Additional Details

Description

The Carmel Formation is considered the confining unit between the D aquifer and the underlying N aquifer on Black Mesa, Arizona. Leakage of ground water from the D aquifer into the N aquifer, however, has been detected in the southern part of Black Mesa in recent geochemical studies. In this investigation, borehole-geophysical data and lithologic descriptions from drilling logs were used to relate the thickness and lithology of the Carmel Formation to ground-water leakage in the southern part of Black Mesa. This area of leakage corresponds to the area where the Carmel generally is 120 feet thick or less. The formation is likely a sandy siltstone where leakage has been detected and a clayey siltstone in areas where leakage has not been detected.

Survey Date

2006

Print Date

2006

Two Sided

Yes

Pieces

2

Languages

English