Some Basalts from the North Kimberley, W'estern Australia. 
79 
6.— SOME BASALTS FROM THE NORTH KIMBERLEY, 
WESTERN AUSTRALIA. 
By A. B. Edwards, Ph.D., D.I.C. 
Read 12th November, 1940 ; PublisluHl loth May, 1942. 
CONTEXTS. 
Introdiution ... 
General Geology 
Petrology : t\vo-]iyroxene doieiltes, two-])yroxene andesine-basalts, 
ande.sine-l)a.salts, niioro(-rystalline-andeKine-l)a«alts, hornblemle- 
oligoelase-l)asalts, tuff 
Diseussioii 
l..ist of Kef(‘ren(‘es ... 
Illustrations ... 
Page 
70 
81 
82 
8 (> 
89 
9(M)3 
INTRODLATIOX. 
The following notes are intended to supplement our meagre knowledge 
concerning the petrology of the basalts of the North Kimberley region of 
Western Australia (Fig. 1). They are based on an examination of two small 
collections, one of which was made by Mi^ssrs. A. Gibb Maitland and C. Cl. 
Gibson, in 1901, when they were attached to the Brockman Exploring Ex- 
l^edition (Brockman and Crossland,. 1901), and the other by Mi*. W. ^^'^Fitz- 
gerald, who accompanied the Crossland b^xjXHlition in ioOo. (Fitzgerald, 
Figure 1. 
Locality Map, showing the position of the North Kimberley (shaded). 
Maitland and Gibson explored the country in the neighboiirliood of Wynd- 
ham ; the gorge of the Isdell River ; the land to the west, north-west and 
north of the S^\Tinott Tableland, including the Synnott Creek, the Charnley 
i 142/42. 
