Jakabhegy formation boreholes M3-4, M10-12 Mescek Mountains Hungary (Triassic of Hungary)

Where: Hungary (46.1° N, 18.1° E: paleocoordinates 0.8° S, 29.7° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Jakabhegy Formation, Early/Lower Triassic (252.2 - 247.2 Ma)

• Its basal part is built up of a characteristic conglomerate containing many quartz-porphyry and quartz pebbles. Higher up the profile purple, pebbled sandstone, then purple equigranular, cross-bedded sandstone, finally reddisch brown, siltic, fine grained sandstone beds follow.

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; silty sandstone

• Overlaps the Kovagoszolos formation with a low angle disconformaty and, going beyond this far away, it can be found in the north forland of the Mescek Mountains above Silurian (or Carboniferous?) shales, in its south foreland, however, on Precambrian granites. The Patacs member lies conformarbly on top of the Jakabhegy formation.
• finally reddisch brown, siltic, fine grained sandstone beds follow...

Size class: microfossils

Preservation: original sporopollenin

Collection methods: core, chemical,

Primary reference: A. Barabas-Stuhl. 1981. Microflora of the Permian and Lower Triassic sediments of the Mecsek Mountains (south Hungary). Acta Geologica Academiae Scientarum Hungaricae 24(1):49-97 [C. Looy/C. Looy/C. Looy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24546: authorized by Cindy Looy, entered by Cindy Looy on 09.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Leschikisporites aduncus
(Leschik) Potonie 1958
Triadiaspora staplini
(Jansonius) Klaus 1964
Angustisulcites klaussi
(Freudenthal) Visscher 1966
Stellapollenites
  -
Alisporites
  -
cf. Alisporites ovatus
Jansonius 1962
Apiculatisporites
  -
"Apiculatisporites plicatus" = Apiculatisporis
"Apiculatisporites plicatus" = Apiculatisporis
Visscher 1966
Polypodiopsida
  - Osmundaceae
Punctatisporites
  -
Limitisporites
  -
Limitisporites moersensis
(Grebe) Klaus 1963
Sphenopsida
  -
Calamospora sp. Schopf et al.
Cycadopites
  -
Cycadopites coxxi
Visscher 1966
 Coniferales -
 Life -
Guttatisporites guttatus Visscher 1966
Visscher 1966