Fishhook Anticline

Location

Northern Pike and southeastern Adams Counties (F-2)

References

Meents 1958, Howard 1961

Description

Fishhook is a doubly plunging anticline approximately 30 miles (48 km) long and as much as 5 miles (8 km) wide. Closure of approximately 100 feet (30 m) has been mapped on top of the Silurian (Meents 1958) and on top of the middle Ordovician Galena Group (Howard 1961). Dips on both limbs are more or less equal. The anticline strikes northwest, parallel with the Pittsfield Anticline. A gas field was discovered in 1955 in vuggy dolomite of the Alexandrian Series (Silurian) at the crest of the Fishhook Anticline. Gas from this field went to local users until 1979, when a pipeline was completed, allowing commercial production. Cumulative production of 2 billion cubic feet has been reported.