Simulation of Luxoturbidite in Front of Delta

Key words: 
• delta front /
• fluxoturbidite /
• flume experiment /
• seismicity /
• wave action

Abstract: The fluxoturbidite in front of delta is an important kind of lithologic hydrocarbon reservoirs in fault basins. According to interior flume experiment simulations, the formation of fluxoturbidite in front of delta is studied under different conditions. The laboratory findings show that trigger mechanisms are the precondition to form turbidite, which include external mechanisms such as seismicity and wave action and internal mechanism such as compaction and depression of deltafront sands under gravity. Seismicity can damage the stability of delta front and form liquefied fluxoturbidite and faulted fluxoturbidite. The sediments of delta front around wave base plane are eroded by wave action and took along to redeposit below wave base plane, during which turbidite is formed. Without external mechanisms the sands in inlet of main stem can compact and descent to underneath mudstone and form fluxoturbidite. The driving force of fluxoturbidite to migrate mainly is the gravity of slumping sands. Moreover, the collisionpower from hinder overlapped sand body is also the motility of faulted fluxoturbidite to move more distant besides its own gravity.
〖WTHZ