Reports, Volume 9 |
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Page 10
... vein at Iron mountain . 12. Section showing relation of conglomerate beds to limestone . 13. Diagram illustrating channel form of bowlder deposits . 14 . Contour map of Pilot Knob and vicinity . MINE LA MOTTE SHEET : Fig . 1 . Position ...
... vein at Iron mountain . 12. Section showing relation of conglomerate beds to limestone . 13. Diagram illustrating channel form of bowlder deposits . 14 . Contour map of Pilot Knob and vicinity . MINE LA MOTTE SHEET : Fig . 1 . Position ...
Page
... vein at Iron mountain 58 58 12. Section showing relation of conglomerate beds to limestone .... 13. Diagram illustrating channel form of boulder deposits . 14. Contoured map of Pilot Knob and vicinity 59 59 62 REPORT ON THE IRON ...
... vein at Iron mountain 58 58 12. Section showing relation of conglomerate beds to limestone .... 13. Diagram illustrating channel form of boulder deposits . 14. Contoured map of Pilot Knob and vicinity 59 59 62 REPORT ON THE IRON ...
Page 17
... veins were formed . . 2. Along the main road leading from Pilot Knob to Farmington , about 50 yards south of Brewer's creek , in section 15 , township 34 N. , 4 E. , boulders of dike rock were seen . The rock is quite fine- grained , is ...
... veins were formed . . 2. Along the main road leading from Pilot Knob to Farmington , about 50 yards south of Brewer's creek , in section 15 , township 34 N. , 4 E. , boulders of dike rock were seen . The rock is quite fine- grained , is ...
Page 19
... veins pass into the porphyry , showing that they have been formed since the dike rock solidified . The rock itself is fine- grained , and possesses no qualities which would particularly distinguish it from other small dike rocks . 13 ...
... veins pass into the porphyry , showing that they have been formed since the dike rock solidified . The rock itself is fine- grained , and possesses no qualities which would particularly distinguish it from other small dike rocks . 13 ...
Page 56
... veins , including iron ores , were of eruptive origin , and their source being deep within the earth , the size of a given deposit would increase rather than diminish as the workings grew in depth . It is not necessary to add that this ...
... veins , including iron ores , were of eruptive origin , and their source being deep within the earth , the size of a given deposit would increase rather than diminish as the workings grew in depth . It is not necessary to add that this ...
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Common terms and phrases
Archean Ardmore arenaceous argillaceous Bevier coal Bevier sheet blue bottom boulders calcareous Chariton river chert clay coal bed coarse color crystalline crystals dark deposits depth diabase dike dike rock Doe Run drab drift drill DRILL-HOLE East fork erosion Eureka shaft exposed exposures feet A. T. feet thick feldspar fine-grained Fire-clay fissile following section formation fragments Fredericktown Geological Survey grains granite gray grit Higginsville hole horizon inches Interval to top Iron Mountain sheet Ironton Lagonda Limestone loess Lower Coal Measures Macon City Macon City coal magnesian mass Middle Coal Measures Middle fork mile west mining Missouri river Motte Mulky numerous occur outcrops Paleozoic Pilot Knob porphyry portion quarry quartz railway sandstone sandy seam Section sheet Shale shaly Shepherd mountain slopes soil stone strata stream texture Thomas Hill tion topographic Total thickness township valley veins Warrensburg Waverly yellow
Popular passages
Page 81 - Ocean, the first thing which strikes us is, that, the north-east and south-east monsoons, which are found the one on the north and the other on...
Page 11 - Probibly three-fourths of the geological facts are recorded cartographically. In consequence, therefore, a modern geological map is a graphic summary of a vast amount of useful information. In addition to an accurate representation of the ordinary geographical features, as in the best atlases, a properly constructed geological map records much more. On it are indicated, within a few feet, the...
Page 12 - ... of economic value contained in the several beds, and the best places for obtaining all these substances. The map also forms a reliable soil index which, with some additional explanation serves also as a guide to the distribution of the forests and plants generally. But all the districts of the State cannot be treated alike in the mapping. Some places require far more work than others, either on account of the great importance of the mineral deposits or the natural difficulties caused by the ruggedness...
Page 3 - Major, and the Members of the Board of Managers of the Bureau of Geology and Mines: Gentlemen...
Page 49 - The true stratigraphic and structural relations of this formation, however, seem not to have been recognized. It appears generally to have been considered of Lower Coal Measure age, and to have been correlated with the inter-stratified sandstones of the Lower Coal Measures, referred to on other pages of this report. The peculiar conditions of occurrence of this formation have, however, received no satisfactory explanation in print, to the writer's knowledge.
Page 13 - Thus, one formation is abundantly supplied with coal, another with the ores of zinc and lead, a third with materials for the manufacture of cements, and others with still different substances of economic value. Each is found in a particular geological zone, and rarely or very sparingly elsewhere. Only within certain districts would search for a given substance be successful; outside of these areas no amount of prospecting would ever disclose the material sought.
Page 13 - ... other purposes. Upon it may be based models of the more important districts which are to be taken as characteristic of much larger areas, and which are to represent in a graphic manner the structure, arrangement and relations of deposits. Eventually a relief model of the. entire state may be constructed on a suitable scale. Besides for the purposes mentioned, it would afford one of the most instructive objects for presenting to the pupils of schools the geographical features of their state. With...
Page 14 - At the outset a clear understanding of the geological structure of the rocks containing it is of prime importance. The localities where each occurs require description ; the arrangement, relations and extent of the deposits must be defined; the origin and properties discussed; the accessibility and value determined ; the uses of the substances, the nature and status, both present and probable future, of the industries connected fully considered.
Page 14 - ... value. Each is found in a particular geological zone, and rarely or very sparingly elsewhere. Only within certain districts would search for a given substance be successful; outside of these areas no amount of prospecting would ever disclose the material sought. In obtaining information concerning each particular mineral substance, the entire subject must be carefully considered. At the outset a clear understanding of the geological structure of the rocks containing it is of prime importance....
Page 49 - The peculiar conditions of occurrence of this formation have, however, received no satisfactory explanation in print, to the writer's knowledge.! The theory here advanced concerning this deposit is that it is of fluvial or lacustrine origin, that it fills a channel which was eroded in the surrounding, regularly deposited strata, during a temporary emergence of these strata from beneath the waters of the Coal Measure swamp. The leading reasons for this conclusion are briefly the following : 1. The...