Transactions and Proceedings and Report of the Royal Society of South Australia, 1886, Vol. 8 (Classic Reprint)

Author:   Royal Society of South Australia
Publisher:   Forgotten Books
ISBN:  

9780260447159


Pages:   226
Publication Date:   10 February 2019
Format:   Hardback
Availability:   In stock   Availability explained
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Transactions and Proceedings and Report of the Royal Society of South Australia, 1886, Vol. 8 (Classic Reprint)


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Excerpt from Transactions and Proceedings and Report of the Royal Society of South Australia, 1886, Vol. 8 In the absence of paleontological evidence all identification of rocks based solely on their lithological features is open to a greater or less amount of doubt, but a faithfully recorded sequence of conformable strata in any one locality becomes a clue deserving consideration when examining neighbouring districts the topographical features of which suggest a relation thereto. It has been shown that the upheaval of the western side of the Wakefield basin has had the effect of folding and faulting the beds of the upper group, producing. The swells which by denudation of the softer portions now form the numerous parallel ranges extending northward. In the troughs of synclinal folds, or along the line of faults, the numerous creeks have worn deep channels, and owing to this circumstance, i.e., the water following an indicated or ready-formed system of drainage, there are very few gorges or natural sections through out the whole district. What lies beneath the quartzites of the lower group is not visible in this district, but in the northern areas, at Tarcowie Springs, in the Appila Creek, a similar series of beds - which for the reasons just given I assume are identical with the Wakefield group - rest directly 011 mica schists, and both are pierced by a large dyke of porphyritic greenstone. The whole of the Pekina Range, extending as far north as Oladdie Station, seems identical in structure to the Wakefield basin two unconformab'le series of beds, the one principally argilla ceous, the other chiefly calcareous and siliceous. Between the Pekina and Wakefield beds lies the basin of the Broughton River, in which, according to Selwyn, the whole country 'is composed of one single series of rocks in anticlinal and syn clinal undulations extending from Bundaleer to the foot of Mount Bryan. This series I have traced into direct connection with what I have termed the upper group in the foregoing pages, and despite the absence of fossil evidence the inference is a very strong one that the Pekina and Wakefield lower group rocks are identical. We have thus an axis of upheaval extending from the latitude of Port Augusta to the shores of St. Vincent Gulf quite distinct from that of the Hummocks and Mount Remarkable systems, and nearly on the central meridian line of the Flinders Range, when considered as a whole. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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Author:   Royal Society of South Australia
Publisher:   Forgotten Books
Imprint:   Forgotten Books
Dimensions:   Width: 15.20cm , Height: 1.40cm , Length: 22.90cm
Weight:   0.458kg
ISBN:  

9780260447159


ISBN 10:   0260447153
Pages:   226
Publication Date:   10 February 2019
Audience:   General/trade ,  General
Format:   Hardback
Publisher's Status:   Unknown
Availability:   In stock   Availability explained
Limited stock is available. It will be ordered for you and shipped pending supplier's limited stock.

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