The Lower Tertiarv (Miocene) lvfarine Sedimentary Rocks the North-Western Districts

The main objectives of this paper are to bring together all references to Tertiary marine roeks; to publish together the various lists of fossils determined from time to time and some of which have not been published; to publish a list of fossils from :Marrawah as determined by Mr. F'. Chapn1an in 1932-1933 (see Appendix), and to determine the agtc: of the rocks in accordanee with the palaeontological evidence. The age of the rocks is important because that of other roeks (e.g., basalt) in the same region is dependent upon the age of the Tertiary marine rocks. The far north-western districts are those to the west of a line joining Montagu and Balfour, and they represent the extreme north-western portion of the State (see map). The generic and spflcific names of f'ossils are those given in the descriptions of the palaeontologist who examined the specimens.