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William A P Wimbledon - One of the best experts on this subject based on the ideXlab platform.
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inter regional correlation of jurassic cretaceous boundary strata based on the Tithonian valanginian dinoflagellate cyst biostratigraphy of the volga basin western russia
Review of Palaeobotany and Palynology, 2011Co-Authors: Ian C Harding, James B. Riding, Giles A Smith, William A P WimbledonAbstract:Abstract Correlation of Jurassic/Cretaceous boundary successions in the Boreal Realm based on ammonite biostratigraphy is problematical due to faunal provincialism. This paper investigates the marine palynology of the Tithonian to Valanginian strata at Gorodishche and Kashpir in western Russia, documenting the ranges of > 100 dinoflagellate cyst species used to compile a detailed Tithonian-Valanginian palynostratigraphy for the Volga Basin. Datums of key taxa are used to define ages for unreliably dated strata in the Russian successions by comparison with ranges calibrated to ammonite zones in Boreal northwest Europe. The appearance of Gochteodinia villosa indicates a correlation between the bases of the Late Tithonian Epivirgatites nikitini (ammonite) Zone of the Volga Basin and the Galbanites kerberus Zone of northwest Europe. A dinoflagellate cyst interval zonation, comprising five zones and seven subzones is defined for the Volga Basin. There are notable differences between Tithonian and Berriasian dinoflagellate cyst floras in the Volga Basin and northwest Europe, but Valanginian dinoflagellate cyst assemblages throughout the Northern Hemisphere demonstrate a much more cosmopolitan composition.
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Inter-regional correlation of Jurassic/Cretaceous boundary strata based on the Tithonian-Valanginian dinoflagellate cyst biostratigraphy of the Volga Basin, western Russia
Review of Palaeobotany and Palynology, 2011Co-Authors: Ian C Harding, James B. Riding, Giles A Smith, William A P WimbledonAbstract:Abstract Correlation of Jurassic/Cretaceous boundary successions in the Boreal Realm based on ammonite biostratigraphy is problematical due to faunal provincialism. This paper investigates the marine palynology of the Tithonian to Valanginian strata at Gorodishche and Kashpir in western Russia, documenting the ranges of > 100 dinoflagellate cyst species used to compile a detailed Tithonian-Valanginian palynostratigraphy for the Volga Basin. Datums of key taxa are used to define ages for unreliably dated strata in the Russian successions by comparison with ranges calibrated to ammonite zones in Boreal northwest Europe. The appearance of Gochteodinia villosa indicates a correlation between the bases of the Late Tithonian Epivirgatites nikitini (ammonite) Zone of the Volga Basin and the Galbanites kerberus Zone of northwest Europe. A dinoflagellate cyst interval zonation, comprising five zones and seven subzones is defined for the Volga Basin. There are notable differences between Tithonian and Berriasian dinoflagellate cyst floras in the Volga Basin and northwest Europe, but Valanginian dinoflagellate cyst assemblages throughout the Northern Hemisphere demonstrate a much more cosmopolitan composition.
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Jurassic-Cretaceous boundary:Portland-Purbeck magnetostratigraphy and possible correlation to the Tethyan faunal realm
Geobios, 1994Co-Authors: James G. Ogg, Rhonald W. Hasenyager, William A P WimbledonAbstract:A composite magnetic polarity pattern of the Portland and Purbeck Beds (Portlandian to Berriasian age) is constructed from nine sections in the Dorset and Wiltshire regions of southern England. This pattern is tentatively correlated to the Tithonian-Berriasian magnetic polarity time scale of the Tethyan faunal realm. The shallow-marine Portland Beds began deposition during polarity chron M21r (mid-Tithonian), contain a transgressive hiatus encompassing chron M20r, and were terminated by emergence during chron M19r (Late Tithonian), corresponding to the base of the Durangites ammonite Zone in the Tethyan realm. The terrestrial to marginal-marine Purbeck Beds encompass polarity chrons M19r through M14r, implying deposition from latest Tithonian (Late Portlandian) to the beginning of the Valanginian stage. The Cinder Bed transgression of the middle Purbeck Beds occurred at the beginning of chron M17n, corresponding to the Berriasella privasensis ammonite Subzone in the Tethyan realm. The mean paleomagnetic pole of the Purbeck Beds is at 71.2°N, 207.8°E (dp/dm=3.6°/5.1°), implying a paleolatitude of 34°N.
