If the biology in the soil is right, you shouldnt have a problem with the plants getting minerals.
bacteria and fungi break down rock, sand etc..., and organic matter is releasing minerals all the time also.
im not opposed to adding things like kelp, which will break down and release lots of minerals fast
but the biology certainly should not be ignored either.
its the MOST important thing when it comes to the plant absorbing nutrients it needs.
my practice is adding coffee grounds, grass clippings and leaves on top the soil
with some wood chips on top of that
this provides a great environment for worms.
worms will work 24x7 to aerate the soil leaving holes packed with nutrients roots can use.
best damn workers i got.
if i really need a fast infusion (in poor soil) i add fish emulsion with a little molasses.
or, a compost tea or worm tea with fish and molasses added.
over time, adding leaves, grass clippings, compost etc...
will create the right environment.
no one fertilizes the forest, or adds seawater to it, and most trees do just fine.
You should watch a few videos by Dr. Elaine Ingham