What is the author's tone in The Garden of Eden by Ernest Hemingway?

There is a masculine sexual tone to the narrative. Sex flows like a subterranean river through the novel, propelling much of the action but seldom seen on the surface. During the idyllic "Garden of Eden" phase, David and Catherine seem ideally suited in every way. In actuality, they have little in common except sex and pleasure, and they exist in an unreal landscape devoid of work, social life or everyday responsibilities.