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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Timing of Late Pliocene to Middle Pleistocene tectonic events in Rhodes (Greece) inferred from magneto-biostratigraphy and Ar-40/Ar-39 dating of a volcaniclastic layer
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Timing of Late Pliocene to Middle Pleistocene tectonic events in Rhodes (Greece) inferred from magneto-biostratigraphy and Ar-40/Ar-39 dating of a volcaniclastic layer

机译：从磁生物地层学和火山碎屑层的Ar-40 / Ar-39测年推断，在罗得岛（希腊）的晚新世至中更新世构造事件的时间

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We discovered a volcaniclastic layer in the Plio-Pleistocene coastal sequences on the island of Rhodes (Aegean fore-arc, Greece). Here, we present an integrated isotopic, magnetostratigraphic, and biostratigraphic (planktonic foraminifers) study for the Haraki section, where this layer is found intercalated in several meters of sedimentary rocks corresponding to the Lindos Bay clay Member of the Rhodes Formation. Ar-40/Ar-39 dating of the volcaniclastic layer provides an age of 1.89 +/- 0.09 Ma, which is consistent with our planktonic foraminiferal data. Magnetostratigraphic results show that the entire Haraki section is of normal polarity and according to the isotopic results this cot-responds to the Olduvai subehron (1.95-1.77 Ma). The new age determination provides severe constraints for deciphering the sedimentary and tectonic evolution of Rhodes since the Late Pliocene, which can be summarized in the following: (1) 500 to 600 m drowning during the latest Pliocene that could be related to the westward motion of the Anatolian Plate; (2) at least 520 m of uplift at around 1.4-1.3 Ma related to activity of the sinistral strike-slip of the Pliny Trench, the deep Rhodes basin being separated from the island of Rhodes; (3) a counterclockwise rotation of Rhodes, younger than 1.2-1.1 Ma, and possibly synchronous with the young clockwise rotation of the western Aegean arc. (c) 2006 Elsevier B.V. All rights reserved.
机译：我们在罗得岛（希腊爱琴海前弧）上的上新世海岸序列中发现了火山碎屑层。在这里，我们介绍了Haraki断面的同位素，磁地层学和生物地层学（浮游有孔虫）的综合研究，在该层中发现该层插在数米的沉积岩中，该沉积岩对应于罗德斯组的Lindos湾粘土。火山碎屑层的Ar-40 / Ar-39测年提供了1.89 +/- 0.09 Ma的年龄，这与我们的浮游有孔虫数据一致。磁地层学结果表明，整个Haraki剖面呈正极性，根据同位素结果，该床与Olduvai亚黑仑（1.95-1.77 Ma）相对应。新的年龄确定为解密自上新世以来的罗得岛的沉积和构造演化提供了严格的约束条件，可以概括如下：（1）在最新的上新世淹没500至600 m，这可能与上新世西移有关。安那托利亚板块; （2）在1.4-1.3 Ma左右至少有520 m的隆起与普林尼海沟的左旋走滑活动有关，罗得岛深部盆地与罗得岛隔开。 （3）小于1.2-1.1 Ma的Rhodes逆时针旋转，并且可能与爱琴海西部弧的年轻顺时针旋转同步。 （c）2006 Elsevier B.V.保留所有权利。

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