气候变化领域集成服务门户(CCPortal): Thermal and structural modeling of the Scillato wedge-top basin source-to-sink system: Insights into the Sicilian fold-and-thrust belt evolution (Italy)

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DOI	10.1130/B35078.1
	Thermal and structural modeling of the Scillato wedge-top basin source-to-sink system: Insights into the Sicilian fold-and-thrust belt evolution (Italy)
	Balestra M.; Corrado S.; Aldega L.; Morticelli M.G.; Sulli A.; Rudkiewicz J.-L.; Sassi W.
发表日期	2019
ISSN	167606
起始页码	1763
结束页码	1782
卷号	131 期号:2021-11-12
英文摘要	Temperature-dependent clay mineral assemblages, vitrinite reflectance, and one-dimensional (1-D) thermal and three-dimensional (3-D) geological modeling of a Neogene wedge-top basin in the Sicilian fold-and-thrust belt and its pre-orogenic substratum allowed us to: (1) define the burial history of the sedimentary succession filling the wedge-top basin and its substratum, (2) reconstruct the wedge-top basin geometry, depocenter migration, and sediment provenance through time in the framework of a source-to-sink system, and (3) shed new light into the kinematic evolution of the Apennine-Maghrebian fold-and-thrust belt. The pre-orogenic substratum of the Scillato basin shows an increase in levels of thermal maturity as a function of stratigraphic age that is consistent with maximum burial to 3.5 km in deep diagenetic conditions. In detail, Ro% values range from 0.40% to 0.94%, and random ordered illite-smectite (I-S) first converts to short-range ordered structures and then evolves to long-range ordered structures at the base of the Imerese unit. The wedge-top basin fill experienced shallow burial (~2 km) and levels of thermal maturity in the immature stage of hydrocarbon generation and early diagenesis. Vitrinite reflectance and mixed-layer I-S values show two populations of authigenic and inherited phases. The indigenous population corresponds to macerals with Ro% values of 0.33%-0.45% and I-S with no preferred sequence in stacking of layers, whereas the reworked group corresponds to macerals with Ro% values of 0.42%-0.47% and short-range ordered I-S with no correlation as a function of depth. Authigenic and reworked components of the Scillato basin fill allowed us to unravel sediment provenance during the Neogene, identifying two main source areas feeding the wedge-top basin (crystalline units of the European domain and sedimentary units of the African domain), and to detect an early phase of exhumation driven by low-angle extensional faults that predated Neogene compression. © 2019 Geological Society of America.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184956
作者单位	Dipartimento di Scienze, Università Roma Tre, Rome, 00146, Italy; Dipartimento di Scienze della Terra, Sapienza Università di Roma, Rome, 00185, Italy; Dipartimento di Scienze della Terra e del Mare, Università di Palermo, Palermo, 90123, Italy; IFP Energies Nouvelles, Rueil-Malmaison, 92852, France
推荐引用方式 GB/T 7714	Balestra M.,Corrado S.,Aldega L.,et al. Thermal and structural modeling of the Scillato wedge-top basin source-to-sink system: Insights into the Sicilian fold-and-thrust belt evolution (Italy)[J],2019,131(2021-11-12).
APA	Balestra M..,Corrado S..,Aldega L..,Morticelli M.G..,Sulli A..,...&Sassi W..(2019).Thermal and structural modeling of the Scillato wedge-top basin source-to-sink system: Insights into the Sicilian fold-and-thrust belt evolution (Italy).Bulletin of the Geological Society of America,131(2021-11-12).
MLA	Balestra M.,et al."Thermal and structural modeling of the Scillato wedge-top basin source-to-sink system: Insights into the Sicilian fold-and-thrust belt evolution (Italy)".Bulletin of the Geological Society of America 131.2021-11-12(2019).