slate association with metaconglomerates and gabbrodiorite sills, ... -
Geology of the Iesjav'ri-Skoganvarre area, Northern Finnmarksvidda, North Norway.
Siedlecka, Anna (NGU Bulletin (403), Journal article, 1985)The Iesjav'ri-Skoganvarre areas is located in the northern part ofFinnmarksvidda and its underlain by Archaean-Early Proterozoic rocks. Theoldest unit, the Jer'gul Gneiss Complex, is unconformably overlain bymetasediments ... -
Geology of the northernmost part of the Meråker area.
Siedlecka, Anna; Siedlecki, Stanislaw (NGU (245), Journal article, 1967)Four lithostratigraphical groups comprising sedimentary and igneous rocks have been distinguished in the mapped area. There are conformities and gradual transition between all these groups. The rocks have been subjected ... -
Late Precambrian sedimentary rocks of the Tanafjord-Varangerfjord region of Varanger peninsula, Northern Norway.
Siedlecka, Anna; Siedlecki, Stanislaw (NGU (269), Journal article, 1971)The late Precambrian Older Sandstone Series of Føyn (1937) underlies relatively large areas od the Tanafjord-Varangerfjord region of Varanger Peninsula (Siedlecka & Siedlecki, 1967). Geological mapping carried out by the ... -
Late Precambrian stratigraphy and structure of the north-eastern margin of the Fennoscandian shield (East-Finnmark - Timan Region).
Siedlecka, Anna (NGU (316), Journal article, 1975)Later Precambrian (Riphean and Vendian) rocks occur along the north-easternb margin of the Fennoscandian Shield and the Russian Platform in Three zones: 1) the Varanger-Kildin, 2) the Timan-Kanin and 3) the Southern Barents ... -
Lithostratigraphy and correlation of the Archean and Early Proterozoic rocks of Finnmarksvidda and Sørvaranger district.
Siedlecka, Anna; Krill, Allan; Iversen, Edvard (NGU Bulletin (403), Journal article, 1985)Archean and Early Proterozoic rocks of Finnmarksvidda and the SørvarangerDistrict are grouped into lithostratigraphic and lithodemic units aresystematically described. Some correlations are proposed and the foundationsfor ... -
Major element geochemistry of Neoproterozoic successions of Varanger Pensinsula, North Norway, and Sredni and Rybachi Peninsulas, North- west Kola, Russia: provenance patterns and basin evolution
Sochava, Andrei V.; Siedlecka, Anna (NGU Bulletin (432), Journal article, 1997)Major element analyses of 461 samples of Neoproterozoic sedimentary rocks were classified by using petrochemical plots and statistically treated in cluster analyses. In general, the studied siliciclastic rocks represent ... -
Neoproterozoic sedimentation on the Rybachi and Sredni Peninsulas and Kildin Island, NW Kola, Russia
Siedlecka, Anna (NGU Bulletin (427), Journal article, 1995)Frie emneord: Neoproterozoisk Korrelasjon -
Planktonic, acid-resistant microfossils from Upper Proterozoic strata of the Barents Sea Region of Varanger Peninsula, East Finnmark, Northern Norway.
Vidal, Gonzalo; Siedlecka, Anna (NGU (382), Journal article, 1983)Planktonic, acid-resistent microfossils (acritarchs) occur in the Kongsfjord, Båsnæring and Båtsfjord Formations of the Barents Sea Group and in the Styret Formation of the Løkvikfjell Group. Two new taxa are described and ... -
Provenance and sediment routing of Neoproterozoic formations on the Varanger, Nordkinn, Rybachi and Sredni peninsulas, North Norway and Northwest Russia: a review
Roberts, David; Siedlecka, Anna (NGU Bulletin (452), Journal article, 2012)Provenances and sediment routing of Neoproterozoic, mainly low-grade, sedimentary successions on four large peninsulas in Northeast Norway (Varanger and Nordkinn) and Northwest Russia (Rybachi and Sredni) have been assessed ... -
Some new aspects of the geology of Varanger peninsula (Northern Norway). Preliminary report.
Siedlecka, Anna; Siedlecki, Stanislaw (NGU (247), Journal article, 1967)The authors have established that Varanger Peninsula consists of two different geological regions divided from each other by a large thrus fault trending in NW-SE direction. The south-western, Tanafjord-Varangerfjord region, ...