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  • 1990-1994  (49)
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  • 1
    Online Resource
    Online Resource
    Eocene-Oligocene Climatic and Biotic Evolution. (1992)
    Princeton :Princeton University Press,
    Details
    Keywords: Electronic books.
    Description / Table of Contents: No detailed description available for "Eocene-Oligocene Climatic and Biotic Evolution".
    Type of Medium: Online Resource
    Pages: 1 online resource (583 pages)
    Edition: 1st ed.
    ISBN: 9781400862924
    Series Statement: Princeton Series in Geology and Paleontology Series ; v.135
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=3030745
    DDC: 560.178
    Language: English
    Note: Cover -- CONTENTS -- Eocene-Oligocene Climatic and Biotic Evolution: An Overview -- Part I: The Chronological Framework -- Part II: Climatic Events -- Part III: The Marine Record -- Part IV: The Terrestrial Record.
    Location Call Number Limitation Availability
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    GEOMAR EBL
  • 2
    Electronic Resource
    Electronic Resource
    Ecology and Palaeoecology of Benthic Foraminifera. (1992)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 39 (1992), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1992.tb04846.x
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Abyssal Agglutinates: Back to Basics (1990)
    Kluwer
    In:  In: Paleoecology, Biostratigraphy, Paleoceanography and Taxonomy of Agglutinated Foraminifera. , ed. by Hemleben, C. NATO ASI Series C: Mathematical and Physical Sciences, 327 . Kluwer, Dordrecht, pp. 53-75.
    Details
    Publication Date: 2019-05-14
    Description: We live in a world of ever increasing complexity. In the 25 years since the publication of the Treatise volumes by Loeblich and Tappan (1964), the number of validly described foraminiferal genera has more than doubled from 1192 in 1964, to at least 2455 in 1988. Agglutinated foraminifera (including the proteinaceous allogromiids) occupy about 180 pages of the recently revised version (Loeblich and Tappan, 1988). From the astrorhizids to the chrysalidinids, there are now at least 624 valid agglutinated genera, nearly as many genera as in the hyaline calcareous benthic suborder Rotaliina.
    Type: Book chapter , NonPeerReviewed
    Format: text
    DOI: 10.1007/978-94-011-3350-0_6
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    OceanRep: Book chapter
  • 4
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    Neogene planktonic foraminifera from the southern Kerguelen Plateau (1992)
    PANGAEA
    In:  Supplement to: Berggren, William A (1992): Neogene planktonic foraminifer magnetostratigraphy of the southern Kerguelen Plateau (Sites 747, 748, 751). In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 631-647, https://doi.org/10.2973/odp.proc.sr.120.153.1992
    Details
    Publication Date: 2024-01-09
    Description: With the exception of a brief (2 m.y.) late Miocene-early Pliocene hiatus, an essentially complete Neogene record was recovered on the Kerguelen Plateau in a calcareous biofacies. The stratigraphic distribution of about 30 taxa of Neogene planktonic foraminifers recovered at Sites 747, 748,and 751 (Central and Southern Kerguelen plateaus; approximately 54°-58°S) is recorded. Faunas are characterized by low diversity and high dominance and exhibit a gradual decline in species numbers (reflecting a concomitant increase in biosiliceous forms, particularly diatoms) from about 10 in the early Miocene to 5-8 in the middle Miocene, 3-4 in the late Miocene, to essentially a lone (Neogloboquadrina pachyderma) form in the Pliocene-Pleistocene. A provisional sevenfold biostratigraphic zonation has been formulated that, together with the recovery of a representative Neogene magnetostratigraphic record, may ultimately lead to a correlation with low-latitude magnetobiostratigraphies. The initial appearance of Neogloboquadrina pachyderma is associated with magnetic polarity Chron (MPC) 4 (~7 Ma) and MPC 4A (〉8 Ma) at Sites 747 and 751, respectively.
