Final answer:
Georgia O'Keeffe used oil paint and watercolors to create her abstract paintings, often featuring close-ups of natural elements and southwestern themes.
Step-by-step explanation:
As Georgia O'Keeffe developed her abstract style, she utilized various media in her paintings, including oil paint and watercolors, to create her large-scale, extreme close-ups of flowers, landscapes, and skulls. O'Keeffe's approach to art was significantly influenced by the concepts espoused by Arthur Dow, particularly the belief that art should be expressive and comprise harmonious lines, mass, and colors. One notable abstract work, 'Blue and Green Music,' demonstrates her use of color and form to translate the rhythm and depth of music into a visual painting. Similarly, the work 'Ram's Head White Hollyhock and Little Hills' shows her unique style, capturing the juxtaposition of flora, landscapes, and skeletal elements against dynamic skies, which was significant in her southwestern-inspired pieces.