00000nam 2200000za 4500 9.861204 CaOODSP 20251031142448 cr ||||||||||| 180827s1983 oncd #ob f000 0 eng d CaOODSP eng n-cn--- M183-2/922E-PDF RASC Fortran IV computer program for ranking and scaling of biostratigraphic events [electronic resource] / by M. Heller ... [et al.]. Ottawa : Geological Survey of Canada, 1983. 54 p. : graphs + magentic tape material Open file ; 922 Title from cover. "This document was produced by scanning the original publication." Includes bibliographical references. "The RASC-method and program have been developed for use in biostratigraphy, the science that uses fossils to determine the geological age of rocks. Biostratigraphy is based on Darwinian evolution-principles: In time biological taxa appear, reach a peak of abundance, and disappear, to make place for other taxa"--General introduction, p. 2. gccst Stratigraphy gccst Software gccst Geology Heller, M. Canada. Natural Resources Canada. Geological Survey of Canada. Open file (Geological Survey of Canada) 922. (CaOODSP)9.506878 PDF 12.33 MB https://publications.gc.ca/collections/collection_2018/rncan-nrcan/m183-2/M183-2-922-eng.pdf Report PDF 77.25 MB https://publications.gc.ca/collections/collection_2018/rncan-nrcan/m183-2/M183-2-922-1-eng.pdf Magentic tape material HTML N/A https://doi.org/10.4095/129617 GEOSCAN DOI 129617