>
> - Since soils are so depleted of minerals, can we get an adequate
> supply of them from eating a "paleo" quantity of veg?

that is a false statement that is widelly distributed .

soils are not depleted , agricultural practices  have lock those minerals
and made them unavailable to plants but they are there  .
it is just enough top stop tilling the ground and to allow a great diversity
of species to come back and voila all those minerals are available  again .
peoples don't undertand soil because they see it separatelly from the plants
it  support . the most tragic exemple is in the tropical rain forest where
most of all the fertility is in the plants , once those gone the soil is
very poor .
organic agriculture don't adress this issue with satisfaction because they
don't question tilling ,happilly and unhappilly they limit the damage by
importing fertility from somewhere else (in the form of organic
fertilisers ) depleting somewhere else

paleo gatherers had a diet rich in minerals because the plants where grown
on untilled soils ( in fact self tilled and fertilsed by the work of the
differents life forms they support )
modern paleo eaters will be wise to eat plants from untilled grounds .
jean-claude