Sandstone from the Staric site stratigraphically belongs to the Upper Carboniferous Petrkovice Member (Ostrava Formation, Mississippian, Early Namurian
) of the Czech part of the Upper Silesian Coal Basin (Hylova et al., 2013, 2016).
While engaged in the taxonomic revision of upper Namurian
to middle Westphalian floras of the Maritime Provinces of Canada, it became apparent that certain forms of the sphenopsid fossil-genera Annularia and Asterophyllites needed special attention in a broader context.
The carboniferous Westphalian and Namurian
contains numerous sandstones which are proven reservoirs in the oilfields within the Gainsborough Trough.
The Cliffs consist mainly of beds of Namurian
shale and sandstone, with the oldest rocks being found at the bottom.
The 10-furlong fillies' maiden is a tricky contest with a hopeful vote going to Namurian
In June 2011, Eden Energy commissioned US consultants RPS Group to investigate the potential shale gas reserves in the Namurian
measures of about 800sq km beneath Wales.
The company said it planned to take samples of the Westphalian coals and Namurian
Strata to enable laboratory testing to find out if methane can be used as a clean energy supply.
Metropator pusillus Handlirsch 1906 is of Early Pennsylvanian age (Namurian
Stage) and originates from the Altamont Coal Mine of the Lower Pottsville Group in central Pennsylvania.
The stratigraphical position of the oldest known Pterygota (Insecta, Carboniferous, Namurian
Electric logs indicate the well intersected gas bearing Namurian
Millstone Grit Formation (Carboniferous) at 10029ft and indications of formation gas are seen from mudlogs down to 11440ft.
However, Cross and Taggart (2004) assigned a tentative age of Namurian
to the Michigan Formation based on a study of fossil plant fragments and associated spores from the MNSC mine.