I20 



Miles and which is bituminous in character. The out- 



Kilometres. . , , i • r 



crop oi the coal seams hes at an elevation of 

 about 1,300 feet (396-2 m.) above Tulameen 

 river. The coal-bearing rocks dip into the 

 mountain side and rest on a floor of tilted 

 Triassic rocks. They are unconformably covered 

 in part by a flow of olivine basalt. A tunnel 

 has been driven 1,800 feet (548-6 m.) through 

 Triassic rocks, and cuts the coal-bearing rocks 

 at a depth of 700 feet (213-3 rn.) below the 

 outcrop. 

 152 m. Tulameen — Alt. 2,550 ft. (777-2 m.). Four 



244-6 km. and a half miles (7-24 km.) west of Coalmont 

 is the town of Tulameen situated at the junction 

 of Otter and Tulameen valleys. From this 

 point a subordinate excursion is made up 

 Tulameen valley for the purpose of seeing 

 some of the platinum-bearing placers, and the 

 original locality from which diamonds were first 

 found in place in Canada. 



GEOLOGY OF THE REGION AROUND TULAMEEN. 



GENERAL DESCRIPTION. 



The Tulameen district is situated on the western border 

 of the Interior Plateau of British Columbia, and a few 

 miles east of the Hope Mountain range, which is a part of 

 the Cascade system. The district has, in the main, the 

 general characteristics of plateau topography with a slightly 

 greater elevation and vertical relief owing to its proximity 

 to the Cascade mountains. 



The oldest rocks of the district consist of highly inclined 

 green schists, andesites, limestones and argillites. These 

 rocks are called the Tulameen series and are correlated 

 with Dawson's Nicola series which is Triassic in age. 

 The Tulameen series is intruded by batholithic bodies 

 of granite and granodiorite, as well as by a stock- 

 like mass made up of peridotite, pyroxenite, and gabbro, 

 which are transitional into each other. These rocks are 

 all of Jurassic age. Overlying them unconformably are 

 slightly inclined Oligocene volcanic and sedimentary rocks, 



