About: Sorthat Formation

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The Sorthat Formation is a geologic formation on the island of Bornholm, Denmark and in the in the Baltic Sea. It is of Latest Pliensbachian to Late Toarcian age. Plant fossils have been recovered from the formation, along with several traces of invertebrate animals. The Sorthat Formation is overlain by fluvial to lacustrine gravels, along with sands, clay and in some places coal beds that are part of the Aalenian-Bathonian Bagå Formation. Until 2003, the Sorthat Formation was included as the lowermost part of the Bagå Formation, recovering the latest Pliensbachian to lower Aalenian boundary. The Sorthat strata reflect a mostly marginally deltaic to marine unit. Large streams fluctuated to the east, where a large river system was established at the start of the Toarcian. In the northwest,

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  • The Sorthat Formation is a geologic formation on the island of Bornholm, Denmark and in the in the Baltic Sea. It is of Latest Pliensbachian to Late Toarcian age. Plant fossils have been recovered from the formation, along with several traces of invertebrate animals. The Sorthat Formation is overlain by fluvial to lacustrine gravels, along with sands, clay and in some places coal beds that are part of the Aalenian-Bathonian Bagå Formation. Until 2003, the Sorthat Formation was included as the lowermost part of the Bagå Formation, recovering the latest Pliensbachian to lower Aalenian boundary. The Sorthat strata reflect a mostly marginally deltaic to marine unit. Large streams fluctuated to the east, where a large river system was established at the start of the Toarcian. In the northwest, local volcanism that started in the lower Pliensbachian extended along the North Sea, mostly from southern Sweden. At this time, the Central Skåne Volcanic Province and the expelled most of their material, with influences on the local tectonics. The Egersund Basin has abundant fresh porphyritic nephelinite lavas and dykes of lower Jurassic age, with a composition nearly identical to those found in the clay pits. That indicates the transport of strata from the continental margin by large fluvial channels of the Sorthat and the connected Röddinge Formation that ended in the sea deposits of the Ciechocinek Formation green series. (en)
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dbp:age
  • Latest Pliensbachian to Latest Toarcian (en)
  • ~Possible Lower Aalenian layers (en)
dbp:caption
  • Korsodde section of the Sorthat Formation, where the local Toarcian anoxic event stratum is located (en)
dbp:country
  • * * (en)
dbp:date
  • March 2022 (en)
dbp:name
  • Sorthat Formation (en)
dbp:namedby
  • Gry (en)
dbp:namedfor
  • Sorthat-Muleby, Bornholm (en)
dbp:overlies
  • Rønne & Hasle Formations (en)
dbp:paleocoordinates
  • Approx. 35°N (en)
dbp:period
  • Toarcian (en)
dbp:prilithology
dbp:reason
  • please spell out or define (en)
  • unable to parse sentence; needs to be simplified (en)
dbp:region
  • * *Rønne Graben (en)
dbp:subunits
  • Sorthat & Levka beds (en)
dbp:type
dbp:underlies
dbp:unitof
dbp:wikiPageUsesTemplate
dbp:yearTs
  • 1969 (xsd:integer)
dcterms:subject
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  • 55.09 14.42
rdf:type
rdfs:comment
  • The Sorthat Formation is a geologic formation on the island of Bornholm, Denmark and in the in the Baltic Sea. It is of Latest Pliensbachian to Late Toarcian age. Plant fossils have been recovered from the formation, along with several traces of invertebrate animals. The Sorthat Formation is overlain by fluvial to lacustrine gravels, along with sands, clay and in some places coal beds that are part of the Aalenian-Bathonian Bagå Formation. Until 2003, the Sorthat Formation was included as the lowermost part of the Bagå Formation, recovering the latest Pliensbachian to lower Aalenian boundary. The Sorthat strata reflect a mostly marginally deltaic to marine unit. Large streams fluctuated to the east, where a large river system was established at the start of the Toarcian. In the northwest, (en)
rdfs:label
  • Sorthat Formation (en)
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  • 14.420000 (xsd:float)
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