DOI: 10.1007/s00531-013-0876-6
Scopus记录号: 2-s2.0-84878925734
论文题名: Detection of detached forced-regressive nearshore wedges: A case study from the central-southern Siena Basin (Northern Apennines, Italy)
作者: Martini I. ; Arragoni S. ; Aldinucci M. ; Foresi L.M. ; Bambini A.M. ; Sandrelli F.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2013
卷: 102, 期: 5 起始页码: 1467
结束页码: 1489
语种: 英语
英文关键词: Forced regression
; Nearshore detached wedges
; Sequence stratigraphy
; Siena Basin
Scopus关键词: collision zone
; depositional sequence
; nearshore dynamics
; Pliocene
; sea level change
; sequence stratigraphy
; stratigraphic correlation
; transgression-regression cycle
; Apennines
; Italy
; Siena [Tuscany]
; Tuscany
英文摘要: The detection of detached nearshore wedges formed in response to relative sea-level drops is considered one of the hottest topics in sequence stratigraphic analysis due to their importance as reservoir analogues. In fact, they usually constitute sandy and porous bodies generally encased in impermeable clay, thus presenting a good potential as traps for fluids. This paper focuses on the sequence stratigraphic analysis of the Pliocene deposits cropping out in the central-southern sector of the Siena Basin (Tuscany, Italy), a post-collisional basin of the Northern Apennines. The exposed sedimentary succession was investigated through a detailed sedimentological and stratigraphic approach, integrated by biostratigraphic analyses, aimed at a better characterization of the infilling history of this sector of the basin. Specifically, this study revealed the occurrence of repeated facies shifts that allowed the identification of two depositional sequences. In detail, a thick sand-rich body far from the basin margins, and previously considered as a turbiditic lobe, has been reinterpreted as formed in a nearshore setting during a fall in relative sea level. This body is totally encased in offshore clay, and due to the lack of physical connection with the related HST deposits, it has to be considered as a detached forced-regressive wedge. The present work led to the recognition of some sedimentological and stratigraphic features typical of falling stage systems tract deposits (e.g. presence of intrabasinal recycled materials, sedimentological evidence of a pre-existing fluvial network subsequently eroded) that can provide useful clues for the identification of detached forced-regressive nearshore wedges in core studies and poorly exposed settings. © 2013 Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878925734&doi=10.1007%2fs00531-013-0876-6&partnerID=40&md5=5663c01b02eb1ae35dfea448fbc49213
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70531
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Dipartimento di Scienze Fisiche, Della Terra e dell'Ambiente, Università di Siena, via Laterina 8, 53100 Siena, Italy; Weatherford Petroleum Consultants AS, Folke Bernadottesvei 38B, 5147 Bergen, Norway
Recommended Citation:
Martini I.,Arragoni S.,Aldinucci M.,et al. Detection of detached forced-regressive nearshore wedges: A case study from the central-southern Siena Basin (Northern Apennines, Italy)[J]. International Journal of Earth Sciences,2013-01-01,102(5)