Park. — Marine Tertiaries of Otayo and Canterbury. 543 



5. Black - ovster bed with Conchothi/ra parasitica, 



McCoy. 



6. Quartzose sands with shale and brown coal. 



7. Quartzose sands with bands of limonitic sandstone. 

 The full succession is exposed in the Waipara Valley, 



between Ram Paddock and the slopes of Doctor's Range ; but 

 only beds 1, 2, and 3 are seen in the Weka Pass, the direction 

 of the dip not permitting the exposure of the lower beds. 



The general arrangement of the Weka Pass Stone and 

 Amuri limestone on the west side of the stream is very well 

 seen from the railway-line, standing at a point near the 45- 

 mile post. The section from the lower to the upper end of 

 the gorge is as shown in fig. 15. 



SSW. 



IHVE. 



4. 2-mzZ&s ■> 



T-ug /5. 



Section along West Side of Weka Pass. 

 a. Lower end of pass. b. Small stream, c. Opposite 45-mile post. 

 d. 45J-mile. e. Opposite viaduct. /. Upper end of gorge. 1. Weka 

 Pass Stone. 2. Amuri limestone. 3. Upper greensands. 



The section exposed at the 45-mile post, running from the 

 pass eastward to Mount Donald Range, is shown in fig. 16. 



Ttq/6. 



Section from Pass eastward. 

 a. Weka Pass. b. Mount Donald Range. Waipara series : 1, Amuri 

 limestone; 2, Weka Pass Stone. Oamaru series: 3, Blue sandy 

 clays ; 4, brown and greenish-grey sandstones ; 5, band of impure 

 limestone (coralline) about 24 ft. thick ; 6, soft brown sandstones, 

 fossiliferous in upper part ; 7, calcareous sandstone, richly fossili- 

 ferous in places. 



