The late stage basin-fill history of the fluvial Dupi Tila Group (Plio-Pleistocene) is described.
The paleocurrent flows were eastwards and westwards during the early and late stages of basin development and northwards and southwards during its middle stage, indicating typical forearc basin sedimentation with longitudinal supply and lateral filling.
Fault movement and stages of basin development controlled the subsidence rates and the potential for erosion and the rate of sediment supply.
The first stages of basin opening and fill, predating ∼ 56 ka have only been inferred by stratigraphic considerations: the earliest lacustrine sedimentation should be middle Pleistocene or older in age.
Each of the three lacustrine sequence architectures stands for a particular stage of basin fill and reflects variable rates of basin subsidence.
Ordering of streams is the first stage of basin analysis.
In the final stage, the basin models need to be calibrated with existing data such as vitrinite reflectance, temperature, and porosity (AlKawai 2014) to make it more realistic.
A strong N-S tensional regime confirmed in the incipient stage of basin formation was not restricted to Beppu Bay, but was a regional phenomenon at the beginning of the Pliocene.
Based on a discrete element method, this suggests that structural differences in the deformed wedge are caused by differences in the dip angles of the detachment faults and that the study area was under strong N-S tensional stress through the early stage of basin formation.
At this stage the basin hopping algorithm is iterated a maximum of 100 times or until it returns 40 failed attempts to find a new global minimum Following parameter optimization to the average data, alternative models were tested by allowing only one or a few of these parameters to vary across conditions while holding all others constant.
8– 11 However, the predictive capacity of tumor depth and other primary tumor characteristics are still insufficient to negate the need for surgical staging of the cervical node basin.
