23 results on '"Benliang, Li"'
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2. On the coordinate transformations in curved space-time: particle creation, Unruh effect and all that
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Benliang Li
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- 2023
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3. Structural characteristics of the northern Longmenshan fold-thrust belt and the favorable exploration areas, Sichuan Basin, Southwest China
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Lining WANG, Zhuxin CHEN, Benliang LI, Yongliang LEI, and Shuyu YAN
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Petroleum refining. Petroleum products ,TP690-692.5 - Abstract
Based on the latest data from oil and gas exploration, the structural geometry features of the northern Longmenshan fold-thrust belt and its forming process were examined, and then favorable hydrocarbon prospecting areas were predicted. Two major orogenic events occurred in the Longmenshan belt since the Mesozoic: thrusts and folds were formed by a late Triassic compressional event, and later transformed by the late Cenozoic deformation featuring base-involved large folds. Due to the influence of the two events, thrust nappes, autochthonous thrusts and in-situ blind thrusts developed from the orogen to the foreland basin sequentially, and these structural units show different profile combination from the north to south. Among these structural units, the autochthonous thrusts and folds under lower allochthonous nappes have high potential for oil and gas exploration. Key words: Longmenshan, fold-thrust belt, structural analysis, favorable target
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- 2014
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4. Comprehensive Evaluation of Fatigue Performance of Modified Asphalt Mixtures in Different Fatigue Tests
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Kun Li, Ming Huang, Haobai Zhong, and Benliang Li
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fatigue life ,modified asphalt mixture ,four-point bending beam fatigue test ,two-point trapezoidal beam fatigue test ,overlay tester ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
The four-point bending beam fatigue test (4PB), two-point bending trapezoidal beam fatigue test (Trapezoidal Beam), and Overlay Tester (OT) are used to evaluate the fatigue performance of six kinds of asphalt mixtures that are widely used in engineering, and newly developed ones. The result shows that, in all three kinds of fatigue tests, the fatigue performances of the 6% SBS (styrene-butadiene-styrene block copolymer) modified asphalt mixture is the best, and those of the 10% WPE (waxed polyethylene) + 3% SBS, 4% SBS + 0.4% PA610, and 4% SBS modified asphalt mixture are good. The fatigue performances of the warm modified mixing agent and the base asphalt mixture are the worst. An increase in SBS content can effectively improve the fatigue performance of the asphalt mixture. The fatigue performance of the SBS-modified asphalt mixture can be improved by the addition of WPE and PA610. In different tests, the ranking of fatigue performance of the asphalt mixture is similar, and the specific ranking is slightly different. The three different fatigue tests can be used simultaneously to obtain a more comprehensive and objective evaluation in the R&D process for a new modified asphalt. The three fatigue tests process shows that more precise forming and cutting technology is needed, as the strain range used in the 4PB test is very wide, and the number of samples used in each group is small. The preparation of the Trapezoidal Beam test samples is complex; the amount of test data is huge and has high precision, which is suitable for scientific research instead of a field laboratory, and the strain range of the test is moderate in the three methods. The strain range of the OT test is the narrowest; the test specimen is relatively simple to prepare, and the fatigue performance of a specific modified asphalt mixture can be obtained quickly in a simple laboratory.
