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  • 1
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Cretaceous Bryozoa from the Campanian and Maastrichtian of the Atlantic and Gulf Coastal Plains, United States (2006)
    Leiden : Nationaal Natuurhistorisch Museum Naturalis
    Dazugehörige Bände
    Details Verfügbarkeit
    Signatur: S 93.0422(132)
    In: Scripta geologica
    Materialart: Schriftenreihen ausleihbar
    Seiten: 346 S. , Ill., graph. Darst.
    ISBN: 9063910029
    Serie: Scripta geologica 132
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    Bryoliths constructed by bryozoans in symbiotic associations with hermit crabs, Golfe d'Arguin, Mauritania
    PANGAEA
    In:  Supplement to: Klicpera, André; Taylor, Paul D; Westphal, Hildegard (2013): Bryoliths constructed by bryozoans in symbiotic associations with hermit crabs in a tropical heterozoan carbonate system, Golfe d'Arguin, Mauritania. Marine Biodiversity, 43(4), 429-444, https://doi.org/10.1007/s12526-013-0173-4
    Details
    Publikationsdatum: 2023-05-12
    Beschreibung: The Golfe d'Arguin offshore of northern Mauritania hosts a rare modern analogue for heterozoan carbonate production in a tropical marine setting. Dominated by ocean upwelling and with additional fertilisation by iron-rich aeolian dust, this naturally eutrophic marine environment lacks typical photozoan communities. A highly productive, tropical cosmopolitan biota dominated by molluscs and suspension-feeders such as bryozoans and balanids characterises the carbonate-rich surface sediments. Overall biodiversity is relatively low and the species present are tolerant against the eutrophic and low-light conditions, the strong hydrodynamic regime governed by ocean upwelling, and the unstable, soft-bottom seafloor with few hard substrata. Here, we describe an ectosymbiosis between the hermit crab Pseudopagurus granulimanus (Miers, 1881) and monospecific assemblages of the encrusting cheilostome bryozoan Acanthodesia commensale (Kirkpatrick and Metzelaar, 1922) that cohabits vacant gastropod shells. Nucleating on an empty gastropod shell, the bryozoan colonies form multilamellar skeletal crusts that produce spherical encrustations and extend the living chamber of the hermit crab through helicospiral tubular growth. This non-obligate mutualistic symbiosis illustrates the adaptive capabilities and benefits from a close partnership in a complex marine environment, driven by trophic conditions, high water energies and instable substratum. Sectioned bryoliths show that between 49 and 97 % of the solid volume of the specimens consists of bryozoan skeleton.
    Schlagwort(e): Center for Marine Environmental Sciences; MARUM
    Materialart: Dataset
    Format: application/zip, 2 datasets
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    (Table 1) Age, location, and depositional environment information for hardgrounds (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-12-11
    Schlagwort(e): 1; 10; 11; 12; 13; 14; 15; 16; 17; 2; 3; 4; 5; 6; 7; 8; 9; Age, comment; Avon Park Formation, USA; carbonate hard grounds; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-06; CHC-07; CHC-08; CHC-09; CHC-10; CHC-11; CHC-12; CHC-13; CHC-14; CHC-15; CHC-16; CHC-17; Enewetak Atoll, Marshalls Islands; Environment; Eskett Limestones, England; Event label; Furongian, Banff National Park; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Kanosh Formation, Utah; Latemar Formation; LATITUDE; Location; LONGITUDE; Marjuman, Banff National Park; Meerssen Member, the Netherlands; Mg/Ca ratios; Mussafah Channel Hardground, UAE; Period; Qishn Formation, Oman; Reference/source; Sample code/label; Stage; strontium isotopes; Suwannee Limestone, USA; Upper Greensands, Devon, UK
    Materialart: Dataset
    Format: text/tab-separated-values, 119 data points
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    Chemical composition of carbonate hardground cements (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-12-11
    Beschreibung: Trace metal and isotopic ratios, including some rare earth elements, Mg/Ca, manganese and strontium concentrations, δ¹⁸O, δ¹³C, and ⁸⁷Sr/⁸⁶Sr, were analyzed in the carbonate cements from 17 Phanerozoic carbonate hardgrounds. The sensitivity of the geochemical signal to alteration depends on the geochemical analysis in question and the environmental water-rock ratio. Of these samples, only our modern sample has measurements consistent with primary precipitation from seawater; all other samples precipitated from chemically evolved seawater or were influenced by meteoric water, even if only minimally changed. The more recent samples from the Cenozoic had seawater ⁸⁷Sr/⁸⁶Sr. The Mesozoic samples, in contrast, did not preserve seawater ⁸⁷Sr/⁸⁶Sr, even though the Mg/Ca, δ¹⁸O, and δ¹³C values were consistent with precipitation from seawater. Finally, the Paleozoic samples preserved expected seawater ⁸⁷Sr/⁸⁶Sr, though REE and δ¹⁸O suggest primary precipitation was from evolved seawater. Additionally, we place our results in the context of open vs. closed system precipitation using transects of the Mg/Ca ratios across individual cements. Overall, we stress that one geochemical measurement provides only a partial record of fluid composition, but multiple measurements allow a potential understanding of the seawater geochemical signal.
