Dinoflagellate cyst assemblages across the Oxfordian/Kimmeridgian boundary (Upper Jurassic) at Flodigarry, Staffin Bay, Isle of Skye, Scotland – a proposed GSSP for the base of the Kimmeridgian

• Autorzy: Barski M.

Identyfikatory

DOI

10.5604/01.3001.0012.4594

• Języki publikacji: EN

Abstrakty

EN

Examination of seven ammonite-calibrated palynological samples across the Oxfordian/Kimmeridgian boundary in the Flodigarry sections at Staffin Bay, Isle of Skye, northern Scotland, has revealed dinoflagellate cyst assemblages in general terms in line with previous contributions. The sparse occurrence of Emmetrocysta sarjeantii, Perisseiasphaeridium pannosum and Senoniasphaera jurassica slightly above the proposed Oxfordian/Kimmeridgian boundary may be used as a palynological approximation of the base of the Kimmeridgian. The high abundance of tests resembling modern zygnemataceous chlorophycean alga Spirogyra in two samples above the Oxfordian/Kimmeridgian boundary horizon is probably associated with increased eutrophication and possible association with ‟green tides”. This bloom is proposed as a palynofloral proxy event for the boundary in the Flodigarry section. According to previous studies, various eutrophication events may have a correlation potential in Subboreal Europe.

Słowa kluczowe

EN

Skye; Scotland; green tide; dinoflagellate cysts; Oxfordian/Kimmeridgian boundary

PL

Skye; Szkocja

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Volumina Jurassica
• Rocznik: 2018
• Tom: Vol. 16, no 1
• Strony: 51--62
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Barski M.

• Institute of Geology, Department of Geology, University of Warsaw, Żwirki i Wigury 93, 02-089 Warszawa

Bibliografia

• FLETCHER R.L., 1996 - The Occurrence of “Green Tides” - a Review. In: Marine Benthic Vegetation. Ecological Studies (Analysis and Synthesis) (eds W. Schramm, P.H. Nienhuis). 123. Springer, Berlin, Heidelberg
• GITMEZ G.U., 1970 - Dinoflagellate cysts and acritarchs from the basal Kimmeridgian (Upper Jurassic) of England, Scotland and France. Bulletin of the British Museum (Natural History), Geology, 18, 7, 233-331.
• GITMEZ G.U., SARJEANT W.A.S., 1972 - Dinoflagellate cysts and acritarchs from the Kimmeridgian (Upper Jurassic) of England, Scotland and France. Bulletin of the British Museum (NaturalHistory), Geology, 21, 5: 171-257, pl. 1-17.
• MATYJA B.A., WIERZBOWSKI A., WRIGHT J.K., 2006 - The Sub-Boreal/Boreal ammonite succession at the Oxfordian/ Kimmeridgian boundary at Flodigarry, Staffin Bay (Isle of Skye), Scotland. Transactions of the Royal Society of Edinburgh, Earth Sciences, 96: 387-405.
• POULSEN N.E., RIDING J.B., 2003 - The Jurassic dinoflagellate cyst zonation of Subboreal Northwest Europe. In: The Jurassic of Denmark and Greenland (eds J.R. Ineson, F. Surlyk). Geological Survey of Denmark and Greenland Bulletin, 1: 115¬144.
• RIDING J.B., THOMAS J.E., 1992 - Dinoflagellate cysts of the Jurassic System. In: A stratigraphic index of dinoflagellate cysts (Ed. A.J. Powell). Chapman and Hall, London.
• RIDING J.B., THOMAS J.E., 1997 - Marine palynomorphs from the Staffin Bay and Staffin Shale formations (Middle - Upper Jurassic) of the Trotternish Peninsula. Scottish Journal of Geology, 33: 59-74.
• WIERZBOWSKI A., COE A.L., HOUNSLOW M.W., MATYJA B. A., OGG J.G., PAGE K.N., WIERZBOWSKI H., WRIGHT J.K., 2006 - A potential stratotype for the Oxfordian/ Kimmeridgian boundary: Staffin Bay, Isle of Skye, U.K. Volumina Jurassica, 4: 17-33.
• WIERZBOWSKI A., SMOLEN J., IWANCZUK J., 2015 - The Oxfordian and Lower Kimmeridgian of the Peri-Baltic Syneclise (north-eastern Poland): stratigraphy, ammonites, microfossils (foraminifers, radiolarians), facies and palaeogeographic implications. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 277, 1: 63-104.
• WIERZBOWSKI A., ATROPS F., GRABOWSKI J., HOUN¬SLOW M., MATYJA B., OLÖRIZ F., PAGE K., PARENT H., ROGOV M.A., SCHWEIGERT G., VILLASENOR A.B., WIERZBOWSKI H., WRIGHT J.K., 2016 - Towards a consistent Oxfordian-Kimmeridgian global boundary: current state of knowledge. Volumina Jurassica, 14; 14-29.
• WIERZBOWSKI B.A., MATYJA B.A., WRIGHT J.K., 2018 - Summary comments on ammonite biostratigraphy and the evolution of the ammonite families Aulacostephanidae and Cardioceratidae of the uppermost Oxfordian and lowermost Kimmeridgian in the Staffin Bay sections (Isle of Skye, northern Scotland). Volumina Jurassica, 16: 27-50.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).