![Stratigraphy of Nam Con Son Basin (Swiecicki & Maynard, 2009)](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQv8j6j8kQtbPPVDROOClLldfVKRPHOtmnZ0B7MI_gyflXn0L0bnoaFMIcYMmERxKyU4WEC_Z9ekiMhZzO2dJbotiyzLtRPxLX0Kvs7iyJLeDlv9PrP2wUBRuONlHzs5uQQqLJwkw1VH8Q/s1600/viet-ncs-seis-swiecicki-strat.jpg)
Key seismic sections were published by Swiecicki and Maynard (2009):
Seismic expression of rifting events (Swiecicki & Maynard, 2009) shows 2 major rifting episodes:
1) Oligocene- Early Miocene rift system (Oligocene North-South extension)
2) Middle Miocene - Pleistocene rift system (Middle Miocene NW-SE extension)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhn7_OrPvIORN6qJgeM033uIGBd0-ntWbjbem_0NQGGN9d5lZcWpci5D_tSuQN4DGS-O55vY_b3CBDojLGK8NxYuTv5DL9Cjwp-zwI3B4-BlROmlw7iDYgnsPFxDeBdO9e0JdrhlxKz8LHW/s1600/viet-ncs-seis-swiecicki-2.jpg)
Regional cross section
Lan Tay and Hoa Dao structure complex on a NW-SE regional seismic line by Restrepo-Pace (2007).
1st Rift system
Tien Cau syn-rift and Cau post rift as indicated on seismic.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi_JeG1b1y2vcKtBkJ36LCBDtagmYRbc9GiIVzuT5lMekm3WTKChWHXXDLAzdH-1aTO8ZxV8lIRN9339Km1uLQUN4YzD-3vsZ-kmQb4PaTiSwpuc3QQD-Pr-O9mWMvMTK3MFulT3RLLg-SR/s1600/viet-ncs-seis-swiecicki-4.jpg)
2nd Post rift deposits
Seismic details on Dua Formation, Early Miocene in age
Mang Cau Syn-Rift 2
Significant thickening towards Hoa Dao high is observed in this seismic section.
Nam Con Son Post Rift 2.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjcC8EkPQrc5s2hN65iy13GXTheCMNE-W7xOOazrLnGegBWB4bCw4vegR9NDzxXdXUJSymWgWVJgiHXmIdPIVwqSqZDOfEEzzvXMlCTrYKdPtNcywOdNeXEEeR2OjLkfdqM3mW_gQRsfi2/s1600/viet-ncs-seis-swiecicki-7.jpg)
Bien Dong - Post rift sag phase
Progradational sequence on top of bathyal shales (transparant unit)
Bien Dong - Post rift sag phase
Progradational sequence on top of bathyal shales (transparant unit)
Time slice showing the channel complex.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgG998TrPWOPDqDdX7eLhPa53_xxyiVgDMTCgyHrBpHM7NYI9zQ_yS7j_feEhyphenhyphenyf0aalxNWjGPKXoXa3kaXzv7MuG6m3fsQmnkvEXKAKWzmsw_VqAuBJNnSPFUaEe9yIsstkhh1t9Vy8pIZ/s1600/viet-ncs-seis-swiecicki-10.jpg)
Eearly Pliocene (LBD) Channel System
Time slide and seismic section in both strike and dip directions.
Upper Bien Dong progradational system
Petronas Tower as a scale for the canyon system on the left.
Comparing seismic sections and time slice.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgdiZd7Hx16WeNC9W_u1YQCkJAciMoZ8t4V6Ud-J84-CAiSs9PCrjCBzvj7hDJMbmqTyBid8cahj5OAJIps5U8uPAU2T8zKNNcZD5o03LqDH09xWqysI6PWSkdgmHH0D2F8THWxr4RHwBUU/s1600/viet-ncs-seis-swiecicki-12.jpg)
Reference:
Swiecicki, T. and Maynard, K., 2009, Geology and Sequence Stratigraphy of Block 06/94, Nam Con Son Basin, Offshore Vietnam, SEAPEX
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