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Drone aerial gravel pit mining sorting glacial river gravel Ohio Stock Photo

RF2AR6RGP–Drone aerial gravel pit mining sorting glacial river gravel Ohio

. Glacial formations and drainage features of the Erie and Ohio basins. iguration of the old channel, as shown in fig. 6, will add to the force ofthese considerations. An objection to the northwestward outlet may perhaps seem to bepresented by deposits of gravel which occur along the Allegheny Valleybetween the niouth of French Creek and the mouth of the Clarion. Inseveral places, notabl) at the bends of the river at Brandon, at a point 2miles below Brandon, at Kennerdell, at Blacks (Winter Hill station), andat Emlenton, there are deposits on the face of the gorge extending fromnear the rivers Stock Photo

RM2AGE9TF–. Glacial formations and drainage features of the Erie and Ohio basins. iguration of the old channel, as shown in fig. 6, will add to the force ofthese considerations. An objection to the northwestward outlet may perhaps seem to bepresented by deposits of gravel which occur along the Allegheny Valleybetween the niouth of French Creek and the mouth of the Clarion. Inseveral places, notabl) at the bends of the river at Brandon, at a point 2miles below Brandon, at Kennerdell, at Blacks (Winter Hill station), andat Emlenton, there are deposits on the face of the gorge extending fromnear the rivers

RF2AR6RJF–Drone aerial gravel pit mining sorting glacial river gravel Ohio

. Glacial formations and drainage features of the Erie and Ohio basins. of 350 feet, and formingin its passage three falls of 66,100, and 96 feet, respectively. This channel is narrow,with mural banks; but a short distance below the lower falls it emerges into a broadervalley in a line with the channel to the south of Portage before it is deflected from itscourse. The space between these two points is a deep, broad gorge, filled to a greatheight with clay, sand, and gravel. This is evidently the ancient channel of the river,and 3et, after it had become filled with this drift, the stream found Stock Photo

RM2AGE8BJ–. Glacial formations and drainage features of the Erie and Ohio basins. of 350 feet, and formingin its passage three falls of 66,100, and 96 feet, respectively. This channel is narrow,with mural banks; but a short distance below the lower falls it emerges into a broadervalley in a line with the channel to the south of Portage before it is deflected from itscourse. The space between these two points is a deep, broad gorge, filled to a greatheight with clay, sand, and gravel. This is evidently the ancient channel of the river,and 3et, after it had become filled with this drift, the stream found

RF2AR6RJX–Drone aerial gravel pit mining sorting glacial river gravel Ohio

. Glacial formations and drainage features of the Erie and Ohio basins. dto the glacial drift. In this old channel the silt filling is bu+ little less thanin Teays Valley, the surface of the silt being 680 to 700 feet above tide, or50 to 70 feet above the rock floor. The gravel which underlies the silt is athin deposit resting upon the rock floor. The accompanying map (PLVII),which embraces a portion of the Ironton quadrangle, shows a part of thisold valley and the present Ohio, with a range of hills between them. Thehills occupy the interval between the mouths of White Oak Creek and PondRun. Stock Photo

RM2AGEB2D–. Glacial formations and drainage features of the Erie and Ohio basins. dto the glacial drift. In this old channel the silt filling is bu+ little less thanin Teays Valley, the surface of the silt being 680 to 700 feet above tide, or50 to 70 feet above the rock floor. The gravel which underlies the silt is athin deposit resting upon the rock floor. The accompanying map (PLVII),which embraces a portion of the Ironton quadrangle, shows a part of thisold valley and the present Ohio, with a range of hills between them. Thehills occupy the interval between the mouths of White Oak Creek and PondRun.

RF2AR6RJW–Drone aerial gravel pit mining sorting glacial river gravel Ohio

. Glacial formations and drainage features of the Erie and Ohio basins. heny, Pa., called Monument Hill, reaches a height ofnearly 200 feet above the river, and is separated from the north bluff by achannel less than one-half mile in widtli, in which there is a gravel fillingextending below the level of the present stream. Monument Hill appearsto be a remnant of an old gradation plain, and the river there has simplycut a double channel in its old bottom. Passing over McKees Rocks, which stand on the south side of thestream about 6 miles below Pittsburg, and seem once to have been con-nected wi Stock Photo

RM2AGECW8–. Glacial formations and drainage features of the Erie and Ohio basins. heny, Pa., called Monument Hill, reaches a height ofnearly 200 feet above the river, and is separated from the north bluff by achannel less than one-half mile in widtli, in which there is a gravel fillingextending below the level of the present stream. Monument Hill appearsto be a remnant of an old gradation plain, and the river there has simplycut a double channel in its old bottom. Passing over McKees Rocks, which stand on the south side of thestream about 6 miles below Pittsburg, and seem once to have been con-nected wi

