What is the Mormon doctrine of burying their dead?

Answer 1

Beyond showing respect for the body, there is no set doctrine about burial of the dead. By tradition most members of the faith are buried but there is no actual requirement to do so. Members who have made temple covenants (basically covenanting in an LDS Temple to obey the commandments and otherwise live according to the Gospel) are usually buried in white clothing and their graves dedicated by a member of the Church holding the Melchizedek (senior) priesthood as a final resting place of their body until the resurrection.

Answer 2

Mormons don't really have a specific doctrine about burial of the dead. They do have some deeply held traditions, some of which have a doctrinal basis.

-Adult Mormons who have been "endowed" in a temple ceremony are usually buried with their temple robes. The deceased may be dressed in the robes or they may be folded and placed in the casket according to the family's preference.

-It is traditional for a Mormon family member of the same gender or a same-gendered church leader to dress the body or oversee the dressing of the body

-Mormons of all ages are usually buried wearing white clothing

-graves of Mormons are usually dedicated by a Bishop or other High Priest.

-burial is preferred, although cremation is gaining acceptance.