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  • Blackwell Publishing Ltd  (37)
  • PANGAEA
  • 2000-2004  (44)
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  • 1
    ISSN: 1748-7692
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Mesoplodon perrini, a new species of beaked whale is described on the basis of five animals stranded on the coast of California (between 32°55′N, 117°15′W and 36°37′N, 121°55′W) from May 1975 to September 1997. Four of these animals were initially identified as Hector's beaked whales M. hectori based on cranial morphology (Mead 1981). A fifth specimen was initially identified as a neonate Cuvier's beaked whale Ziphius cavirostris based on external features. These specimens were first recognized as representatives of an undescribed species through phylogenetic analysis of mitochondrial (mt) DNA control region and cytochrome b sequence data. Although similar morphologically, the genetic data do not support a close evolutionary relationship between M. perrini and M. hectori. Instead, these data suggest a possible sister species relationship with the lesser beaked whale M. peruvianus. Sightings of two small beaked whales off California in the 1970s which were tentatively identified as M. hectori are also likely to be M. perrini. We suggest that M. hectori is confined to the Southern Hemisphere, while M. perrini is known to date only from the North Pacific.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1748-7692
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Mesoplodon traversii (Gray, 1874) is shown to be a senior synonym of the recently described beaked whale Mesoplodon hahamondi Reyes et al., 1995 on the basis of a phylogenetic analysis of mitochondrial DNA control region sequences. The mandible and teeth of M. traversii, first reported in 1873 by Hector as Dolichodon layardii. are redescribed. The species can be distinguished by features of the calvaria; including the large jugal, broad rostrum, and small distance between premaxillary foramina. The male teeth, which are large and spade-shaped with a strong terminal denticle, are also diagnostic. M. traversii is known only from Pitt Island and White Island, New Zealand and Robinson Crusoe Island, Juan Fernandez Archipelago, Chile.
    Type of Medium: Electronic Resource
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  • 3
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: deMenocal, Peter B; Baker, Linda (2000): Data Report: Benthic stable isotope data from Sites 1014 and 1020 (0.6-1.2 Ma). In: Lyle, M; Koizumi, I; Richter, C; Moore, TC Jr (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 167, 1-6, https://doi.org/10.2973/odp.proc.sr.167.202.2000
    Publication Date: 2024-01-09
    Description: Benthic foraminiferal stable isotope data are presented for Sites 1014 (Tanner Basin, 1176 m) and 1020 (Gorda Ridge, 3040 m) to constrain past changes in Pacific deep- and intermediate-water nutrient chemistry associated with the onset of large-amplitude 100-k.y. climate cycles after ~900 ka. The Site 1014 data were based on analyses of separate species of Cibicidoides, whereas only Cibicidoides wuellerstorfi was used to generate the Site 1020 record. The present data span 380-920 and 620-950 ka at Sites 1014 and 1020, respectively.
    Keywords: Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 4
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    PANGAEA
    In:  Supplement to: Ukstins Peate, Ingrid; Baker, Joel A; Kent, Adam J R; Al-Kadasi, Mohamed; Al-Subbary, Abdulkarim; Ayalew, Dereje; Menzies, Martin (2003): Correlation of Indian Ocean tephra to individual Oligocene silicic eruptions from Afro-Arabian flood volcanism. Earth and Planetary Science Letters, 211(3-4), 311-327, https://doi.org/10.1016/S0012-821X(03)00192-4
    Publication Date: 2024-01-09
    Description: Widespread silicic pyroclastic eruptions of the Oligocene Afro-Arabian flood volcanic province (ignimbrites and airfall tuffs) produced up to 20% of the total flood volcanic stratigraphy (〉6*10**4 km**3). Volumes of individual ignimbrites and tuffs exposed on land range from ~150 to 〉2000 km**3 and eight major units (15-100 m thick) were erupted in 〈2 Myr, placing these amongst the largest-magnitude silicic pyroclastic eruptions on Earth. They are compositionally distinctive time-stratigraphic markers which were deposited as co-ignimbrite ashfall deposits on a near-global scale around the time of the Oi2 cooling anomaly at ~30 Ma. Two ignimbrites from the lower part of the flood volcanic succession in Yemen have been correlated to: (a) the conjugate rifted margin of Ethiopia (〉500 km distant); and (b) to two deep sea ash layers sampled by ODP Leg 115 in the Indian Ocean ~2700 km to the southeast. This correlation is based on whole rock analyses of silicic units for isotope ratios (Pb, Nd) and rare earth element compositions, in conjunction with novel in situ Pb isotope laser ablation multicollector inductively coupled plasma mass spectroscopy analysis of groundmass and glass shards. Compositional diversity preserved on the scale of individual ash shards in these deep sea tephra layers record chemical heterogeneity present in the silicic magma chambers that is not evident in the welded on-land deposits. Ages of the ash layers can be established by correlation to precisely dated on-land ignimbrites, and current evidence suggests that while these eruptions may have exacerbated already changing climatic conditions, they both marginally post-date the Oi2 global cooling anomaly.
