Type locality: Whitestripe Mountain about 4 1/2 miles east of Portlock Harbor, western Chichagof Island, southeastern Alaska; named for type locality. Prominent light-gray marble averaging several hundred feet in thickness that crops out discontinuously for more than 25 miles near west coast of Chichagof Island. Near Pinnacle Peak abruptly terminated by fault; Crops out to southeast as scattered thin lenses. Overlies Goon Dip Greenstone with apparent conformity; underlies Pinnacle Peak Phyllite and contact is unclear and may be tectonic. Age is Triassic(?).
Source: GNU records (USGS DDS-6; Menlo GNULEX).
Assigned as second lowest formation (above Goon Dip Greenstone) of newly redefined Kelp Bay Group. Thickness varies from maximum 1500 ft in Chichagof mining district to average of several hundred feet elsewhere; in southern extent, often less than 100 ft thick. May correlate with limestone in Late Triassic Hyde Formation of Admiralty Island and in the Hyd Group of the Keku Straits area. No correlative rocks were found on Baranof Island. No IN SITU fossils; coralline fossil of possible Triassic age found in boulder in Goon Dip River (Reed and Coats, 1941).
Source: GNU records (USGS DDS-6; Menlo GNULEX).
Whitestripe Marble removed from the Kelp Bay Group; it is not present in type area of Kelp Bay Group and it is recognized as part of Wrangellia terrane whereas group belongs to Chugach terrane. Two terranes separated by Border Ranges fault. Correlated with Late Triassic Chitistone Limestone of Wrangell Mountains by Jones and others (1977). Triassic(?) age assignment retained.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
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