Stratigraphie intégrée du sillon citrabétique(Sierra de Fontcalent, province d'Alicante, Espagne)

Rasplus, L.; Fourcade, Éric; Ambroise, D.; Andéol, Brigitte; Azéma, Jacques; Blanc, Philippe; Busnardo, Robert; Clerc-Renaud, Tania; Damotte, Renée; Dercourt, Jean; Foucault, A.; Galbrun, Bruno; Granier, Bruno; Lachkar, Georges; Hégarat, Gérard Le; Magné, Jean; Manivit, H.; Mangin, Anne-Marie; Masure, Edwige; Mazaud, Alain; Michaud, François; Morand, François; Renard, Maurice; Schuber, Nadine; Taugourdeau, J.

doi:10.1016/s0016-6995(87)80047-5

Cited by 11 publications

(3 citation statements)

References 9 publications

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“…In their study, Schnyder et al (2005) reported a major climate change with dry and cool phase, during the late Tithonian to early Berriasian transitioning to a more humid phase in the middle to late Berriasian, indicated by a general increase in kaolinite in the clay mineral assemblages. This trend from a dry climatic phase to a more humid one, is also recorded in higher paleolatitudes, from the boreal area, the northern margin of the Tethys Sea (Deconinck, 1987(Deconinck, , 1993Rasplus et al, 1987;Schnyder, 2003) and also documented southerly in Morocco (Agadir area), on the Atlantic domain (Daoudi et al, 1989;Daoudi and Deconinck, 1994).…”

Section: Introductionmentioning

confidence: 78%

“…The main climatic event during the Berriasian occurred across the lower/middle Berriasian boundary. It is marked by a turnover from dry to more humid conditions indicated by a drastic change in clay mineralogy (Figure 10I) in the southern Tethys margin (Daoudi et al, 1989;Daoudi and Deconinck, 1994;Schnyder et al, 2005) as well as in the northern Tethys margins (Deconinck, 1987(Deconinck, , 1993Rasplus et al, 1987;Schnyder, 2003). Our MS data (Figure 3) may indicate this dry to humid transition, through a gradual upward increase as the detrital input continue to feed the basin.…”

Section: Paleoclimate Implications: the Lower Berriasian Arid Climatementioning

confidence: 99%

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Linking the Variation of Sediment Accumulation Rate to Short Term Sea-Level Change Using Cyclostratigraphy: Case Study of the Lower Berriasian Hemipelagic Sediments in Central Tunisia (Southern Tethys)

2021

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High-resolution magnetic susceptibility and % CaCO3 records (5 to 10 cm sampling interval) are used to track astronomical cycles from a Lower Berriasian record from central Tunisia. Six hundred and twenty two samples were measured for magnetic susceptibility and carbonate content as paleoclimate proxies for the detection of potential Milankovitch cycles. Elemental data using X-Ray fluorescence analyses was acquired from 19 samples to prove the reliability of the MS signal on recording the past paleoclimatic changes. We performed multiple spectral analyses and statistical techniques on the magnetic susceptibility signal, such as Multi-taper Method, Evolutive Harmonic Analysis, Correlation Coefficient, Time-optimization, and Average Spectral Misfit to obtain an optimal astronomical model. The application of these spectral analysis techniques revealed a pervasive dominance of E405-kyr and e100-kyr cycles showing that the climate turnover across the early Berriasian—middle Berriasian seems to had been governed by the long and short orbital eccentricity cycles. The identification of Milankovitch cycles in the record also allowed to propose a floating astronomical timescale of the studied section, with ~4 long eccentricity cycles (E405) extracted, which points to a duration estimate of ~1.6 Myr with an average sediment accumulation rate (SAR, after compaction) of 2.77 cm/kyr. The inferred floating ATS was tuned to the La2004 astronomical solution. In addition, we applied the DYNOT and ρ1 methods for seal-level change modeling to reconstruct a local eustatic profile which matches the previously published local and global eustatic charts.

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Section: Introductionmentioning

confidence: 78%

Section: Paleoclimate Implications: the Lower Berriasian Arid Climatementioning

confidence: 99%

Linking the Variation of Sediment Accumulation Rate to Short Term Sea-Level Change Using Cyclostratigraphy: Case Study of the Lower Berriasian Hemipelagic Sediments in Central Tunisia (Southern Tethys)

2021

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“…With this new team, they developed integrated stratigraphy combining the most modern approaches of sedimentology, (micro)paleontology, chemostratigraphy, magnetostratigraphy, geochronology and the emerging sequential stratigraphy. Their researches were focused on the Tethyan region, from Turkey [Fourcade et al, 1991] to Spain [Rasplus et al, 1997]. Their results have provided an opportunity to decipher the traces of geodynamic, oceanic or climatic events in the sedimentary series [Dercourt et al, 1986a], in particular the oceanic anoxic events of the Mesozoic.…”

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confidence: 99%