DOI: 10.1016/j.gloplacha.2014.12.003
论文题名: The lost Adventure Archipelago (Sicilian Channel, Mediterranean Sea): Morpho-bathymetry and Late Quaternary palaeogeographic evolution
作者: Civile D. ; Lodolo E. ; Zecchin M. ; Ben-Avraham Z. ; Baradello L. ; Accettella D. ; Cova A. ; Caffau M.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2015
卷: 125 起始页码: 36
结束页码: 47
语种: 英语
英文关键词: Adventure Archipelago
; Early Holocene palaeogeography
; Morpho-bathymetry
; Post-LGM marine transgression
; Sicilian channel
Scopus关键词: Bathymetry
; Maps
; Sedimentary rocks
; Sedimentology
; Seismic waves
; Seismology
; Volcanic rocks
; Adventure Archipelago
; Early Holocene
; Last Glacial Maximum
; Marine transgression
; Morphological markers
; Neogene sedimentary rocks
; Sedimentary covers
; Sicilian channel
; Sea level
英文摘要: The rise in sea level following the Last Glacial Maximum (LGM) radically altered pre-existing geography, pushing back the former shorelines. The effect of this eustatic change was particularly intense and dramatic in flat lands and shelves, such as the Sicilian Channel. High-resolution bathymetric maps and Chirp seismic profiles analyzed in this study show that the Sicilian Channel, now lying at depths rarely exceeding 150 m, has emerged several times during its geological history. The last emergence was during the Early Holocene, when kilometre-sized islands punctuated the north-western sector of the Sicilian Channel, the Adventure Plateau, forming a broad archipelago. Many of these islands, now located in water ranging in depth from -. 10 to - 40 m, are composed of highly deformed Neogene sedimentary rocks (Talbot, Ante-Talbot, Nereo, and Pantelleria Vecchia banks), while others represent submarine Pleistocene volcanic edifices (Galatea, Anfitrite and Tetide banks). Sedimentary cover in all of these banks is virtually absent. High-resolution seismic profiles allowed the identification of post-LGM morphological markers associated with the marine transgression, some of which are characterized by melt water-pulses, as demonstrated by the presence of specific and distinct erosional features. Combining swath bathymetric data with the seismic profiles, we have generated two palaeogeographic maps of the former Adventure Archipelago at two specific time frames: (1) at the end of the Younger Dryas stadial (11,500 yr B.P., corresponding to a former sea level of - 60 m), and (2) at the end of the melt-water pulse 1B (11,200 yr B.P., corresponding to a former sea level of - 42 m). Maps clearly show that in just 300. years the geography of the archipelago has changed dramatically, so much so that some islands have disappeared and some have decreased by more than 80% of their pre-Younger Dryas size. © 2014 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84919934161&doi=10.1016%2fj.gloplacha.2014.12.003&partnerID=40&md5=0ba78203d1761c72d51c39bd2b3a55a1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11566
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Trieste, Italy
Recommended Citation:
Civile D.,Lodolo E.,Zecchin M.,et al. The lost Adventure Archipelago (Sicilian Channel, Mediterranean Sea): Morpho-bathymetry and Late Quaternary palaeogeographic evolution[J]. Global and Planetary Change,2015-01-01,125.