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- 2019
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- View/download PDF
5. History of hydrocarbon accumulations spanning important tectonic phases in marine sedimentary basins of China: Taking the Tarim Basin as an example
- Author
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Shuichang, Zhang, Baomin, Zhang, Benliang, Li, Guangyou, Zhu, Jin, Su, and Xiaomei, Wang
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- 2011
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6. Discussions on the character and interpretation model of Kelasu deep structures in the Kuqa area
- Author
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Shuwei, Guan, Zhuxin, Chen, Benliang, Li, and Chaojun, Zhang
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- 2010
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7. Ancient karsts and hydrocarbon accumulation in the middle and western parts of the North Tarim uplift, NW China
- Author
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Chaojun, Zhang, Chengzao, Jia, Benliang, Li, Xiuyu, Luo, and Yunxiang, Liu
- Published
- 2010
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- View/download PDF
8. Comprehensive Evaluation of Fatigue Performance of Modified Asphalt Mixtures in Different Fatigue Tests
- Author
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Ming Huang, Benliang Li, Kun Li, and Haobai Zhong
- Subjects
Materials science ,fatigue life ,0211 other engineering and technologies ,020101 civil engineering ,02 engineering and technology ,Bending ,Overlay ,lcsh:Technology ,Bending beam ,0201 civil engineering ,lcsh:Chemistry ,chemistry.chemical_compound ,021105 building & construction ,two-point trapezoidal beam fatigue test ,General Materials Science ,Composite material ,lcsh:QH301-705.5 ,Instrumentation ,modified asphalt mixture ,Fluid Flow and Transfer Processes ,lcsh:T ,Process Chemistry and Technology ,General Engineering ,Polyethylene ,lcsh:QC1-999 ,Computer Science Applications ,lcsh:Biology (General) ,lcsh:QD1-999 ,chemistry ,four-point bending beam fatigue test ,lcsh:TA1-2040 ,Asphalt ,Objective evaluation ,lcsh:Engineering (General). Civil engineering (General) ,lcsh:Physics ,Beam (structure) ,overlay tester ,Test data - Abstract
The four-point bending beam fatigue test (4PB), two-point bending trapezoidal beam fatigue test (Trapezoidal Beam), and Overlay Tester (OT) are used to evaluate the fatigue performance of six kinds of asphalt mixtures that are widely used in engineering, and newly developed ones. The result shows that, in all three kinds of fatigue tests, the fatigue performances of the 6% SBS (styrene-butadiene-styrene block copolymer) modified asphalt mixture is the best, and those of the 10% WPE (waxed polyethylene) + 3% SBS, 4% SBS + 0.4% PA610, and 4% SBS modified asphalt mixture are good. The fatigue performances of the warm modified mixing agent and the base asphalt mixture are the worst. An increase in SBS content can effectively improve the fatigue performance of the asphalt mixture. The fatigue performance of the SBS-modified asphalt mixture can be improved by the addition of WPE and PA610. In different tests, the ranking of fatigue performance of the asphalt mixture is similar, and the specific ranking is slightly different. The three different fatigue tests can be used simultaneously to obtain a more comprehensive and objective evaluation in the R&, D process for a new modified asphalt. The three fatigue tests process shows that more precise forming and cutting technology is needed, as the strain range used in the 4PB test is very wide, and the number of samples used in each group is small. The preparation of the Trapezoidal Beam test samples is complex, the amount of test data is huge and has high precision, which is suitable for scientific research instead of a field laboratory, and the strain range of the test is moderate in the three methods. The strain range of the OT test is the narrowest, the test specimen is relatively simple to prepare, and the fatigue performance of a specific modified asphalt mixture can be obtained quickly in a simple laboratory.
- Published
- 2019
- Full Text
- View/download PDF
9. The transition from quantum field theory to one-particle quantum mechanics and a proposed interpretation of Aharonov–Bohm effect
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Qi Jie Wang, Benliang Li, Daniel W. Hewak, School of Electrical and Electronic Engineering, School of Physical and Mathematical Sciences, Centre for OptoElectronics and Biophotonics, Centre for Disruptive Photonic Technologies, and The Photonics Institute
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Electromagnetic field ,Physics ,Quantum Field Theory ,Quantum Physics ,General Physics and Astronomy ,Virtual particle ,FOS: Physical sciences ,Elementary particle ,Electron ,01 natural sciences ,Physics::History of Physics ,010305 fluids & plasmas ,Electromagnetic ,symbols.namesake ,Maxwell's equations ,Quantum mechanics ,0103 physical sciences ,symbols ,Electrical and electronic engineering [Engineering] ,Quantum field theory ,010306 general physics ,Aharonov–Bohm effect ,Quantum Physics (quant-ph) ,Quantum - Abstract
In this article we demonstrate a sense in which the one-particle quantum mechanics (OPQM) and the classical electromagnetic four-potential arise from quantum field theory (QFT). In addition, the classical Maxwell equations are derived from a QFT scattering process, while both classical electromagnetic fields and potentials serve as mathematical tools to approximate the interactions among elementary particles described by QFT physics. Furthermore, a plausible interpretation of the Aharonov-Bohm (AB) effect is raised within the QFT framework. We provide a quantum treatment of the source of electromagnetic potentials and argue that the underlying mechanism in the AB effect can be understood via interactions among electrons described by QFT where the interactions are mediated by virtual photons., Comment: 19 pages, 2 figures. Final published version
- Published
- 2018
10. Cavity QED of superradiant phase transition in two dimensional materials
