Complex sentence: At Amherst, Lakdawalla worked to study deformed metasedimentary rocks of northeastern Washington, while working at Brown on analyses of Magellan radar images and topographic data in the region of Baltis Vallis, Venus, to determine its deformational history.
Split into simpler sentences: At Amherst, Lakdawalla worked to study deformed metasedimentary rocks of northeastern Washington. Simultaneously she worked on research at Brown to analyze Magellan radar images and topographic data in the region of Baltis Vallis, Venus, to determine its deformational history.