Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.quaint.2017.11.054 |
Pleistocene alluvial and aeolian deposits with tephra on the island of Lopud (eastern mid-Adriatic, Croatia): Provenance, wind regime, and climate controls | |
Kovacic, Marijan1; Pavelic, Davor2; Vlahovic, Igor2; Markovic, Frane1; Wacha, Lara3; Kampic, Stefica1; Roncevic, Sanda1; Drempetic, Dorotea1 | |
通讯作者 | Kovacic, Marijan |
会议名称 | Interdisciplinary Workshop on the Quaternary of Croatia |
会议日期 | 2015 |
会议地点 | Zagreb, CROATIA |
英文摘要 | Pleistocene alluvial and aeolian sediments occur as small patches in many places in the area of the eastern Adriatic coast and on the islands. On the southeasternmost mid-Adriatic island of Lopud they were studied along two lateral sections in Sunj Bay where a lense of reworked tephra is intercalated within the alluvial deposits. The interpretation of the depositional mechanism, the sand source, the wind regime and the volcanic activity, was based on facies analysis, sedimentological characteristics, and mineralogical and geochemical composition. Alluvial deposits represent recycled aeolian sand accumulated in a small-scale alluvial plain during a relatively long-lasting humid phase, while overlying aeolian sands were deposited under the influence of the sea-ward blowing NNW wind during more arid and windy periods. Sporadically occurring breccia lenses composed of limestone fragments from the Cretaceous basement strata are the result of occasional high sediment concentration flows, and deposition in shallow stream channels. Alluvial sand is composed of siliciclastic detritus derived from different metamorphic, magmatic and older sedimentary rocks of the Inner Dinarides, while the aeolian sand represents a mixture of siliciclastic detritus of the same provenance, and carbonate clastic detritus sourced from the Karst Dinarides. The lack of carbonate detritus in the alluvial deposits is probably a consequence of dissolution due to the humid climate. The tephra lense represents pyroclastic material that was reworked by water, and pedogenically altered. The tephra belongs to the high-K calc-alcaline and shoshonite series with a trachyte-trachydacite composition indicating an origin from the Campanian Province in Southern Italy as the most probable source area. The similar composition of clastic material on Lopud to the composition of aeolian and alluvial deposits on the neighbouring eastern mid-Adriatic localities (islands of Mljet, Korcula and Lastovo, and Peljesac Peninsula), suggests their common source, while the tephra lense documents Pleistocene volcanic activity and suggests the influence of a southern wind during the humid phase. (C) 2017 Published by Elsevier Ltd. |
英文关键词 | Alluvial deposits Aeolian deposits Tephra Provenance Pleistocene Eastern mid-Adriatic |
来源出版物 | QUATERNARY INTERNATIONAL |
ISSN | 1040-6182 |
EISSN | 1873-4553 |
出版年 | 2018 |
卷号 | 494 |
页码 | 92-104 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | Croatia |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000450102800008 |
WOS关键词 | GRANDE-DI-MONTICCHIO ; SAND DUNES ; SEDIMENTS ; BASIN ; KA ; TEPHROCHRONOLOGY ; STRATIFICATION ; ARCHITECTURE ; MONTENEGRO ; MALLORCA |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/307990 |
作者单位 | 1.Univ Zagreb, Fac Sci, Horvatovac 95, HR-10000 Zagreb, Croatia; 2.Univ Zagreb, Fac Min Geol & Petr Engn, Pierottijeva 6, HR-10002 Zagreb, Croatia; 3.Croatian Geol Survey, Sachsova 2, HR-10000 Zagreb, Croatia |
推荐引用方式 GB/T 7714 | Kovacic, Marijan,Pavelic, Davor,Vlahovic, Igor,et al. Pleistocene alluvial and aeolian deposits with tephra on the island of Lopud (eastern mid-Adriatic, Croatia): Provenance, wind regime, and climate controls[C]:PERGAMON-ELSEVIER SCIENCE LTD,2018:92-104. |
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