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Benliang Li, Wang Qijie, and School of Electrical and Electronic Engineering
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Electromagnetic field ,Quantum phase transition ,Physics ,Superradiant phase transition ,Photon ,Quantum mechanics ,Engineering::Electrical and electronic engineering [DRNTU] ,Cavity quantum electrodynamics ,Quantum field theory ,Quantum ,Rabi frequency - Abstract
In modern physics, the investigation of the interaction between light and matter is important from both a fundamental and an applied point of view. Cavity quantum electrodynamics (cavity QED) is the study of the interaction between light confined in a reflective cavity and atoms or other particles where the quantum nature of light photons is significant. The strong interaction between an exciton and cavity photon in a high-finesse microcavity can induce a hybrid light-matter eigenstate which is usually named as polariton in solid-state systems. This strong light-matter interaction can be achieved when this interaction is larger than all broadenings caused by other various factors e.g. electron phonon scattering and cavity loss. The polariton is now stimulating tremendous research interests due to its high potential in cavity quantum electrodynamics (QED) and the achievement of polaritonic devices. Moreover, when the interaction strength between an excitation and the cavity photon, quantified by vacuum Rabi frequency, becomes comparable to or larger than the corresponding electronic transition frequency in a cavity, the system can enter an ultrastrong coupling regime, which has been experimentally observed. In this regime, the standard rotating-wave approximation is no longer valid and the antiresonant term of the interaction Hamiltonian starts to play an important role, giving rise to exciting effects in cavity QED.The Aharonov-Bohm (AB) effect is a fundamental quantum phenomenon that bears the significance of the nature of electromagnetic fields and potentials. Besides its fundamental significance in quantum theory, its importance for applications in interferometric devices is omnipresent. Recently, since the 2D materials have triggered immense interest, some work has been done to integrate the AB effect with the electronic and transport properties of 2D materials.This thesis consists of two parts. In the first part, the light-matter coupling between cyclotron transition and photon is theoretically investigated in some 2-D materials such as the monolayer MoS2, graphene and monolayer black phosphorene (BP) systems. The results show that, in these 2-D materials, the ultrastrong light-matter coupling can be achieved at a high filling factor of Landau levels. Furthermore, we show that, in contrast to the case for conventional semiconductor resonators, the MoS2 system shows a vacuum instability. In monolayer MoS2 resonator, the diamagnetic term can still play an important role in determining magnetopolariton dispersion which is different from monolayer graphene system. The diamagnetic term arises from electron-hole asymmetry which indicates that electron-hole asymmetry can influence the quantum phase transition. Meanwhile, we show that, similar with some other 2D materials such as graphene and MoS2, the monolayer BP system shows a vacuum instability. However, in contrast with other 2D materials, the BP system displays a large energy gap between three branches of polaritons because of its strong anisotropic behavior in the eigenstates of the band structures. For thegraphene system, we investigate the coupling of cyclotron transition and a multimode cavity described by a multimode Dicke model. This model exhibits a superradiant quantum phase transition, which we describe exactly in an effective Hamiltonian approach. The complete excitation spectrum in both the normal phase and superradiant phase regimes is given. At last, in contrast to the single mode case, multimode coupling of cavity photon and cyclotron transition can greatly reduce the critical vacuum Rabi frequency required for quantum phase transition, and dramatically enhance the superradiant emission by fast modulating the Hamiltonian. Our study provides new insights in cavity-controlled magneto-transport in these 2-D systems, which could lead to the development of polariton-based devices. The second part is a diversion from the main content of this thesis; readers who are not interested in foundational issues of physics can skip this part. For one charged quantum particle P moving in an electromagnetic vector potential Aˆµ = ( φˆ, - Aˆ ) created by some other charged particles, we can either use the framework of one particle quantum mechanics (OPQM) to calculate the evolutions of P, or we can treat this as an multi-particles problem in the framework of quantum field theory and calculate the evolution of P. These two methods need to be equivalent, i.e., they produce the same result for the evolution of P. One open question is how to describe the evolution of P within the framework of quantum field theory and show that these two methods yield the same result? In chapter 5, we are going to derive the OPQM from the quantum field theory, i.e., the quantum electrodynamics (QED) to be specific. We start with the discussions on the AB effect then raise a plausible interpretation within the QED framework. We provide a quantum treatment of the source of the electromagnetic potential and argue that the underlying mechanism in AB effect can be viewed as interactions between electrons described by QED theory where the interactions are mediated by virtual photons. On further analysis, we show that the framework of one particle quantum mechanics (OPQM) can be given, in general, as a mathematically approximated model which is reformulated from QED theory while the AB effect scheme provides a platform for our derivations. In addition, the classical Maxwell equations are derived from QED scattering process while both classical electromagnetic fields and potentials serve as mathematical tools that are constructed to approximate the interactions among elementary particles described by QED physics. This work opens up a new perspective on the nature of electromagnetic fields and potentials.
