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- W2141779153 abstract "Research Article| September 01, 2011 Ecosystem response to soil biogeochemical behavior during the Late Cretaceous and early Paleocene within the western interior of North America Lee C. Nordt; Lee C. Nordt † Department of Geology, Baylor University, Waco, Texas 76798, USA †E-mail: Lee_Nordt@baylor.edu Search for other works by this author on: GSW Google Scholar Stephen I. Dworkin; Stephen I. Dworkin Department of Geology, Baylor University, Waco, Texas 76798, USA Search for other works by this author on: GSW Google Scholar Stacy C. Atchley Stacy C. Atchley Department of Geology, Baylor University, Waco, Texas 76798, USA Search for other works by this author on: GSW Google Scholar GSA Bulletin (2011) 123 (9-10): 1745–1762. https://doi.org/10.1130/B30365.1 Article history received: 05 Jul 2010 rev-recd: 13 Dec 2010 accepted: 19 Dec 2010 first online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Lee C. Nordt, Stephen I. Dworkin, Stacy C. Atchley; Ecosystem response to soil biogeochemical behavior during the Late Cretaceous and early Paleocene within the western interior of North America. GSA Bulletin 2011;; 123 (9-10): 1745–1762. doi: https://doi.org/10.1130/B30365.1 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 Paleosol properties are routinely characterized by whole-rock geochemistry, compromising the interpretation of important biogeochemical information in deep time. As a consequence, we employ a new pedotransfer function approach to the characterization of paleosols and apply this methodology to Late Cretaceous (Campanian and Maastrichtian) and early Paleocene (Danian) landscapes from the Dawson Creek study area of the western interior to: (1) reconstruct collodially based physical and chemical soil properties, and (2) assess climate and soil biogeochemical controls on evolving terrestrial ecosystems. Nine paleoseries (i.e., pedotypes) characterize the range of soil properties within the fluvial stratigraphic succession, which includes Entisols, Inceptisols, and Vertisols. All soils had optimal water-holding potential as inferred from low bulk densities, whereas poorly drained and colonizing landscapes likely suffered from poor aeration during seasonal water logging. Even with high water-holding capacity, Maastrichtian soils experienced seasonal moisture stress because of lower rainfall than Campanian and Danian soils. Fertility levels were sufficient for the growth of most plants judging from high cation exchange capacity and base saturation, negligible aluminum toxicities because of nonacid pH, and limited salinity and sodicity from relatively low exchangeable sodium and soluble salts in solution. Unlike warm-temperate and forested paleosols with neutral pH from the Campanian and Danian, subtropical and alkaline paleosols from the Maastrichtian apparently supported a woodland plant formation adapted to low availability of iron and manganese, which were fixed with calcium in carbonate, and low availability of phosphorous because it formed insoluble compounds with iron and manganese. Carbon, nitrogen, phosphorous, and sulfur cycling through microbially mediated mineralization of soil organic matter was limited from low litter inputs in both early and midsuccessional ecosystems, particularly in woodland soils. Results do not reveal demonstrable changes in soil characteristics through the K-T transition. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2141779153 title "Ecosystem response to soil biogeochemical behavior during the Late Cretaceous and early Paleocene within the western interior of North America" @default.
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