Ian C Harding - One of the best experts on this subject based on the ideXlab platform.
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inter regional correlation of jurassic cretaceous boundary strata based on the Tithonian valanginian dinoflagellate cyst biostratigraphy of the volga basin western russia
Review of Palaeobotany and Palynology, 2011Co-Authors: Ian C Harding, James B. Riding, Giles A Smith, William A P WimbledonAbstract:Abstract Correlation of Jurassic/Cretaceous boundary successions in the Boreal Realm based on ammonite biostratigraphy is problematical due to faunal provincialism. This paper investigates the marine palynology of the Tithonian to Valanginian strata at Gorodishche and Kashpir in western Russia, documenting the ranges of > 100 dinoflagellate cyst species used to compile a detailed Tithonian-Valanginian palynostratigraphy for the Volga Basin. Datums of key taxa are used to define ages for unreliably dated strata in the Russian successions by comparison with ranges calibrated to ammonite zones in Boreal northwest Europe. The appearance of Gochteodinia villosa indicates a correlation between the bases of the Late Tithonian Epivirgatites nikitini (ammonite) Zone of the Volga Basin and the Galbanites kerberus Zone of northwest Europe. A dinoflagellate cyst interval zonation, comprising five zones and seven subzones is defined for the Volga Basin. There are notable differences between Tithonian and Berriasian dinoflagellate cyst floras in the Volga Basin and northwest Europe, but Valanginian dinoflagellate cyst assemblages throughout the Northern Hemisphere demonstrate a much more cosmopolitan composition.
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Inter-regional correlation of Jurassic/Cretaceous boundary strata based on the Tithonian-Valanginian dinoflagellate cyst biostratigraphy of the Volga Basin, western Russia
Review of Palaeobotany and Palynology, 2011Co-Authors: Ian C Harding, James B. Riding, Giles A Smith, William A P WimbledonAbstract:Abstract Correlation of Jurassic/Cretaceous boundary successions in the Boreal Realm based on ammonite biostratigraphy is problematical due to faunal provincialism. This paper investigates the marine palynology of the Tithonian to Valanginian strata at Gorodishche and Kashpir in western Russia, documenting the ranges of > 100 dinoflagellate cyst species used to compile a detailed Tithonian-Valanginian palynostratigraphy for the Volga Basin. Datums of key taxa are used to define ages for unreliably dated strata in the Russian successions by comparison with ranges calibrated to ammonite zones in Boreal northwest Europe. The appearance of Gochteodinia villosa indicates a correlation between the bases of the Late Tithonian Epivirgatites nikitini (ammonite) Zone of the Volga Basin and the Galbanites kerberus Zone of northwest Europe. A dinoflagellate cyst interval zonation, comprising five zones and seven subzones is defined for the Volga Basin. There are notable differences between Tithonian and Berriasian dinoflagellate cyst floras in the Volga Basin and northwest Europe, but Valanginian dinoflagellate cyst assemblages throughout the Northern Hemisphere demonstrate a much more cosmopolitan composition.
James B. Riding - One of the best experts on this subject based on the ideXlab platform.
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inter regional correlation of jurassic cretaceous boundary strata based on the Tithonian valanginian dinoflagellate cyst biostratigraphy of the volga basin western russia
Review of Palaeobotany and Palynology, 2011Co-Authors: Ian C Harding, James B. Riding, Giles A Smith, William A P WimbledonAbstract:Abstract Correlation of Jurassic/Cretaceous boundary successions in the Boreal Realm based on ammonite biostratigraphy is problematical due to faunal provincialism. This paper investigates the marine palynology of the Tithonian to Valanginian strata at Gorodishche and Kashpir in western Russia, documenting the ranges of > 100 dinoflagellate cyst species used to compile a detailed Tithonian-Valanginian palynostratigraphy for the Volga Basin. Datums of key taxa are used to define ages for unreliably dated strata in the Russian successions by comparison with ranges calibrated to ammonite zones in Boreal northwest Europe. The appearance of Gochteodinia villosa indicates a correlation between the bases of the Late Tithonian Epivirgatites nikitini (ammonite) Zone of the Volga Basin and the Galbanites kerberus Zone of northwest Europe. A dinoflagellate cyst interval zonation, comprising five zones and seven subzones is defined for the Volga Basin. There are notable differences between Tithonian and Berriasian dinoflagellate cyst floras in the Volga Basin and northwest Europe, but Valanginian dinoflagellate cyst assemblages throughout the Northern Hemisphere demonstrate a much more cosmopolitan composition.
