GEOMETRICAL ANALYSIS OF FRACTURES IN SABZEVAR OPHIOLITE ZONE

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MIRZEINALIYAZDI S.H.; POURKERMANI M.; ARIAN M.; ALMASIAN M.

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Journal: JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY) Year:2012 | Volume:7 | Issue:4 Page(s): 359-371

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Title

GEOMETRICAL ANALYSIS OF FRACTURES IN SABZEVAR OPHIOLITE ZONE

Author(s)

MIRZEINALIYAZDI S.H. | POURKERMANI M. | ARIAN M. | ALMASIAN M. | Issue Writer Certificate

Keywords

BRITTLE STRUCTURESQ3

MIAMEY FAULTQ2

STRUCTURAL MODELQ2

ULTRAMAFIC ROCKSQ2

Abstract

Sabzevar Ophiolite Zone (SOZ) is located in northern Central Iran (north of Great Kavir fault and south of MIAMEY FAULT) and separates Kopp e Dagh sedimentary basin (in the north) from the Central Iran plateau (in the South). The evolution and replacement time of this ophiolite complex has been in the Upper Cretaceous) Santonian – Campanian) and the Middle Campanian to Upper Maastrichtian respectively. This ophiolite belt contains a high amount of ULTRAMAFIC ROCKS, small masses of gabbros and a thick sequence of submarine basaltic lavas with Upper Cretaceous pelagic limestone and radiolarite, which are angular unconformable and have a base of conglomerates of volcanic and sedimentary rocks. This study examines the BRITTLE STRUCTURES of SOZ and carries out a geometrical analysis. The purpose of this study is to obtain a suitable STRUCTURAL MODEL consistent with the area structures. In this paper, the geometrical condition is compared with all the area structures and a logical relationship between fractures has been identified. Also the relationship between the regional macro-structures and area fractures has been identified. For this purpose during the field visits and study of the satellite imagery, structures and exposure which make the base of a structural map of the area have been provided.. Then with the surveyed data and provided rose and contour diagrams the main direction of fractures and the pattern of orientation were obtained. This direction is N59W, the same trend as the MIAMEY FAULT. The structures in the region are affected by this fault. If this direction is considered the main right-lateral shear trend, other trends are consistent with pattern of fractures orientations Related to fault cutting. Generally the fractures with N14E, N68E, N86E, N77W, N59W and N41W trend, respectively are consistent with type X, R', T, R, D and P fractures.

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APA: Copy

MIRZEINALIYAZDI, S.H., POURKERMANI, M., ARIAN, M., & ALMASIAN, M.. (2012). GEOMETRICAL ANALYSIS OF FRACTURES IN SABZEVAR OPHIOLITE ZONE. JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY), 7(4), 359-371. SID. https://sid.ir/paper/127075/en

Vancouver: Copy

MIRZEINALIYAZDI S.H., POURKERMANI M., ARIAN M., ALMASIAN M.. GEOMETRICAL ANALYSIS OF FRACTURES IN SABZEVAR OPHIOLITE ZONE. JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY)[Internet]. 2012;7(4):359-371. Available from: https://sid.ir/paper/127075/en

IEEE: Copy

S.H. MIRZEINALIYAZDI, M. POURKERMANI, M. ARIAN, and M. ALMASIAN, “GEOMETRICAL ANALYSIS OF FRACTURES IN SABZEVAR OPHIOLITE ZONE,” JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY), vol. 7, no. 4, pp. 359–371, 2012, [Online]. Available: https://sid.ir/paper/127075/en

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