摘要:

Xenusion auerswaldaePompeckj 1927 is refigured and redescribed. Some details which have hitherto been neglected or incorrectly interpreted are discussed. It is shown that each of its paired, hump-like protuberances was provided with a spine or papilla. This fact, as well as the relative size and apparent rigidity of the humps, disproves the earlier interpretations of these details as ventral (coxal) sacs. The specimen described by Pompeckj is a cast of the dorsal side of the fossil.Xenusionwas an almost homonomously metameric animal with appendages similar to onychophoran lobopodia; the fossilized characters known hitherto permit no more exact classification thanincertae sedisamong the Articulata. Red-striped quartzites in the lowermost Cambrian of the Kalmarsund area in SE Sweden are the only rocks which may now be considered as the source of the drift boulders containing the two specimens ofXenusionfound hitherto.

ISSN:0016-786X    

DOI:10.1080/11035896709455501

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

The morphology and ontogeny ofCoelostylis toernquisti(Lindström 1873) are described on the basis of material from the Middle Ordovician (Viruan) Macrourus Beds of Sweden. The generic characters of the genusGoelostylisLindström 1880 and the taxonomic position of this genus are discussed.

ISSN:0016-786X    

DOI:10.1080/11035896709455502

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

Silenis bassleri(Sohn), andKuresaaria gotlandicagen. et sp. n., studied in the present paper are from the Silurian of Gotland. Both belong to the Metacopa for which an emended diagnosis is given and phylogenetic relations of which are discussed. The shape of carapace and the morphology of valves of the described forms suggest that they probably represent two trends of development among Metacopa: respectively thlipsurean and healdiacean.

ISSN:0016-786X    

DOI:10.1080/11035896709455503

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

Ragnar Sandegren (1887–1966) was a member of the Geological Society of Sweden since 1910, its Secretary 1926–1937 and 1952–1954. He was the editor of the GFF during the same periods and in 1955–1957 and was one of the holders of those two Plaquettes of Merit which the Society has awarded hitherto. This paper contains a biography of Sandegren as a peat geologist at the Geological Survey, a mapping state geologist, and the leading biographer in the field of Swedish geology. A bibliography of Sandegren's publications is added.

ISSN:0016-786X    

DOI:10.1080/11035896709455504

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

In connection with investigations of horizons with volcanic ash in Swedish peat-bogs (C. Persson 1966) three Icelandic dacitic to rhyodacitic ash layers have been investigated. These are Askja 1875 A.D., Hekla III about 870 B.C., and Hekla IV about 1880 B.C. Information from the literature is compiled, and some new chemical analyses given. Some trace elements studies have been made and the refractive index of the glass determined. Pumice from Askja 1875 A.D. was studied in thin section. Particle size in relation to distance from the volcano was examined. The chemical analyses show that the volcanic glass changes composition with increasing age forming hydrous aluminosilicates such as kaolinite and sericite.

ISSN:0016-786X    

DOI:10.1080/11035896709455505

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

The problems relative to the old Baltic shorelines are not only of a general geologic concern — they are also, since thehistoryof the Baltic Sea is involved, of great stratigraphical significance. Furthermore, since they are a matter of discussion in one of the classic regions of Holocene stratigraphy, all new evidence and determinations are particularly important for any stratigraphic subdivisions elaborated in every other region, especially if not situated far from the Baltic. Therefore, the attention of the students of Baltic shorelines should be directed towards the international bio- and lithostratigraphical as well as towards the geochronological discussion.

ISSN:0016-786X    

DOI:10.1080/11035896709455506

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

ISSN:0016-786X    

DOI:10.1080/11035896709455507

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

A compilation of different gravity measurements over the Bohus granite is presented. The negative Bouguer anomaly of 18 mgals over the granite is interpreted as being caused by the low density of the granite compared to the country rocks. A density contrast of 0.07 g/cm3has been used to calculate the shape and thickness (or density contrast) of the granite. A calculated model and the derived geological model are shown.

ISSN:0016-786X    

DOI:10.1080/11035896709455508

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

Some new C14-datings have been made on horizons with volcanic ash in Swedish peat-bogs. The new datings have been made on material pretreated with 2% NaOH.

ISSN:0016-786X    

DOI:10.1080/11035896709455509

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

ISSN:0016-786X    

DOI:10.1080/11035896709455510

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor