Die Prinzipien einer quantitativen Klassifikation der Eruptivgesteine,insbesondere der jungen Ergußgesteine     

F. von Wolff 《International Journal of Earth Sciences》1922,13(1):9-17

Ohne Zusammenfassung  相似文献   

Zur Zonengliederung des variscischen Gebirges     

S. von Bubnoff 《International Journal of Earth Sciences》1932,23(6):289-300

Ohne Zusammenfassung  相似文献   

Ein magnetisches Profil durch Vorpommern     

S. von Bubnoff 《International Journal of Earth Sciences》1936,27(4):365-380

Zusammenfassung Ein auf Grund von Messungen von Prof.Schlomka und Dr.Schmücking konstruiertes Profil der magnetischen Vertikalintensität durch Vorpommern (Stahlbrode—Treptow a. d. Toll.) wird mit dem geologischen Profil verglichen. wobei eine gute überein-stimmung erzielt wird. Es bestätigt sich das vonSchuh und K.Richter schon entworfene Bild herzynischer Achsen, die von NO-streichenden Querstörungen (Peenetal) durchsetzt werden. Ein Vergleich mit dem westlich anschlie\enden Bereich derSchuh-schen Isanomalenkarte von Mecklenburg ergibt indessen eigenartige Abweichungen, deren mögliche Ursachen besprochen werden. Von drei Möglichkeiten entscheidet sich der Verfasser für die Wahrscheinlichkeit des Vorhandenseins stärker magnetisierbarer plattenförmiger Intrusivkörper im Unterbau, welche einseitig einfallen und daher an den Querstörungen horizontal versetzt erscheinen. Jedenfalls ergibt das die beste Deutung der Störungen zweiter Ordnung, während die Störungen dritter Ordnung auch andere Ursachen haben könnten.  相似文献   

Requiem     

Serge von Bubnoff 《International Journal of Earth Sciences》1953,41(1):1-6

Ohne Zusammenfassung  相似文献   

Fossile Landfaunen und das Atlantis-Problem     

F. von Huene 《International Journal of Earth Sciences》1938,30(1-2):86-88

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Habitat association of plaice, sole, and lemon sole in the English Channel   总被引：1，自引：0，他引：1  

Hinz  Hilmar; Bergmann  Melanie; Shucksmith  Richard; Kaiser  Michel J.; Rogers  Stuart I. 《ICES Journal of Marine Science》2006,63(5):912-927

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Toxicity of sea-surface microlayer: Effects of hexane extract on baltic herring (Clupea harengus) and atlantic cod (Gadus morhua) embryos     

R.M. Kocan  H. von Westernhagen  M.L. Landolt  G. Furstenberg 《Marine environmental research》1987,23(4)

This study was designed to determine whether contaminated sea-surface microlayer was toxic to marine fish embryos in its ntaive form and as a hexane extract. Developing embryos of Atlantic cod (Gadus morhua) and Baltic herring (Clupea harengus) were exposed to hexane extracts of sea-surface microlayer collected from five locations in the North Sea and Baltic Sea. Extracts from two of these locations produced significant embryos mortality as well as severe deformities in live hatched larvae. A control sample of bulk water collected from 20 cm under the surface and extracted in the same way produced no significant mortality or deformities. Significaant changes in timing of hatching were also observed in those samples which produced embryo toxic effects. A comparison of these data with those obtained from code embryos exposed to unextracted microlayer showed a similar biological effect with both unextracted samples and hexane extracts.Chemical analyses revealed the greatest biological effect in samples with petroleum hydrocarbon concentrations between 180 and > 200 μg liter⁻¹. The bulk water control had 1 μg liter⁻¹ while the three samples that showed no biological activity had 3 to 8 μg liter⁻¹ petroleum hydrocarbons. Phthalic acid esters were detected in four samples and chlorinated hydrocarbons in one, but could not be positively correlated with any of the toxic responses. No other chemical contaminants were detected in the five samples.The data presented here show that some sites contain sea-surface microlayer which can be toxic to marine fish embryos: that Baltic herring and Atlantic cod embryos respond similarly to the toxic effects of contaminated microlayer: and that unextracted microlayer and hexane extract of microlayer produce essentially the same toxic effect(s) if only organic contaminants are considered.  相似文献   

significance of benthic organisms for the growth and movement of manganese nodules,Equatorial North Pacific     

