. Bulletin - New York State Museum. Science. GEOLOGY AND PALEONTOLOGY OF THE SCHOHARIE VALLEY 343 were due to deposition on a shelving shore the thin edge should be made of the upper beds of the stratum only [fig. 223]. When elevation of the peneplain takes place streams naturally become adjusted on the softer strata and so carve out again the cuesta topography by working along the softer beds. This revived topography is not readily distinguishable at first sight from the original cuesta topography. The revived cuestas how-. Fig-. 222 Thinnino- away of strata by overlap on x-(a, b) and through
. Bulletin - New York State Museum. Science. GEOLOGY AND PALEONTOLOGY OF THE SCHOHARIE VALLEY 343 were due to deposition on a shelving shore the thin edge should be made of the upper beds of the stratum only [fig. 223]. When elevation of the peneplain takes place streams naturally become adjusted on the softer strata and so carve out again the cuesta topography by working along the softer beds. This revived topography is not readily distinguishable at first sight from the original cuesta topography. The revived cuestas how-. Fig-. 222 Thinnino- away of strata by overlap on x-(a, b) and through erosion (peneplena- tion - c-/). In the latter case the lower portion of each bed extends beyond the upper ever are much further removed from the old land than were their predecessors. That this has been the history of the Helderberg and Schoharie regions seems to be indicated by the correspondence of all the features of the region with those outlined in the theoretic dis- cussion of cuesta development on a coastal plain of the type formed by these old Paleozoic strata. The first cuesta formed. 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 New York State Museum; New York State Museum. Albany : New York State Education Dept
Size: 4508px × 554px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
