Lower Tertiary volcanic rocks off Kristiansund — Mid Norway     

Tom Bugge  Tore Prestvik  Kåre Rokoengen 《Marine Geology》1980,35(4):277-286

Grab samples from the Norwegian continental shelf show that diapiric structures occurring within a sequence of Mesozoic and Tertiary sediments represent volcanic rocks consisting of porphyritic olivine-nephelinite. The KAr age of 55.7 ± 0.9 m.y. shows that the area affected by Lower Tertiary magmatism in the North Atlantic region also included the continental shelf off Mid Norway. The highly undersaturated nature of these volcanic rocks, however, indicates that they are unlikely to be closely related to the widespread tuff horizons of the same age known from the North Sea.  相似文献   

Trends in age-composition, growth and reproductive parameters of Barents Sea harp seals, Phoca groenlandica     

Kjellqwist  Sten Anders; Haug  Tore; Oritsland  Torger 《ICES Journal of Marine Science》1995,52(2):197-208

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The wadic project: A comprehensive field evaluation of directional wave instrumentation   总被引：1，自引：0，他引：1  

J. Allender  T. Audunson  S. F. Barstow  S. Bjerken  H. E. Krogstad  P. Steinbakke  L. Vartdal  L. E. Borgman  C. Graham   《Ocean Engineering》1989,16(5-6)

The results of a comprehensive field trial of nearly all commercially available directional wave measurement systems at the Edda field in the North Sea during winter 1985-86 are presented. The results summarize the accuracy of the principal engineering wave parameters from each system and the dependence on sea state. Limiting factors on system performance and operational problems are also included in the assessment. Overall experience has been good with systems utilizing widely different measurement principles returning consistent results.  相似文献   

A Gamma/Dirichlet model for estimating uncertainty in age-specific abundance of Norwegian spring-spawning herring     

Host  Gudmund; Berg  Erlend; Schweder  Tore; Tjelmeland  Sigurd 《ICES Journal of Marine Science》2002,59(4):737-748

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Spawning season of the Atlantic halibut (Hippoglossus hippoglossus) in northern Norway     

Kjorsvik  Elin; Haug  Tore; Tjemsland  Jonas 《ICES Journal of Marine Science》1987,43(3):285-293

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Spring diet of ringed seals (Phoca hispida) from northwestern Spitsbergen, Norway     

Labansen  Aili L.; Lydersen  Christian; Haug  Tore; Kovacs  Kit M. 《ICES Journal of Marine Science》2007,64(6):1246-1256

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Harp seal (Phoca groenlandica) invasions in Norwegian coastal waters: age composition and feeding habits     

Haug  Tore; Kroyer  Ari B.; Nilssen  Kjell T.; Ugland  Karl I.; Aspholm  Paul E. 《ICES Journal of Marine Science》1991,48(3):363-371

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Seismic analyses of Cenozoic contourite drift development in the Northern Norwegian Sea   总被引：1，自引：0，他引：1  

Laberg  Jan Sverre  Dahlgren  Torbjørn  Vorren  Tore O.  Haflidason  Haflidi  Bryn  Petter 《Marine Geophysical Researches》2001,22(5-6):401-416

Four drift accumulations have been identified on the continental margin of northern Norway; the Lofoten Drift, the Vesterålen Drift, the Nyk Drift and the Sklinnadjupet Drift. Based on seismic character these drifts were found to belong to two main groups; (1) mounded, elongated, upslope accretion drifts (Lofoten Drift, Vesterålen Drift and Nyk Drift), and (2) infilling drifts (Sklinnadjupet Drift). The drifts are located on the continental slope. Mainly surface and intermediate water circulation, contrary to many North Atlantic and Antarctic drifts that are related to bottom water circulation, and sediment availability have controlled their growth. Sediments were derived both from winnowing of the shelf and upper slope and from ice sheets when present on the shelf. The main source area was the Vøring margin. This explains the high maximum average sedimentation rate of the nearby Nyk (1.2 m/ka) and Sklinnadjupet (0.5 m/ka) Drifts compared with the distal Lofoten (0.036 m/ka) and Vesterålen (0.060 m/ka) Drifts. The high sedimentation rate of the Nyk Drift, deposited during the period between the late Saalian and the late Weichselian is of the same order of magnitude as previously reported for glacigenic slope sediments deposited during glacial maximum periods only. The Sklinnadjupet Drift is infilling a paleo-slide scar. The development of the infilling drift was possible due to the available accommodation space, a slide scar acting as a sediment trap. Based on the formation of diapirs originating from the Sklinnadjupet Drift sediments we infer these sediments to have a muddy composition with relatively high water content and low density, more easily liquefied and mobilised compared with the glacigenic diamictons.  相似文献   

Food habits of harp seals (Phoca groenlandica) during lactation and moult in March-May in the southern Barents Sea and White Sea   总被引：1，自引：0，他引：1  

Nilssen  Kjell T.; Haug  Tore; Potelov  Vladimir; Stasenkov  Vladimir A.; Timoshenko  Yuri K. 《ICES Journal of Marine Science》1995,52(1):33-41

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Nature of the crust in Maine,USA: evidence from the Sebago batholith   总被引：7，自引：0，他引：7  

P. B. Tomascak  Eirik J. Krogstad  Richard J. Walker 《Contributions to Mineralogy and Petrology》1996,125(1):45-59

 Neodymium and lead isotope and elemental data are presented for the Sebago batholith (293±2 Ma), the largest exposed granite in New England. The batholith is lithologically homogeneous, yet internally heterogeneous with respect to rare earth elements (REE) and Nd isotopic composition. Two-mica granites in the southern/central portion of the batholith (group 1) are characterized by REE patterns with uniform shapes [Ce_N/Yb_N (chondrite normalized) = 9.4–19 and Eu/Eu* (Eu anomaly) = 0.27–0.42] and ɛ _Nd(t) = −3.1 to −2.1. Peripheral two-mica granites (group 2), spatially associated with stromatic and schlieric migmatites, have a wider range of total REE contents and patterns with variable shapes (Ce_N/Yb_N = 6.1–67, Eu/Eu* = 0.20–0.46) and ɛ _Nd(t) = −5.6 to −2.8. The heterogeneous REE character of the group 2 granites records the effects of magmatic differentiation that involved monazite. Coarse-grained leucogranites and aplites have kinked REE patterns and low total REE, but have Nd isotope systematics similar to group 2 granites with ɛ _Nd(t) = −5.5 to −4.7. Rare biotite granites have steep REE patterns (Ce_N/Yb_N = 51–61, Eu/Eu* = 0.32–0.84) and ɛ _Nd(t) = −4.6 to −3.8. The two-mica granites have a restricted range in initial Pb isotopic composition (²⁰⁶Pb/²⁰⁴Pb = 18.41–18.75; ²⁰⁷Pb/²⁰⁴Pb = 15.60–15.68; ²⁰⁸Pb/²⁰⁴Pb = 38.21–38.55), requiring and old, high U/Pb (but not Th/U) source component. The Nd isotope data are consistent with magma derivation from two sources: Avalon-like crust (ɛ _Nd>−3), and Central Maine Belt metasedimentary rocks (ɛ _Nd<−4), without material input from the mantle. The variations in isotope systematics and REE patterns are inconsistent with models of disequilibrium melting which involved monazite. Received: 8 December 1995 / Accepted: 29 April 1996  相似文献