Geometry, kinematics and displacement characteristics of strike-slip faults in the northern slope of Tazhong uplift in Tarim Basin: A study based on 3D seismic data

Han, Xiaoying; Deng, Shang; Tang, Luping; Cao, Z.

doi:10.1016/j.marpetgeo.2017.08.033

Cited by 79 publications

(39 citation statements)

References 35 publications

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“…embryonic forming, finalization and burial of Paleo-uplift. Through the study on the forming time of the Tazhong Uplift, the most findings support that the critically tectonic deformations occurred in the middle Caledon and the early Hercynian period [8][9][10], and presented the unconformity interfaces then [11]. This paper starts with the analysis on fault structures and geological characteristics and closes with the origin of Tazhong Uplift.…”

Section: Introductionmentioning

confidence: 58%

Tectonic Characteristic and Origin of Tazhong Uplift, Tarim Basin

Jin¹,

Cui²,

Zhi-xu³

2018

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Abstract. This paper presents the analysis on geological characteristics of Tazhong Uplift, such as the configuration and nature of the fault structures, and the aeromagnetic anomaly, etc. The study result shows that Tazhong Uplift presents several large-scale fault belts that mainly extend in three directions: NW, approximate (approx.) EW and NNE. The NW fault belts lie in the north and northwest of the research area; the approx. EW fault belts rest in the south and southeast of the research area, whereas the NNE fault belts are mainly strike-slip faults and cut the NW fault belts into several structural segments. It is concluded that the late Caledonian and the late Hercynian period were the two major forming periods of Tazhong Uplift. In the late Caledonian period, the NW thrust faults developed in Tazhong Uplift under the tectonic compression stress from the southwest Foreland Basin. In the late Hercynian period, the subduction of Altyn Orogenic Belt influenced the central Tarim and generated the approx. EW thrust faults in the central and southern Tazhong Uplift. This subduction also forced the early-formed fault belts into an arc-shape in the central Tazhong Uplift and caused NNE strike-slip faults in the northern Tazhong Uplift. Laterally the tectonic stress decreased from the south to the north. From regional perspective, the fault belts diverge to the west and converge to the east.

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Section: Introductionmentioning

confidence: 58%

Tectonic Characteristic and Origin of Tazhong Uplift, Tarim Basin

Jin¹,

Cui²,

Zhi-xu³

2018

dteees

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“…5b shows a calculational method for quantitatively calculating the local reverse separation of the inclined horizon along the deeper faults, where the stratigraphic units are tilted. As pointed out by Han et al (2017) the prominent reverse separations of the horizon along each deeper fault are recorded in the T74 and T72 horizon, this study chooses the T74 horizon as the indicator to calculate the reverse separation along the deeper faults. In addition, Fault SN3 is unrepresentative because of its short extension in the SN 3D seismic volume, and so, this study did not involve this calculation.…”

Section: Methodology and Descriptionmentioning

confidence: 99%

“…5c. In the S1 3D seismic volume, the maximum growth index of each fault is recorded in the Yimugantawu Formation (Han et al, 2017), which indicates that the fault throw of the T62 horizon of each shallower fault is the maximum. Thus, the T62 horizon was chosen as the indicator to calculate the fault throw of the shallower faults.…”

Section: Methodology and Descriptionmentioning

confidence: 99%

“…However, the existence of genetic relations between the deeper and shallower faults are to be further verified. Since these normal faults were active during the Middle Silurian to the Middle Devonian (Han et al, 2017), while no NE-SW extension is documented in the northern slope of Tazhong uplift at that time, it is very likely that the formation of these faults were related to activity of the deeper strike-slip faults. As presented above, each of the shallower fault zones is composed of a series of NW-trending normal faults.…”

Section: Genetic Relations Of the Deeper And Shallower Faultsmentioning

confidence: 99%

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Spatial Characteristics and Controlling Factors of the Strike‐slip Fault Zones in the Northern Slope of Tazhong Uplift, Tarim Basin: Insight from 3D Seismic Data

Han

Tang

Deng

et al. 2020

Acta Geologica Sinica (Eng)

