chart area in a sentence

1. On these charts areas with a large quantities of oil as depicted as high terrain and areas with a small quantities of oil are depicted as low terrain.
2. At age 29, Villas Boas joined his three brothers _ Claudio, Alvaro and Leonardo _ in the Roncador-Xingu expedition sent by the government to chart areas for future towns and cities in the Amazon and central western Brazil.
3. It's difficult to find chart area in a sentence.