1. |
The Riphcan of the Red Sea Area |
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Geologiska Föreningen i Stockholm Förhandlingar,
Volume 83,
Issue 2,
1961,
Page 109-128
H.M. E. Schürmann,
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摘要:
The author compares the young Pre-Cambrian rocks of the Red Sea area. On the basis of paleontological and radioactive age-determinations he comes to the conclusion that in this area the rocks belong to the youngest consolidated rim (abt. 600 m.y.) of the old African cratonic shield (abt. 3 000 m.y.), equal to the Riphean (Schatsky). Two geosynclines or two parts of one geosyncline with plenty of basic volcanics, pillow lavas and serpentines have been mapped by Glen Brown in western Saudi Arabia (250 km length) and by the Geological Survey of Egypt in the central part of the Eastern Desert (100 km length). In Saudi Arabia the young Pre-Cambrian section is over 20 km thick and in the central part of the Eastern Desert of Egypt about 12 km. There is a change in facies from submarine ophiolites in the trough to partly subaerial volcanics on the block-faulted rim of the trough. The sedimentary section is mainly pelitic and psammatic. Limestone (marble) is rare or absent. The tectonic trends are probably influenced by older highs. In the northern part of the area the general trend is often across the Gulf of Suez. In the central and southern part of the Red Sea a strike roughly N—S predominates, but some E—W trends occur too, as in Hadramaut, Eritrea and Eastern Somaliland.
ISSN:0016-786X
DOI:10.1080/11035896109449592
出版商:Taylor & Francis Group
年代:1961
数据来源: Taylor
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2. |
Uranium Mineralization in a Skarn Iron Ore at Håkantorp, County of Örebro, Sweden |
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Geologiska Föreningen i Stockholm Förhandlingar,
Volume 83,
Issue 2,
1961,
Page 129-143
Eric Welin,
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摘要:
At Håkantorp in the County of Örebro in Central Sweden a strongly metamorphosed and folded Archean serie of supracrustal rocks contains small skarn iron ores. In a few ore-bodies uraninite disseminations occur along shear zones. The precipitation of uraninite is caused by the reducing action of the ferrous iron content in tremolite and magnetite on acid uranium-bearing ore solutions. Geological and mineralogical evidence as well as age determinations indicate that the mineralization is connected with the end of the palingenic phase which drew the Svecofennian orogeny to a close.
ISSN:0016-786X
DOI:10.1080/11035896109449593
出版商:Taylor & Francis Group
年代:1961
数据来源: Taylor
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3. |
An Interstadial (Radiocarbon Dated) and the Substages of the Last Glaciation in Sweden |
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Geologiska Föreningen i Stockholm Förhandlingar,
Volume 83,
Issue 2,
1961,
Page 144-150
F. Brotzen,
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ISSN:0016-786X
DOI:10.1080/11035896109449594
出版商:Taylor & Francis Group
年代:1961
数据来源: Taylor
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4. |
The Content of13C in the Graphite-Bearing Magnetite Ores and Associated Carbonate Rocks in the Norberg Mining District, Central Sweden |
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Geologiska Föreningen i Stockholm Förhandlingar,
Volume 83,
Issue 2,
1961,
Page 151-156
Sture Landergren,
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摘要:
A brief presentation of the isotopic composition of carbon in the graphite-bearing iron ores associated with limestone in the Norberg mining district, central Sweden.
ISSN:0016-786X
DOI:10.1080/11035896109449595
出版商:Taylor & Francis Group
年代:1961
数据来源: Taylor
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5. |
Sandsten och kvartsit med flusspatcementerade kvartssfäroider |
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Geologiska Föreningen i Stockholm Förhandlingar,
Volume 83,
Issue 2,
1961,
Page 157-161
Percy Quensel,
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摘要:
Sandstone and quartzite with fluorspar cement
ISSN:0016-786X
DOI:10.1080/11035896109449596
出版商:Taylor & Francis Group
年代:1961
数据来源: Taylor
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6. |
Periglaciala dalar i sydligaste Sverige(Periglacial Valleys in Southernmost Sweden) |
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Geologiska Föreningen i Stockholm Förhandlingar,
Volume 83,
Issue 2,
1961,
Page 162-185
Gunnar Johnsson,
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ISSN:0016-786X
DOI:10.1080/11035896109449597
出版商:Taylor & Francis Group
年代:1961
数据来源: Taylor
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7. |
Geologin och det radioaktiva avfallet |
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Geologiska Föreningen i Stockholm Förhandlingar,
Volume 83,
Issue 2,
1961,
Page 186-191
Helge Tullström,
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摘要:
Title: Geology and the radioactive waste. A congress report
ISSN:0016-786X
DOI:10.1080/11035896109449598
出版商:Taylor & Francis Group
年代:1961
数据来源: Taylor
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8. |
Fjällrandens byggnad i sydligaste delen av Lappland |
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Geologiska Föreningen i Stockholm Förhandlingar,
Volume 83,
Issue 2,
1961,
Page 192-197
Oskar Kulling,
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摘要:
The Border Zone of the Caledonian Mountains in Southernmost Swedish Lapland
ISSN:0016-786X
DOI:10.1080/11035896109449599
出版商:Taylor & Francis Group
年代:1961
数据来源: Taylor
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9. |
Ignimbritbegreppet |
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Geologiska Föreningen i Stockholm Förhandlingar,
Volume 83,
Issue 2,
1961,
Page 198-203
Sven Hjelmqvist,
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摘要:
In a recent paper the New Zealandish geologist A. Steiner has made a redefinition of ignimbrite as a descriptive non-genetic term meaning an acid volcanic rock showing gradational, vitroclastic-like textures and characterized by the presence of two contrasting glasses, which are usually devitrified. In indicating the significance of liquid immiscibility in forming of ignimbrites he emphasizes that according to the widespread occurrence of ignimbrites liquid immiscibility is an important phenomenon of igneous petrogenesis.
ISSN:0016-786X
DOI:10.1080/11035896109449600
出版商:Taylor & Francis Group
年代:1961
数据来源: Taylor
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10. |
Tillströmningen av geologistuderande till universiteten 1959 och 1960 |
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Geologiska Föreningen i Stockholm Förhandlingar,
Volume 83,
Issue 2,
1961,
Page 204-206
Anders Martinsson,
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ISSN:0016-786X
DOI:10.1080/11035896109449601
出版商:Taylor & Francis Group
年代:1961
数据来源: Taylor
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