Oceanographic significance of Pacific late Miocene clacareous nannoplankton
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Oceanographic significance of Pacific late Miocene clacareous nannoplankton by G. P. Lohmann

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Published by Woods Hole Oceanographic Institution in Woods, Hole, MA .
Written in English


  • Geology, Stratigraphic -- Miocene.,
  • Plankton -- Pacific Ocean -- Paleoclimatology.

Book details:

Edition Notes

Statementby G. P. Lohmann and J. J. Carlson.
SeriesWHOI -- 80-78., WHOI (Series) -- 80-78.
ContributionsCarlson, J. J.
The Physical Object
Pagination59 leaves :
Number of Pages59
ID Numbers
Open LibraryOL15174891M

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  Oceanographic significance of Pacific late miocene calcareous nannoplankton Lohmann, G. P.; Carlson, J. J. Abstract. Publication: Marine Micropaleontology. Pub Date: December DOI: /(81) Bibcode: MarMP L full text sources Cited by: Handbook of Cenozoic Calcareous Nannoplankton. Book 1: Orthlithae (Discoasters). Oceanographic significance of Pacific Late Miocene calcareous nannoplankton these two factors produce three. PDF | We describe in detail the Miocene to Quaternary paleoceanography of the western equatorial Pacific Ocean based on calcareous nannofossils of Hole | . Lohmann G.P. & Carlson J.J. Oceanographic significance of Pacific late Miocene calcareous nannoplankton. Mar. Micro­paleont. 6 – Majzon L. Geology of the Region between Magyarlápos and Dés. Magyar Állami Földtani Intézet Évi jelentése évről 2 – (in Hungarian).

We investigated the calcareous nannofossils in the western Pacific and Bahama Bank of Caribbean Sea to reconstruct the paleoceanography and correlate with the global events. The absolute abundant of coccolith (number/g) are gradually increased from NN6 throughout NN19 Zone, while the relative abundance of Discoaster is decreased at Sites in the western Pacific Ocean. A calcareous nannoplankton zonation for upper Miocene-Pliocene deposits from the southern Aegean area, with a comparison to Mediterranean stratotype localities. K.N.A.W. Proc. Ser. B, – Google Scholar. In this study we present a multiproxy investigation of late Miocene sediments from the east equatorial Pacific Integrated Ocean Drilling Program Site U where small reticulofenestrid‐type placoliths with a closed central area—known as small Dictyococcites spp. .   Census data of a major Cenozoic calcareous nannofossil genus (Discoaster) have been acquired from Site U, located near the Equator in the eastern Pacific Ocean and drilled in during Integrated Ocean Drilling Program (IODP) Expedition The investigated m thick upper Miocene sediment sequence is primarily composed of biogenic .

This thesis documents sedimentary changes in the middle to late Miocene of the Atlantic and Pacific Ocean basins. This time interval known as the carbonate crash interval (Ma) displays a severe perturbation of the carbonate system in the framework of the major Cenozoic cooling accompanied by changes in circulation mode, global nutrient shifts, plankton size changes and . sediment in the more resistant calcareous nannofossils and leads to the formation of nannoplankton chalk or ooze. Species selective dissolution in Eocene nannofossil assemblages is indicated by an increase in the percentage of some species of Discoaster (Ramsay, a). The data presented in this report show that Miocene and Pliocene. describe in detail the calcareous nannofossil assem- blages of Ocean Drilling Program (ODP), Hole B located in the western equatorial Pacific Ocean, and then we discuss the sea surface stability of the ocean from the Miocene to the Pleistocene, focusing on both the cocco- lith size and. Discoaster. abundance changes. 2. Oceanographic Setting. Studies of the late Miocene‐early Pliocene biogenic bloom typically have focused on high‐productivity areas in the Indian and Pacific Oceans in order to achieve high resolution samples. Thus there.