Sedimentary Basins and Crustal Processes at Continental Margins: From Modern Hyper-extended Margins to Deformed Ancient Analogues

Continental margins and their fossilized analogues are important repositories of natural resources. With better processing techniques and increased availability of high-resolution seismic and potential field data, imaging of present-day continental margins and their embedded sedimentary basins has reached unprecedented levels of refinement and definition, as illustrated by examples described in this volume. This, in turn, has led to greatly improved geological, geodynamic and numerical models for the crustal and mantle processes involved in continental margin formation from the initial stages of rifting through continental rupture and break-up to development of a new ocean basin. Further informing these models, and contributing to a better understanding of the features imaged in the seismic and potential field data, are observations made on fossilized fragments of exhumed subcontinental mantle lithosphere and ocean–continent transition zones preserved in ophiolites and orogenic belts of both Palaeozoic and Mesozoic age from several different continents, including Europe, South Asia and Australasia.
Cretaceous provenance change in the Hegang Basin and its connection with the Songliao Basin, NE China: evidence for lithospheric extension driven by palaeo-Pacific roll-back
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Published:January 01, 2015
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CiteCitation
Mingdao Sun, Hanlin Chen, Fengqi Zhang, Simon A. Wilde, A. Minna, Xiubin Lin, Shufeng Yang, 2015. "Cretaceous provenance change in the Hegang Basin and its connection with the Songliao Basin, NE China: evidence for lithospheric extension driven by palaeo-Pacific roll-back", Sedimentary Basins and Crustal Processes at Continental Margins: From Modern Hyper-extended Margins to Deformed Ancient Analogues, G. M. Gibson, F. Roure, G. Manatschal
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Abstract
The Cretaceous Hegang Basin is located on the Jiamusi Block, NE China, and separated from the Songliao Basin by the Lesser Xing’an Range (LXR). Seismic interpretation shows that the Chengzihe, Muling and Dongshan formations of the Hegang Basin thicken eastwards with westwards onlap, indicating that the LXR existed as a palaeo-uplift during that period, whereas the Houshigou Formation shows no thickness change, indicating that the LXR was possibly under water at this time. This is supported by results of detrital zircon analysis from the Hegang Basin in which the Chengzihe Formation is dominated by approximately 180 Ma zircons, which...
- absolute age
- Asia
- basin analysis
- basin inversion
- basins
- China
- chronostratigraphy
- Cretaceous
- depositional environment
- extension tectonics
- Far East
- geophysical methods
- geophysical profiles
- geophysical surveys
- Heilongjiang China
- ICP mass spectra
- ion probe data
- lithosphere
- mass spectra
- Mesozoic
- Nenjiang Formation
- Pacific Plate
- petrology
- plate tectonics
- provenance
- Qingshankou Formation
- reconstruction
- rifting
- sedimentary basins
- sedimentation
- seismic methods
- seismic profiles
- SHRIMP data
- Songliao Basin
- spectra
- structural analysis
- surveys
- tectonics
- thickness
- U/Pb
- Xiao Hinggan Ling
- Yaojia Formation
- Jixi Group
- Denglouku Formation
- Dongshan Formation
- Chengzihe Formation
- Muling Formation
- Houshigou Formation
- Jiamusi Block
- Hegang Basin
- Mashan Complex
- Heilongjiang Complex
- roll-back