ber of localities. The points of its most conspicuous occurrence are in the road in the N. E. of section 10, township 49 N., 24 W., where it is about 20 feet below the Mulky coal bed at the Corder shaft, a mile north; again on the branch in the N. W. of section 16 of the same township it is exposed, and on the hillside, in the S. W. of section 7, where several small quarries have been opened for local uses. In the N. E. of section 23 of township 49 N., 25 W., it has also been quarried to a small extent. The sandstone at these localities is uniformly of a buff color, is ferruginous and micaceous, and of a soft texture; it occurs generally in layers ranging from 6 to 18 inches in thickness. At the Eckoff well, dug near the middle of section 22, township 49 N., 24 W., the following section was reported: At the Hoelscher well, in the S. W. of section 15 of the same township, and about a mile northwest of the last, the following section was obtained from the owner of the land: The bed of coal (No. 4) crops out in the adjacent gullies, and is seen to be of about the thickness given in the well, and to be overlain by a bed of black, calcareous limestone, some 6 inches thick. In township 49 N., 25 W., the division line between the Middle and Lower Coal Measures sinks so low topographically as to be very little above the level of the creek bottoms; hence, no exposures exist here from which sections can be constructed. At Aullville, however, within the Middle Coal Measure area, but near its margin, a churn-drill hole was sunk by Messrs. Roberts and Graham to a depth of over 200 feet, of which the following is a copy of the record kept by the drillers and furnished by Mr. Robert Anderson : SECTION XV. (No. 21 of Section Sheet.) RECORD OF AULLVILLE DRILL HOLE. Altitude of top of well about 720 feet A. T. (at railway level.) The strata of the Middle Coal Measures occupy the greater portion of the area south of the river; they immediately underlie the surface of all the upland country east of the line of the Warrensburg sandstone, and of a few square miles west of that formation. The boundary lines of this formation are so clearly marked on the map that no further description seems necessary here. The dividing line between this group and the underlying Lower Coal Measures has already been defined; its upper limits are not reached within the sheet, and hence will not be described. The total area represented on the sheet is 148 square miles. The prevailing rocks are shales and limestones, the former predominating; no persistent bed of sandstone is recognized in the section here. The shales are generally argillaceous, and of drab color, sometimes calcareous; near the coal beds they are generally black, bituminous and fissile; they occur in beds ranging in thickness from a few inches to over 30 feet. The limestones are in beds generally from two to six feet thick, but in places some of these beds reach a thickness of as much as 20 feet; they are generally of a very compact and fine texture, in massive beds, of a light drab color, breaking with a semi-conchoidal fracture. In the sections which have been previously described of the Lower Coal Measures, some Middle Coal Measure beds are also included, as was indicated in each case. In addition, the following sections are given to illustrate the character and the succession of the rocks and to preserve the records that have been obtained at various localities. Sections along the Missouri river.-In the manuscript notes previously referred to, Mr. Harrison records the following section measured in the bluff about a mile east of Waverly, which probably consists of Middle Coal Measure strata. SECTION XVI. BLUFF ABOUT ONE AND A QUARTER MILES EAST OF WAVERLY. Top of section is about 100 feet above the river botton (769 feet A. T.) Feet. Inches. 1. Slope (soil and Loess) 2. 20 Limestone, bluish, very hard, compact, heary bedded, uneven surface and fracture. 3. Limestone, bluish, nodular (concretionary), with red, ferruginous and whitish stains. Numerous small masses of Chatetes milleporaceous in upper part 2 4. Slope, soil and fragments of yellow, greenish and purple argillaceus shale 20 5. Limestone, dull blue, hard, compact.. 1 6 6. Slate, bituminous or black.. 3 Total thickness.. 48 0 The base of the Middle Coal Measures is placed near the bottom of this section. Beyond this to the west, Lower Coal Measure rocks are exposed which have been described in the preceding pages, the Middle Coal Measure strata occurring near the hilltops. About a mile east of Edwards station the following section was meas. ured: SECTION XVII. OUTCROP IN RIVER BLUFF, ONE MILE EAST OF EDWARDS STATION. 13 1 Interval to base of Middle Coal Measures about 45 feet. Beyond this again, the Middle Coal Measure strata are confined to the uplands, and only limited exposures of rocks immediately associated with the coal beds were observed. These will be described later under the section devoted to economic geology. At the mouth of Tabo creek, in the railway cut through the bluffs on the east side, is a small exposure of the basal members of the Middle Coal Measures, illustrated in Detail Section No. 1 of the section sheet; this is bounded on the east by the Warrensburg sandstone. The following section was measured at this point: In his manuscript notes, Mr. Harrison gives the following section from the same locality: SECTION XIX. SECTION BETWEEN BERLIN AND THE MOUTH OF THE TABO IN SEC. 3. Feet. Inches. 1. Limestone, hard, bluish gray, compact. Apparently not in place, slidden down.. About 100 yards below (east of) this, he describes the following section: SECTION XX. SECTION AT BERLIN, BELOW TABO CREEK. From Edwin Harrison. Feet. Inches. 1. Sandstone, brownish yellow, yellow and greenish, soft, micaceous, very much washed, uneven bedded; some of the layers heavy bedded, others shaly; containing thin beds of arenaceous shale; concretions of hematite ore. Vegetable remains numerous in some of the beds.. 2. Conglomerate, hard, silico-calcareous. 45 3 6. Shale, bluish black, calcareous, containing Myalina and Productus 6 Total thickness 74 6 Mr. Harrison does not correlate these two sections, but, in statements elsewhere in his notes, he refers to the sandstone (No. 1, Sec. XX) as the "Micaceous sandstone," which he con. siders the upper member of the Lower Coal Measure group, and we infer that the members of Section XIX are placed by him geologically above those of No. XX. In the report of the Geological Survey for 1872, G. C. Broadhead quotes the following section from C. J. Norwood, which is in confirmation of this inference: Feet. Inches. SECTION XXI. SECTION AT BERLIN, MADE BY C. J. NORWOOD. 1. Slope, 100 feet at 30'. From G. C. Broadhead. 2. Limestone, in one bed; ashy blue, argillo-pyritiferous; on the top a thin shelly layer contains fossils, viz.: Bellerophon (2 sp.) large and small, Chonetes, Crinoid stems, Bellerophon Montfortiana, small uniralres, etc. Equivalent to No. 32 of the Lexington section (about 30 feet below the Lexington coal bed, A. W.). 3. Shales, bituminous...... 1 2 2 |