摘要:

The Mälar Sandstone in the Granholmen-—Vargholmen area is an arkose with 20–25 % feldspars and minor admixtures of sericite matrix, rock fragments, and accessory minerals. The petrology suggests that Jotnian igneous activity was an agent in sandstone cementation. Solutions emanating from dolerites supplied mainly iron, calcium, and silica, resulting in the formation of chlorite, calcite, epidote, laumontite, prehnite, and cryptocrystalline quartz cements in the sandstone dikes in dolerite and in the sandstones vicinal to basic igneous bodies. The relations between dolerite and sandstone on Granholmen and Vargholmen islands show that sandstone-filled cracks in the dolerite were produced by >intrusions> of detritus mush into contraction and dislocation fissures and not by normal sand sedimentation. Previous to the dolerite intrusion the sandstone had suffered some compaction, but little silica cementation. Evidence is not sufficient to decide whether the dolerite is a sill intruded between any particular lithological units of the sandstone series.

ISSN:0016-786X    

DOI:10.1080/11035896209449208

出版商:Taylor & Francis Group    

年代:1962

数据来源: Taylor

摘要:

This paper presents a first report on current studies on the fens of the Alvar plain of southern Öland. The morphological situation and the basin morphology of the fen of Dröstorps Mose are described (see Maps and Figures). A first modern pollen diagram from an Alvar fen is presented, showing the main phases of the vegetational history of the Great Alvar. After a period of open land from Early Boreal Time (i. e. oldest sediments present) until the later part of the Boreal, there has been a period of denser woodland, obviously covering considerable parts of the present Alvar, lasting until the later part of the Subboreal. The beginning of the new period of open land still lasting is connected with the appearance of cultural, largely agricultural, pollen. The most recent development, since the heavy grazing of the Alvars was discontinued some decades ago, shows tendencies towards reafforestation. The sedimentational history of the fen shows two major sedimentary cycles; strongly calcareous sediments, mainly lake marl, constitute the sequence up to Latest Boreal Time, overlain by detritic or peaty deposits representing the rest of the Late Quaternary.

ISSN:0016-786X    

DOI:10.1080/11035896209449209

出版商:Taylor & Francis Group    

年代:1962

数据来源: Taylor

摘要:

On periodicities in the intensity of the ice-rivers and sunspot cycles.

ISSN:0016-786X    

DOI:10.1080/11035896209449210

出版商:Taylor & Francis Group    

年代:1962

数据来源: Taylor

摘要:

Annual and inter-annual end moraines.

ISSN:0016-786X    

DOI:10.1080/11035896209449211

出版商:Taylor & Francis Group    

年代:1962

数据来源: Taylor

摘要:

The material here described includes 1.) A Plesiosaurian pubis (fig. 1) from the Lower Campanian at Önnestad, N. E. Scania. The bone is with great probability referable toScanisauruscf.nazarowi(Bogolubov 1911).— This specimen is the first known Reptile remnant from Önnestad. 2.) A Plesiosaurian humerus (fig. 2) from the Lower Campanian of the island of Ivö, N. E. Scania. 3.) An incomplete Plesiosaurian vertebral centrum, a fragment of another centrum, and a fragment of a limb bone, all from the Upper Campanian of Hanaskog, N. E. Scania. The limb bone fragment (fig. 3) is a part of the >shaft> of a very large propodial bone, possibly belonging toElasmosaurus?cf.gigas(Schröder 1885).— Plesiosaurian remains are rare in the Upper Campanian of Scania, and the bones here mentioned are the first ones known from Hanaskog. 4.) Mosasaurian tooth crown from the Upper Campanian of Hanaskog. The specimen is provisionally referred toLeiodonsp. 5.) A Plesiosaurian vertebral centrum from the glacial drift. Abbekås, S. Scania. — This specimen belongs to the old collection >Museum Nilssonianum> in the Palcontological Institute of Lund, and is therefore of a certain historical interest. 6.) Vertebral centra ofScanisaurussp. from the clay of Åsen, N. E. Scania. The centra are the first animal fossils recorded from this locality.

ISSN:0016-786X    

DOI:10.1080/11035896209449212

出版商:Taylor & Francis Group    

年代:1962

数据来源: Taylor

ISSN:0016-786X    

DOI:10.1080/11035896209449213

出版商:Taylor & Francis Group    

年代:1962

数据来源: Taylor

摘要:

The Inqua Congress in Poland 1961. A review of Quaternary research in Poland and the Congress sessions in Warsaw (C. G. Wenner).

ISSN:0016-786X    

DOI:10.1080/11035896209449214

出版商:Taylor & Francis Group    

年代:1962

数据来源: Taylor

ISSN:0016-786X    

DOI:10.1080/11035896209449215

出版商:Taylor & Francis Group    

年代:1962

数据来源: Taylor

ISSN:0016-786X    

DOI:10.1080/11035896209449216

出版商:Taylor & Francis Group    

年代:1962

数据来源: Taylor

ISSN:0016-786X    

DOI:10.1080/11035896209449217

出版商:Taylor & Francis Group    

年代:1962

数据来源: Taylor