. Elements of geology : a text-book for colleges and for the general reader. Geology. 268 STRUCTURE COMMON TO ALL ROCKS. stratum, such as sandstone or grit, or by a lava-flow. In the latter case, the horizontal lava-blanket gives rise to tables, whatever be the position of the underlying strata. Good examples of this form are found in Illinois (Fig. 233), in Tennessee (Fig. 234), in the mesas of the Plateau region (Fig. 10, p. 17), and in Table Mountain, of California (Fig. 235).. Fig. 235.—Section across Table Mountain, Tuolumne County, California: L, lava; G, gravel; 8 8, slate; E, old river
. Elements of geology : a text-book for colleges and for the general reader. Geology. 268 STRUCTURE COMMON TO ALL ROCKS. stratum, such as sandstone or grit, or by a lava-flow. In the latter case, the horizontal lava-blanket gives rise to tables, whatever be the position of the underlying strata. Good examples of this form are found in Illinois (Fig. 233), in Tennessee (Fig. 234), in the mesas of the Plateau region (Fig. 10, p. 17), and in Table Mountain, of California (Fig. 235).. Fig. 235.—Section across Table Mountain, Tuolumne County, California: L, lava; G, gravel; 8 8, slate; E, old river-bed; B', present river-bed. {b.) But if the horizontal strata are soft, interstratified sands and clays, their erosion gives rise to fantastic castellated forms of peaks, turrets, etc., such as are found in the Bad Lands of the Plains and Plateau region, which are the almost unlithified deposits of the Terti- ary lakes (Fig. 236).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original LeConte, Joseph, 1823-1901. New York : D. Appleton and Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1892