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Inter-regional correlation of Jurassic/Cretaceous boundary strata based on the Tithonian-Valanginian dinoflagellate cyst biostratigraphy of the Volga Basin, western Russia
Review of Palaeobotany and Palynology, 2011Co-Authors: Ian C Harding, James B. Riding, Giles A Smith, William A P WimbledonAbstract:Abstract Correlation of Jurassic/Cretaceous boundary successions in the Boreal Realm based on ammonite biostratigraphy is problematical due to faunal provincialism. This paper investigates the marine palynology of the Tithonian to Valanginian strata at Gorodishche and Kashpir in western Russia, documenting the ranges of > 100 dinoflagellate cyst species used to compile a detailed Tithonian-Valanginian palynostratigraphy for the Volga Basin. Datums of key taxa are used to define ages for unreliably dated strata in the Russian successions by comparison with ranges calibrated to ammonite zones in Boreal northwest Europe. The appearance of Gochteodinia villosa indicates a correlation between the bases of the Late Tithonian Epivirgatites nikitini (ammonite) Zone of the Volga Basin and the Galbanites kerberus Zone of northwest Europe. A dinoflagellate cyst interval zonation, comprising five zones and seven subzones is defined for the Volga Basin. There are notable differences between Tithonian and Berriasian dinoflagellate cyst floras in the Volga Basin and northwest Europe, but Valanginian dinoflagellate cyst assemblages throughout the Northern Hemisphere demonstrate a much more cosmopolitan composition.
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MICRODINIUM AVOCETIANUM SP. NOV., A DINOFLAGELLATE CYST FROM THE LATEST JURASSIC (Tithonian) OF AUSTRALIA
Palynology, 2001Co-Authors: James B. RidingAbstract:Abstract The new species Microdinium avocetianum from the Tithonian (Upper Jurassic) of Australia is described. It is a small partiform gonyaulacalean cyst with a distinctive paratabulation style, dark autophragm and low, irregularly denticulate crests. The species may be relatively prominent in the late Tithonian (Pseudoceratium iehiense Range Zone) of the Timor Sea, offshore northwestern Australia and the Carnarvon Basin, offshore Western Australia.
Giles A Smith - One of the best experts on this subject based on the ideXlab platform.
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inter regional correlation of jurassic cretaceous boundary strata based on the Tithonian valanginian dinoflagellate cyst biostratigraphy of the volga basin western russia
Review of Palaeobotany and Palynology, 2011Co-Authors: Ian C Harding, James B. Riding, Giles A Smith, William A P WimbledonAbstract:Abstract Correlation of Jurassic/Cretaceous boundary successions in the Boreal Realm based on ammonite biostratigraphy is problematical due to faunal provincialism. This paper investigates the marine palynology of the Tithonian to Valanginian strata at Gorodishche and Kashpir in western Russia, documenting the ranges of > 100 dinoflagellate cyst species used to compile a detailed Tithonian-Valanginian palynostratigraphy for the Volga Basin. Datums of key taxa are used to define ages for unreliably dated strata in the Russian successions by comparison with ranges calibrated to ammonite zones in Boreal northwest Europe. The appearance of Gochteodinia villosa indicates a correlation between the bases of the Late Tithonian Epivirgatites nikitini (ammonite) Zone of the Volga Basin and the Galbanites kerberus Zone of northwest Europe. A dinoflagellate cyst interval zonation, comprising five zones and seven subzones is defined for the Volga Basin. There are notable differences between Tithonian and Berriasian dinoflagellate cyst floras in the Volga Basin and northwest Europe, but Valanginian dinoflagellate cyst assemblages throughout the Northern Hemisphere demonstrate a much more cosmopolitan composition.