U. von Stackelberg 《Geo-Marine Letters》1984,3(1):37-42

Pronounced variations in slope topography and offshelf spillover have produced a three-fold difference (9 to 25 cm/1,000 yr) in Late Quaternary deposition rates among slope cores southeast of the Mid-Atlantic States. Upper rise cores revealed a high rate but lower core-to-core variability (20 to 44 cm/1,000 yr), largely the result of slope bypassing, i.e., effects of gravity-controlled downslope transport. A transport model suggests temporary slope sediment storage and higher accumulation of mud in more distal rise regions. Eustatic change accounts for the four-fold decrease in slope deposition rate between the Late Pleistocene and Holocene.  相似文献   

Life-history traits of the symbiotic scale-worm Branchipolynoe seepensis and its relationships with host mussels of the genus Bathymodiolus from hydrothermal vents     

Temir A. Britayev  Daniel Martin  Elena M. Krylova  Rudo von Cosel  & Tatiana S. Aksiuk 《Marine Ecology》2007,28(1):36-48

Associations between scale‐worms and giant mussels are common constituents of hydrothermal vent and cold seep ecosystems, but very little is known about their nature and ecology. Here, we analyze the ecological characteristics of the associations between Branchipolynoe seepensis, an obligate symbiotic polychaete, and their host mytilid mussels Bathymodiolus puteoserpentis and B. azoricus inhabiting hydrothermal vent fields on the Mid‐Atlantic Ridge. Infested mussels generally harbored a single symbiont (<4% had two to six worms). Infestation rate varied from 7.2% to 76.5%, increasing with mussel size, and was significantly lower for B. puteoserpentis. Symbiont density at Lucky Strike ranged between 1071 and 1191 individuals m⁻². Female symbiont size was always positively correlated with host size, while only males and juveniles from small mussels showed the same trend. This suggested a relatively long‐lasting host/symbiont association for females and short‐lasting association with successive reproductive migrations for adult males. The sex ratio of symbionts was always biased in favor of females. Males were smaller and more slender than females and had one mode in their size distributions, whereas females typically had three or more modes, suggestive of a longer life span in females. Between 59.1% and 72.2% of mussels had damaged soft tissues with substantially higher incidence of trauma in infested ones, suggesting that symbionts may cause trauma. The symbionts also induce tunnel‐like structures among the ctenidia, indicating fidelity to a particular location inside the host. Based on our data, together with the fact that infested mussels became relatively wider than non‐infested ones, this association is considered parasitic (likely kleptoparasitic). Our data, together with those from previous studies, allowed us to define the main life‐history traits of B. seepensis: (i) the relationship with their host is parasitic, (ii) the association begins at the smallest mytilid size classes, (iii) there is sexual dimorphism in body size, (iv) sex ratio deviates from 1:1 in favor of females, (v) fertilization occurs through temporal pairing and pseudocopulation, (vi) sperm are stored by females, (vii) eggs are large (likely lecithotrophic or with direct development), (viii) females have a longer life span than males, (ix) adult males may be semalparous, undertaking reproductive migrations followed by a short period of pairing and then death, and (x) females have a semi‐continuous iteroparous reproductive cycle.  相似文献   

Malformations in North Sea pelagic fish embryos during the period 1984-1995     

Dethlefsen  Volkert; von Westernhagen  Hein; Cameron  Patricia 《ICES Journal of Marine Science》1996,53(6):1024-1035

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