NEW ZEALAND ROCKS. 
GEOGRAPHIC ARRANGEMENT. 
woe 
Owe oO 
10 
11 
12 

PROVINCE OF AUCKLAND. 

THAMES DISTRICT, 
Tararu Creek, 
Porphyry Dyke Stone. 
Porphyry. Tramway Cutting. 
Decomposed Porphyritic Tufa. Outcrop of Duke’s 
Motto Claim. 
Decomposed Tufa, lies under the Undecomposed 
Tufa. Duke’s Motto. 
Porphyritic Tufa, occurs as a “Bar,” Duke’s 
Motto. 
Zinc Blende. 
Greenstone Breccia. Tramway Cutting, next below 
the junction with Tinkev’s Gully. 
Fragment of an old Greenstone Breccia, which 
has been broken up to form No. 7. 
Calcite, occurring on the edges of the jointsin the 
Breccia No. 7. 
Melaphyre. Below Russell’s Mill. 
Cavernous Quartz, with Mundie. 
above the Junction. 
Tufaceous Greenstone Breccia, decomposed by in- 
filtration of water. Cutting for Russell’s Mill 
Mississippi reef, 
ace. 
13 Undecomposed Breccia, a part of No. 12. 