- Published
- 2018
11. Superradiant phase transition with graphene embedded in one dimensional optical cavity
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Benliang Li, Daniel W. Hewak, Tao Liu, Qi Jie Wang, School of Electrical and Electronic Engineering, School of Physical and Mathematical Sciences, The Photonics Institute, Centre for OptoElectronics and Biophotonics, and Centre for Disruptive Photonic Technologies
- Subjects
Quantum phase transition ,Photon ,Physics::Optics ,02 engineering and technology ,01 natural sciences ,law.invention ,Superradiant phase transition ,symbols.namesake ,law ,0103 physical sciences ,General Materials Science ,Electrical and Electronic Engineering ,010306 general physics ,Physics ,Condensed matter physics ,Single-mode optical fiber ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Superradiant Phase Transition ,Optical cavity ,symbols ,Electrical and electronic engineering [Engineering] ,Graphene ,0210 nano-technology ,Hamiltonian (quantum mechanics) ,Excitation ,Rabi frequency - Abstract
We theoretically investigate the cavity QED of graphene embedded in an optical cavity under perpendicular magnetic field. We consider the coupling of cyclotron transition and a multimode cavity described by a multimode Dicke model. This model exhibits a superradiant quantum phase transition, which we describe exactly in an effective Hamiltonian approach. The complete excitation spectrum in both the normal phase and superradiant phase regimes is given. In contrast to the single mode case, multimode coupling of cavity photon and cyclotron transition can greatly reduce the critical vacuum Rabi frequency required for quantum phase transition, and dramatically enhance the superradiant emission by fast modulating the Hamiltonian. Our work paves a way to experimental explorations of quantum phase transitions in solid state systems.
- Published
- 2017
12. Ultrastrong light-matter coupling of cyclotron transition in monolayer MoS2.
- Author
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Benliang Li, Tao Liu, Hewak, Daniel W., Zexiang Shen, and Qi Jie Wang
- Subjects
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MOLYBDENUM disulfide , *CYCLOTRONS , *LIGHT matter interaction (Quantum optics) , *PHASE transitions , *ASYMMETRY (Chemistry) - Abstract
The light-matter coupling between cyclotron transition and photon is theoretically investigated in a monolayer MoS2 system with consideration of the influence of electron-hole asymmetry. The results show that ultrastrong light-matter coupling can be achieved at a high filling factor of Landau levels. Furthermore, we show that, in contrast to the case for conventional semiconductor resonators, the MoS2 system shows a vacuum instability. In a monolayer MoS2 resonator, the diamagnetic term can still play an important role in determining magnetopolariton dispersion, which is different from a monolayer graphene system. The diamagnetic term arises from electron-hole asymmetry, which indicates that electron-hole asymmetry can influence the quantum phase transition. Our study provides new insights in cavity-controlled magnetotransport in the MoS2 system, which could lead to the development of polariton-based devices. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
13. Clock Synchronization of Wireless Distributed System Based on IEEE 1588.
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Li Li, Benliang Li, and Houjun Wang
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- 2010
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14. Route Simulation Research of Wireless Sensor Networks Based on Truetime.
