Complex sentence: Salmon was a prominent member of the Geological Society of America, the American Association for the Advancement of Science, the American Association of Petroleum Geologists; though she was also a member of many groups outside of her educational and professional field.
Split into simpler sentences: Salmon was a prominent member of the Geological Society of America, the American Association for the Advancement of Science, the American Association of Petroleum Geologists. Though she was also a member of many groups outside of her educational and professional field.