DOI: 10.1007/s11069-021-04894-4
论文题名: Basin progress: active deformation analysis by tectonostratigraphic elements and geophysical methods on North Anatolian Fault System (Eastern Marmara Region, Turkey)
作者: Doğan B. ; Aşci M. ; Karakaş A. ; Pekşen E. ; Erener A. ; Çepni M.S. ; Yavuzyilmaz S. ; Alahmad M. ; Sertçelik F. ; Sertçelik İ. ; Kurtuluş C.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
语种: 英语
中文关键词: Asymmetric negative flower structure
; Gravity
; Lazy-Z pull-apart basin
; Magnetic
; Resistivity
; Simple shear deformation ellipsoid
英文摘要: The Northern Branch of the North Anatolian Fault System controls and deforms the Izmit Basin and the Sapanca Lake Basin in the study area. Unlike the Sapanca Lake Basin, the oblique normal faults with WNW–ESE trending with maximum length of 5 km in the south of the basin have contributed to the deformation process in the formation of Izmit Basin. The fault sets mainly incline to the north. The N-S width of the dextral strike-slip active deformation was determined as 9 km at Izmit basin and 3.8 km at Sapanca Lake basin. Further, the minimum principal stress axes (σ3) vary in the trending ranges of N11°–74°E, which are caused by the transtensional stresses associated with strike-slip faulting in the Izmit Basin by a different tectonic source than the Sapanca Lake Basin. Besides, the crust depth of main strand of NAFS-NB was determined up to 1112 m by magnetic method. The secondary faults were determined by both magnetic and resistivity methods up to a depth of 110 m. The depression area between Izmit bay and Sapanca Lake on the northern Anatolian fault is an integrated basin with two dextral strike-slip tectonic origins. Thus, the Izmit Basin, along with the main strike-slip faulting, has been developed in the asymmetric negative flower structure, where only the southern boundary has become a fault. The Sapanca Lake Basin is a lazy-Z-shaped pull-apart system formed by the E–W trending fault as a releasing bend. A simple shear deformation ellipsoid with a long axis of approximately 35 km on the Northern Branch of the North Anatolian Fault System is defined for the Izmit–Sapanca integrated basin. Therefore, intra-basin deposits have different depths estimated from the gravity data in the Izmit–Sapanca integrated basin, and the maximum sediment thickness estimated is 2200 m in the middle of the Izmit Basin. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168987
Appears in Collections: 气候变化与战略
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作者单位: Department of Urban and Regional Planning, University of Kocaeli, Kocaeli, 41300, Turkey; Department of Geopysical Engineering, University of Kocaeli, Kocaeli, 41380, Turkey; Department of Geological Engineering, University of Kocaeli, Kocaeli, 41380, Turkey; Department of Geomatics Engineering, University of Kocaeli, Kocaeli, 41380, Turkey
Recommended Citation:
Doğan B.,Aşci M.,Karakaş A.,et al. Basin progress: active deformation analysis by tectonostratigraphic elements and geophysical methods on North Anatolian Fault System (Eastern Marmara Region, Turkey)[J]. Natural Hazards,2021-01-01