نتایج جستجو برای: palynological studies

تعداد نتایج: 1426966  

Journal: :Agronomy 2023

This study aims to examine pollen morphologically via studies of 16 plant taxa from Turkish flora. The structures the examined, and their microscopic relevance, was discussed studied with help visualization using scanning transmission microscopies. Pollen grains were first acetolyzed, then quantitative qualitative features used evaluate species. prolate, spherical, elliptic, tricolporate, 3-col...

Journal: :Pakistan Journal of Biological Sciences 2004

Journal: :Acta Botanica Neerlandica 1966

2008
Stephen F. Pekar Nicholas Christie-Blick

An apparent mismatch between published oxygen isotopic data and other paleoclimate proxies for the span from 26–16 Ma is resolved by calibration against global sea-level estimates obtained from backstripping continental margin stratigraphy. Ice-volume estimates from calibrated oxygen isotope data compare favorably with stratigraphic and palynological data from Antarctica, and with estimates of ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید مدنی آذربایجان - دانشکده زبانهای خارجی 1391

since esp received universal attention to smooth the path for academic studies and productions, a great deal of research and studies have been directed towards this area. swales’ (1990) model of ra introduction move analysis has served a pioneering role of guiding many relevant studies and has proven to be productive in terms of helpful guidelines that are the outcome of voluminous productions ...

Journal: :IRAQI JOURNAL OF AGRICULTURAL SCIENCES 2020

Journal: :Atlantic Geology 2021

Triassic successions of the present-day Arctic contain abundant and diverse assemblages nonmarine palynomorphs that have provided important biostratigraphic information. Dinoflagellate cyst are biostratigraphically useful in marine intervals Upper Triassic. Based on published records, we present a compilation 78 last occurrences (LOs), first (FOs), some abundance events anticipated to correlati...

2011
Fredrick J. Rich Robert K. Booth

the Quaternary vegetation history of the southeastern united states has not been well studied, particularly in comparison to more northerly regions of north america, and this is even more apparent on the coastal plain of georgia (e.g., Watts, 1971; rich and spackman, 1979; rich 1984a, 1984b, 1996; rich and pirkle, 1998). the coastal region of georgia is characterized by a string of barrier isla...

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