114 STRATIGRAPHICAL GEOLOGY OF THE PERMO-CAR-BONIFEROUS SYSTEM IN THE MAITLAND-BRANXTON DISTRICT, With some Notes on the Permo-Carboniferous PALiEOGEO-graphy in New South Wales. By A. B. Walkom, B.Sc, Linnean Macleay Fellow of the Society in Geology. Page. Preliminary Lower Marine Series Greta Coal-Measures Upper Marine Series Palseogeographical Notes.. 114 115 127 134 139 (Plates viii.-xiii., and ten text-figures.) This paper is the result of about four months' fieldwork in the Hunter River District, the area examined during that period being bounded on the north by the Hunter River, and on the other three sides roughly by a line drawn through West Maitland, Mt. Vin-cent, Mt. View, and Belford, and also a small area north of the Hunter River, between West Maitland and Paterson. The most important work done on this area is Professor David's memoir on "The Geology of the Hunter River Coal-Measures of New South Wales."* In that work, the coal-measures are worked out in detail, but the Lower Marine Series and the Upper Marine Series are not treated in as great detail as the coal-bearing series. It was with the object of obtaining a more detailed knowledge of these two marine series, that this work was done. One portion of the outcrop of the Greta Coal-Measures, namely, that extending south from Branxton, was not very well-known at the time Pro-Mem. Geol. Survey N. S. Wales, Geology No. 4, 1907.
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