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  • 1
    Online Resource
    Online Resource
    Zurich :Trans Tech Publications, Limited,
    Keywords: Electronic books.
    Description / Table of Contents: Proceedings of the Fifth International Symposium on the Jurassic System, held in Vancouver, Canada, August 12-25, 1998.
    Type of Medium: Online Resource
    Pages: 1 online resource (549 pages)
    Edition: 1st ed.
    ISBN: 9783035739893
    Series Statement: Retrospective Collection ; v.Volume 41
    Language: English
    Note: Advances in Jurassic Research 2000 -- Introduction -- Table of Contents -- Timescales and Correlation -- Upper Sinemurian Ammonite Successions Based on 41 Faunal Horizons: An Attempt at Worldwide Correlations -- The Proposed GSSP for the Base of the Sinemurian Stage Near East Quantoxhead/West Somerset (SW England) - the Ammonite Sequence -- The Basal Jurassic Ammonite Succession in the North-West European Province - Review and New Results -- On the proposed Basal Boundary Stratotype (GSSP) of the Middle Jurassic Callovian Stage -- Oxfordian Biostratigraphy from the Lugar Section (External Subbetic, Southern Spain) -- Early to Middle Jurassic Magmatism: New Zircon U-Pb Ages and Comparative Geochemistry from a Crustal Transect through the Bonnanza Arc on Vancouver Island, Canada -- Zone Boundaries and Subzones of the Transversarium Ammonite Zone (Oxfordian, Late Jurassic) in the Reference Section of the Zone, Northern Switzerland -- Aalenian of the Zambujal de Alcaria Section (Central Lusitanian Basin -- Portugal) -- Foraminiferal Biostratigraphy of the Lower - Middle Jurassic Sequences in Eastern Arabia -- Ammonite Biostratigraphy of the Hettangian/Sinemurian Boundary in South America -- A Direct Correlation between North American and Japan-Pacific Radiolarian Zonal Schemes for the Upper Jurassic -- Biostratigraphical Correlations between the Subboreal Mutabilis Zone and the Submediterranean Upper Hypselocyclum - Divisum Zones of the Kimmeridgian: New Data from Northern Poland -- Strontium Isotope Stratigraphy of the Aalenian/Bajocian Auxilary Stratotype Point at Bearreraig, Isle of Skye, NW Scotland -- The Nature of Biostratigraphic Boundaries in the Early Middle Jurassic of South West Germany. , Correlation of Late Bathonian Ammonite Faunas between England and North East Spain and a Proposed Standard Zonation for the Upper Bathonian of Northern and Western Europe -- East Quantoxhead, Somerset: a Candidate Global Stratotype Section and Point for the Base of the Sinemurian Stage (Lower Jurassic) -- A New Marine Triassic-Jurassic Boundary Section in Hungary -- A Revised Numeric Time Scale for the Jurassic -- Upper Jurassic Foraminiferal Zones and Position of the Jurassic-Cretaceous Boundary in Western Siberia -- New Biostratigraphic Data from the Kimmeridgian/Tithonian Boundary Beds of SW Germany -- Immigration of Amoeboceratids into the Submediterranean Upper Jurassic of SW Germany -- The Canadensis Zone (Early Jurassic) in the Shoshone Mountains, Nevada -- The Triassic/Jurassic System Boundary in the Gabbes Formation, Nevada -- Recognition of Potential Palynoevents in the Jurassic Sequence of India and their Correlation in Australia -- Recent Advances in Upper Jurassic (Kimmeridgian - Tithonian) Ammonite Biostratigraphy of North-Central Mexico Based on Recently Collected Ammonite Assemblages -- New Results of the Jurassic Stratigraphic Study in the Nyalam Area of Southern Tibet -- Sequence Stratigraphy -- Sequence Stratigraphic Analysis of the Early and Middle Jurasssic Los Patillos Formation, La Ramada Basin (31030,-32030,SL), Argentina -- Sequence Stratigraphy of the Callovian-Berriasian (Middle Jurassic-Lower Cretaceous) of the Iberian Basin (NE Spain) -- Ammonite Taphocycles in Carbonate Epicontinental Platforms -- Definition and Organization of Limestone-Marl Cycles in the Toarcian of the Northern and East-Central Part of the Iberian Subplate (Spain) -- The Distribution of Foraminiferida in the Oxfordian Sequences of North Dorset, U.K. -- Transgressive Sediment Intervals in the Late Jurassic of Kachchh, India. , Discontinuities and Sequence Stratigraphy of the Antalo Limestone (Upper Jurassic, North Ethiopia) -- Geologic Evolution of the Lusitanian Basin (Portugal) during the Late Jurassic -- Jurassic Sequence Stratigraphy of East Greenland -- Paleontology and Biography -- Hispanic Corridor: Its Evolution and the Biogeography of Bivalve Molluscs -- Stratigraphic Distribution of Toarcian Brachiopods from the Iberian Range (Spain) and its Relation to Depositional Sequences -- A Systematic Summary of the Stratigraphic Distribution of Jurassic Rhynchonellide Genera (Brachiopoda) -- New Subcollina (Ammonitida) from the Topmost Lower Bajocian: Their Phylogenetic and Paleogeographic Significance -- Paleoecology and Biostratigraphic Resolution: Review of Jurassic Biostratigraphic Issues in the U.S.Western Interior -- Sedimentary Geology and Paleoenvironments -- Siliceous Sedimentation in the Mediterranean Jurassic Caused by Volcanism, Greenhouse Climate and Eutrophication -- A Jurassic Rift System in the Canadian Arctic Islands -- Lower-Middle Jurassic Rhythmites from the Lombard Basin, Italy: A Record of Orbitally Forced Carbonate Cycles Modulated by Secular Environmental Changes in West Tethys -- Benthic Foraminiferal Response to Pliensbachian - Toarcian (Lower Jurassic) Sea-Level Change and Oceanic Anoxia in NW Europe -- Jurassic Climatic Events of North China and their Geological Significance -- Biological and Physical Agents of Shell Concentrations of Lithiotis Facies Enhanced by Microstratigraphy and Taphonomy, Early Jurassic, Trento Area (Northern Italy) -- Stable Isotopic Signal of Carbon and Oxygen in Jurassic Marlstone-Limestone Rhythms (Italy,Central Apennines) -- Terrestrial Ecosystems -- Early Middle Jurassic Plant Communities in Northwest Scotland: Paleoecological and Paleoclimatic Signficance -- Jurassic Floras of North China. , Constraining Late Jurassic Paleoclimate within the Morrison Paleoecosystem: Insights from the Continental Carbonate Record of the Morrison Formation (Colorado,USA) -- The Taphonomy and Paleoecology of the Upper Jurassic Morrison Formation Determined from a Field Study of Fossil Localities -- Keyword Index.
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  • 2
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    Unknown
    PANGAEA
    In:  Supplement to: Them II, Theodore R; Gill, Benjamin C; Gröcke, Darren R; Tulsky, E T; Martindale, Rowan C; Poulton, T P; Smith, P L (2017): High-resolution carbon isotope records of the Toarcian Oceanic Anoxic Event (Early Jurassic) from North America and implications for the global drivers of the Toarcian carbon cycle. Earth and Planetary Science Letters, 459, 118-126, https://doi.org/10.1016/j.epsl.2016.11.021
    Publication Date: 2023-01-13
    Description: The Mesozoic Era experienced several instances of abrupt environmental change that are associated with instabilities in the climate, reorganizations of the global carbon cycle, and elevated extinction rates. Often during these perturbations, oxygen-deficient conditions developed in the oceans resulting in the widespread deposition of organic-rich sediments - these events are referred to as Oceanic Anoxic Events or OAEs. Such events have been linked to massive injections of greenhouse gases into the ocean- atmosphere system by transient episodes of voluminous volcanism and the destabilization of methane clathrates within marine environments. Nevertheless, uncertainty surrounds the specific environmental drivers and feedbacks that occurred during the OAEs that caused perturbations in the carbon cycle; this is particularly true of the Early Jurassic Toarcian OAE (ca. 183.1 Ma). Here, we present biostratigraphically constrained carbon isotope data from western North America (Alberta and British Columbia, Canada) to better assess the global extent of the carbon cycle perturbations. We identify the large negative carbon isotope excursion associated with the OAE along with high-frequency oscillations and steps within the onset of this excursion. We propose that these high-frequency carbon isotope excursions reflect changes to the global carbon cycle and also that they are related to the production and release of greenhouse gases from terrestrial environments on astronomical timescales. Furthermore, increased terrestrial methanogenesis should be considered an important climatic feedback during Ocean Anoxic Events and other similar events in Earth history after the proliferation of land plants.
