气候变化领域集成服务门户(CCPortal): Tectonic implication of quantitative micro-fabric analyses of quartz c-axis development within the Tutak gneiss dome; Zagros hinterland fold-and-thrust belt

CCPortal

DOI	10.1007/s00531-019-01793-9
	Tectonic implication of quantitative micro-fabric analyses of quartz c-axis development within the Tutak gneiss dome; Zagros hinterland fold-and-thrust belt
	Shoorangiz M.; Sarkarinejad K.; Nourbakhsh A.; Dehsarvi L.H.
发表日期	2020
ISSN	14373254
起始页码	127
结束页码	144
卷号	109 期号:1
英文摘要	Quartz c-axis fabrics, finite strain, and kinematic vorticity number analyses were used to investigate deformation characteristics of the Tutak gneiss dome located in the eastern edge of the basement-involved Zagros hinterland fold-and-thrust belt. The opening angle of the quartz c-axis fabric patterns was used to estimate deformation temperatures, which suggest greenschist-to-amphibolite-facies conditions (430 ± 50 °C to 660 ± 50 °C). The kinematic vorticity number varies from 0.6 to 0.95 (mean kinematic vorticity number of 0.81), which indicates that the metamorphic rocks of the Tutak gneiss dome experienced a sub-simple shear regime by contribution of both pure shear (39%) and simple shear (61%) deformation components. NW–SE-striking foliations have commonly SW and NE dips accompanied by mostly NW–SE-plunging and subordinate NE–SW-plunging-stretching lineations. These indicate more extension along the NW–SE trend to produce a prolate elliptical wedge shape in map view. Structural and vorticity analysis suggests that the Tutak gneiss dome has experienced earlier dome formation followed by thrust stacking rather than the two deformations occurring synchronously, and a protracted progressive deformation through a decreasing temperature regime. © 2019, Geologische Vereinigung e.V. (GV).
英文关键词	Deformation temperature; Kinematic vorticity number; Quartz c-axis fabrics; Tutak gneiss dome; Zagros
语种	英语
scopus关键词	deformation; dome; fold and thrust belt; gneiss; kinematics; quantitative analysis; quartz; tectonics; Zagros
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147738
作者单位	Department of Earth Sciences, College of Sciences, Shiraz University, Shiraz, Iran
推荐引用方式 GB/T 7714	Shoorangiz M.,Sarkarinejad K.,Nourbakhsh A.,et al. Tectonic implication of quantitative micro-fabric analyses of quartz c-axis development within the Tutak gneiss dome; Zagros hinterland fold-and-thrust belt[J],2020,109(1).
APA	Shoorangiz M.,Sarkarinejad K.,Nourbakhsh A.,&Dehsarvi L.H..(2020).Tectonic implication of quantitative micro-fabric analyses of quartz c-axis development within the Tutak gneiss dome; Zagros hinterland fold-and-thrust belt.International Journal of Earth Sciences,109(1).
MLA	Shoorangiz M.,et al."Tectonic implication of quantitative micro-fabric analyses of quartz c-axis development within the Tutak gneiss dome; Zagros hinterland fold-and-thrust belt".International Journal of Earth Sciences 109.1(2020).