984 resultados para Sadler, Michael Thomas, 1780-1835
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"This paper will explore an unstudied fifteenth-century English alabaster altarpiece referred to as the Martyrdom Altarpiece. Based on dated and current scholarship, this analysis postulates two scenarios of the object's history. The first scenario postulates the Martyrdom Altarpiece as being commissioned by the Carthusian order. This position is based on stylistic and iconographic readings of the object that correlate with Carthusian analogs. These interpretations are strengthened by documentation sold with the Martyrdom Altarpiece during its 1978 auction sale. Scenario two argues that the Martyrdom Altarpiece's origins are not Carthusian, furthermore suggesting that the object is a composite or truncated piece"
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The late Eocene through earliest Oligocene (40-32 Ma) spans a major transition from greenhouse to icehouse climate, with net cooling and expansion of Antarctic glaciation shortly after the Eocene/Oligocene (E/O) boundary. We investigated the response of the oceanic biosphere to these changes by reconstructing barite and CaCO3 accumulation rates in sediments from the equatorial and North Pacific Ocean. These data allow us to evaluate temporal and geographical variability in export production and CaCO3 preservation. Barite accumulation rates were on average higher in the warmer late Eocene than in the colder early Oligocene, but cool periods within the Eocene were characterized by peaks in both barite and CaCO3 accumulation in the equatorial region. We infer that climatic changes not only affected deep ocean ventilation and chemistry, but also had profound effects on surface water characteristics influencing export productivity. The ratio of CaCO3 to barite accumulation rates, representing the ratio of particulate inorganic C accumulation to Corg export, increased dramatically at the E/O boundary. This suggests that long-term drawdown of atmospheric CO2 due to organic carbon deposition to the seafloor decreased, potentially offsetting decreasing pCO2 levels and associated cooling. The relatively larger increase in CaCO3 accumulation compared to export production at the E/O suggests that the permanent deepening of the calcite compensation depth (CCD) at that time stems primarily from changes in deep water chemistry and not from increased carbonate production.
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Mode of access: Internet.
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Vol. 1-6, text, paged continuously; v. 7-16, music, paged continuously.
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With parts and biographical sketches of American composers.
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Mode of access: Internet.
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"Edina, Scotia's darling seat."--Dr. Chalmers: his life and opinions.--An academic trio--Dr. David Welsh, "Christopher North," Sir William Hamilton.--An Edinburgh brotherhood--Agostino Ruffini.--Hugh Miller.--Thomas De Quincey .--Aberdeen and its traditions.--"The Doctor"--James Kidd.-- Aberdeen grammar school--Dr. Melvin.--Marischal college and its professors.--Personal memories and friendships.--Index.
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Sabin 21904
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Vol. 3, printed for William Collins.
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LC copy 1 imperfect: v. 2, p. 383 wanting.
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Mode of access: Internet.
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Mode of access: Internet.