“…These can produce mineral, geochemical, biological and geophysical anomalies in overlying sediments and soils (Donovan et al, 1979;Schumacher and Abrams, 1996;Segal and Merin, 1989). Among these anomalies, bleaching of red beds, development of ferrous iron-bearing minerals, alterations of clay minerals and carbonates, and botanical anomalies can exhibit diagnostic surface spectral signatures that detectable using remote sensing techniques (Almeida et al, 2002;Fu et al, 2007;Sabins, 1999;van der Meer et al, 2002). Petrovic et al (2008) and Saunders et al (1999) found that remote sensing for hydrocarbon can greatly increase the probability of wildcat success and thus cost effectiveness in exploration.…”