نتایج جستجو برای: calcareous nannofossils
تعداد نتایج: 3502 فیلتر نتایج به سال:
In the present study, the sediments of the Gurpi Formation in the Jafarabad section located in the southeast of Ilam were examined from the point of view of calcareous calcareous nannofossils. The sediments of the upper part of Gurpi Formation with a thickness of about 42 m are composed of limy marl sediments. In this study, 34 species belonging to 22 genera from the group of calcareous nannopl...
In the present study, the sediments of the Gurpi Formation in the Jafarabad section located in the southeast of Ilam were examined from the point of view of calcareous calcareous nannofossils. The sediments of the upper part of Gurpi Formation with a thickness of about 42 m are composed of limy marl sediments. In this study, 34 species belonging to 22 genera from the group of calcareous nannopl...
The history of meltwater flow from the Laurentide Ice Sheet to the Gulf of Mexico during the last deglaciation, which holds possible implications for the cause of the Younger Dryas cold episode, is not well understood. We propose a new chronology based on using the percentage of reworked calcareous nannofossils in Orca Basin sediments as a proxy for erosion. The period of greatest meltwater flo...
In support of the on-going temporal palaeoenvironmental and palaeoclimatic reconstructions Neogene sediments, this study attempts describing palaeo-proxies recovered from DEL-1 Well, western offshore Niger Delta. The use standard smear slide method enabled recovery well-preserved calcareous nannofossils that depicts early to mid – Miocene (NN4 NN5) sediments. up-hole relationships between relat...
Abstract The fossil remains of birds from the Miocene Portugal are scarce, encompassing a total twelve specimens, nine paleontological outcrops located in Leiria (central Portugal), southern sector Setúbal Peninsula and along lower Tagus Basin. This study focuses on new specimen found Praia do Penedo Norte (Sesimbra) coastal cliff corresponding to coracoid bone, attributed Morus sp., sulid bird...
New age data from Sr isotope analysis and both planktonic foraminifera and nannofossils are presented and discussed here for the Upper Eocene–Upper Miocene sedimentary rocks of the Değirmenlik (Kythrea) Group. New dating is also given of some Cretaceous and Pliocene sediments. In a revised stratigraphy the Değirmenlik (Kythrea) Group is divided into ten formations. Different Upper Miocene forma...
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