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  • 1
    Series available for loan
    Series available for loan
    Larger foraminifera as marine environmental indicators (2002)
    Leiden
    Associated volumes
    Details Availability
    Call number: S 93.0422(124)
    In: Scripta geologica
    Type of Medium: Series available for loan
    Pages: 263 S.
    Series Statement: Scripta geologica 124
    Classification:
    Oceanology
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Flying high: on the airborne dispersal of aquatic organisms as illustrated by the distribution histories of the gastropod genera Tryonia and Planorbarius (1999)
    Springer
    Netherlands journal of geosciences 78 (1999), S. 165-174 
    Details
    ISSN: 1573-9708
    Keywords: avian dispersion ; aquatic taxa ; biogeography ; distribution ; Gastropoda ; Mollusca
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The actual and fossil distribution patterns of the aquatic gastropod genera Tryonia and Planorbarius indicate that avian dispersal was an important dispersal mechanism in the geological past. Combining the distribution histories of these genera with ecological data on modern relatives provides insights into the process of dispersal of aquatic taxa in general. Avian dispersal of aquatic taxa is facilitated by a variety of factors, including mass occurrence in resting/foraging places of migrating birds, ways to attach to the birds and to overcome desiccation during flight, as well as easy reproduction from a single specimen when introduced into a new habitat. The uncertain taxonomical status of aquatic organisms, as well as biased preservation and sampling, provide serious drawbacks for understanding the importance of aerial dispersal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003766516646
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  • 3
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    Onset of Maikop sedimentation and cessation of Eocene arc volcanism in the Talysh Mountains, Azerbaijan (2015)
    Geological Society (of London)
    Details
    Publication Date: 2015-10-31
    Description: The Maikop Series forms an important source rock in the former Paratethys. Deposition is often interpreted as anoxic, linked to restriction of the Paratethys. The Pirembel formation in the Talysh Mountains (Azerbaijan) is attributed to the Maikop Series and was deposited above the Eocene volcanic Peshtasar formation. Dating the onset of anoxia could help to distinguish glacio-eustatic from tectonic causes of restriction. We integrated magnetostratigraphy and biostratigraphy to date the onset of Pirembel sedimentation and used geochemistry to characterize the tectonic setting of the Peshtasar volcanic rocks. The onset of Maikop sedimentation in the Talysh was determined to be 37.7 Ma, ruling out a link with the major sea-level drop at the Eocene–Oligocene Transition (33.9 Ma) and favouring a tectonic cause. Extrapolating the average sedimentation rate (34 cm kyr) suggests that the entire Pirembel formation belongs to the Late Eocene. We hypothesize that the end of volcanism is important in the transition to Pirembel sedimentation. The palaeomagnetic and geochemistry results for the volcanic rocks cluster in three groups, suggesting three distinct episodes of volcanism. Volcanic sills within the Eocene Arkevan formation plot exactly on these groups, confirming the relationship between the Arkevan and Peshtasar formations. Volcanic rocks of the Talysh show continental-arc signatures and may be related to an Eocene volcanic belt extending towards southeastern Iran. Supplementary material: The full analytical data of the Ar–Ar dating are available at http://www.geolsoc.org.uk/SUP18851
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
    Published by Geological Society (of London)
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  • 4
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    EOCENE-MIOCENE SHALLOW-WATER CARBONATE PLATFORMS AND INCREASED HABITAT DIVERSITY IN SARAWAK, MALAYSIA (2014)
    Society for Sedimentary Geology (SEPM)
    In: PALAIOS
    Details
    Publication Date: 2014-10-22
    Description: The Indo-Pacific marine biodiversity hotspot originated between the late Eocene and the early Miocene. Its origin coincides with an increase in availability of shallow-marine habitats driven by the opening of the South China Sea and the collision of Australia with the Pacific arcs and the southeast Asian margin. However, little is known about the distribution and diversity of past Indo-Pacific marine habitats. Understanding habitat diversity is key for understanding the significance of biodiversity origins and a necessary prerequisite for interpreting biodiversity patterns through time. Here we describe and interpret past carbonate platform environments in Sarawak, Malaysia during a time of active tectonism. We examine upper Eocene to lower Miocene marine shallow-water carbonate deposits from six localities in two limestone formations: the large ramplike Melinau carbonate platform (middle Eocene to early Miocene) and the unattached Subis carbonate platform (early Miocene). Deposits examined in this study represent paleoenvironments. Our analysis reveals an increase in habitat diversity from the Eocene to the Miocene. Mesophotic to oligophotic low-energy environments are typical for the Eocene sites. The corals first appear in the Oligocene deposits, but genuine reef depositional settings are not observed until the Miocene. This study provides both insight into the evolution of the carbonate platform environments along the Sarawak margin, and context for the origin of the Indo-Pacific marine biodiversity hotspot.