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The detailed characteristics of the Paleozoic strike-slip fault zones developed in the northern slope of Tazhong uplift are closely related to hydrocarbon explorations. In this study, five major strike-slip fault zones that cut through the Cambrian-Middle Devonian units are identified, by using 3D seismic data. Each of the strike-slip fault zones is characterized by two styles of deformation, namely deeper strike-slip faults and shallower en-echelon faults. By counting the reverse separation of the horizon along the deeper faults, activity intensity on the deeper strike-slip faults in the south is stronger than that on the northern ones. The angle between the strike of the shallower en-echelon normal faults and the principal displacement zone (PDZ) below them is likely to have a tendency to decrease slightly from the south to the north, which may indicate that activity intensity on the shallower southern en-echelon faults is stronger than that on the northern ones. Comparing the reverse separation along the deeper faults and the fault throw of the shallower faults, activity intensity of the Fault zone S1 is similar across different layers, while the activity intensity of the southern faults is larger than that of the northern ones. It is obvious that both the activity intensity of the same layer in different fault zones and different layers in the same fault zone have a macro characteristic in that the southern faults show stronger activity intensity than the northern ones. The Late Ordovician dé collement layer developed in the Tazhong area and the peripheral tectonic events of the Tarim Basin have been considered two main factors in the differential deformation characteristics of the strike-slip fault zones in the northern slope of Tazhong uplift. They controlled the differences in the multi-level and multi-stage deformations of the strike-slip faults, respectively. In particular, peripheral tectonic events of the Tarim Basin were the dynamic source of the formatting and evolution of the strike-slip fault zones, and good candidates to accommodate the differential activity intensity of these faults.

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“…Over the last few decades, significant advances in seismic processing and acquisition of new 3‐D data sets have revealed the existence of a spectacular intracratonic strike‐slip fault network developed across the central Tarim Basin (Deng et al, ). Exploration experiences suggest that these strike‐slip faults play key roles in reservoir formation and hydrocarbon accumulation (Han et al, ; Lu et al, ). Therefore, strike‐slip faults and the associated damage zones in Ordovician carbonates are now widely considered as the major exploration targets in the Tarim Basin (Jiao, ).…”

Section: Introductionmentioning

confidence: 99%

The Evolution of the Complex Anticlinal Belt With Crosscutting Strike‐Slip Faults in the Central Tarim Basin, NW China

et al. 2019

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Integrated 2‐D and 3‐D seismic data sets reveal that a WNW trending complex anticlinal belt (the Tazhong Uplift) was cut roughly perpendicularly by a series of NNE oriented strike‐slip faults in the central Tarim Basin, NW China. Through detailed interpretation of the internal architecture of the Tazhong Uplift and the structural characteristics of the strike‐slip faults, the timing of their movements was determined. Based upon their geometric relationship and coeval movement, we propose an integrated model for the evolution of both the Tazhong Uplift and the strike‐slip fault system. Initially, the Tazhong Uplift formed perpendicular to the NNE oriented compression that responded to the collision between the Tarim block and the western Kunlun terrane in the latest Middle Ordovician. Meanwhile, regional joints formed parallel to the maximum compression, that is, perpendicular to the Tazhong Uplift. In the latest Ordovician, northward compression caused the uplifting climax of the Tazhong Uplift in response to the collision between the Tarim block and the coherent eastern Kunlun‐Altyn Tagh‐Qaidam‐Qilian terrane. Under such a northward compression, the resolved shear stress on the NNE trending joints formed the transpressional strike‐slip faults. Afterward, the Tazhong Uplift tilted northward during the ongoing subduction from the Kunlun Ocean, which lasted until the latest Middle Devonian. The negative flower structures formed along the preexisting transpressional strike‐slip faults due to the dragging of the overlying covers in the latest Middle Devonian. The data and evolution model not only unveil the formation mechanism of the Tazhong Uplift and the associated strike‐slip faults but also provide further constraints on the evolutionary age of the Proto‐Tethys Ocean.

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Geometry, kinematics and displacement characteristics of strike-slip faults in the northern slope of Tazhong uplift in Tarim Basin: A study based on 3D seismic data

Cited by 79 publications

References 35 publications

Tectonic Characteristic and Origin of Tazhong Uplift, Tarim Basin

Tectonic Characteristic and Origin of Tazhong Uplift, Tarim Basin

Spatial Characteristics and Controlling Factors of the Strike‐slip Fault Zones in the Northern Slope of Tazhong Uplift, Tarim Basin: Insight from 3D Seismic Data

The Evolution of the Complex Anticlinal Belt With Crosscutting Strike‐Slip Faults in the Central Tarim Basin, NW China

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