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Inter-regional correlation of Jurassic/Cretaceous boundary strata based on the Tithonian-Valanginian dinoflagellate cyst biostratigraphy of the Volga Basin, western Russia
Review of Palaeobotany and Palynology, 2011Co-Authors: Ian C Harding, James B. Riding, Giles A Smith, William A P WimbledonAbstract:Abstract Correlation of Jurassic/Cretaceous boundary successions in the Boreal Realm based on ammonite biostratigraphy is problematical due to faunal provincialism. This paper investigates the marine palynology of the Tithonian to Valanginian strata at Gorodishche and Kashpir in western Russia, documenting the ranges of > 100 dinoflagellate cyst species used to compile a detailed Tithonian-Valanginian palynostratigraphy for the Volga Basin. Datums of key taxa are used to define ages for unreliably dated strata in the Russian successions by comparison with ranges calibrated to ammonite zones in Boreal northwest Europe. The appearance of Gochteodinia villosa indicates a correlation between the bases of the Late Tithonian Epivirgatites nikitini (ammonite) Zone of the Volga Basin and the Galbanites kerberus Zone of northwest Europe. A dinoflagellate cyst interval zonation, comprising five zones and seven subzones is defined for the Volga Basin. There are notable differences between Tithonian and Berriasian dinoflagellate cyst floras in the Volga Basin and northwest Europe, but Valanginian dinoflagellate cyst assemblages throughout the Northern Hemisphere demonstrate a much more cosmopolitan composition.
John W.m. Jagt - One of the best experts on this subject based on the ideXlab platform.
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current knowledge of ammonite assemblages from the stramberk limestone Tithonian lower berriasian at kotouc quarry outer western carpathians czech republic
Cretaceous Research, 2018Co-Authors: Zdeněk Vašíček, Petr Skupien, John W.m. JagtAbstract:Abstract Forty-two species of perisphinctoid ammonites from the Stramberk Limestone at Kotouc Quarry near Stramberk (Moravia, Czech Republic) have been taxonomically assessed since 2013. Some of these species are contained in old collections at various Moravian-Silesian museums, while others are in the collections of two of us (ZV and PS); all are from Kotouc Quarry. In view of the fact that the Stramberk Limestone usually lacks distinct bedding, the stratigraphical position (ammonite zones) of the taxa identified is derived from literature data. Ammonite species identified document the entire Tithonian to the lower Berriasian. One taxon of early Berriasian age is described as new, Neocosmoceras eliasi. The Tithonian ammonite assemblage, with the exception of the uppermost portion of that stage, is close to those on record from the Mediterranean bioprovince in adjacent countries. In the uppermost Tithonian, a cosmopolitan species, Substeueroceras koeneni, appears. In the lower Berriasian, in addition to Mediterranean representatives, taxa that are known from the Crimean Peninsula and, exceptionally, those from the Subboreal Russian Platform Basin, are present.
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Current knowledge of ammonite assemblages from the Štramberk Limestone (Tithonian–lower Berriasian) at Kotouč Quarry, Outer Western Carpathians (Czech Republic)
Cretaceous Research, 2018Co-Authors: Zdeněk Vašíček, Petr Skupien, John W.m. JagtAbstract:Abstract Forty-two species of perisphinctoid ammonites from the Stramberk Limestone at Kotouc Quarry near Stramberk (Moravia, Czech Republic) have been taxonomically assessed since 2013. Some of these species are contained in old collections at various Moravian-Silesian museums, while others are in the collections of two of us (ZV and PS); all are from Kotouc Quarry. In view of the fact that the Stramberk Limestone usually lacks distinct bedding, the stratigraphical position (ammonite zones) of the taxa identified is derived from literature data. Ammonite species identified document the entire Tithonian to the lower Berriasian. One taxon of early Berriasian age is described as new, Neocosmoceras eliasi. The Tithonian ammonite assemblage, with the exception of the uppermost portion of that stage, is close to those on record from the Mediterranean bioprovince in adjacent countries. In the uppermost Tithonian, a cosmopolitan species, Substeueroceras koeneni, appears. In the lower Berriasian, in addition to Mediterranean representatives, taxa that are known from the Crimean Peninsula and, exceptionally, those from the Subboreal Russian Platform Basin, are present.
