Admittedly, these known examples of inheritance are usually modern or recent volcanic rocks and usually only involve a couple of hundred thousand years of radiometric age, but this is thus suggestive of the possibility of inheritance in ancient volcanic rocks, such as these in Grand Canyon.
(this; is; thus suggestive of the possibility of inheritance in ancient volcanic rocks, such as these in Grand Canyon)
this
is
thus suggestive of the possibility of inheritance in ancient volcanic rocks, such as these in Grand Canyon