Diachronism of lower Toarcian calcareous nannofossils events
Other Title(s)
حوادث ثنائي الزمن للمستحاثات القزمة الكلسية للتوارسيان الأسفل
Author
Source
Damascus University Journal of Agricultural Sciences
Issue
Vol. 35, Issue 1 (30 Jun. 2019), pp.223-238, 16 p.
Publisher
Publication Date
2019-06-30
Country of Publication
Syria
No. of Pages
16
Main Subjects
Earth Sciences, Water and Environment
Abstract EN
A micropaleontology study was effected using the Calcareous Nannofossils in Pliensbachian/ Toarcian interval for Alcabideque section situated in Lusitanian basin (Portugal).
The last section is correlated with other studied sections founded in different basins.
Four index spices events are identified, the FO of Lotharingius velatus, Discorhabdus ignotus, Carinolithus superbus and LO of Mitrolithus jansae in Upper Pliensbachian - Early Toarcian.
The bioevents identified in Alcabideque is compared with the data of Peniche section SSGP of Toarcian.
The same order of bioevents is noticed in Alcabideque and Peniche sections belonging to Lusitanian basin.
Biostratigraphical correlation of Nannofossils events present a diacronism between the different basins.
A quantitative analysis of Nannofossils assemblage is calculated in Alcabideque section and studied with the curve of carbon isotope.
The curve of absolute abundance decrease in Lower Toarcian correspond a negative excursion of carbon isotope.
This diminution noticed in the period dominated by marl- clay sediments presenting anoxic conditions.
American Psychological Association (APA)
Kenjo, Samir. 2019. Diachronism of lower Toarcian calcareous nannofossils events. Damascus University Journal of Agricultural Sciences،Vol. 35, no. 1, pp.223-238.
https://search.emarefa.net/detail/BIM-1221152
Modern Language Association (MLA)
Kenjo, Samir. Diachronism of lower Toarcian calcareous nannofossils events. Damascus University Journal of Agricultural Sciences Vol. 35, no. 1 (2019), pp.223-238.
https://search.emarefa.net/detail/BIM-1221152
American Medical Association (AMA)
Kenjo, Samir. Diachronism of lower Toarcian calcareous nannofossils events. Damascus University Journal of Agricultural Sciences. 2019. Vol. 35, no. 1, pp.223-238.
https://search.emarefa.net/detail/BIM-1221152
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 236-238
Record ID
BIM-1221152