First calcareous fossils and the evolution of the limestones

Research Article| January 01, 1909 First calcareous fossils and the evolution of the limestones REGINALD A. DALY REGINALD A. DALY Search for other works by this author on: GSW Google Scholar GSA Bulletin (1909) 20 (1): 153–170. https://doi.org/10.1130/GSAB-20-153 Article history received: 08 Jan 1909 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation REGINALD A. DALY; First calcareous fossils and the evolution of the limestones. GSA Bulletin 1909;; 20 (1): 153–170. doi: https://doi.org/10.1130/GSAB-20-153 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract IntroductionIt may be assumed that the average water of the ocean has not been of the same composition in any two of the geological periods. The ocean has had a chemical evolution. Though the amount of water may have remained tolerably constant from the pre-Cambrian time to the present, it seems certain that the amount and character of the mineral matter dissolved in the ocean must always have been changing. The inflow of river-borne salts has varied in rate according to the area of the lands and according to the kinds of rocks exposed to subaerial erosion during the different periods. On the other hand, there are reasons for believing that the precipitation of salts from the sea-water (including biochemical precipitation) has occurred at variable rates. The composition of the existing average sea-water may conceivably be dependent on four other factors: a, the primitive condition of the ocean before . . . This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.