    Keywords: 120-747A; 120-748B; 120-751A; DRILL; Drilling/drill rig; Joides Resolution; Leg120; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean
    Type: Dataset
    Format: application/zip, 9 datasets
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    DATA PANGAEA
  • 5
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    Paleogene planktonic foraminifera from the southern Kerguelen Plateau (1992)
    PANGAEA
    In:  Supplement to: Berggren, William A (1992): Paleogene planktonic foraminifer magnetobiostratigraphy of the southern Kerguelen Plateau (sites 747-749). In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 551-568, https://doi.org/10.2973/odp.proc.sr.120.151.1992
    Details
    Publication Date: 2024-01-09
    Description: An essentially complete Paleogene record was recovered on the Central and Southern Kerguelen plateaus (55°-59°S) in a calcareous biofacies. Recovery deteriorated in the middle Eocene and down to the upper Paleocene because of the presence of interbedded cherts and chalks. The stratigraphic distribution of about 70 taxa of planktonic foraminifers recovered at Sites 747-749 is reported in this paper. Faunas exhibited fairly high diversity (approximately 20-25 species) in the early Eocene, followed by a gradual reduction in diversity in the middle Eocene. A brief incursion of tropical keeled morozovellids occurred near the Paleocene/Eocene boundary, similar to that recorded on the Maud Rise (ODP Sites 689 and 690). The high-latitude Paleogene zonal scheme developed for ODP Leg 113 sites has been adopted (with minor modifications) for the lower Eocene-Oligocene part of the Kerguelen Plateau record. A representative Oligocene (polarity chronozones 7-13) and late Eocene-late middle Eocene (questionably polarity chronozones 16-18) magnetostratigraphic record has allowed the calibration of several biostratigraphic datum levels to the standard Global Polarity Time Scale (GPTS) and established their essential synchrony between low and high latitudes.
    Keywords: 120-747A; 120-747C; 120-748B; 120-748C; 120-749B; 120-749C; DRILL; Drilling/drill rig; Joides Resolution; Leg120; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean
    Type: Dataset
    Format: application/zip, 11 datasets
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    DATA PANGAEA
  • 6
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    Chemobiostratigraphy of the Cretaceous/Paleocene boundary at ODP Hole 120-750A (1992)
    PANGAEA
    In:  Supplement to: Zachos, James C; Aubry, Marie-Pierre; Berggren, William A; Ehrendorfer, Thomas; Heider, Franz; Lohmann, Kyger C (1992): Chemobiostratigraphy of the Cretaceous/Paleocene boundary at Site 750, Southern Kerguelen Plateau. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 961-977, https://doi.org/10.2973/odp.proc.sr.120.188.1992
    Details
    Publication Date: 2024-01-09
    Description: An integrated biostratigraphic and stable isotope investigation was conducted on a high-latitude sequence across the Cretaceous/Paleogene (K/P) boundary recovered in Hole 750A in the southern Indian Ocean. The sequence consists of nannofossil chalk and is discontinuous across the boundary; missing is an estimated 0.3-m.y. late Maestrichtian and early Danian interval. Nonetheless, because calcareous nannofossil Zones NP1 and NP2 are well-developed, micropaleontological studies of the sequence have yielded a detailed record of Danian high-latitude microplankton evolution. In addition, stable carbon isotope analyses of planktonic and benthic foraminifer and bulk samples provide a record of late Maestrichtian and early Danian surface- and deep-water carbon isotope variations. Together, the carbon isotope and carbonate accumulation records serve as an index of regional marine net productivity across the boundary. Earliest Danian nannoplankton assemblages consisted mainly of persistent genera that were generally rare or absent in the Upper Cretaceous at Hole 750A. However, by 0.5-0.6 m.y. after the boundary, newly evolving Danian taxa became dominant. The turnover in nannofossil assemblages was accompanied by significant changes in rates of net productivity as gauged by carbon isotope distributions and carbonate accumulation rates. During the period dominated by persistent taxa, net productivity was extremely low, as reflected by the absence of vertical delta13C gradients and reduced carbonate accumulation rates. Later in the Danian, as new species evolved and flourished, vertical delta13C gradients reappeared and carbonate accumulation rates increased, signaling partial recovery of net productivity in this region. The absolute timing and magnitude of late Maestrichtian and early Danian biotic and geochemical changes in the southern Indian Ocean were similar to those recorded in other pelagic K/P boundary sequences from low- and mid-latitude Atlantic and Pacific sites, indicating that these events were ubiquitous.
    Keywords: 120-750A; DRILL; Drilling/drill rig; Joides Resolution; Leg120; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 7
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    Paleogene benthic foraminifera from the Kerguelen Plateau (1992)
    PANGAEA
    In:  Supplement to: Mackensen, Andreas; Berggren, William A (1992): Paleogene benthic foraminifers from the southern Indian Ocean (Kerguelen Plateau): biostratigraphy and paleoecology. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 603-630, https://doi.org/10.2973/odp.proc.sr.120.168.1992
    Details
    Publication Date: 2024-01-09
    Description: Benthic foraminifers were studied from lower Paleocene through upper Oligocene sections from Sites 747 and 748. The composition of the benthic foraminifer species suggests a middle to lower bathyal (600-2000 m) paleodepth during the Neogene and a probable upper abyssal (2000-3000 m) paleodepth during the Paleocene at Site 747. Site 748 is thought to have remained at middle to lower bathyal paleodepths throughout the Cenozoic. Principal component analysis distinguished four major benthic foraminifer assemblages: (1) a Paleocene Stensioina beccariiformis assemblage at Sites 747 and 748, (2) an early Eocene Nuttallides truempyi assemblage at lower bathyal Site 747, (3) an early through middle Eocene Stilostomella-Lenticulina assemblage at middle bathyal Site 748, and (4) a latest Eocene through Oligocene Cibicidoides-Astrononion pusillum assemblage at both sites. Major benthic foraminifer changes, as indicated by the principal components and first and last appearances, occurred at or close to the Paleocene/Eocene boundary, and in the late Eocene close to the middle/late Eocene boundary.
