Geology and Mineral Potential of the Usk Map Area (NTS 103I/09), Terrace, British Columbia

The Usk map area spans the val ley of the Skeena River and its trib u tar ies, over a 530 km area north and east of the town of Ter race, Brit ish Co lum bia (Fig. 1, 2). It in cludes the lower parts of the Zymoetz (= Cop per) River and Kleanza Creek, which flow south west from their re mote head wa ters in the Howson Range be tween Ter race and Telkwa. Chimdemash, St. Croix and Le gate creeks drain the Mount O’Brien mas sif east of the Skeena River. Trib u tar ies west of the river are Car pen ter, Sand, Hardscrabble, Shan non, and Lowrie creeks. The top o graphic names sug gest ep i sodes in a long his tory of set tle ment. Zymoetz is an an cient name de scrib ing the spread of trans lu cent pale blue col our where its wa ters join the tur bid, brown Skeena River. Hardscrabble re fers to early placer min ing work; Ste.-Croix and Le gate were pros pec tors. Mount O’Brien was named for a young Terrace man killed in World War II.