Exercise: Evaluating Water Cemistry Changes through Rw Mapping

The map displays the basin troughs and highs. Seismic mapping indicates that northeast-to-southwest-trending faults exist within the basin. Use this information to answer the following questions:

1. Do the changes in water character aid in indicating where a northeast-to-southwest-trending fault may be located? Draw in the fault.
2. These faults form in conjugate pairs. Do the changes in water character indicate a second sealing fault? Where? Draw in the fault.
3. Over distance, formation water can display a salinity gradient. Draw in resistivity contours where a gradient appears.

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