The position of the Bashkirian/Moscovian boundary in West European chronostratigraphy

Wagner, Ryszard; Bowman, Mike

doi:10.1127/nos/12/1983/132

Cited by 17 publications

(9 citation statements)

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“…Wagner and Higgins (1979) thought it unlikely that the Bashkirian-Moscovian and Westphalian B-C boundary would coincide because there is no floral break at the Westphalian B-C boundary (Aegir/Mansfield Marine Band). Van Ginkel (1965), Wagner and Higgins (1979), Wagner and Bowman (1983), and others proposed, on the basis of paleobotanical and paleontological evidence from Spain, that the Bashkirian-Moscovian boundary lies within the Westphalian A. They also recognized that a higher position, in the Westphalian C or at the Westphalian B-C boundary, is indicated by the data from the Donbass basin.…”

Section: Bashkirian-moscovian Boundarymentioning

confidence: 98%

Palynological correlation of major Pennsylvanian (Middle and Upper Carboniferous) chronostratigraphic boundaries in the Illinois and other coal basins

Peppers¹

1996

Palynological Correlation of Major Pennsylvanian (Middle and Upper Carboniferous) Chronostratigraphic Boundaries in the Illinoi

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Palynology provides chronostratigraphic correlations of Pennsylvanian (Middle and Upper Carboniferous) strata between the Illinois basin, which is the main focus of this study, and other coal basins in the UnitedStates, western Europe, and the Donets basin. Published reports and recent palynological analyses of coal samples from the Illinois basin, western part of the Midcontinent, and the Appalachian coal region were used in making the correlations. Correlations are made on the basis of first and last appearances and major changes in relative abundance of spore taxa. Studies of plant megafossils and faunas are discussed briefly in relation to some of the palynological correlations. Stratigraphers in the Midcontinent have considered the Lower Pennsylvanian Series equivalent to the Morrowan Stage, the Middle Pennsylvanian equivalent to the Atokan and Desmoinesian Stages, and the Upper Pennsylvanian equivalent to the Missourian and Virgilian Stages. I propose extending this nomenclature to the Illinois Basin. The chronostratigraphic classification of the Pennsylvanian System in the western part of the Midcontinent region was adopted by the Illinois State Geological Survey for the Illinois basin largely on the basis of studies of marine fossils. The precise position of the Morrowan−Atokan Stage boundary in Illinois is still not satisfactorily known. It generally has been correlated with the base of the Tradewater Formation but is herein correlated with the top of the Reynoldsburg Coal Bed, which is at the base of the formation. The top of the Morrowan occurs just above the base of the Tradewater Formation in western Kentucky and in the upper part of the Mansfield Formation in Indiana. I propose that the Atokan−Desmoinesian Stage boundary in Illinois correlates with the top of the Seville Limestone Member and equivalent limestone beds in Indiana and western Kentucky. The Desmoinesian−Missourian (Middle−Upper Pennsylvanian) boundary is correlated with the base of the Lake Creek Coal Member or, if that is not present, at the top of the Lonsdale Limestone Member in western Illinois and the top of the middle bench of the West Franklin Limestone Member in eastern Illinois and western Indiana. The Missourian−Virgilian Stage boundary has been correlated, in the absence of adequate palynological data, with strata a little below the Shumway Limestone Member as determined by fusulinid evidence. The Lower−Middle Pennsylvanian boundary in the Pennsylvanian stratotype in West Virginia proposed by the U.S. Geological Survey (USGS) is older than the Lower−Middle Pennsylvanian boundary of the Midcontinent. The latter correlates with the base of the Pounds Sandstone Member in Illinois and the Bee Spring Sandstone Member in western Kentucky. Although the Middle−Upper Pennsylvanian Series boundary has been correlated with the boundary between the Allegheny and Peppers, R. A., 1996, Palynological Correlation of Major Pennsylvanian (Middle and Upper Carboniferous) Chronostratigraphic Boundaries in the Illinois and Other Coal Basins: Boul...

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Section: Bashkirian-moscovian Boundarymentioning

confidence: 98%

Palynological correlation of major Pennsylvanian (Middle and Upper Carboniferous) chronostratigraphic boundaries in the Illinois and other coal basins

Peppers¹

1996

Palynological Correlation of Major Pennsylvanian (Middle and Upper Carboniferous) Chronostratigraphic Boundaries in the Illinoi

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“…According to Wagner & Álvarez-Vázquez (2010), Bergeria dilatata ranges from Langsettian to lower Asturian in the Iberian Peninsula. In the Cantabrian Mountains of NW Spain, the sparse records are from uppermost Langsettian strata of La Camocha, Asturias (Wagner & Álvarez-Vázquez, 1995) and San Emiliano, León (Wagner & Bowman, 1983), and from lower Asturian strata of the Central Asturian Coalfi eld. In SW Spain, the species has been widely sampled in upper Langsettian/ lower Duckmantian and lower Bolsovian strata of the Peñarroya-Belmez-Espiel Coalfi eld (Álvarez-Vázquez, 1995;Wagner & Álvarez-Vázquez, 2010;this paper).…”

Section: Geographic and Stratigraphic Distributionmentioning

confidence: 99%

Revision and significance of the Westphalian (Middle Pennsylvanian) arborescent lycopsid Bergeria dilatata (Lindley & Hutton) Álvarez-Vázquez & Wagner

Álvarez-Vázquez

Bek

Wagner

2018

Spanish J. Palaeontol.

