NDLI: Sequence stratigraphy and paleogeography reconstruction of the reference Lower-Middle Turonian successions of Jebel Bireno (Central Tunisia): a semi-quantitative approach

Content Provider	Springer Nature Link
Author	Zagrarni, Mohamed Faouzi Boughdiri, Mabrouk Snoussi, Atef
Copyright Year	2016
Abstract	The Early-Middle Turonian carbonates of central Tunisia (Kef Formation, Bireno Member) are considered as ramp deposits. The correspondence analysis statistical method used here is based on the relative abundance of carbonate components and the occurrences of specific structures within beds. It was applied to the bed-by-bed sampled succession in the Jebel Bireno area in central Tunisia concerning 399 samples from 11 studied stratigraphic sections. We propose the reconstruction of the facies based on the allochem distribution (Axis 1) along the proximal to distal ramp environments. The proposed pattern brings out successive facies shifts interpreted in terms of sequence stratigraphy: along Axis 1, abrupt shifts to negative values correspond to sequence boundaries and/or regressions; positive excursions express transgressive events or maximum flooding surfaces. Trends in this Axis 1 and key surfaces allow the identification of main system tracts of third-order sequences as well as variations of paleogeography. Four dated sequences were identified within the Jebel Bireno Early-Middle Turonian series. Correlation of system tracts highlights facies and thickness variations mainly controlled by N130–N90 trending synsedimentary normal faults. Paleogeographic maps for the Bireno Mb plead in favor of a distal ramp, subtidal high-energy deposits (barrier), and proximal ramp environment.
Starting Page	1
Ending Page	11
Page Count	11
File Format	PDF
ISSN	18667511
Journal	Arabian Journal of Geosciences
Volume Number	9
Issue Number	4
e-ISSN	18667538
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-04-11
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Central Tunisia Bireno Mb Early-Middle Turonian Correspondence analysis Sequence stradigraphy Paleogeographic reconstruction Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Environmental Science

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