New magnetostratigraphic data for the ∼470-m-thick Latemar carbonate platform, which includes ∼600 shallowing-upward bedding cycles, are consistent with litho- and biostratigraphic correlations of the section to a ∼10-m-thick interval in the basinal Buchenstein Beds that most likely represents only ∼1 m.y. of deposition according to published U-Pb single-crystal zircon dates. A reappraisal of reported cycle stratigraphic analyses of the Latemar suggests that the visibly obvious meter-scale bedding is not due to Milankovitch precessional forcing but rather reflects tempos an order of magnitude faster that may involve millennial-scale tidal amplitude variations.
Magnetostratigraphic confirmation of a much faster tempo for sea-level change for the Middle Triassic Latemar platform carbonates / D.V. Kent, G. Muttoni, P. Brack. - In: EARTH AND PLANETARY SCIENCE LETTERS. - ISSN 0012-821X. - 228:3-4(2004 Dec 15), pp. 369-377.
Magnetostratigraphic confirmation of a much faster tempo for sea-level change for the Middle Triassic Latemar platform carbonates
G. MuttoniSecondo
;
2004
Abstract
New magnetostratigraphic data for the ∼470-m-thick Latemar carbonate platform, which includes ∼600 shallowing-upward bedding cycles, are consistent with litho- and biostratigraphic correlations of the section to a ∼10-m-thick interval in the basinal Buchenstein Beds that most likely represents only ∼1 m.y. of deposition according to published U-Pb single-crystal zircon dates. A reappraisal of reported cycle stratigraphic analyses of the Latemar suggests that the visibly obvious meter-scale bedding is not due to Milankovitch precessional forcing but rather reflects tempos an order of magnitude faster that may involve millennial-scale tidal amplitude variations.File | Dimensione | Formato | |
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