Papurau Newydd Cymru

Chwiliwch 15 miliwn o erthyglau papurau newydd Cymru

Cuddio Rhestr Erthyglau

9 erthygl ar y dudalen hon

^~^IKTLOGEN'S REPORT.

THE MINERAL BASIN OF SOUTH…

Newyddion
Dyfynnu
Rhannu

THE MINERAL BASIN OF SOUTH WALES. An interesting treatise on the coal and ironstone field of South Wales hasjust been published by Mr. Frederick Moses, mineral surveyor, of Neath, dedicated to landed proprietors, ironmasters, and others interested. He has treated it in a manner which shows him to have well considered the pecu- liar locality, the dip, various faults, &c. Geologists have always represented this mass of mineral wealth as divided into two elongated curvilinear troughs, with a ridge be- tween, known as the anticlinal axis, understood by miners as the saddle-back; the author dissents from this opinion, and, during his experience, he has always found it more approximating the angular form, as in the following dia- gram :— He then proceeds to describe the various strata and coal and iron measures extending from Pontypool on the east, passing through Risca and Pentyrch on the Taff, north of Bridgend and Pyle, passing under the waters of Swansea Bay appearing again between Swansea and the Mumbles, crossing the peninsula of Gower to St. Bride's Bay; here it turns to the north through the Gwendraeth Valley, Sir- howy, Nantyglo, on to P«ntypool. It is estimated at 700,000 acres in area, with a thickness of coal of So ft., ana ironstone IS ft. A cubic yard of coal is estimated to weigh a ton, and a cubic yard of ironstone about 35 cwts. The old red sandstone is deemed the base of this grand superstruc- ture, and varies much in appearance, and contains the remains of fishes and fossils. The next in the ascending scale is the carboniferous, or mountain, limestone, used in the smelting of iron, of which 1 ton is used to make a ton of iron; it is of a compact structure, varying from bluish- black to a light gray colour, and fossil marine animals are lavishly imbedded in it. Above this is the millstone grit, or plum-pudding stone, composed of quartz, pebbles, &c., of various colours, and the lower part agglutinated by a calcareous argillaceous deposit; above this, again, is the farewell rock, and on which reposes the whole series of the coal measures, consisting of the lower, or ironstone, the Pennant, and the red ash measures. He then describes the Dudley coal-field, the Appalachian in North America, the Edinburgh, and the Duh^tfow, in Ireland, showing the nature of their several faults. In a description of the pas- sage of bituminous coal into anthracite, he says—" The change from bituminous to anthracite was caused from im- mense pressure acting from above, underneath, and laterally, at one and the same time; this must, of necessity, have given rise to friction, which in its turn set the internal ele- ments-probably electricity—in operation on the mass, forcing the bitumen or volatile matter in a state of gas through its pores, overcoming every resisting opponent in its course. Indeed, the greater the resistance, the more fierce became the agent, which increased in proportion to the accumulation of pressure and friction, leaving only be- hind it the traces of a once primeval bituminous existence in the tarry lustre of the anthracite. It is also known that in every fault, and on nearly every crop of coal and iron- stone in the basin, there is found, what miners term, burnt ground, showing an appearance of having been subjected to the all but spent influence of some powerful internal ele- ment, and as we proceed upwards, the coal becomes more bituminous-thus showing that it had been deprived of its bitumen, in proportion to the pressure exerted on it." The pamphlet forms an interesting geological essay. THE IRON TRADE. Most of the works, where suspension did not arise from pecuniary embarrassments, are now again in partial opera- tion but in several instances furnaces have been blown in, and the make of iron increased, under a premature expect- ation that railway and other orders would by this time be freely forthcoming. Such hopes have not been realized, and indeed they seem to have had no better foundation than flimsy predictions put forth by writers who trusted to the halcyon results of free-trade policy. The prevalent feeling of all parties seem to be a want of confidence, and desire to con- vert into cash, as if some convulsion were dreaded from the great and increasing number of bands out of employ. Hence the trade still remains in a languishing condition, more especially where the principal dependencies are upon foreign connections, a large portion of such specifications being continually countermanded or indefinitely suspended; and no purchases are now made except for the absolute re- quirements of daily consumption. Until the prevailing Continental excitement is allayed, and the security of our widely extended mercantile interests shall have been demonstrated, we shall progress but slowly towards reviving prosperity; yet the traces of the storm we have endured, although sufficiently calamitous, are not in- compatible with the future well-being of the trade. The make of Staffordshire iron has been reduced nearly one- half-trading without capital has been diminished—pro- duction without prospect of consumption has been checked —the infatuation of making sales at a ruinous loss, for the mere sake of doing business, has been met by a lesson that will not soon be forgotten-and various additional erections at an outlay repeatedly deprecated by us, aienow aban- doned. Under such circumstances, when confidence shall be re-established we may look forward to a revival of trade based upon a more equalized rate of production and demand, less ruinous competition, and better-secured credit. Extreme opinions are cherished as to the result of the approaching Quarterly meetings. Those who hold stocks still fondly cling to the day-dream of "a further advance," while to some a considerable reduction both in iron and wages appear more probable. Circumstances present such a daily varying aspect, that, for our. own part, we do not feel justified in expressing more than a hope that both will be disappointed, and that a sufficient steadiness will prevail to •ecure unaltered rates. It is confidently stated that an importation of nearly four hundred bars of railway iron has taken place by a vessel arrived from New York. This is one of several arrivals 01 the kind which have recently taken place from the United States.—Gazette,

THE COMMISSIONERS' REPORTS.

LONDON MARKETS.

TO THE BEVEREND H. GRIFFITHS,…

STATE OF THINGS IN FRANCE.

FRIDAY'S LONDON GAZBTTIi —…

SMITHFIELD. MONDAT.

I -THE METAL TRADE.