. Annals of the New York Academy of Sciences. Science. MOOK, STUDY OF THE MORRISON FORMATION 53 36 feet in total thickness, which is mostly clay, but may contain thin beds of limestone or concretions where it is covered by a thin clay tains. Be- low this clay series is a heavy-bedded sandstone about 8 feet thick. This sandstone is underlain by a series of clays interbedded with thin layers of limestone and nodules. This series may be taken as the base of the Morrison formation in this region. It is underlain by the reddish arkosic sandstones of the underlying formation. Another important quarr
. Annals of the New York Academy of Sciences. Science. MOOK, STUDY OF THE MORRISON FORMATION 53 36 feet in total thickness, which is mostly clay, but may contain thin beds of limestone or concretions where it is covered by a thin clay tains. Be- low this clay series is a heavy-bedded sandstone about 8 feet thick. This sandstone is underlain by a series of clays interbedded with thin layers of limestone and nodules. This series may be taken as the base of the Morrison formation in this region. It is underlain by the reddish arkosic sandstones of the underlying formation. Another important quarry in this region is that operated for Professor E. T). Cope in 1877. This quarry is situated about GOO yards northwest. Fig. 12.—The "Nipple/' west of Garden Park. Colorado, looking east. of the Marsh-Hatcher quarry. It is situated at the top of the hill, and the beds exposed in it are the brown and white the uppermost beds of the Morrison formation in this district: They are overlain by the coarse white sandstone of the Lakota or Purgatoire formation. The con- tact between the two formations is very sharp. Another quarry operated for Professor Cope is situated about 500 yards east of the above-mentioned Cope quarry. It is situated at the base of a small conical hill, locally known as the "; It is at the top of the cliff which forms the Avestern boundary of Garden Park. The productive. 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 Academy of Sciences. New York, New York Academy of Sciences
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1877
