The Geology and Mineral Resources of the Norseman District, Dundas Goldfield Volume 18-21 epub
The Geology and Mineral Resources of the Norseman District, Dundas Goldfield Volume 18-21 epub
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Author: Andrew Gibb Maitland
Number of Pages: 122 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130924732
Download Link: The Geology and Mineral Resources of the Norseman District, Dundas Goldfield Volume 18-21
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...Dials, just outside the limits of the geological map, is a conspicuous hill forming the western extremity of a bed of metamorphic grit (or quartzite) and conglomerate, dipping at angles averaging about 50 degrees to the north-east; the quartzite rests upon greenstone schist, and has been affected by the same foliation which affects the latter. The quartzite is traversed by bauds of laminated quartz of the type prevailing in the district. Most of the pebbles in the conglomerate are flattened out almost beyond recognition, though in some places they are well shown on the weathered surface of the rock. Among the quartz schists which form the summit of what may be called the main range of Warrawoona is a bed which here and there contains what at.first glance appears to be fossil wood 5766. A characteristic specimen of this silicified wood (?) has a length of about 4 inches; cross sections of it are ellipsoidal in shape, the major axis being about three-quarters, and the minor axis about five-eighths of an inch in length. Microscopical sections both transverse and longitudinal were prepared, and were submitted along with the specimen to Mr. Etheridge of the Australian Museum, Sydney, who was unable to detect any trace of organic structure in them. It is, however, quite possible that the dynamic metamorphi8m which these rocks have undergone may have entirely obliterated all traces of organic structure, and that some form of plant life existed at the time these beds were deposited. Adjoining Lease 479, the Juneau, is a schist forming part of the main series which presents many points of interest. In hand specimens the rock 5787 is of a very light brownish colour, and is distinctly foliated. In addition to quartz, which forms no inconsiderable portion of the rock, ...
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The Geology and Mineral Resources of the Norseman District, Dundas Goldfield Volume 18-21 by Andrew Gibb Maitland
Author: Andrew Gibb Maitland
Number of Pages: 122 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130924732
Download Link: The Geology and Mineral Resources of the Norseman District, Dundas Goldfield Volume 18-21
---------------------------------------------------------------
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...Dials, just outside the limits of the geological map, is a conspicuous hill forming the western extremity of a bed of metamorphic grit (or quartzite) and conglomerate, dipping at angles averaging about 50 degrees to the north-east; the quartzite rests upon greenstone schist, and has been affected by the same foliation which affects the latter. The quartzite is traversed by bauds of laminated quartz of the type prevailing in the district. Most of the pebbles in the conglomerate are flattened out almost beyond recognition, though in some places they are well shown on the weathered surface of the rock. Among the quartz schists which form the summit of what may be called the main range of Warrawoona is a bed which here and there contains what at.first glance appears to be fossil wood 5766. A characteristic specimen of this silicified wood (?) has a length of about 4 inches; cross sections of it are ellipsoidal in shape, the major axis being about three-quarters, and the minor axis about five-eighths of an inch in length. Microscopical sections both transverse and longitudinal were prepared, and were submitted along with the specimen to Mr. Etheridge of the Australian Museum, Sydney, who was unable to detect any trace of organic structure in them. It is, however, quite possible that the dynamic metamorphi8m which these rocks have undergone may have entirely obliterated all traces of organic structure, and that some form of plant life existed at the time these beds were deposited. Adjoining Lease 479, the Juneau, is a schist forming part of the main series which presents many points of interest. In hand specimens the rock 5787 is of a very light brownish colour, and is distinctly foliated. In addition to quartz, which forms no inconsiderable portion of the rock, ...
Read online The Geology and Mineral Resources of the Norseman District, Dundas Goldfield Volume 18-21 Buy and read online The Geology and Mineral Resources of the Norseman District, Dundas Goldfield Volume 18-21 Download and read The Geology and Mineral Resources of the Norseman District, Dundas Goldfield Volume 18-21 for pc, mac, kindle, readers Download to iPad/iPhone/iOS, B&N nook The Geology and Mineral Resources of the Norseman District, Dundas Goldfield Volume 18-21 ebook, pdf, djvu, epub, mobi, fb2, zip, rar, torrent
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