Figure 6.  (A) Location map and (B) generalized cross section AA’ of north Fort Worth Basin area showing main gas- producing area of continuous Barnett Shale accumulation at Newark East field and the various geologic conditions.  Large bold numbers in (A) relate to the proposed continuous Barnett Shale assessment units of Table 1.  Gas window in (A) approximates zone of gas generation, and oil window approximates zone of oil generation. Modified from Hall (2002) and Bowker (2002).