    Schlagwort(e): carbonate hard grounds; Mg/Ca ratios; strontium isotopes
    Materialart: Dataset
    Format: application/zip, 7 datasets
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
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    (Table S1) Laser ablation strontium isotope analysis for hardgrounds (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-12-11
    Schlagwort(e): 1; 10; 11; 12; 16; 2; 3; 4; 5; 9; Age, comment; Avon Park Formation, USA; carbonate hard grounds; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-09; CHC-10; CHC-11; CHC-12; CHC-16; Enewetak Atoll, Marshalls Islands; Event label; Furongian, Banff National Park; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; LA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer; Latemar Formation; Latitude of event; Longitude of event; Mussafah Channel Hardground, UAE; Sample ID; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard deviation; strontium isotopes; Suwannee Limestone, USA
    Materialart: Dataset
    Format: text/tab-separated-values, 496 data points
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
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    (Table S3) Electron microprobe measurements analysis for hardgrounds (2020)
    PANGAEA
    Details
    Publikationsdatum: 2023-12-11
    Schlagwort(e): 1; 10; 11; 13; 14; 15; 16; 17; 2; 3; 4; 5; 6; 7; 8; 9; Age, comment; Avon Park Formation, USA; carbonate hard grounds; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-06; CHC-07; CHC-08; CHC-09; CHC-10; CHC-11; CHC-13; CHC-14; CHC-15; CHC-16; CHC-17; Electron microprobe (EMP); Enewetak Atoll, Marshalls Islands; Eskett Limestones, England; Event label; Furongian, Banff National Park; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Kanosh Formation, Utah; Latemar Formation; Latitude of event; Longitude of event; Magnesium; Magnesium/Calcium ratio; Manganese/Strontium ratio; Marjuman, Banff National Park; Meerssen Member, the Netherlands; Mg/Ca ratios; Mussafah Channel Hardground, UAE; Qishn Formation, Oman; Sample ID; Strontium; Suwannee Limestone, USA; Upper Greensands, Devon, UK
    Materialart: Dataset
    Format: text/tab-separated-values, 1602 data points
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
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    (Table S2) Elemental data raw results and internal standard errors for hardground samples (2020)
    PANGAEA
    Details
    Publikationsdatum: 2023-12-11
    Schlagwort(e): 1; 11; 12; 17; 2; 3; 4; 5; 9; Age, comment; Aluminium; Aluminium, standard error; Avon Park Formation, USA; Barium; Barium, standard error; Calcium; Calcium, standard error; carbonate hard grounds; Cerium; Cerium, standard error; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-09; CHC-11; CHC-12; CHC-17; Copper; Copper, standard error; Enewetak Atoll, Marshalls Islands; Event label; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Iron; Iron, standard error; LA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer; Lanthanum; Lanthanum, standard error; Latemar Formation; Latitude of event; Magnesium; Magnesium, standard error; Manganese; Manganese, standard error; Marjuman, Banff National Park; Mussafah Channel Hardground, UAE; Neodymium; Neodymium, standard error; Phosphorus; Phosphorus, standard error; Praseodymium; Praseodymium, standard error; Sample ID; Strontium; Strontium, standard error; Sulfur; Sulfur, standard error; Suwannee Limestone, USA; Thorium; Thorium, standard error; Titanium; Titanium, standard error; Uranium; Uranium, standard error; Yttrium; Yttrium, standard error; Zinc; Zinc, standard error
    Materialart: Dataset
