The Ioffe Drift / Springer Geology (PDF)
(Sprache: Englisch)
The Discovery of the calcareous Ioffe Drift in the SW Atlantic in 2010 opens new perspectives in the contourite theory. Although demonstrating similar behavior relative to bottom water dynamics, rather rare and poorly studied calcareous contourites differ...
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The Discovery of the calcareous Ioffe Drift in the SW Atlantic in 2010 opens new perspectives in the contourite theory. Although demonstrating similar behavior relative to bottom water dynamics, rather rare and poorly studied calcareous contourites differ from their terrigenous analogs in origin, grain-size distribution, chemical and mineral composition of sedimentary particles. The detailed multidisciplinary study of the Ioffe Drift produces new knowledge on biogenic contourites deposited in pelagic realm, in conditions of low biological productivity and terrigenous material supply, under the influence of the Antarctic Bottom Water flow from the Vema Channel. The major intervals of prevailing erosion are inferred on the drift from 2.51/2.59 to 1.9 Ma and from 1.6 to 0.81 Ma thus indicating strong paleoceanographic changes most likely associated with the reorganization of deep-sea circulation and increased bottom water production in the Southern Ocean during the Early Pleistocene and,in particular, around the Mid-Pleistocene Transition.
Autoren-Porträt
Prof. Ivar Murdmaa, habilitated DSci on geology and mineralogy, Senior Researcher at Shirshov Institute of Oceanology RAS, participant of 37 marine expeditions including 4 deep sea drilling legs. His major scientific interests include lithology, sedimentology, facies and formations of oceanic sediments, ferromanganese nodules. During the last decade, he studied the lithology and formation of contourites from the Southern and Central Atlantic.Prof. Elena Ivanova, habilitated DSci on oceanology and marine geology, Head of the Laboratory of Paleoceanology at Shirshov Institute of Oceanology RAS, participant of 22 marine expeditions and Chief scientist in 6 of them, guest scientist at several research institutes in France, UK, Germany, USA. Her major scientific interests include mechanisms on global teleconnections based on the study of high-resolution paleodata timeseries, contourite stratigraphy and bottom-water circulation in the Southern and CentralAtlantic.
Bibliographische Angaben
- 2021, 1st ed. 2021, 195 Seiten, Englisch
- Herausgegeben: Ivar Murdmaa, Elena Ivanova
- Verlag: Springer International Publishing
- ISBN-10: 3030828719
- ISBN-13: 9783030828714
- Erscheinungsdatum: 25.10.2021
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- Grösse: 11 MB
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Sprache:
Englisch
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