That this is a Hypogene rock, sometimes in contact with granite as well as with trap, is evident at Oxley's Table Land, and other places.
"Journal of an Expedition into the Interior of Tropical Australia In Search of a Route from Sydney to the Gulf of Carpentaria (1848) by Lt. Col. Sir Thomas Livingstone Mitchell Kt. D.C.L. (1792-1855) Surveyor-General of New South Wales"
Thomas Mitchell
Table of the Analysis of Minerals in the Volcanic and Hypogene Rocks.
"The Student's Elements of Geology"
Sir Charles Lyell
Hypogene formations, stratified and unstratified.
"The Student's Elements of Geology"
Sir Charles Lyell