The google books link does not correlate petroleum deposits with Tasmanite beds (as far as I can see - it's rather difficult to use). It concerns post-glacial transitions in a range of tectonic settings and basin types without reference to associated petroleum deposits - see the section Concluding Remarks.
Tasmanite is actually the name of a particular plant (algal) spore and it is not a rock type as such. Hence Tasmanite oil shale.
It's apparent you have very little understanding of petroleum geology and I am not inclined to spend much more of my time with you on the subject. I have no wish to go on any more of your wild goose chases.