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40Ar/39Ar geochronologic and paleoenvironmental constraints to glacial termination III and MIS 7e, 7c, and 7a sea level fluctuations on the Tyrrhenian Sea coast of Italy
Global and Planetary Change ( IF 4.0 ) Pub Date : 2024-09-26 , DOI: 10.1016/j.gloplacha.2024.104594
F. Bulian, F. Marra, L. Monaco, D.M. Palladino, D. Scarponi, J. Sevink, P. Vannoli, M. Cervellieri, B.R. Jicha, I. Mazzini, S. Nomade, A. Pereira, A. Sposato

We provide detailed sedimentological, paleontological, and tephrochronological data on a complex sedimentary succession cropping out in the Tyrrhenian coastal area of central Italy, which was deposited in response to sea-level rise during MIS 7, coeval with the Latera phase of activity in the Vulsini Volcanic District. Diffuse intercalations of primary volcanic layers erupted during this phase and their geochronologic and chemostratigraphical characterization based on 40Ar/39Ar dating and EMP analyses, allowed for the identification of three stacked aggradational successions separated by erosive phases and their correlation with the Oxygen isotope record and phases in the relative sea-level curve. The ages of the tephra layers strictly frame the sedimentation in the interval of 253–206 ka, providing independent dating to glacial Termination III and to the three sea-level oscillations during MIS 7e, 7c, and 7a.

中文翻译:


40Ar/39Ar 地质年代学和古环境对意大利第勒尼安海沿岸冰川终止 III 和 MIS 7e、7c 和 7a 海平面波动的限制



我们提供了关于意大利中部第勒尼安沿海地区出现的复杂沉积演替的详细沉积学、古生物学和年代学数据,该沉积物是在 MIS 7 期间因海平面上升而沉积的,与 Vulsini 火山区的 Latera 活动阶段同时代。在这个阶段喷发的原生火山层的弥漫插层及其基于 40Ar/39Ar 测年和 EMP 分析的地质年代学和化学地层学特征,可以识别出由侵蚀相分隔的三个堆叠的加积演替,以及它们与氧同位素记录和相对海平面曲线中的相的相关性。火山灰层的年龄严格界定了 253-206 ka 区间内的沉积作用,提供了对冰川终止 III 和 MIS 7e、7c 和 7a 期间的三次海平面振荡的独立年代。
更新日期:2024-09-26
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