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Showing 1 to 20 of 34 for “"planktonic foraminifera"”.

  1. The evolution and palaeobiogeography of mesozoic planktonic foraminifera

    Hudson, Wendy2007

    … of Austria that were thought to be the earliest planktonic foraminifera. The first reactions of the palaeontological community were negative but in the subsequent forty years our knowledge of Jurassic planktonic foraminifera has expanded considerably. A thorough re-evaluation of the Oberhauser …

    plymouth Repository record

  2. Stratigraphy and Planktonic Foraminifera of the Upper Cretaceous Selma Group, Alabama

    Masters, Bruce AllenUniversity of Illinois at Urbana-Champaign2015

    Made available in DSpace on 2015-05-12T22:33:41Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7105173.PDF: 11717544 bytes, checksum: 7747e5bbc77b7cbe83c79258898743a8 (MD5) Previous issue date: 1970

    uiuc Repository record

  3. The influence of differential production and dissolution on the stable isotope composition of planktonic foraminifera

    Erez, JonathanMassachusetts Institute of Technology and Woods Hole Oceanographic Institution1978

    Planktonic foraminifera from plankton tows, sediment traps and sediments from the central North Atlantic were studied in order to understand how they acquire their oxygen and carbon isotope compositions. Shallow dwelling planktonic foraminifera (mostly spinose species), collected in plankton tows …

    woods-hole Repository record

  4. The influence of differential production and dissolution on the stable isotope composition of planktonic foraminifera

    Erez, JonathanMassachusetts Institute of Technology1979

    Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1979.

    mit Repository record

  5. Planktonic foraminifera in the sea of Okhotsk : population and stable isotopic analysis from a sediment trap

    Alderman, Susan E.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution1996

    The relationship of planktonic foraminiferal populations and stable isotopes to synoptic sea surface temperatures (SST's) was examined in the Sea of Okhotsk, using sediment trap samples (trap deployed Aug. '90 - Aug. '91; 53°19'N, 149°50'E) and AVHRR satellite sea surface temperature data. Synoptic …

    woods-hole Repository record

  6. Planktonic foraminifera in the sea of Okhotsk : population and stable isotopic analysis from a sediment trap

    Alderman, Susan ElizabethMassachusetts Institute of Technology1996

    Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1996.

    mit Repository record

  7. Late Holocene Climatic Change: The little ice age and El Nino from planktonic foraminifera in sediments off walvis bay, South West Africa

    Herbert, Russel SDepartment of Geological Sciences1986

    … 1975, Dunbar 1983), these are the first downcore foraminiferal species records of the South West African deposit. The abundances of some of the minor species, most notably G. ruber, show very distinctive peaks at apparently random intervals. It is thought that these sudden and short-lived …

    cape-town Repository record

  8. POPULATION DYNAMICS AND GEOCHEMISTRY OF BENTHIC AND PLANKTONIC FORAMINIFERA TO INTERPRET THE PALEOCEANOGRAPHIC CHANGES ACROSS THE CENOMANIAN-TURONIAN OCEANIC ANOXIC EVENT 2 AT LOW AND HIGH LATITUDES

    AMAGLIO, GIULIAUniversità degli Studi di Milano2025

    … research project has investigated benthic and planktonic foraminiferal dynamics across one of the greatest environmental perturbations that occurred throughout the Earth’s history, namely the Cenomanian-Turonian Oceanic Anoxic Event 2 (OAE 2). It is globally marked by a positive δ13C excursion …

    milano Repository record

  9. Trace elements in marine biogenic carbonates: analysis and application to past ocean chemistry

    Greaves, Mervyn JohnUniversity of Southampton2008

    … determination of Mg/Ca, Sr/Ca and Cd/Ca in<br/>planktonic foraminiferal calcite, using inductively coupled plasma optical emission<br/>spectrophotometry and isotope dilution thermal ionisation mass spectrometry, and<br/>propose a potential reference material for Mg/Ca in foraminiferal calcite. …

    soton Repository record

  10. Seasonal and Annual Variability In Elemental and Isotopic Proxies of Past Ocean Conditions: Results From the Guaymas and Cariaco Basins

    Wejnert, Katherine

    <p>The isotopic and trace element composition of planktonic foraminiferal shells are controlled by the chemical and physical proprieties of the ambient seawater and can be used to reconstruct past oceanic conditions. These proxies are quantitatively defined and validated by analyzing how the …

    south-carolina Repository record

  11. ΜΕΛΕΤΗ ΤΩΝ ΜΟΛΑΣΣΙΚΩΝ ΙΖΗΜΑΤΩΝ ΤΟΥ ΣΧΗΜΑΤΙΣΜΟΥ ΤΣΟΤΥΛΙΟΥ ΤΗΣ ΜΕΣΟΕΛΛΗΝΙΚΗΣ ΑΥΛΑΚΑΣ (ΜΙΚΡΟΠΑΛΑΙΟΝΤΟΛΟΓΙΑ-ΣΤΡΩΜΑΤΟΓΡΑΦΙΑ)

