Won M Z (3 results)
High-resolution stratigraphy and the response of biota to Late Cenozoic environmental changes in the central equatorial Pacific Ocean (Manihiki Plateau)
Beiersdorf, H., Bickert, T., Cepek, P., Fenner, J., Petersen, N., Schönfeld, J., Weiss, W. & Won, M.-Z.
Seller: ConchBooks, Harxheim, , GermanyConchBooks
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An undisturbed 16 m late Pliocene-Pleistocene sediment core spanning 2.6 Myr of deposition was recovered from the Manihiki Plateau by the German research vessel Sonne in 1990. This core 34KL complements the heavily disturbed late Pliocene-Pleistocene core sections of DSDP Site 317, and is well suited for stratigraphic correlatio…n. The sediments consist of calcareous microfossils (93-97% CaCO3), minor portions of siliceous microfossils and detrital minerals. All important calcareous microfossil zones could be identified and correlated with the magnetostratigraphic and isotope stratigraphic events, stages and periods. Due to the high degree of silica dissolution, the late Quaternary radiolarian Buccinosphaera invaginata Zone is the only siliceous fossil zone which could be identified. An interval with Globigerinoides gomitulus/pink was found within the middle Pleistocene which is clearly distinguished from the Globigerinoides ruber/pink interval of the late Pleistocene. The magnetostratigraphic Gauss-Matuyama and Matuyama-Brunhes boundaries as well as the Olduvai and Jaramillo events were clearly identified. The ?180 curve displays the 100 kyr (Milankovitch) and the 41 kyr (Laplace) cyclicity periods. The beginning of the Laplace Period and the last occurrence of the calcareous nannofossil Discoaster brouweri, which marks the end of the Pliocene, fall within the base of the Olduvai Event. There is also a marked drop in sedimentation rates around this time, which seems to be a regional phenomenon. Prominent 3.5 kHz subbottom reflectors at 8 ms and 15 ms reflection time are related to lithologic changes near the Mid-Pleistocene Revolution (MPR) and the beginning of the Laplace Period or the Pleistocene, respectively. It is possible to trace these reflectors laterally to the eroded eastern edge of the Manihiki Plateau where they can be tied to older strata. 31 pp., 15 figs, gr. 8.
Handbook of Automotive Power Electronics and Motor Drives: 125 (Electrical and Computer Engineering)
Language: English
Published by CRC Press 2005-05-25 2005
Series: Electrical and Computer Engineering, Book 8 of 55. Book 8 of 55 - Electrical and Computer Engineering
- Hardcover
Seller: Chiron Media, Wallingford, , United KingdomChiron Media
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Hardcover. Condition: New.
Language: German
Seller: Dr. Frank Rudolph, Steinfeld, D, GermanyDr. Frank Rudolph
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37 S., 11 Abb., 4 Tab., 5 Taf., Palaeontographica, Band 304 (1-6). Original-Preis 395,- . Sprache: Deutsch Gewicht in Gramm: 1500.
