401 resultados para Hepburn, Audrey


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Eight lithologic facies recognized in the Mississippi Fan sediments drilled during DSDP Leg 96 are defined on the basis of lithology, sedimentary structures, composition, and texture. Of these, the calcareous biogenic sediments are of minor importance, volumetrically, as compared with the dominant resedimented terrigenous facies. Clay, mud, and silt are the most abundant sediments at all the sites drilled, with some sand and gravel in the midfan channel fill and an abundance of sand on the lower fan. Facies distribution and vertical sequences reflect the importance of sediment type and supply in controlling fan development. Sea-level changes and diapiric activity have also played an important role. Clay and sand fraction mineralogy closely mirror the dominant sediment source, namely, the Mississippi River system and adjacent continental shelf. Local and regional variation in composition on the fan mostly reflects facies differences.

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Dinoflagellate cysts are useful for reconstructing upper water conditions. For adequate reconstructions detailed information is required about the relationship between modern day environmental conditions and the geographic distribution of cysts in sediments. This Atlas summarises the modern global distribution of 71 organicwalled dinoflagellate cyst species. The synthesis is based on the integration of literature sources together with data of 2405 globally distributed surface sediment samples that have been preparedwith a comparable methodology and taxonomy. The distribution patterns of individual cyst species are being comparedwith environmental factors that are knownto influence dinoflagellate growth, gamete production, encystment, excystment and preservation of their organic-walled cysts: surface water temperature, salinity, nitrate, phosphate, chlorophyll-a concentrations and bottom water oxygen concentrations. Graphs are provided for every species depicting the relationship between seasonal and annual variations of these parameters and the relative abundance of the species. Results have been compared with previously published records; an overview of the ecological significance as well as information about the seasonal production of each individual species is presented. The relationship between the cyst distribution and variation in the aforementioned environmental parameters was analysed by performing a canonical correspondence analysis. All tested variables showed a positive relationship on the 99% confidence level. Sea-surface temperature represents the parameter corresponding to the largest amount of variance within the dataset (40%) followed by nitrate, salinity, phosphate and bottom-water oxygen concentration, which correspond to 34%, 33%, 25% and 24% of the variance, respectively. Characterisations of selected environments as well as a discussion about how these factors could have influenced the final cyst yield in sediments are included.

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[L-R? Audrey "Audie" Hendon -customer rep, Ozalid operator; Robert Kalmbach- dark room printer; Lajos "Louis" Martonyi - photographer; Carmen Krasteff - Ozalid operator; Fred Anderegg - supervisor photographer; Karloyi "Karl" Kutasi - photographer; Lorene Fitzgerald - secretary; Willie Dobos - photographer; Wilhelmine Hoesl - lab assistant, Ilse Wiener - photostat operator, Karl Kalmbach - darkroom printer]

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"June 1987".

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Inserted bibliographic data sheet designates Audrey S. Hundermann as "author."

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Mode of access: Internet.

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"The names are transcribed by the modified Hepburn (Romaji) system of romanization."--p. ii.

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"Several of the stories composing this volume have appeared in Scribner's magazine."--Note.

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In two parts, paged continuously.

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Paperbound in green; silver title label.

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Signed: W.M. Hepburn, Librarian, January 31, 1908.

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Inserted bibliographic data sheet designates Audrey S. Hundemann as "editor."

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Reporters: Thomas C. Batchelor, v. 133-142; Margaret H. Pierce, v. 143-185; Audrey Bernhardt, v. 186-231.