Academic literature on the topic 'Paleopedology – Oligocene'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Contents
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Paleopedology – Oligocene.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Paleopedology – Oligocene"
Terry, Jr, Dennis O. "Paleopedology of the Chadron Formation of Northwestern Nebraska: implications for paleoclimatic change in the North American midcontinent across the Eocene–Oligocene boundary." Palaeogeography, Palaeoclimatology, Palaeoecology 168, no. 1-2 (April 2001): 1–38. http://dx.doi.org/10.1016/s0031-0182(00)00248-0.
Full textDissertations / Theses on the topic "Paleopedology – Oligocene"
Lukens, William E. "PALEOPEDOLOGY AND PALEOGEOMORPHOLOGY OF THE EARLY OLIGOCENE ORELLA AND WHITNEY MEMBERS, BRULE FORMATION, WHITE RIVER GROUP, TOADSTOOL GEOLOGIC PARK, NEBRASKA." Master's thesis, Temple University Libraries, 2013. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/231796.
Full textM.S.
Understanding local and regional reactions to the global Eocene-Oligocene climate transition is a continuing challenge. The White River Group in the North American midcontinent preserves dynamic fluvial, volcaniclastic and lacustrine facies that yield to aeolianites. To test whether this shift in sedimentation style was driven by climate change, 20 paleosols from 8 profiles were analyzed from the fluvial-aeolian Orella Member through the aeolian-dominated Whitney Member of the earliest Oligocene Brule Formation at Toadstool Geologic Park, NE. Paleosol morphology and geochemistry were used to assess the balance of aeolian vs. alluvial sedimentation at key stratigraphic intervals and lithologic transitions. Significant loess deposition began at least as early as the lower Orella Member but is masked in most settings by concomitant fluvial deposition. As fluvial influence on landscapes waned across the Orella-Whitney Member boundary, loess deposits predominated and became more recognizable. Paleosols follow different pedogenic pathways in direct response to depositional setting. Whereas all paleosols formed through top-down pedogenesis in alluvial settings, paleosols in aeolian-dominated settings formed though pedogenic upbuilding during aggradational phases and through top-down pedogenesis during depositional hiatuses. The disparity between each style of pedogenic development creates fundamentally different pedogenic associations that must first be understood before climatic interpretations can be drawn from macroscopic paleosol morphology alone. Microscopic analysis of loessic and alluvial paleosols indicates that pedogenic features do not greatly change across the Orella-Whitney Member boundary. Furthermore, results of climofunction calculations from five paleosol Bw and Btk horizons show mean annual temperature (ca. 9.0-10.5 °C) and precipitation (ca. 650-800 mm/y) do not significantly vary across the Orella-Whitney Member transition. Clay mineralogy and the presence of pedogenic carbonate and translocated clay corroborate paleoclimate estimates. However, geochemical paleosol profiles are uniform and do not reflect observed vertical associations of pedogenic features. Constant additions of aeolian sediment, which replenishes base losses through leaching, explain this phenomenon. Interpretations of paleovegetation from root trace morphology and paleosol taxonomy indicate that predominantly open canopy to savanna habitats were in place in the lower Orella Member and continued into the Whitney Member. Evidence for riparian partitioning exists in the lower Orella Member but disappears as fluvial deposits wane in the Whitney Member. Lacking evidence of climate change from paleosol analysis, changes in sedimentation style and vegetative biomes are most likely a reaction to increased aeolian deposition.
Temple University--Theses
Mullin, Michelle R. D. "Stable isotope record of soil carbonates from the Eocene-Oligocene transition, Badlands National Park, South Dakota, USA." 2010. http://liblink.bsu.edu/uhtbin/catkey/1632468.
Full textGeologic history of the Eocene-Oligocene -- Climate records -- Causes of climate change -- Climate change across the Eocene-Oligocene -- Current findings -- Discussion.
Department of Geology
Books on the topic "Paleopedology – Oligocene"
1957-, Bestland Erick A., and Fremd Theodore J. 1952-, eds. Eocene and Oligocene paleosols of central Oregon. Boulder, Colo: Geological Society of America, 1999.
Find full text(Editor), Gregory J. Retallack, Erick A. Bestland (Editor), and Theodore J. Fremd (Editor), eds. Eocene and Oligocene Paleosols of Central Oregon (Special Papers (Geological Society of America), 344.). Geological Society of America, 1999.
Find full text