caa a22 4500 469076968 CHVBK 20180323132937.0 cr unu---uuuuu 170328e19920901xx s 000 0 eng 10.1007/BF02507829 doi (NATIONALLICENCE)springer-10.1007/BF02507829 The CaCO3 profiles of deep and shallow Mediterranean sea cores as indicators of past solar-terrestrial relationships [Elektronische Daten] [G. Cini Castagnoli, G. Bonino, A. Provenzale, M. Serio, E. Callegari] Summary: We study the total carbonate profiles of three coastal cores extracted from the continental shelf in the Ionian Sea and of two deep-sea cores extracted from the Tyrrhenian abissal plane. An overall similarity between the two deep-sea profiles and among the three coastal profiles is observed, indicating the complete reproductibility of this type of experimental measurements. In the case of the coastal cores, a constant sedimentation rates=(0.0646±0.0007) cm/y has been determined by radiometric methods and by tephroanalysis. For the deep-sea cores, the spectra of the upper and lower halves of the carbonate depth profiles display the same periodic components, suggesting that the sedimentation rate is nearly the same along the entire deep cores as well. The use of a careful tephroanalysis, the recognition of the Ignimbrite layers of Campanian origin at the expected depths and the similarity between the upper part (5000y) of the carbonate profile of the deep-sea core with that of the coastal cores provide the indication that, on the average, 1 cm of sediment is deposited in about 100 y. We show that the trend of the carbonate record in the deep-sea core is well approximated by a signal obtained by linearly superposing the obliquity and the precession parameters of the Earth rotation axis. Since these astronomical factors contribute to the temporal variations of the Earth insolation, and since the CaCO3 content of the sediment is presumably affected by climatic factors, this result supports the evidence of astronomical control on the Earth's climate, as already pointed out by several authors who analysed the power spectra of δ18O, δD and CO2 temporal series from sediment and ice cores. After removal of the <<astronomical>> trend, the carbonate record displays a dominant periodicity at approximately 12000 y. The 12000 y wave, taken with the opposite sign, corresponds to the trend of the radiocarbon record in tree-rings. This result becomes particularly relevant in view of the existence of common periodicities of about 200 y waves (Suess wiggles) which have already been detected in the carbonate profiles of the coastal cores and in tree-ring radiocarbon data. Società Italiana di Fisica, 1992 Climatology nationallicence Solar radiation nationallicence Marine geology and geophisics nationallicence Cini Castagnoli G. Istituto di Cosmogeofisica del CNR, C. so Fiume 4, 10133, Torino aut Bonino G. Istituto di Cosmogeofisica del CNR, C. so Fiume 4, 10133, Torino aut Provenzale A. Istituto di Cosmogeofisica del CNR, C. so Fiume 4, 10133, Torino aut Serio M. Istituto di Cosmogeofisica del CNR, C. so Fiume 4, 10133, Torino aut Callegari E. Dipartimento di Scienze Mineralogiche e Petrologiche dell'Università, Via Valperga Caluso, Torino, Italia aut Il Nuovo Cimento C Kluwer Academic Publishers 15/5(1992-09-01), 547-563 0390-5551 15:5<547 1992 15 11543 https://doi.org/10.1007/BF02507829 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02507829 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cini Castagnoli G. Istituto di Cosmogeofisica del CNR, C. so Fiume 4, 10133, Torino aut NATIONALLICENCE 700 1- Bonino G. Istituto di Cosmogeofisica del CNR, C. so Fiume 4, 10133, Torino aut NATIONALLICENCE 700 1- Provenzale A. Istituto di Cosmogeofisica del CNR, C. so Fiume 4, 10133, Torino aut NATIONALLICENCE 700 1- Serio M. Istituto di Cosmogeofisica del CNR, C. so Fiume 4, 10133, Torino aut NATIONALLICENCE 700 1- Callegari E. Dipartimento di Scienze Mineralogiche e Petrologiche dell'Università, Via Valperga Caluso, Torino, Italia aut NATIONALLICENCE 773 0- Il Nuovo Cimento C Kluwer Academic Publishers 15/5(1992-09-01), 547-563 0390-5551 15:5<547 1992 15 11543 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer