抄録
It is surely by far the most interesting to inquire why an extraordinary concentration in a distribution of oil resources exists, not only in its geographical location but also in its geological age. That is the concentration into the geological strata of the Jurassic and the Cretaceous Systems of the Arabian Plate.
Thanks to the current development of the geophysical plume theory and related sciences, we can now guess the reason to some extent. The plume theory found the mega-cycles of repeated catastrophe; that is, all the sub-continents got together into one super-continent and then split by itself with every “Wilson Cycle” of around 300 to 900 million years.
In short, the period from the last stage of the Jurassic Period to the first half of the Cretaceous Period was a very peculiar one. The period corresponded to the transition stage of “Wilson Cycles” and was presumed to be the most active one when mantle convection started splitting the Pangea, the last super-continent. Concentration of carbon dioxide in the atmosphere was extraordinary high and warm weather continued for a long time. Planktons flourished and left unusual amount of limestone and organic materials at the same time. Too much organic materials caused anoxia at the sea bottom and also high atmospheric temperature caused sea water uniform and ocean current minimum. There is a possibility that the dead bodies of plankton had been buried without decomposition by bacteria and had been later matured into oil. This supports the indigenous oil generation theory.
To be sure, this scenario may be a key to the most enigmatic question to which this treatise is concerned. At any rate, to know this peculiarity is the most important for all of us who spend an abundance of oil.
