180 PROCEEDINGS OF SECTION C. 



General Description of the Islands. 



Woody Island. — This is situated in Great Sandy Strait, midway 

 between Fraser Island and the mainland, and is about 3 miles off 

 Dayman Point. It is approximately 6 miles in length and | mile 

 in width at the widest part, and 200 feet above sea-level at its lughest 

 point. 



The shape of the island has been determined very largely by the 

 various earth-movements and metamorphic processes to which the 

 beds composing it have been subjected. 



The direction of greatest length of the island conforms very closely 

 with the general strike of the beds, i.e., 40° W. of N. The island 

 stands out from the water like the back of a huge whale, with steep 

 cliffs up to 200 feet high on the N.E. side and gradually sloping down 

 to sea-level on the S.W. side, in the direction of the dip of the beds. 



Along the greater portion of the S.W. side of the island there is 

 an accumulation of beach-gravel which dams back the water running 

 off the slopes. . This gravel attains a height of perhaps 15 feet in places, 

 and forms a narrow strip up to 20 feet wide running parallel to the 

 shore-line. On the inland side of this strip there exists a long narrow 

 marsh formed as a result of the damming back of the inland drainage. 

 The island is well timbered, from which fact it no doubt derives 

 its name. 



With the exception of the portion of the coast-line which is covered 

 with beach-gravel excellent exposures of the beds making up the island 

 may be seen around the coast-line. At low tide the shore-line is laid 

 bare in many cases hundreds of yards beyond highwater mark, and 

 magnificent sections are exposed. As a result of this and owing to 

 the constancy in strike and the very slight interference by faulting here 

 and there, the very gradually shelving coastal strip presents the appear- 

 ance of having been ploughed up with a huge plough and then con- 

 solidated. 



Picnic Island and Duck Islands. — These lie about a mile to a mile 

 and a half south-east of Woody Island, and each one has a similar 

 shape to that of Woody Island. 



These islands are much smaller, however, the largest being only 

 about a quarter of a mile in length and 40 yards wide, and 50 feet high 

 at its highest point. Owing to the dip of the beds being rather less 

 than on Woody Island, the slope to the S.W. is not so pronounced as 

 on the latter island. 



Little Woody Island. — This lies between Woody Island and Fraser 

 Island, and is approximately | mile long and 100 yards wide. On this 

 island the steep cliffs are on the S.W, side, and the slope of the ground 

 to the N.E., the result of the beds dippingr in a N.E. direction. 



As will be shown later, there is little doubt that there is a denuded 

 anticline between Woody Island and Little Woody Island. 



