Sedimentary Measurement of Cretaceous Time

@article{GilbertSedimentaryMO,
  title={Sedimentary Measurement of Cretaceous Time},
  author={Grove Karl Gilbert},
  journal={The Journal of Geology},
  volume={3},
  pages={121 - 127}
}
  • G. K. Gilbert
  • Published 1 February 1895
  • Geology
  • The Journal of Geology
Along the base of the Rocky Mountains, and eastward for many miles, the basin of the Arkansas river is occupied by Cretaceous rocks. At bottom are the Dakota sandstones, several hundred feet in thickness; and above these a great body of shales, constituting the Benton, Niobrara and Pierre groups and having a total thickness of 3900 feet. In the main these shales are argillaceous; but at a few horizons they are calcareous, and at one level a sandstone appears, accompanied by a few feet of… 
Plio-Pleistocene cyclothems from Wanganui Basin, New Zealand: type locality for an astrochronologic time-scale, or template for recognizing ancient glacio-eustacy?
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