    Format: text/tab-separated-values, 7960 data points
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
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    (Table 2) Lanthanum, cerium, praseodymium, neodymium and yttrium average shale-normalized values and cerium anomalies for hardground samples (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-12-11
    Schlagwort(e): 1; 10; 11; 12; 17; 2; 3; 4; 9; Age, comment; carbonate hard grounds; Cerium, normalized; Cerium anomaly; CHC-01; CHC-02; CHC-03; CHC-04; CHC-09; CHC-10; CHC-11; CHC-12; CHC-17; Enewetak Atoll, Marshalls Islands; Event label; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Lanthanum, normalized; Latemar Formation; Latitude of event; Longitude of event; Marjuman, Banff National Park; Mussafah Channel Hardground, UAE; Neodymium, normalized; Period; Praseodymium, normalized; Shale-normalized; Stage; Suwannee Limestone, USA; Yttrium, normalized
    Materialart: Dataset
    Format: text/tab-separated-values, 90 data points
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
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    (Table 3) Strontium, oxygen, and carbon isotopic measurements for hardground samples (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-12-11
    Schlagwort(e): 1; 10; 11; 12; 13; 14; 15; 16; 17; 2; 3; 4; 5; 6; 7; 8; 9; Age, comment; Avon Park Formation, USA; carbonate hard grounds; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-06; CHC-07; CHC-08; CHC-09; CHC-10; CHC-11; CHC-12; CHC-13; CHC-14; CHC-15; CHC-16; CHC-17; Enewetak Atoll, Marshalls Islands; Eskett Limestones, England; Event label; Furongian, Banff National Park; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Kanosh Formation, Utah; Latemar Formation; Latitude of event; Location; Longitude of event; Marjuman, Banff National Park; Meerssen Member, the Netherlands; Mussafah Channel Hardground, UAE; Number of measurements; Period; Qishn Formation, Oman; Sample code/label; Stage; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard deviation; strontium isotopes; Suwannee Limestone, USA; Upper Greensands, Devon, UK; δ13C, carbonate; δ18O, carbonate
    Materialart: Dataset
    Format: text/tab-separated-values, 168 data points
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
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    (Table 4) Manganese, strontium, and magnesium concentrations, along with proposed formational fluid Mg/Ca ratios, for hardground samples (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-12-11
    Schlagwort(e): 1; 10; 11; 12; 13; 14; 15; 16; 17; 2; 3; 4; 5; 6; 7; 8; 9; Age, comment; Avon Park Formation, USA; carbonate hard grounds; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-06; CHC-07; CHC-08; CHC-09; CHC-10; CHC-11; CHC-12; CHC-13; CHC-14; CHC-15; CHC-16; CHC-17; Enewetak Atoll, Marshalls Islands; Eskett Limestones, England; Event label; Furongian, Banff National Park; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Kanosh Formation, Utah; Latemar Formation; Latitude of event; Location; Longitude of event; Magnesium; Magnesium/Calcium ratio; Magnesium/Calcium ratio, standard error; Manganese/Strontium ratio; Marjuman, Banff National Park; Meerssen Member, the Netherlands; Mg/Ca ratios; Mussafah Channel Hardground, UAE; Number of measurements; Period; Qishn Formation, Oman; Sample code/label; Stage; Strontium; Suwannee Limestone, USA; Upper Greensands, Devon, UK
    Materialart: Dataset
    Format: text/tab-separated-values, 255 data points
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN PANGAEA
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