气候变化领域集成服务门户(CCPortal): Structural inversion of back-arc basins–The Neogene Adjara-Trialeti fold-and-thrust belt (SW Georgia) as a far-field effect of the Arabia-Eurasia collision

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DOI	10.1016/j.tecto.2020.228702
	Structural inversion of back-arc basins–The Neogene Adjara-Trialeti fold-and-thrust belt (SW Georgia) as a far-field effect of the Arabia-Eurasia collision
	Gusmeo T.; Cavazza W.; Alania V.M.; Enukidze O.V.; Zattin M.; Corrado S.
发表日期	2021
ISSN	00401951
卷号	803
英文摘要	The 350 km-long Adjara-Trialeti fold-and-thrust belt of southwestern Georgia is the result of the structural inversion of a continental back-arc basin developed in the Paleogene on the upper (Eurasian) plate of the northward subducting northern branch of the Neotethys. Low-temperature thermochronological data [fission-track and (U-Th)/He analyses on apatite] from sedimentary and plutonic rocks provide robust constraints on the tectonic evolution of the Adjara-Trialeti orogenic belt. Fission-track central ages range from the Middle Eocene to the Middle Miocene (46–15 Ma); helium ages are clustered in the Late Miocene-Pliocene (10–3 Ma). Time-temperature paths obtained integrating thermochronologic, stratigraphic, and radiometric data show that the volcanosedimentary basin fill of the Adjara-Trialeti back-arc basin underwent progressive burial heating prior to final cooling/exhumation in the late Middle Miocene-Pliocene. These new data show that the Adjara-Trialeti back-arc basin was inverted and developed as a fold-and-thrust belt starting at 14–10 Ma, in tune with widespread Middle-to-Late Miocene shortening and exhumation across wide areas of the Middle East, from the eastern Pontides of NE Turkey to the Lesser Caucasus in northern Armenia and NW Azerbaijan, and the Talysh and Alborz ranges in northern Iran. Such a supraregional tectonism is interpreted as a far-field effect of the Arabia-Eurasia collision along the Bitlis suture ca. 400 km to the south of the study area. © 2020 Elsevier B.V.
关键词	(U-Th)/He analysis Arabia-Eurasia collision Far-field tectonics Fission-track analysis Lesser Caucasus Rift inversion
英文关键词	Phosphate minerals; Sedimentary rocks; Stratigraphy; Temperature; Eastern Pontides; Far-field effect; Fold-and-thrust belts; Low temperatures; Middle Miocene; Radiometric data; Tectonic evolution; Time temperature; Fission reactions; backarc basin; continental collision; fission track dating; fold and thrust belt; Neogene; rifting; structural geology; tectonics; uranium series dating; Arabian Peninsula; Caucasus; Eurasia; Georgia (republic); Meleagris gallopavo
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207981
作者单位	Department of Biological, Geological and Environmental Sciences, Univ. of Bologna, Italy; Institute of Geophysics, I. Javakhishvili State University, Tbilisi, Georgia; Department of Geosciences, Univ. of Padova, Italy; Department of Sciences, Roma Tre University, Rome, Italy
推荐引用方式 GB/T 7714	Gusmeo T.,Cavazza W.,Alania V.M.,等. Structural inversion of back-arc basins–The Neogene Adjara-Trialeti fold-and-thrust belt (SW Georgia) as a far-field effect of the Arabia-Eurasia collision[J],2021,803.
APA	Gusmeo T.,Cavazza W.,Alania V.M.,Enukidze O.V.,Zattin M.,&Corrado S..(2021).Structural inversion of back-arc basins–The Neogene Adjara-Trialeti fold-and-thrust belt (SW Georgia) as a far-field effect of the Arabia-Eurasia collision.Tectonophysics,803.
MLA	Gusmeo T.,et al."Structural inversion of back-arc basins–The Neogene Adjara-Trialeti fold-and-thrust belt (SW Georgia) as a far-field effect of the Arabia-Eurasia collision".Tectonophysics 803(2021).