38 NOTES ON THE GEOLOGY OF MARIA. ISLAND. 



Crinoid remains. No traces of the flower-like head have 

 been found but fossils of the main stem and branching 

 arms are very frequent. It would appear as if these re- 

 mains had collected on some outlying reef where the waves 

 had broken them up into fragments and destroyed the 

 softer parts. It makes a splendid crystalline limestone, 

 exceeding hard to quarry out, which was at one time 

 worked for lime, btit the collapse of the kilns led to 

 its abandonment. The limestones seem to persist along 

 the western base of the mountain, and resting o^n them, 

 is a band of Mesozoic sandstones, and above those the dia- 

 base cap so frequently found in Central and Pouith-E astern 

 Tasmania. Frequently between the limestone and sand- 

 stone is a band of Permo-Carboniferous gritstone. 



The only other feature of interest is a curious red- 

 dish coloured stone appearing under the diabase neax 

 the jetty at Shoal Bay, and at Bloodstone Point on the 

 other side of Long Point. It has the appearance of a 

 highly decomjDosed granite. If so, it is the most westerly 

 exjjosiure on Maria Island. 



