The Geologii of Coimaidai. 197 



(2) Sand and gravel. 



(3) Quartzite. 



(4) Gravel, sand and ferruginous conglomerate. 

 The whole rest on Silurian and Glacial. 



II. — Section at junction of Goodman's and Back Creeks, showing 

 uneven (eroded?) junction of sandstone with glacial 

 mudstone. A thin line of angular pebbles occurs 

 along the junction. 



III. — Section along GH on map. 



(1) Hard cemented conglomerate and quartzite. 



(2) Sand and gravel,, with clay and lenticles of limestone. 



(3) Magnesian limestone containing casts of Limntea, etc. 



(4) Basalt. 



The whole lies on Silurian. 

 IV. — Section along ABC on map, showing the Goodman's Creek 

 series of Glacial beds. 



(1) Well stratitied mudstones, in which occurs. 



(2) Zone of large numerous and well scoi'ed boulders. 



(3) More or less unstratified beds (glacial conglomerates) 



passing upwards into 



(4) Sandstones containing occasional erratics. 



The whole is capped by tertiary gravels and conglomerates, and 

 is intersected by numerous basalt dykes. 

 V. — Section along DEF. 



(1) Thin bed of pipe clay containing leaf impressions 



(Laurus Werribeensis) and interstratified with sand 

 and gravel. 



(2) Thin beds or lenticles of magnesian limestone. 



(a) Thin bed of volcanic ash interstratified with limestone 

 containing Marsupial bones. 



(3) Glacial beds. 



(4) Silurian. 



The whole capped by basalt 30-40 feet. 