    Print ISSN: 0883-1351
    Electronic ISSN: 0883-1351
    Topics: Geosciences
    Published by Society for Sedimentary Geology (SEPM)
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  • 5
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    Tensor network states in time-bin quantum optics (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-06-06
    Description: Author(s): Michael Lubasch, Antonio A. Valido, Jelmer J. Renema, W. Steven Kolthammer, Dieter Jaksch, M. S. Kim, Ian Walmsley, and Raúl García-Patrón The current shift in the quantum optics community towards experiments with many modes and photons necessitates new classical simulation techniques that efficiently encode many-body quantum correlations and go beyond the usual phase-space formulation. To address this pressing demand we formulate line... [Phys. Rev. A 97, 062304] Published Tue Jun 05, 2018
    Keywords: Quantum information
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 6
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    Are coral reefs victims of their own past success? (2016)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2016-04-28
    Description: As one of the most prolific and widespread reef builders, the staghorn coral Acropora holds a disproportionately large role in how coral reefs will respond to accelerating anthropogenic change. We show that although Acropora has a diverse history extended over the past 50 million years, it was not a dominant reef builder until the onset of high-amplitude glacioeustatic sea-level fluctuations 1.8 million years ago. High growth rates and propagation by fragmentation have favored staghorn corals since this time. In contrast, staghorn corals are among the most vulnerable corals to anthropogenic stressors, with marked global loss of abundance worldwide. The continued decline in staghorn coral abundance and the mounting challenges from both local stress and climate change will limit the coral reefs’ ability to provide ecosystem services.
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Australian shelf sediments reveal shifts in Miocene Southern Hemisphere westerlies (2017)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2017-05-11
    Description: Global climate underwent a major reorganization when the Antarctic ice sheet expanded ~14 million years ago (Ma) ( 1 ). This event affected global atmospheric circulation, including the strength and position of the westerlies and the Intertropical Convergence Zone (ITCZ), and, therefore, precipitation patterns ( 2 – 5 ). We present new shallow-marine sediment records from the continental shelf of Australia (International Ocean Discovery Program Sites U1459 and U1464) providing the first empirical evidence linking high-latitude cooling around Antarctica to climate change in the (sub)tropics during the Miocene. We show that Western Australia was arid during most of the Middle Miocene. Southwest Australia became wetter during the Late Miocene, creating a climate gradient with the arid interior, whereas northwest Australia remained arid throughout. Precipitation and river runoff in southwest Australia gradually increased from 12 to 8 Ma, which we relate to a northward migration or intensification of the westerlies possibly due to increased sea ice in the Southern Ocean ( 5 ). Abrupt aridification indicates that the westerlies shifted back to a position south of Australia after 8 Ma. Our midlatitude Southern Hemisphere data are consistent with the inference that expansion of sea ice around Antarctica resulted in a northward movement of the westerlies. In turn, this may have pushed tropical atmospheric circulation and the ITCZ northward, shifting the main precipitation belt over large parts of Southeast Asia ( 4 ).
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
    Published by American Association for the Advancement of Science (AAAS)
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  • 8
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    Detector-Independent Verification of Quantum Light (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-04-22
    Description: Author(s): J. Sperling, W. R. Clements, A. Eckstein, M. Moore, J. J. Renema, W. S. Kolthammer, S. W. Nam, A. Lita, T. Gerrits, W. Vogel, G. S. Agarwal, and I. A. Walmsley Criteria are formulated and experimentally verified for optical measurement schemes that probe nonclassical properties of light and are independent of the detector architecture used. [Phys. Rev. Lett. 118, 163602] Published Fri Apr 21, 2017
    Keywords: Atomic, Molecular, and Optical Physics
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 9
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    Identification of nonclassical properties of light with multiplexing layouts (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-07-07
    Description: Author(s): J. Sperling, A. Eckstein, W. R. Clements, M. Moore, J. J. Renema, W. S. Kolthammer, S. W. Nam, A. Lita, T. Gerrits, I. A. Walmsley, G. S. Agarwal, and W. Vogel In Sperling et al. [ Phys. Rev. Lett. 118 , 163602 (2017) ], we introduced and applied a detector-independent method to uncover nonclassicality. Here, we extend those techniques and give more details on the performed analysis. We derive a general theory of the positive-operator-valued measure that desc… [Phys. Rev. A 96, 013804] Published Thu Jul 06, 2017
    Keywords: Quantum optics, physics of lasers, nonlinear optics, classical optics
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 10
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    DATING BORNEO'S DELTAIC DELUGE: MIDDLE MIOCENE PROGRADATION OF THE MAHAKAM DELTA (2015)
    Society for Sedimentary Geology (SEPM)
    In: PALAIOS
    Details
    Publication Date: 2015-02-27
    Description: Borneo's geologic and paleontological history remains poorly understood because of the lack of outcrops and difficulties with dating. Urban development around the city of Samarinda has produced over four kilometers of well-exposed stratigraphy depicting the progradation of the ancient Mahakam river delta across the Samarinda area, which includes slope, shelf, and deltaic deposits (clastic and carbonate). Previous studies have preliminarily dated the succession as middle Miocene, but reworking and the scarcity of diagnostic fossils make dating difficult. In this paper, an integrated stratigraphic age model has been constructed for the middle Miocene of the Samarinda region with a combination of magnetostratigraphy, sequence stratigraphy, and biostratigraphy (nannofossil, planktonic foraminifera, and larger benthic foraminifera). This age model provides improved temporal constraints for part of the Mahakam Delta succession. It also helps to place the pattern of biodiversity changes seen in Indonesian reef communities into a better time perspective, and permits more accurate sedimentation rates to be determined. It may also serve as a reference point to compare other Neogene sections in Southeast Asia. The two reef complexes at Samarinda, the Batu Putih and the Stadion section, are magnetostratigraphically dated at ~ 15 Ma and 11.6 Ma, respectively. The new chronology for the Samarinda succession shows that the Mahakam Delta went through a major phase of buildout and progradation during the middle and earliest late Miocene, during which time progradation across the former shelf break took place in the Samarinda area.
    Print ISSN: 0883-1351
    Electronic ISSN: 0883-1351
    Topics: Geosciences
    Published by Society for Sedimentary Geology (SEPM)
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