Judith Fancy Formation of Mount Eagle Group, St. Croix, VI, contains three members. Clairmont Member (oldest) is named for Estate Clairmont, north-central St. Croix. Occurs in Northside Range. Mapped as resistant bed of limestone and volcanic pebble conglomerate about 1.75 mi long and 50 ft thick. Thins to feather edge to east and west along strike. Contacts are distinct and nongradational. Contains Campanian Foraminifera. Recovery Hill Member is named for an Estate in East End Range. Lies about 3,000 ft from base of formation. Consists of blue-gray mudstone and subordinate fine-grained tuffaceous sandstone. Thickness about 1,000 ft. Lower contact is nongradational; upper contact rarely exposed, but probably gradational. Blue Mountain Member is named for a mountain in Northside Range. Highest peaks in St. Croix are composed of this member. Found 2,700 ft above base of formation. Consists of hard, resistant, olive-green, siliceous sandstone interbedded with fine-grained tuffaceous sedimentary rocks. Maximum thickness is 3,700 ft. Upper and lower contacts are gradational. Recovery Hill Member may be same unit as Blue Mountain Member (differing only in amount of silica present) as both occur at about same distance above base of Judith Fancy Formation. However, if Judith Fancy thickens to east, Recovery Hill would be stratigraphically below Blue Mountain; this is probably the case. All members are Late Cretaceous in age.

Source: GNU records (USGS DDS-6; Reston GNULEX).

Judith Fancy Formation and its Clairmont, Recovery Hill, and Blue Mountain Members are shown in figure 4 to belong to Mount Eagle Group and are assigned a Late Cretaceous (Campanian) age. The Clairmont and Blue Mountain Members are found in the Northside Range while the Recovery Hill Member is found in the East End Range.

Source: GNU records (USGS DDS-6; Reston GNULEX).