    Φερμέλη, ΓεωργίαΕθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)1987

    … IT PRESENTS A) A DETAILED DEFINITION OF THE PLANKTONIC FORAMINIFERA AND OTHER MICROFOSSILS FOUND WITHIN THE MOLASSIC SEDIMENTS, B) A BIOZONATION BASED ON THE STRATIGRAPHIC RANGES OF THE PLANKTONIC FORAMINIFERA IDENTIFIED AND C) A MINERAL AND GRAIN -SIZE ANALYSIS OF THE SEDIMENTS DISCUSSED. …

    greece Repository record

  12. The Middle to Late Cretaceous microbiostratigraphy (foraminifera) and lithostratigraphy of the Cauvery Basin, Southeast India

    Tewari, Archana1996

    … of the Cauvery Basin, Southeast India. The planktonic and benthonic foraminifera are used to establish microbiostratigraphic zonations for the mid-Cretaceous succession in the Basin; leading to the first proposal of a benthonic foraminiferal zonation scheme. The schemes are primarily defined …

    plymouth Repository record

  13. Aridification of the Indian subcontinent during the Holocene : implications for landscape evolution, sedimentation, carbon cycle, and human civilizations

    Ponton, CamiloMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2012

    … the present. The oxygen isotopic composition of planktonic foraminifera from this site indicates drought-prone conditions began as early as ~3,000 years BP. The aridity record also allowed examination of relationships between hydroclimate and terrestrial carbon discharge to the ocean. Comparison …

    woods-hole Repository record

  14. Aridification of the Indian subcontinent during the Holocene : implications for landscape evolution, sedimentation, carbon cycle, and human civilizations

    Ponton, CamiloMassachusetts Institute of Technology2012

    … the present. The oxygen isotopic composition of planktonic foraminifera from this site indicates drought-prone conditions began as early as -3,000 years BP. The aridity record also allowed examination of relationships between hydroclimate and terrestrial carbon discharge to the ocean. Comparison …

    mit Repository record

  15. Planktonic foraminiferal biostratigraphy and correlation of the aquia formation in the type area, along the Potomac River, Virginia

    Faris, Craig DuncanVirginia Polytechnic Institute and State University1982

    Planktonic Foraminifera were examined from the Aquia Formation (Late Paleocene) from 2 localities in the Aquia type area along the Potomac River 7 miles southeast of Stafford, Virginia to: identify taxa present, and to effect biostratigraphic correlation with other Paleocene studies on the Virginia …

    vt Repository record

  16. Inferring ocean circulation during the Last Glacial Maximum and last deglaciation using data and models

    Amrhein, Daniel E.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2016

    … oxygen isotope time series from benthic and planktonic foraminifera, I show that the data are in agreement with the modern circulation, quantify their power to infer circulation changes, and propose new data locations. • An ocean general circulation model (the MITgcm) constrained to fit LGM …

    woods-hole Repository record

  17. Inferring ocean circulation during the last glacial maximum and last deglaciation using data and models

    Amrhein, Daniel EdwardMassachusetts Institute of Technology2017

    … oxygen isotope time series from benthic and planktonic foraminifera, I show that the data are in agreement with the modem circulation, quantify their power to infer circulation changes, and propose new data locations. -- An ocean general circulation model (the MITgcm) constrained to fit LGM …

    mit Repository record

  18. A Foraminiferal Biostratigraphy of the Campanian and Maastrichtian Chalks of the United Kingdom.

    Swiecicki, Anthony1980

    The foraminiferal fauna from twenty-seven sections of Campanian and Maastrichtian chalk from both the onshore and offshore United Kingdom have been studied. In total, 160 species and subspecies belonging to 54 genera have been recorded and a complete revision of their systematics, with full …

    plymouth Repository record

  19. Composition and characteristics of particles in the ocean : evidence for present day resuspension

    Richardson, Mary JosephineMassachusetts Institute of Technology and Woods Hole Oceanographic Institution1980

    … supports present-day resuspension. Benthic foraminifera, iron-oxidicoated planktonic foraminifera and the glacial, subpolar planktonic foraminifera (Neogloboquadrina pachyderma (sinistral)) in traps at 10,100 and a few specimens at 500 mab, provide conclusive evidence for local resuspension. …

    woods-hole Repository record

  20. Deciphering isotopic signals of monsoon-induced upwelling in foraminifera from the Western Arabian sea sediment trap

    Stuart, Dana R.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution1997

    … analyses have been made on four species of foraminifera collected with a PARFLUX Mark VI sediment trap in the Arabian Sea during the 1986 and 1987 monsoons. Two of the species are non-spinose thermocline dwellers (Neogloboquadrina dutertrei, Globorotalia menardii) and two are spinose surface …

    woods-hole Repository record

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