globalchange  > 气候变化与战略
DOI: 10.1016/j.tecto.2020.228565
论文题名:
On the origin and consequences of crustal-scale extension between Africa and Sicily since Late Miocene: insights from the Kaboudia area, western Pelagian Sea
作者: Arab M.; Maherssi C.E.; Granjeon D.; Roure F.; Déverchère J.; Cuilhé L.; Hassaim M.; Mouchot N.; Doublet S.; Khomsi S.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2020
卷: 795
语种: 英语
中文关键词: Crustal thinning ; Kinematics ; NE extension ; Pelagian shelf ; Tectono-stratigraphic records
英文关键词: Lithology ; Seismology ; Stratigraphy ; Structural geology ; Tectonics ; Continental crusts ; Continental lithosphere ; Extensional tectonics ; Geodetic measurements ; Geodynamic process ; Seismic reflection profiles ; Seismic refraction ; Stratigraphic records ; Geodynamics ; data inversion ; extensional tectonics ; focal mechanism ; Miocene ; normal fault ; rifting ; tectonic evolution ; tectonic setting ; tectonophysics ; tectonostratigraphy ; Africa ; Agrigento ; Italy ; Mediterranean Sea ; Pelagi Islands ; Sicily ; Pelagia
英文摘要: The eastern Tunisian shelf is located between the Gulf of Hammamet and the Gulf of Gabes and belongs to the Pelagian domain which underwent a continuous NE-directed extension and crustal thinning since Late Miocene. This geodynamic process induced the formation of NW striking normal faults and associated grabens both in the Tunisian Atlas and the Pelagian domain, including the Sicily Channel rifting zone (SCRZ). In this study, we combine regional stratigraphy from seismic reflection profiles, focal mechanisms, space geodetic measurements (GNSS) and thermal indicators from well data to propose a backward tectonic reconstitution of the Pelagian domain. The thinning of the continental crust is demonstrated by gravity inversion integrating published seismic refraction profiles. By completing the interpretation of tectono-stratigraphic records, we highlight a northeastward propagation of extension prevailing within the Pelagian shelf from Messinian to Plio-Quaternary times. We suggest that extensional tectonics is explained by (1) eastward slab tearing between the African continental lithosphere and the Tethyan oceanic slab, allowing asthenospheric upwelling, and (2) forces arising from relative motions between Nubia and the Hyblean-Malta block. The decoupling of these domains since Late Miocene likely results from a combination of the NW-directed plate convergence, inherited rheological contrasts within the continental crust, and weakening arising from mantle flow induced by the Tethyan slab rollback and tearing. © 2020 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170541
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: Sonatrach/Exploration Division, Avenue du 1er novembre Bat ‘C' BP 68, Boumerdes, Algeria; Numhyd a.r.l. Sonatrach/Etap JV Company, Lac Leman, Leman Center tower, Lac1, Tunis, Tunisia; IFP-Energies Nouvelles, Rueil-Malmaison, Paris, France; Univ Brest, CNRS, Lab Géosciences Océan, Plouzané, F-29280, France; Beicip Franlab, Rueil-Malmaison, Paris, France; King Abdulaziz university (KAU), Faculty of earth Sciences, Geoexploration Department, Jeddah, Saudi Arabia

Recommended Citation:
Arab M.,Maherssi C.E.,Granjeon D.,et al. On the origin and consequences of crustal-scale extension between Africa and Sicily since Late Miocene: insights from the Kaboudia area, western Pelagian Sea[J]. Tectonophysics,2020-01-01,795
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Arab M.]'s Articles
[Maherssi C.E.]'s Articles
[Granjeon D.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Arab M.]'s Articles
[Maherssi C.E.]'s Articles
[Granjeon D.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Arab M.]‘s Articles
[Maherssi C.E.]‘s Articles
[Granjeon D.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.