نتایج جستجو برای: calcareous nannofossil

تعداد نتایج: 3540  

2016
Jonas Osterloff Ingunn Nilssen Ingvar Eide Marcia Abreu de Oliveira Figueiredo Frederico Tapajós de Souza Tâmega Tim W Nattkemper

This paper presents a machine learning based approach for analyses of photos collected from laboratory experiments conducted to assess the potential impact of water-based drill cuttings on deep-water rhodolith-forming calcareous algae. This pilot study uses imaging technology to quantify and monitor the stress levels of the calcareous algae Mesophyllum engelhartii (Foslie) Adey caused by variou...

Journal: :Geological Society of America Bulletin 2022

Abstract During the Tertiary evolution of Western Mediterranean subduction system, a migrating foreland basin system developed between Maghrebian orogenic belt and adjacent African Craton. However, comprehensive reconstruction systems Rif Chain is still missing. By integrating field observations with quantitative biostratigraphic data from calcareous nannofossil assemblages, sandstone compositi...

Jalili, , Notghi Moghaddam, ,

Crystallography is the experimental science of determining the arrangement of atoms in crystalline solids. Calcareous nanoplankton are one of the most abundant calcite unicellular planktonic organisms on the Earth. This group include coccoliths which are formed from calcite crystals. They are one of the most important microfossil groups in biostratigraphic, paleontologyl and oil exploration stu...

2004
B. A. Welle A. C. Hirsch L. E. Davis

A sedimentological survey of the southwest arm of the Holocene Pigeon Creek tidal lagoon on San Salvador Island, Bahamas was conducted to determine the origin and distribution of calcareous sediments. Transect surveys, surface samples, and sediment cores were collected and examined to determine the abundance and distribution of sediments and sediment producers in the lagoon and associated tidal...

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