Florence Bascom was an American geologist known for her innovative use of petrography in studying crystalline rocks and identifying their origins. In 1896, she became the first woman hired by the United States Geological Survey. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On Venus they are named after deceased women who have made outstanding or fundamental contributions to their field (if over 20 km). If smaller common female first names are used.
Image Source. Marker locations are approximate and may not always appear to align with image on map.