The »Bockholm conglomerate» – an intrusive breccia in Åland, SW Finland
Three breccias composed of a heterogeneous mixture of rock fragments in a clastic matrix have been studied in the Enklinge area, southwestern Finland. One of them is the »Bockholm conglomerate», by Sederholm considered as a basal conglomerate for the Bothnian formation. The breccias intrude into the...
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| Language: | English |
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Geological Society of Finland
1979-12-01
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| Series: | Bulletin of the Geological Society of Finland |
| Online Access: | http://www.geologinenseura.fi/bulletin/Volume51/sgs_bt_051_pages_017_025.pdf |
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doaj-64b2a0a15c694af1b0ae5f4ee9c785e62020-11-24T22:05:07ZengGeological Society of FinlandBulletin of the Geological Society of Finland0367-52111799-46321979-12-01511-2172510.17741/bgsf/51.1-2.003The »Bockholm conglomerate» – an intrusive breccia in Åland, SW FinlandC. EhlersThree breccias composed of a heterogeneous mixture of rock fragments in a clastic matrix have been studied in the Enklinge area, southwestern Finland. One of them is the »Bockholm conglomerate», by Sederholm considered as a basal conglomerate for the Bothnian formation. The breccias intrude into the surrounding Svecofennian volcanics and tonalites. Minor intrusions of quartz porphyry and plagioclase porphyry accompany the breccias. On Bockholm the breccia and the porphyry are weakly mineralized by chalcopyrite and arsenopyrite. It is proposed that the breccias form small intrusive pipes connected to, but younger than, the intrusion of the tonalites. http://www.geologinenseura.fi/bulletin/Volume51/sgs_bt_051_pages_017_025.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
C. Ehlers |
| spellingShingle |
C. Ehlers The »Bockholm conglomerate» – an intrusive breccia in Åland, SW Finland Bulletin of the Geological Society of Finland |
| author_facet |
C. Ehlers |
| author_sort |
C. Ehlers |
| title |
The »Bockholm conglomerate» – an intrusive breccia in Åland, SW Finland |
| title_short |
The »Bockholm conglomerate» – an intrusive breccia in Åland, SW Finland |
| title_full |
The »Bockholm conglomerate» – an intrusive breccia in Åland, SW Finland |
| title_fullStr |
The »Bockholm conglomerate» – an intrusive breccia in Åland, SW Finland |
| title_full_unstemmed |
The »Bockholm conglomerate» – an intrusive breccia in Åland, SW Finland |
| title_sort |
»bockholm conglomerate» – an intrusive breccia in åland, sw finland |
| publisher |
Geological Society of Finland |
| series |
Bulletin of the Geological Society of Finland |
| issn |
0367-5211 1799-4632 |
| publishDate |
1979-12-01 |
| description |
Three breccias composed of a heterogeneous mixture of rock fragments in a clastic matrix have been studied in the Enklinge area, southwestern Finland. One of them is the »Bockholm conglomerate», by Sederholm considered as a basal conglomerate for the Bothnian formation. The breccias intrude into the surrounding Svecofennian volcanics and tonalites. Minor intrusions of quartz porphyry and plagioclase porphyry accompany the breccias. On Bockholm the breccia and the porphyry are weakly mineralized by chalcopyrite and arsenopyrite. It is proposed that the breccias form small intrusive pipes connected to, but younger than, the intrusion of the tonalites.
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| url |
http://www.geologinenseura.fi/bulletin/Volume51/sgs_bt_051_pages_017_025.pdf |
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AT cehlers thebockholmconglomerateanintrusivebrecciainalandswfinland AT cehlers bockholmconglomerateanintrusivebrecciainalandswfinland |
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