RF2AR6RJ3–Drone aerial gravel pit mining sorting glacial river gravel Ohio

. Glacial formations and drainage features of the Erie and Ohio basins. d with early glacialgravel (see PI. VIII), one boring reached rock at 1,040 feet above tide,and another penetrated to a level only 1,015 feet above tide without reach-ing rock. The gravel at these points rises to a level much above that of theterraces connected with the outer moraine of the Wisconsin or late ice inva- FlG. 5.—Present drainage of part ot the Middle Alleghenydrainage system. See Carll: Second Geol. Survey Pennsylvania, Bept. !?, p. 334. OLD MIDDLE ALLEGHENY DRAINAGE SYSTEM. 135 siou, and sustains such relati Stock Photo

RM2AGEA78–. Glacial formations and drainage features of the Erie and Ohio basins. d with early glacialgravel (see PI. VIII), one boring reached rock at 1,040 feet above tide,and another penetrated to a level only 1,015 feet above tide without reach-ing rock. The gravel at these points rises to a level much above that of theterraces connected with the outer moraine of the Wisconsin or late ice inva- FlG. 5.—Present drainage of part ot the Middle Alleghenydrainage system. See Carll: Second Geol. Survey Pennsylvania, Bept. !?, p. 334. OLD MIDDLE ALLEGHENY DRAINAGE SYSTEM. 135 siou, and sustains such relati

RF2AR6RJJ–Drone aerial gravel pit mining sorting glacial river gravel Ohio

. Glacial formations and drainage features of the Erie and Ohio basins. A. SECTION OF PEAT AND TILL NEAR GERMANTOWN, OHIO.. B. SECTION SHOWING WOOD INCLUDED IN TILL, 1 MILE SOUTH OF OXFORD, OHIO. MAIN MORAINIC SYSTEM OF THE MIAMI LOBE. 365 Just west of this exposure is a partial one in which gravel extends fromthe creek bed up to a height of nearly 40 feet, a portion of the gravel beingcemented. Passing eastward, about an eighth of a mile to the place wherethe peat comes to view, there is a nearly solid bed of till 95 feet in heightwithout the alternations of yellow and blue color seen in the Stock Photo

RM2AGE4JJ–. Glacial formations and drainage features of the Erie and Ohio basins. A. SECTION OF PEAT AND TILL NEAR GERMANTOWN, OHIO.. B. SECTION SHOWING WOOD INCLUDED IN TILL, 1 MILE SOUTH OF OXFORD, OHIO. MAIN MORAINIC SYSTEM OF THE MIAMI LOBE. 365 Just west of this exposure is a partial one in which gravel extends fromthe creek bed up to a height of nearly 40 feet, a portion of the gravel beingcemented. Passing eastward, about an eighth of a mile to the place wherethe peat comes to view, there is a nearly solid bed of till 95 feet in heightwithout the alternations of yellow and blue color seen in the

RF2AR6RJM–Drone aerial gravel pit mining sorting glacial river gravel Ohio

. Bulletin. Ethnology. 80 BUREAU OF AMERICAN ETHNOLOGY [bull. 60 The Ohio Valley has furnished much material for controversy, and there is still apparent ground for difference of The Newcomers- opinion regarding the chronologic value of the finds. Among the more noteworthy specimens is a chipped object obtained from a gravel deposit of glacial or postglacial age at Newcomerstown, Ohio, by W. C. Mills, at a depth of about 15 feet/ Mr. Mills was at the time not an experienced observer of geological phenomena and probably had little idea that especial importance might ever attach to the specimen, Stock Photo

RMRGWXY7–. Bulletin. Ethnology. 80 BUREAU OF AMERICAN ETHNOLOGY [bull. 60 The Ohio Valley has furnished much material for controversy, and there is still apparent ground for difference of The Newcomers- opinion regarding the chronologic value of the finds. Among the more noteworthy specimens is a chipped object obtained from a gravel deposit of glacial or postglacial age at Newcomerstown, Ohio, by W. C. Mills, at a depth of about 15 feet/ Mr. Mills was at the time not an experienced observer of geological phenomena and probably had little idea that especial importance might ever attach to the specimen,

RF2AR6RJC–Drone aerial gravel pit mining sorting glacial river gravel Ohio

. Elements of geology : a text-book for colleges and for the general reader. Geology. GLACIAL EPOCH. 547 covered with a more regularly stratified material, consisting of sand and gravel, apparently subsequently deposited from water. This is particu- larly the case in the basin of the Mississippi, as e. g., in Ohio, Illinois, and Iowa. It is probable, however, that this be- longs to the next epoch, Cham- plain. Sometimes irregular Wi m o oO °o ° m 3-' o ° & mound-like deposits are left in FlG. 924.—Section on Rush Creek, near Mono Lake, the retreat of the ice. These California. are called J Stock Photo

RMRCJ289–. Elements of geology : a text-book for colleges and for the general reader. Geology. GLACIAL EPOCH. 547 covered with a more regularly stratified material, consisting of sand and gravel, apparently subsequently deposited from water. This is particu- larly the case in the basin of the Mississippi, as e. g., in Ohio, Illinois, and Iowa. It is probable, however, that this be- longs to the next epoch, Cham- plain. Sometimes irregular Wi m o oO °o ° m 3-' o ° & mound-like deposits are left in FlG. 924.—Section on Rush Creek, near Mono Lake, the retreat of the ice. These California. are called J