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Houjun Wang, Bin Yan, Xiaojia Zhou, Li Li, and Benliang Li
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- 2009
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15. Research on Clock Synchronization of Wireless Distributed Measurement System.
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Houjun Wang, Jianguo Huang, Yibing Shi, Li Li, and Benliang Li
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- 2009
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16. PDF Research on IEEE802.11 DCF in Wireless Distributed Measurement System.
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Li Li, Houjun Wang, Chijun Zhang, Benliang Li, and Bin Yan
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- 2009
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17. Performance Analysis of Wireless Distributed Measurement System Based on IEEE802.11.
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Benliang Li, Houjun Wang, Li Li, and Bin Yan
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WIRELESS communications performance ,IEEE 802.11 (Standard) ,WIRELESS LAN standards ,DISTRIBUTED computing ,ELECTRONIC data processing ,COMPUTER network management - Published
- 2008
18. The Research of Applying Wireless Sensor Networks to Intelligent Transportation System(ITS) Based On IEEE 802.15.4.
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Benliang Li, Houjun Wang, Bin Yan, and Chijun Zhang
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- 2006
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19. Study and simulation on a dynamic gyroless north finder.
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Benliang Li, Qitai Gu, and Xuebin Liu
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- 2000
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20. Differential Hydrocarbon Accumulation Controlled by Structural Styles along the Southern and Northern Tianshan Thrust Belt.
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Yan, SONG, Mengjun, ZHAO, Shihu, FANG, Benliang, LI, Shaobo, LIU, and Qingong, ZHUO
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HYDROCARBONS ,BIOACCUMULATION ,STRUCTURAL analysis (Science) ,THRUST faults (Geology) ,ROCK deformation ,STRUCTURAL geology ,COMPRESSION loads - Abstract
The Kuqa and the Southern Junggar foreland thrust belts, which lie to the southern and northern Tianshan, respectively, were formed under a strong compressional tectonic setting. Due to the differential propagation and deformation under the control of the décollement horizon, the structural deformation styles differ in the Kuqa and Southern Junggar thrust belts. Imbricated stacking is developed in the Kuqa thrust belt, forming a piggyback imbricated pattern of faulted anticline and fault-block structural assemblage dominated by salt structures. In contrast, wedge-shaped thrusts are developed in Southern Junggar, mainly forming vertical laminated patterns of multi-wedge-structure stacks strongly influenced by the décollement horizons. The different deformation patterns and structural styles of the north and south of Tian Shan control the contrasting characteristics of hydrocarbon accumulation in the foreland thrust belts of the Kuqa and the Southern Junggar thrust belts, including the variance in the hydrocarbon trap types, pathway systems and hydrocarbon-bearing horizons. Proven by the hydrocarbon accumulation research and exploration achievements, recent exploration targets should focus on sub-salt piggyback imbricated structural patterns in the Kuqa and the deep laminated patterns in the Southern Junggar thrust belt. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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21. Meso-Cenozoic Tectonic Events Recorded by Apatite Fission Track in the Northern Longmen-Micang Mountains Region.
- Author
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Yongliang, LEI, Chengzao, JIA, Benliang, LI, Guoqi, WEI, Zhuxin, CHEN, and Xin, SHI
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CENOZOIC paleogeography ,STRUCTURAL geology ,APATITE ,FISSION track dating ,MIOCENE stratigraphic geology ,LONGMEN Caves (China) - Abstract
There is a cross-cutting relationship between the E-W trending structures and the NE-trending structures in the northern Longmen-Micang Mountains region, which reflects possible regional tectonic transition and migration. Apatite fission track (AFT) analyses of 15 samples collected from this area yield apparent ages varying from 30.3±4.2 Ma to 111.7±9.0 Ma and confined-track-lengths ranging from 10.6±0.3 μm to 12.4±0.1 μm. Four specific groups were identified on the basis of the Track Age Spectrum Calculation (TASC) patterns, i.e., 143-112 Ma, 93.6-88 Ma, 42-40 Ma and ∼25.6 Ma. These age groups correspond to the spatial distributions of datasets and may represent four tectonic events. Together with the regional deformation patterns, the four age groups are interpreted to indicate tectonic superposition, transition and migration during the Meso-Cenozoic with the following possible order: (1) the Micang Mountains belt was dominated by the E-W trending structure during 143-112 Ma; (2) the contraction of the Longmen Mountains belt from the NW to the SE during 93.6-88 Ma led to the superposition of the NE-trending structures over the E-W trendinding structures; (3) dextral strike-slip shear dominated the Longmen Mountains belt at 42-40 Ma; (4) westward migration of the active tectonic belt occurred from 93.6-25.6 Ma in a break-back sequence in the northern Longmen Mountains belt. The Late Cenozoic tectonics in the northern Longmen Mountains belt are characterized by the dextral strike-slip shear and the occurrence of westward break-back sequence of deformations. As a result, north-south differences in deformations along the Longmen Mountains belt were intensified since the Miocene time and strains were mainly accumulated in the hinterland of the Longmen Mountains instead of being propagated to the foreland basin. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
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22. Silurian to Devonian foreland basin in the south edge of Tarim Basin.