    Keywords: 115-711A; DRILL; Drilling/drill rig; Joides Resolution; Leg115; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 5
    Publication Date: 2024-01-09
    Keywords: 167-1014; Age model; Age model, orbital tuning; Cibicidoides mckannai, δ13C; Cibicidoides mckannai, δ18O; Cibicidoides pachyderma, δ13C; Cibicidoides pachyderma, δ18O; Cibicidoides wuellerstorfi, δ13C; Cibicidoides wuellerstorfi, δ18O; COMPCORE; Composite Core; Depth, composite; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Joides Resolution; Leg167; Mass spectrometer Finnigan MAT 252; North Pacific Ocean; Ocean Drilling Program; ODP; Planulina ariminensis, δ13C; Planulina ariminensis, δ18O; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 795 data points
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  • 6
    Publication Date: 2024-01-09
    Keywords: 167-1020C; Age model; Age model, orbital tuning; Cibicidoides wuellerstorfi, δ13C; Cibicidoides wuellerstorfi, δ18O; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg167; Mass spectrometer Finnigan MAT 252; North Pacific Ocean; Ocean Drilling Program; ODP; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 312 data points
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  • 7
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: deMenocal, Peter B; Ortiz, Joseph D; Guilderson, Thomas P; Adkins, Jess F; Sarnthein, Michael; Baker, Linda; Yarusinsky, Martha (2000): Abrupt onset and termination of the African Humid Period: rapid climate responses to gradual insolation forcing. Quaternary Science Reviews, 19(1-5), 347-361, https://doi.org/10.1016/S0277-3791(99)00081-5
    Publication Date: 2024-01-09
    Description: A detailed (ca. 100 yr resolution) and well-dated (18 AMS 14C dates to 23 cal. ka BP) record of latest Pleistocene–Holocene variations in terrigenous (eolian) sediment deposition at ODP Site 658C off Cap Blanc, Mauritania documents very abrupt, large-scale changes in subtropical North African climate. The terrigenous record exhibits a well-defined period of low influx between 14.8 and 5.5 cal. ka BP associated with the African Humid Period, when the Sahara was nearly completely vegetated and supported numerous perennial lakes; an arid interval corresponding to the Younger Dryas Chronozone punctuates this humid period. The African Humid Period has been attributed to a strengthening of the African monsoon due to gradual orbital increases in summer season insolation. However, the onset and termination of this humid period were very abrupt, occurring within decades to centuries. Both transitions occurred when summer season insolation crossed a nearly identical threshold value, which was 4.2% greater than present. These abrupt climate responses to gradual insolation forcing require strongly non-linear feedback processes, and current coupled climate model studies invoke vegetation and ocean temperature feedbacks as candidate mechanisms for the non-linear climate sensitivity. The African monsoon climate system is thus a low-latitude corollary to the bi-stable behavior of high-latitude deep ocean thermohaline circulation, which is similarly capable of rapid and large-amplitude climate transitions.
    Keywords: 108-658C; Age, 14C AMS; Age, 14C calibrated; Age, comment; Age, dated; Age, dated standard deviation; Age, maximum/old; Age, minimum/young; Canarias Sea; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg108; Ocean Drilling Program; ODP; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 129 data points
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  • 8
    Publication Date: 2024-01-09
    Keywords: 115-711A; Aluminium oxide; Aluminium oxide, standard deviation; Calcium oxide; Calcium oxide, standard deviation; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Electron microprobe (EMP); Grains, counted/analyzed; Iron oxide, Fe2O3; Iron oxide, Fe2O3, standard deviation; Joides Resolution; Leg115; Magnesium oxide; Magnesium oxide, standard deviation; Manganese oxide; Manganese oxide, standard deviation; Ocean Drilling Program; ODP; Potassium oxide; Potassium oxide, standard deviation; Rock type; Sample code/label; Sample type; Silicon dioxide; Silicon dioxide, standard deviation; Sodium oxide; Sodium oxide, standard deviation; South Indian Ridge, South Indian Ocean; Titanium dioxide; Titanium dioxide, standard deviation; Zirconium/Niobium ratio
    Type: Dataset
    Format: text/tab-separated-values, 184 data points
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  • 9
    Publication Date: 2024-01-09
    Keywords: 115-711A; Barium; Barium, standard deviation; Cerium; Cerium, standard deviation; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Dysprosium; Dysprosium, standard deviation; Erbium; Erbium, standard deviation; Europium; Europium, standard deviation; Gadolinium; Grains, counted/analyzed; Inductively coupled plasma - mass spectrometry (ICP-MS); Joides Resolution; Lanthanum; Lanthanum, standard deviation; Lanthanum/Niobium ratio; Lanthanum/Samarium ratio; Lead-206/Lead-204 ratio; Lead-206/Lead-204 ratio, error; Lead-207/Lead-204 ratio; Lead-207/Lead-204 ratio, error; Lead-207/Lead-206, standard error; Lead-207/Lead-206 ratio; Lead-208/Lead-204 ratio; Lead-208/Lead-204 ratio, error; Lead-208/Lead-206 ratio; Lead-208/Lead-206 ratio, error; Leg115; Lutetium; Multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS); Neodymium; Neodymium, standard deviation; Neodymium-143/Neodymium-144 ratio; Niobium; Niobium, standard deviation; Number; Ocean Drilling Program; ODP; Praseodymium; Rubidium; Rubidium, standard deviation; Samarium; Samarium, standard deviation; Sample code/label; Sample code/label 2; Sample type; South Indian Ridge, South Indian Ocean; Strontium; Strontium, standard deviation; Vanadium; Vanadium, standard deviation; Ytterbium; Ytterbium, standard deviation; Yttrium; Yttrium, standard deviation; Zirconium; Zirconium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 398 data points
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 65 (2000), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A stochastic model estimating growth of Salmonella Enteritidis during egg collection, processing, storage, and transportation is described. The model contains equations for internal egg temperature, yolk membrane integrity, and exponential growth rate of S. Enteritidis. Monte Carlo simulations determined that no growth was likely to occur during the average 4.5 d of the egg's progression from lay through transportation. However, various time-temperature combinations affected the subsequent abuse an egg can withstand before S. Enteritidis growth begins. Scenarios demonstrated the relative importance of ambient air temperature and indicated the greatest safety improvements in this phase for shell eggs would result from preventing unrefrigerated storage or hastening cooling immediately after lay.
    Type of Medium: Electronic Resource
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