Institution
Geological Survey of Sweden
Government•Uppsala, Sweden•
About: Geological Survey of Sweden is a government organization based out in Uppsala, Sweden. It is known for research contribution in the topics: Metamorphism & Zircon. The organization has 316 authors who have published 671 publications receiving 18333 citations. The organization is also known as: Sveriges Geologiska Undersökning.
Topics: Metamorphism, Zircon, Bedrock, Ice sheet, Glacial period
Papers published on a yearly basis
Papers
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TL;DR: In this article, detrital zircon signatures provided evidence of the change in character of the Baltoscandian crystalline basement, from the characteristic Late Palaeoproterozoic granites of the Transscandinavian Igneous Belt (TIB, c. 1650-1850 Ma) in the foreland Autochthon to the typical, mainly MesoproTERozoic-age profile (c. 950-1700 Ma) of southwestern Scandinavia in the hinterland.
Abstract: In central parts of the Scandinavian Caledonides, detrital zircon signatures provide evidence of the change in character of the Baltoscandian crystalline basement, from the characteristic Late Palaeoproterozoic granites of the Transscandinavian Igneous Belt (TIB, c. 1650–1850 Ma) in the foreland Autochthon to the typical, mainly Mesoproterozoic-age profile (c. 950–1700 Ma) of the Sveconorwegian Orogen of southwestern Scandinavia in the hinterland. Late Ediacaran to Early Cambrian shallow-marine Vemdal quartzites of the Jamtlandian Nappes (Lower Allochthon) provide strong bimodal signatures with TIB (1700–1800 Ma) and Sveconorwegian, sensu stricto (900–1150 Ma) ages dominant. Mid-Ordovician turbidites (Norraker Formation) of the Lower Allochthon in Sweden, sourced from the west, have unimodal signatures dominated by Sveconorwegian ages with peaks at 1000–1100 Ma, but with subordinate components of older Mesoproterozoic zircons (1200–1650 Ma). Latest Ordovician shallow-marine quartzites also yield bimodal signatures, but are more dispersed than in the Vemdal quartzites. In the greenschist facies lower parts of the Middle Allochthon, the Fuda (Offerdal Nappe) and Sarv Nappe signatures are either unimodal or bimodal (950–1100 and/or 1700–1850 Ma), with variable dominance of the younger or older group, and subordinate other Mesoproterozoic components. In the overlying, amphibolite to eclogite facies lower part of the Seve Nappe Complex, where the metasediments are dominated by feldspathic quartzites, calcsilicate-rich psammites and marbles, most units have bimodal signatures similar to the Sarv Nappes, but more dispersed; one has a unimodal signature very similar to the Ordovician turbidites of the Jamtlandian Nappes. In the overlying Upper Allochthon, Lower Koli (Baltica-proximal, Virisen Terrane), Late Ordovician quartzites provide unimodal signatures dominated by Sveconorwegian ages (sensu stricto). Further north in the Scandes, previously published zircon signatures in quartzites of the Lower Allochthon are similar to the Vemdal quartzites in Jamtland. Data from the Kalak Nappes at 70°N are in no way exotic to the Sveconorwegian Baltoscandian margin. They do show a Timanian influence (ages of c. 560–610 Ma), as would be expected from the palinspastic reconstructions of the nappes. Thus the detrital zircon signatures reported here and published elsewhere provide supporting evidence for a continuation northwards of the Sveconorwegian Orogen in the Neoproterozoic, from type areas in the south, along the Baltoscandian margin of Baltica into the high Arctic.
69 citations
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TL;DR: In this article, the petrography and geochemistry of two subsurface occurrences of pervasively albitized and episyenitized (i.e., dequartzified) granite in the central part of the postkinematic Sveconorwegian Bohus granite, in southwestern Sweden, were studied.
69 citations
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TL;DR: In this article, ground water exploration using combined controlled source and radiomagnetotelluric techniques is described using a combination of radiomagnetic net-to-everything (RNT) techniques.
Abstract: Ground water exploration using combined controlled source and radiomagnetotelluric techniques
69 citations
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TL;DR: In this paper, the authors used factor analysis and two modeling methods of geochemical anomalies, sample catchment basin and contour map to recognize significant geochemical signatures of the deposit-type sought and evaluate the anomaly mapping methods, adapted prediction-area (P-A) plot, normalized density, and success rate curve.
68 citations
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TL;DR: In this paper, a new geophysical method in impact crater studies, the in situ measurement of electrical resistivity, is introduced and illustrated with case studies from simple and complex craters.
67 citations
Authors
Showing all 316 results
Name | H-index | Papers | Citations |
---|---|---|---|
David G. Gee | 40 | 128 | 5688 |
Stefan Bergman | 31 | 166 | 5801 |
Frank T. Manheim | 30 | 85 | 3263 |
Laust B. Pedersen | 30 | 123 | 3193 |
Karna Lidmar-Bergström | 27 | 40 | 2007 |
Eva-Lena Tullborg | 26 | 82 | 1756 |
Stefan Lüth | 25 | 93 | 1925 |
Charlotte Möller | 25 | 62 | 2106 |
Pär Weihed | 25 | 102 | 2119 |
Ingemar Cato | 21 | 27 | 1264 |
Michael B. Stephens | 21 | 67 | 1652 |
Lovisa Zillén | 20 | 26 | 2182 |
Mehrdad Bastani | 20 | 65 | 1036 |
Martiya Sadeghi | 20 | 54 | 1387 |
Jenny Andersson | 18 | 37 | 1198 |