| 词条 | Central Skåne Volcanic Province |
| 释义 |
The Central Skåne Volcanic Province was a site of volcanic activity in the Scania region of Sweden during the Mesozoic Era of the Earth's geological history. The volcanism began with a first and main phase in late Sinemurian–Toarcian times. Then volcanism continued sporadically for another 80 million years.[1] More than one hundred volcanic necks of basaltic composition exist in Scania evidencing this volcanism. In central Scania, volcanism was in the form of a volcanic field of cinder cones that had strombolian eruption styles.[2] These cones produced tuffite deposits made largely of lapilli with rare volcanic bombs.[2][1] Pyroclastic materials were subsequently palagonitized or largely altered to clay minerals.[2] While eruptions occurred on land the sea was likely very close to the area.[2][1] Besides purely pyroclastic sediments, lahar deposits have also been identified around the remnants of the volcanoes.[8] Beneath a lahar deposit at Korsaröd, Early Jurassic plant fossils including wood, pollen and spores have been exceptionally well preserved.[3] The degree of preservation is such that cell-scale features like organelles and chromosomes have been identified in the fossils. At this location plants grew in a substrate with extensive hydrothermal alteration.[4] The volcanism is possibly the result of decompression melting of the lithospheric mantle beneath.[1] The volcanism is linked to a rift flank fault along the Sorgenfrei–Tornquist Zone, which is a failed rift associated with extension in the North Sea and the opening of the North Atlantic.[1][2][4] The background to the volcanism is the break-up of Pangea, and thus it is analogous to the much more voluminous Karoo-Ferrar flood basalts of Southern Africa.[5] See also
References1. ^1 {{cite journal |last=Ahlberg |first=Anders|last2=Sivhed |first2=Ulf|last3=Erlström |first3=Mikael |date=2003|title=The Jurassic of Skåne, southern Sweden |journal=Geological Survey of Denmark and Greenland Bulletin |url= |pages=527–541 |isbn= |author-link= }} {{coord missing|Sweden}}{{Geology of Fennoscandia}}{{DEFAULTSORT:Central Skane Volcanic Province}}2. ^1 2 3 4 {{cite journal |last1=Augustsson |first1=Carita |date=2001 |title=Lapilli tuff as evidence of Early Jurassic Strombolian-type volcanism in Scania, southern Sweden |journal=GFF |volume=123 |issue=1 |pages=23–28|doi=10.1080/11035890101231023 }} 3. ^{{cite journal | url=http://science.sciencemag.org/content/343/6177/1376.full | title=Fossilized Nuclei and Chromosomes Reveal 180 Million Years of Genomic Stasis in Royal Ferns | first=Benjamin | last=Bomfleur | first2=Stephen | last2=McLoughlin | first3=Vivi | last3=Vajda | journal=Science | year=2014 | volume=343 | issue=6177 | pages=1376–1377 | doi=10.1126/science.1249884| pmid=24653037 }} 4. ^1 2 {{cite book |last1=Vajda |first1=Vivi |last2=Linderson |first2=Hans|last3=McLoughlin |first3=Stephen |author-link1=Vivi Vajda |date=2016 |chapter=Disrupted vegetation as a response to Jurassic volcanism in southern Sweden |chapter-url=http://sp.lyellcollection.org/content/434/1/127.full |title=Mesozoic Biotas of Scandinavia and its Arctic Territories |editor-last=Kear |editor-first=B.P. |editor-last2=Lindgren |editor-first2=J. |editor-last3=Hurum |editor-first3=J.H. |editor-last4=Milàn |editor-first4=J. |editor-last5=Vajda |editor-first5=V.|series=Geological Society, London, Special Publications |volume=434 |issue= |pages=127–147 |doi= |access-date= }} 5. ^1 2 3 {{cite journal |last1=Bergelin |first1=Ingemar |date=2009 |title=Jurassic volcanism in Skåne, southern Sweden, and its relation to coeval regional and global events |journal=GFF |volume=131 |issue=1–2 |pages=165–175 |doi=10.1080/11035890902851278 }} 7 : Cretaceous volcanism|Cretaceous Europe|Jurassic volcanism|Jurassic Europe|Geology of Sweden|Scania|Landforms of Skåne County |
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