. The Australian zoologist. Zoology; Zoology; Zoology. VERTEBRATES OF VICTORIA FOSSIL CAVE subhorizontal, and jointing is well developed in two dominant directions — the major one is parallel to the ridge direction (north northwest) and the other is at right angles (east northeast). Much of the history of cave development can be reconstructed from the caves themselves, and from rock sections exposed in quarries near Naracoorte. Horizontal cave development has been controlled by the joint pattern (Fig. 1) while roof collapse has generally been along bedding planes, giving rise to flat ceilings
. The Australian zoologist. Zoology; Zoology; Zoology. VERTEBRATES OF VICTORIA FOSSIL CAVE subhorizontal, and jointing is well developed in two dominant directions — the major one is parallel to the ridge direction (north northwest) and the other is at right angles (east northeast). Much of the history of cave development can be reconstructed from the caves themselves, and from rock sections exposed in quarries near Naracoorte. Horizontal cave development has been controlled by the joint pattern (Fig. 1) while roof collapse has generally been along bedding planes, giving rise to flat ceilings in larger caverns. Most of the larger caverns have formed along the major north northwest joint direction, and are connected at floor level by networks of tunnels. This implies that most cave development took place by dissolution of fallen roof blocks at the phreatic zone of an ancient water table, now stranded some six metres above the present valley floors. The main period of cave formation is believed to have occurred in the Late Miocene/Early Pliocene, following the marine regression of the Mid-Miocene (Sprigg 1952). The Gambier Limestone was subjected to a period of sub-aerial. Fig. 3. Section through the Naracoorte Ridge at Town Quarry, (a) Pleistocene sands of stranded coastal dune with calcrete soil profile; (b) Pleistocene coarse sands and shelly beach deposits, Pliocene Parilla sands; (c) in-filling old karstic surface; (d) Miocene Naracoorte Member of the Gambier Limestone. Aust. Zool. 21(4), 1984 309. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Royal Zoological Society of New South Wales; Royal Zoological Society of New South Wales. Proceedings. [Sydney, Royal Zoological Society of New South Wales]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1914
