GEOLOGY OF THE GLOUCESTER DISTRICT, N.S.W. 245 



their greatest development in the upper part of the Burindi 

 Series, where they are associated closely with the lava 

 flows, and here they are in some cases fairly coarse. They 

 contain an abundance of quartz and felspar grains, more 

 rarely a little biotite and with occasional fragments of 

 rhyolite. 



(e) The Lava Flotvs. — Three distinct lava flows have 

 been noted in the Burindi Series, all outcropping in the 

 valley of the Barrington River on the lower north-western 

 and western slopes of the Gloucester Buckets. These lavas 

 are quartz-keratophyres, and are described in detail on page 

 253. The lowest flow (No. 1) may be seen outcropping on 

 the Oopeland road immediately west of its junction with 

 the Bowman River road, from here its outcrop runs just 

 north of and parallel to the Oopeland road for over a mile. 

 As the village of Barrington is approached the outcrop 

 swings to the north-west, crosses the road and disappears 

 under the river flats of the Barrington River. Some lava 

 flows outcropping on Portion 57 Parish of Verulam are 

 probably a continuation of this flow. The Nos. 2 and 3 

 flows, which are higher in the series, outcrop to the south 

 of the Oopeland road, and their outcrops follow a similar and 

 parallel course to the No. 1 flow. They have been traced 

 as far south as McOraes farm (Port. 4, A. A. Oos. sub- 

 division). Some similar lava flows which outcrop on the 

 Gloucester River road (Port. 85 Parish of Verulam) are no 

 doubt the southern continuation of these flows. 



II. The Burindi Fossils. — The following is a list of the 

 fossils so far found in the Burindi Series. Not much atten- 

 tion has been given to the collection of fossils, so that the 

 list given is probably by no means exhaustive : — 



Lycopodiales... Lepidodendron (decorticated stems), 



(? L. veltheimiamum). 

 Actinozoa ... Zaphrentis sp. ind. 



