BANGKOK — A Scottish tourist has been gored to death by an elephant that he and his 16-year-old stepdaughter were riding on the resort island of Samui, Thai authorities said Tuesday. Thai news reports said the elephant became enraged after its trainer, known as a mahout, climbed off to take a picture of the tourists. The beasts were used for logging, but deforestation and a subsequent ban on most logging has led to many elephants now being used as tourist attractions.