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Bergeria dilatata (Lindley & Hutton) Álvarez-Vázquez & Wagner, a Middle Pennsylvanian lycopsid, is redescribed based on type material from England as well as 586 specimens from the Peñarroya-Belmez-Espiel Coalfield, Córdoba province, southern Spain. The species is characterized by longer than broad, smooth leaf cushions showing false leaf scars, and the presence of perennial, long, entire, single-veined leaves. A complete synonymy is presented and 21new species (two of them with doubts), previously placed in 6 diff erent genera, have been synonymized. Associated Flemingites-type cones, determined as Flemingites russelianus, yielded in situ spores of the Lagenoisporites rugosus type and microspores of the Microspinosporites type.

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“…The Valdeteja Formation represents a large, thick carbonate platform, Namurian -Early Westphalian in age. The San Emiliano Formation, established by Brouwer and van Ginkel (1964), is at least 1800 m thick and consists of deltaic siliciclastics and shallow-marine carbonates of Westphalian age (van Ginkel, 1965;Eichmüller, 1985;Wagner and Bowman, 1983). Fusulinacean data (van Ginkel and Villa, 1996) indicate an age of Lower/Upper Bashkirian for the basal part and Moscovian for the top.…”

Section: Location Stratigraphymentioning

confidence: 99%

Internal structure and depositional environment of Late Carboniferous mounds from the San Emiliano Formation, Cármenes Syncline, Cantabrian Mountains, Northern Spain

Samankassou

2001

Sedimentary Geology

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Well-exposed mounds are common in limestone of the Late Carboniferous San Emiliano Formation, Cantabrian Mountains (Northern Spain). They occur as obvious primary topographic features. Careful study of the mound intervals and surrounding strata revealed the internal structures of mounds and the factors controlling their growth. The substrate (2 -3 m) of the mounds consists of greyish to reddish, bedded oolitic and oncolithic packstone and grainstone. Crinoids, fragments of the alga Epimastopora, and, rarely, bryozoans are present. Ooids and oncoids indicate a wave-dominated high-energy environment. Presence of quartz indicates the influence of terrigenous siliciclastic input. Mound intervals (6 -12 m thick) are characterized by skeletal -microbial boundstone. Donezellid algae, agglutinated worm tubes, and calcisponges are the dominant fossils. Smaller foraminifers, gastropods, and brachiopods are also present. A peloidal-clotted matrix is characteristic and accounts for more than 30% of the mound volume. Intraframe pores are mainly filled by peloidal sediment and early marine cement. Intermound strata are approximately one-third as thick as time equivalent mounds. Mound fossils (algae, agglutinated worm tubes, and sponges) are uncommon. However, intermound strata are generally more diverse than the mounds, containing fusulinids, smaller foraminifers, bryozoans, gastropods, crinoids, and bioclasts. Some of these fossils have micritic envelopes. Bedded packstone and grainstone, 3 -6 m thick, with siliciclastic debris, rugose corals, and chaetetid sponges characterize the capping facies. Coated grains and small ooids are uncommon. This facies indicates shallowing to a higher energy environment and/or a higher input of siliciclastics, inhibiting mound growth. Mounds are interpreted to have accreted in a quiet environment below wave base. This position is comparable to the depositional environment inferred for many Late Paleozoic mounds described elsewhere, e.g., from Texas and New Mexico, Canadian Archipelago, and Carnic Alps in Austria. Mound relief is explained by (1) accumulation of peloidal-clotted sediments limited to boundstone and probably related to microbial activities, (2) widespread marine cementation within this area, and (3) low export of mound fossils to intermound areas. The position of the mounds within the sequence, and their initiation, size and termination, seem to be mainly controlled by sea-level fluctuations and siliciclastic input. D

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The position of the Bashkirian/Moscovian boundary in West European chronostratigraphy

Cited by 17 publications

References 0 publications

Palynological correlation of major Pennsylvanian (Middle and Upper Carboniferous) chronostratigraphic boundaries in the Illinois and other coal basins

Palynological correlation of major Pennsylvanian (Middle and Upper Carboniferous) chronostratigraphic boundaries in the Illinois and other coal basins

Revision and significance of the Westphalian (Middle Pennsylvanian) arborescent lycopsid Bergeria dilatata (Lindley & Hutton) Álvarez-Vázquez & Wagner

Internal structure and depositional environment of Late Carboniferous mounds from the San Emiliano Formation, Cármenes Syncline, Cantabrian Mountains, Northern Spain

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