- Author
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Guoqi, Wei, Chengzao, Jia, Benliang, Li, and Hanlin, Chen
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PLATE tectonics ,DEVONIAN stratigraphic geology ,SILURIAN stratigraphic geology - Abstract
Reports that, based on the theory of plate tectonics, combining with the isotopic dating of ophiolite, igneous and volcanics, geochemical tests rare earth element analyze and seismic interpretation, this paper studies the pre-Carboniferous tectonics and sedimentary formation of the south edge of the Tarim Basin and proves that there exists the Kunlun Ocean under tensional tectonics during the Sinian and Cambrian in the south edge of the Tarim Plate. Statement that, due to the collision orogenesis, there formed the peripheral foreland basin in the south edge of Tarim; Reference to the fact that Upper Silurian and Devonian molasses sedimentary system superposed on the Sinian and Middle Silurian passive margin flysch sedimentary system and formed the bivariate structure of the foreland basin; Identification, based on the field geology and seismic interpretation, that the formation of the Silurian and Devonian have the character of half deposit which shows thick in the south area and thin in the north, and the pre-Carboniferous thrust compression tectonics remained in the foreland thrust belt, which further demonstrates that there existed the Silurian and Devonian peripheral foreland basin on the south edge of the Tarim Basin.
- Published
- 2002
- Full Text
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23. Longmen Shan fold-thrust belt and its relation to the western Sichuan Basin in central China: New insights from hydrocarbon exploration.
- Author
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Dong Jia, Guoqi Wei, Zhuxin Chen, Benliang Li, Qing Zeng, and Guang Yang
- Subjects
GEOLOGICAL basins ,HYDROCARBONS ,SEDIMENTS ,RIFTS (Geology) - Abstract
The Longmen Shan fold-thrust belt is one of the key regions of demonstrable Mesozoic-Cenozoic tectonic evolution in China, and the Sichuan Basin was the first natural-gas-producing area in China. In this article, the structural features of the Longmen Shah belt are presented, using both seismic profiles and field data. The complex structures of the northeast-trending Longmen Shan fold-thrust belt and its foreland in the western Sichuan Basin are formed by southeast-directed thrusting. Several eastward-verging, rootless thrust sheets and imbricates of Cambrian-Triassic rocks have been recognized in the northern Longmen Shan belt. Evidence suggests that the northern Longmen Shah belt experienced at least two major periods of deformation in the Late Triassic and Cenozoic. However, the southern Longmen Shah belt is represented by the basement-involved thrust structures and klippen, and its major periods of deformation were in the latest Cretaceous early Cenozoic. Sedimentary features in the western Sichuan Basin reflect a two-phase flexural-loading history and illustrate that the Late Triassic foreland basin extends along the foredeep of the entire length of the Longmen Shan belt, but the uppermost Cretaceous-Paleogene rejuvenated foreland basin is restricted in the southern part of the western Sichuan Basin. Structural geometries suggest that prospective traps are mainly developed in the frontal zone of the Longmen Shan fold-thrust belt and in the southern part of the western Sichuan Basin. One of the major contributions of this article is finding preexisting Paleozoic rift basins under the Cenozoic thin-skinned thrust belts, which represent a new potential hydrocarbon play. [ABSTRACT FROM AUTHOR]
- Published
- 2006
- Full Text
- View/download PDF
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