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File Created: 15-Feb-1988 by Steve B. Butrenchuk (SBB)
Last Edit:  01-Jan-0001 by BC Geological Survey (BCGS)

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Name MEOSIN MOUNTAIN NORTH Mining Division Liard
BCGS Map 093I029
Status Showing NTS Map 093I08W
Latitude 054º 17' 05'' UTM 10 (NAD 83)
Longitude 120º 19' 45'' Northing 6018492
Easting 673855
Commodities Phosphate Deposit Types F07 : Upwelling-type phosphate
Tectonic Belt Foreland Terrane Ancestral North America
Capsule Geology

The region is underlain by an assemblage of sedimentary rocks consisting mainly of continental margin and shelf facies rocks. This assemblage was deposited on and to the west of the ancestral North American craton. These sedimentary rocks, for the most part typical miogeoclinal facies, range in age from Hadrynian to Upper Cretaceous. Structurally these rocks are part of the Foreland Thrust and Fold Belt of the North American Cordillera.

In this region phosphatic beds are commonly found in Upper Paleozoic to Lower Mesozoic rocks. These are exposed to the west of a major thrust fault which has thrust these rocks over younger, mainly Cretaceous strata. The Cretaceous strata is exposed to the east.

A 1.3 metre thick phosphorite bed occurs near the base of the Whistler Member of the Sulphur Mountain Formation, Spray River Group. Host rocks for the phosphorite are siltstone, calcareous siltstone and minor limestone.

Two thin phosphatic siltstone beds occur in the upper part of the Vega-Phroso member of the Sulphur Mountain Formation. Phosphate occurs as fluorapatite.

EMPR FIELDWORK *1987, p. 405
GSC P 71-30
GSC MAP 1424A; 1869A
EMPR PFD 15041, 896433