| 1. |
- Adcox, K, et al.
(författare)
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PHENIX detector overview
- 2003
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - 0167-5087. ; 499:2-3, s. 469-479
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Tidskriftsartikel (refereegranskat)abstract
- The PHENIX detector is designed to perform a broad study of A-A, p-A, and p-p collisions to investigate nuclear matter under extreme conditions. A wide variety of probes, sensitive to all timescales, are used to study systematic variations with species and energy as well as to measure the spin structure of the nucleon. Designing for the needs of the heavy-ion and polarized-proton programs has produced a detector with unparalleled capabilities. PHENIX measures electron and muon pairs, photons, and hadrons with excellent energy and momentum resolution. The detector consists of a large number of subsystems that are discussed in other papers in this volume. The overall design parameters of the detector are presented. (C) 2002 Elsevier Science B.V. All rights reserved.
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| 2. |
- Andréasson, Per-Gunnar, et al.
(författare)
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Subduction-flip during Iapetus Ocean closure and Baltica-Laurentia collision, Scandinavian Caledonides
- 2003
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Ingår i: Terra Nova: the European journal of geosciences. - : Wiley. - 0954-4879. ; 15:6, s. 362-369
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Tidskriftsartikel (refereegranskat)abstract
- Evidence is presented here from the northern Scandinavian Caledonides for development of an extensional basin of Ashgill to Mid Llandovery age along the Baltoscandian margin immediately prior to Baltica-Laurentia collision. U/Pb multigrain and ion microprobe zircon dating of plagiogranites in the Halti Igneous Complex complement previous baddeleyite and zircon dating of a dolerite dyke, and zircon dating of anatectic granite; they demonstrate that this dunite, troctolite, gabbro, sheeted-dyke complex ranges in age from c. 445 to 435 Ma. The dolerite dykes intruded and melted arkoses of inferred Neoproterozoic age. This evidence, taken together with previous documentation of ophiolites (Solund-Stavfjord), ophiolite-like associations (Sulitjelma Igneous Complex) and several other mafic suites (e.g. Rana, Artfjallet) of Ashgill to Llandovery age further south in the northern Scandinavian Caledonides, implies that Scandian collisional orogeny along this nearly 2000-km-long mountain belt was immediately preceeded by development of short-lived marginal basins. The latter developed during the final closure of the Iapetus Ocean and are inferred to be of back-arc origin, some (perhaps all) related to E-dipping subduction. Collision of the continents at c. 435 Ma is inferred to have induced a flip in subduction polarity, leading to underthrusting of Laurentia by Baltica.
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| 5. |
- CARLSSON, P, et al.
(författare)
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GEOCHEMISTRY OF THE PALAEOPROTEROZOIC BANGENHUK GRANITOIDS, NY FRIESLAND, SVALBARD
- 1995
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Ingår i: GFF. - : SWEDISH SCIENCE PRESS. - 1103-5897. ; 117, s. 107-119
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Old Red Sandstones and younger strata overlie a variety of Early Palaeozoic and Precambrian rocks on Svalbard, referred to as the Hecla Hoek Complex, which were deformed and metamorphosed during the Caledonian orogeny. At least three different Caledonian
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