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 3
    Publication Date: 2023-01-13
    Keywords: Calcium carbonate; Carbon, organic, total; HEIGHT above ground; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 787 data points
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  • 4
    Publication Date: 2023-01-13
    Keywords: Carbon, organic, total; HEIGHT above ground; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 284 data points
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  • 5
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Current research on the Earth's upper atmosphere requires molecular parameters of unprecedented detail and accuracy. For example, state-of-the-art models of the vacuum-ultraviolet (VUV) absorbing properties of the atmosphere call for absorption cross sections with details on the scale of the Doppler linewidths. As a consequence, spectroscopic data at resolving powers of the order of 106 are needed. Current particular needs are for ultra-high-resolution absorption cross-section data for some bands of NO and O2 in the 170–185 nm spectral region. To meet these requirements, an existing, portable, VUV Fourier-transform (FT) spectrometer will be moved to a synchrotron-radiation facility (Photon Factory, KEK, Japan) and VUV photoabsorption cross sections of NO and O2 will be measured. It has been demonstrated so far with emission line sources that the FT spectrometer will perform to ≤139 nm. Extension of work on absorption measurements to shorter wavelengths and with ultrahigh resolution requires an improved light source. Synchrotron radiation from a storage ring facility is the best alternative. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 1182-1184 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The residual extended defects due to end-of-range ion implantation damage can be totally eliminated by Ti silicidation. Shallow p+ junctions were formed by amorphizing the silicon with Ge implantation (85 keV, 1×1015 cm−2) prior to implanting boron (85 keV, 1×1015 cm−2), recrystallizing the amorphous region at 550 °C, and then rapid thermal annealing at 1050 °C for 10 s. A buried sheet of interstitial dislocation loops lying below the surface remained. However, following a self-aligned Ti silicide process, the end-of-range defects due to Ge ion implantation damage were no longer observed in cross-sectional transmission electron micrographs. The annihilation of these end-of-range interstitial dislocation loops is attributed to the injection of vacancies during Ti silicidation.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 664 (1992), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 24 (1993), S. 0 
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: High resolution ultrasound scanning was tested as a non-invasive technique for monitoring oocyte maturation and ovulalion in the Atlantic halibut Hippoglossus hippoglossus (L.). Female broodstock halibut were examined using a 7.5-Mhz linear ultrasound transducer, prior to and during spawning. Representative images of halibut ovaries are presented and discussed. Individual oocytes of spawning females were discernible during oocyte final maturation, due to the large increase in volume caused by water uptake. The yolky (vitellogenic) cocytes of pre-spawning fish were more reflective to ultrasound than hydrating oocytes. The resulting differences in depth of ultrasound penetration permitted easy distinction of pre-spawning from spawning females. In addition, short-term changes in the depth of ultrasound penetration were observed during repeated scanning of a spawning female, owing to progressive hydration of the oocyte batch destined for ovulation. Although of similar diameter, hydrating oocytes in the ovarian tissue could be discerned from eggs in the ovarian lumen because of the different acoustic properties of the surrounding media. The findings of the present study are considered promising for the future routine use of ultrasonography in halibut broodstock management.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 188 (1960), S. 1095-1096 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The measurements were made in a tetrahedral apparatus constructed at the National Physical Laboratory following a design of the National Bureau of Standards2. This allows the use of a standard hydraulic press. In our apparatus the pyrophyllite tetrahedron had a side of 3/4 in. and electrical ...
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 221 (1969), S. 941-941 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The external form of this specimen resembles an individual Yorkshire pudding with a fairly smooth rounded base but with pronounced "thumbprints" on the top surface. It is of a convenient size and weight for use as a hand-held hammer or anvil, and local surface deformation within the thumbprinted ...
    Type of Medium: Electronic Resource
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