نتایج جستجو برای: dinoflagellate cysts

تعداد نتایج: 30636  

Journal: :Anais da Academia Brasileira de Ciencias 2017
Lidia A Kuhn Paulo A Souza Rodrigo R Cancelli Wagner G Silva Renato B Macedo

This paper presents a paleoenvironmental reconstruction from palynological analyses of a sedimentary core of Holocene age, drilled at municipality of Garopaba (Santa Catarina), Southern Brazil. A total of 46 samples was collected for palynological analyses in the 450 cm-long core PCSC-3, as also three samples for radiocarbon dating and granulometric analyses. The palynological content includes ...

Journal: Geopersia 2017

The Upper Cretaceous strata were studied in a composite stratigraphic section named here Padeha-Baghak section in east of Koppeh-Dagh basin, north east of Iran. In this study, palynostratigraphy, palynofacies and depositional environment history of Abderaz Formation were integrated with sequence stratigraphy. Determination of sea level history and sequence units of the Abderaz Formation using s...

C. J. S. Bolch, G. Attaran-Fariman ,

Phytoplankton cells and resting cysts of the species Scrippsiella trochoidea are regular and dominant components of the dinoflagellate flora of coastal marine waters and sediments around the world. This species is a common harmful bloom forming species in coastal waters. In this study, for the first time cyst of S. trochoidea were isolated from the sediments of southeast coast of Iran...

Journal: Geopersia 2013
Bijan Beiranvand Ebrahim Ghasemi-Nejad, Mohammad Reza Kamali

Statistical studies on Palynology contents of Late Cretaceous to Paleocene age Gurpi Formation in a surface section in Zagros Basin,SW Iran indicate changes in abundance, species diversity, ratio of Spiniferites to Cyclonephelium (S/C), palynological marine index(PMI) values and organic facies. These palynological variations clearly reflect fluctuations in relative sea-level and depositionalenv...

Journal: :geopersia 0
bijan beiranvand exploration & production division, research institute of petroleum industry, tehran, islamic republic of iran ebrahim ghasemi-nejad department of geology, university college of sciences, university of tehran, tehran, iran mohammad reza kamali exploration & production division, research institute of petroleum industry, tehran, islamic republic of iran

statistical studies on palynology contents of late cretaceous to paleocene age gurpi formation in a surface section in zagros basin,sw iran indicate changes in abundance, species diversity, ratio of spiniferites to cyclonephelium (s/c), palynological marine index(pmi) values and organic facies. these palynological variations clearly reflect fluctuations in relative sea-level and depositionalenv...

C. J. S. Bolch G. Attaran-Fariman,

Phytoplankton cells and resting cysts of the species Scrippsiella trochoidea are regular and dominant components of the dinoflagellate flora of coastal marine waters and sediments around the world. This species is a common harmful bloom forming species in coastal waters. In this study, for the first time cyst of S. trochoidea were isolated from the sediments of southeast coast of Iran. Five str...

Journal: :AI Commun. 2003
Florentino Fernández Riverola Juan M. Corchado

Spain. system which possesses the flexibility to behave in different ways depending on the state of the environment. This paper presents the application of a novel hybrid artificial intelligence (AI) model to a forecasting problem over a complex and dynamic environment. The approach, which is discussed, is capable of producing satisfactory results in situations in which neither artificial neura...

Journal: :New Zealand Journal of Marine and Freshwater Research 1987

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