    Keywords: 120-747; 120-747A; 120-747C; 120-748B; 120-748C; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg120; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean
    Type: Dataset
    Format: application/zip, 7 datasets
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  • 8
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    Stable isotope record and trace element ratios of Eocene and Oligocene foraminifers from ODP Site 120-748 (1992)
    PANGAEA
    In:  Supplement to: Zachos, James C; Berggren, William A; Aubry, Marie-Pierre; Mackensen, Andreas (1992): Isotope and trace element geochemistry of Eocene and Oligocene foraminifers from Site 748, Kerguelen Plateau. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 839-854, https://doi.org/10.2973/odp.proc.sr.120.183.1992
    Details
    Publication Date: 2024-01-09
    Description: Stable carbon and oxygen isotope analyses were conducted on well-preserved planktonic and benthic foraminifers from a continuous middle Eocene to Oligocene sequence at Ocean Drilling Program (ODP) Site 748 on the Kerguelen Plateau. Benthic foraminifer d18O values show a 1.0 per mil increase through the middle and upper Eocene, followed by a rapid 1.2 per mil increase in the lowermost Oligocene (35.5 Ma). Surface-dwelling planktonic foraminifer d18O values increase in the lowermost Oligocene, but only by 0.6 per mil whereas intermediate-depth planktonic foraminifers show an increase of about l.0 per mil. Benthic foraminifer d13C values increase by 0.9 per mil in the lowermost Oligocene at precisely the same time as the large d18O increase, whereas planktonic foraminifer d13C values show little or no change. Site 748 oxygen isotope and paleontological records suggest that southern Indian Ocean surface and intermediate waters underwent significant cooling from the early to late Eocene. The rapid 1.2 per mil oxygen isotope increase recorded by benthic foraminifers just above the Eocene/Oligocene boundary represents the ubiquitous early Oligocene d18O event. The shift here is unique, however, as it coincided with the sudden appearance of ice-rafted debris (IRD), providing the first direct link between Antarctic glacial activity and the earliest Oligocene d18O increase. The d18O increase caused by the ice-volume change in the early Oligocene is constrained by (1) related changes in the planktonic to benthic foraminifer d18O gradient at Site 748 and (2) comparisons of late Eocene and early Oligocene planktonic foraminifer d18Ovalues from various latitudes. Both of these records indicate that 0.3 per mil to 0.4 per mil of the early Oligocene d18O increase was ice-volume related.
    Keywords: 120-748; 120-748B; 120-748C; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg120; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean
    Type: Dataset
    Format: application/zip, 6 datasets
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    DATA PANGAEA
  • 9
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    (Table 2) Abundances of nannofossils in the lower Danian of ODP Hole 120-750A (1992)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 120-750A; Cruciplacolithus spp.; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Hornibrookina spp.; Joides Resolution; Leg120; Nannofossils indeterminata; Ocean Drilling Program; ODP; Prinsius spp.; Sample code/label; South Indian Ridge, South Indian Ocean; Thoracosphaera spp.
    Type: Dataset
    Format: text/tab-separated-values, 112 data points
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  • 10
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    (Figure 6) Range chart of planktonic foraminifers across the K/T boundary at ODP Hole 120-750A (1992)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 120-750A; Abathomphalus mayaroensis; Chiloguembelina morsei; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Eoglobigerina edita; Eoglobigerina eobulloides; Epoch; Globanomalina archeocompressa; Globanomalina planocompressa; Globigerinelloides messinae; Globigerinelloides subcarinatus; Globoconusa daubjergensis; Guembelitria cretacea; Guembelitria sp.; Guembelitria trifolia; Hedbergella monmouthensis; Heterohelix sp.; Joides Resolution; Leg120; Ocean Drilling Program; ODP; Paragloborotalia pseudobulloides; Paragloborotalia taurica; Planktic foraminifera zone; Praeglobotruncana havanensis; Rugoglobigerina macrocephala; Rugoglobigerina pustula; Rugoglobigerina rugosa; Sample code/label; South Indian Ridge, South Indian Ocean; Subbotina trivialis; Woodringina claytonensis; Woodringina hornerstownensis
    Type: Dataset
    Format: text/tab-separated-values, 401 data points
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    DATA PANGAEA
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