What is the author's style in Avalon by Anya Seton?

Anya Seton uses many of the original words and phrases consistent with the time period Avalon is set in. There is a smooth transition between English and Norse sayings and traditions. Beginning in Merewyn's home town, where Viking raids are described, and continuing with secular life, this story moves along well. Descriptions of the varied countrysides ranging from England to Greenland bring the reader not only into the story but into the time period as well.