This is interesting, but I don't totally agree with Shor being the male anolog to "Mother Earth." Isn't usually the god of the underworld a different role in RW cultures, like being the ruler and caretaker of the departed rather than a nurturing provider? Also, I still believe Mara continues to take that role. Though not Nordic, the Water-Getting Girl does refer to the mothers of the Around-Us. She could be the concubine who just keeps on birthing.
Not always. Besides, an earth god doesn't have to be a nurturing provider. Take, for instance, the olympian gods. Zeus set himself up as the patron diety, sharing dominion with his two brothers, Poseidon and Hades. Zeus took the sky and gave the ocean and earth to Poseidon and Hades respectively. This also made Hades the god of earthly wealth, since precious gems and metals are found within the earth.
I would say shor is very much akin to Hades in this respect. Shor, as Lorkhan, birthed the earth (Nirn) itself through an idea. Then, as the dead god Shor, became lord of the underworld. Hades was a god of wealth, and Shor is the "greedy man". Just think about it for a while, and it begins to make perfect sense.
The idea of a nurturing provider diety whose spheres of influence include the earth is more of a female concept, than a male. If the earth god of a particular pantheon is, in fact, male, then the nurturing aspect is not included, usually. There are other gods and goddesses that take this into account. Such as a goddes of hearth and home, like Hestia. Or a goddess of agriculture and nature, like Persephone or her mother. After all, the earth must be worked in order for it to provide for man. Earth-mothers nurture. Earth-fathers provide for those who are willing to work for it.