Download A Reassessment of the Southern Ocean Biochronology by Anthony T. S. Ramsay PDF

By Anthony T. S. Ramsay

The built-in method utilized within the research presents a reassessment of the stratigraphy formerly tested for the 18 holes which have been re-examined. The authors set out the present figuring out of Southern Ocean biochronology and provides a synthesis of biostratigraphical and polarity info from prior paintings. the amount might be a necessary reference for examining the palaeoceanography, climatic heritage and tectonic evolution of the Southern Ocean. It additionally presents a framework for courting oceanography and sedimentary occasions which are used as proxies for reading the glacial background of Antarctica. Paperback additionally to be had: monetary and Palaeoceanographic value of Contourite Deposits - designated book no 276 - ISBN 1862392269 the appliance of Ichnology to Palaeoenvironmental And Stratigraphic research (Geological Society precise booklet) - ISBN 1862391548 The Geological Society of LondonFounded in 1807, the Geological Society of London is the oldest geological society on the earth, and one of many biggest publishers within the Earth sciences.The Society publishes quite a lot of top quality peer-reviewed titles for teachers and execs operating within the geosciences, and enjoys an enviable foreign acceptance for the standard of its work.The many parts within which we put up in include:-Petroleum geology-Tectonics, structural geology and geodynamics-Stratigraphy, sedimentology and paleontology-Volcanology, magmatic stories and geochemistry-Remote sensing-History of geology-Regional geology publications

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Additional info for A Reassessment of the Southern Ocean Biochronology (Geological Society Memoir 18)

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1 O0 Fig. 8. A revised age-depth plot for D S D P Hole 514 using the biostratigraphical and polarity reversal events identified in this study and calibrated to the GPTS of Cande & Kent (1995). See Fig. 5 for legend of symbols. 3 mbsf representing a recovery of 77% of the cored interval. Sediments recovered consist of Quaternary to upper Miocene diatom ooze, Miocene to Palaeocene calcareous ooze with a variable siliceous component, and Upper Cretaceous chalk.

C2An. igidaria Nitzschia reinholdii Thalassiosira lentiginosa 73-75 70-72 72-74 72-74 C2An. 3n C3n. ln Nitzschia interJi'igidaria Data sets are integrated from the work of numerous authors (see Table 2). ~.. ~ ~ . ~ ~. , , ~ ~ ~ ~ ' ~ ~ ~:~ ruhnes ~ramillo )lduvai j. '1" l[ 50JaUSS 100- a. Gilbert l Fig. 7. Comparison of the D S D P Hole 514 polarity chronozones and diatom zonal assignments by previous workers with the chronozonal assignments of this study. The stratigraphical ranges of selected species are based on the original data sets (see text for references).

100 -__ 120 I 140 I I I I I I I I I I I I I i i I I I I I I I ~ 689B Magnetostratigraphy Depth mbsf SpieB Spie8 (1990) 11990) his ~ ~ ~ . ~ ~ ~ ~-. ~ ~ . ~ , ~ ~. ~ ~ ~ 9 ~: ~ ~ ~ ~ - . - - ~ ~ . . ~ ~ ~. ~- ~ ~ :~ .. ~ . m~n ~ . ~ ~ :~ ~ ' ~ I I i i ~ ~ ! 19! . 4 ~z~'! ~ ~-~-'~'~ ~ T. it~siena Fig. 10. Comparison of the ODP Hole 689B polarity chronozones and diatom zonal assignments by previous workers with the chronozonal assignments of this study. The stratigraphical ranges of selected stratigraphical indicators are based on the original data sets (see text for references).

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