Dr Jones would be described as sensation seeker in arousal theory.
Explanation:
Sensation seeking is the behavior portrayed by someone who seeks to pursue new experiences, passions, feelings or different experiences. It is also referred to as excitement seeking or thrill-seeking. People known as sensational seekers in most cases love to explore and love experience just for the sake of it and also take risks for their exploration.
They are motivated by gaining new experiences and ability to conquer whatever challenges in their thrill-seeking quest. Danger and fear may not scare them if they are motivated to take on the challenge just like Indiana Jones going to a foreign land without much consideration of the danger on the way or in the city.