Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Aaron F. Diefendorf"'
Autor:
Greg A. Ludvigson, Aaron F. Diefendorf, Marina B. Suarez, Luis A. González, Megan C. Corcoran, Kristen Schlanser, Peter P. Flaig, Paul J. McCarthy, Dolores van der Kolk, David Houseknecht, Margaret Sanders
Publikováno v:
Geosciences, Vol 12, Iss 4, p 143 (2022)
We report estimated stable isotope compositions of depositional waters and paleoprecipitation from the Cretaceous Arctic to further elucidate the role of the global hydrologic cycle in sustaining polar warmth during that period. Estimates are based o
Externí odkaz:
https://doaj.org/article/f7b3cffbb4724ae580c89817729e35a7
Autor:
ALEXANDER J. LOWE, AARON F. DIEFENDORF, KRISTEN M. SCHLANSER, JAMES SUPER, CHRISTOPHER K. WEST, DAVID R. GREENWOOD
Publikováno v:
PALAIOS. 37:185-200
The early Eocene Okanagan Highland fossil sites of Washington (USA) and British Columbia (Canada) contain exquisitely preserved plant and insect fossils that showcase a critical time and place in the evolution of the Northern Hemisphere temperate dec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4692fb42ce91d8798daa0c7897173a05
https://doi.org/10.2110/palo.2021.007
https://doi.org/10.2110/palo.2021.007
Autor:
Meghan Spoth, Brenda Hall, Thomas Lowell, Aaron F. Diefendorf, Megan C. Corcoran, Paul Brickle
Publikováno v:
Quaternary Science Reviews. 311:108135
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c08641e37d8b0bd599db99ac6b2fcb5
https://doi.org/10.1016/j.quascirev.2023.108135
https://doi.org/10.1016/j.quascirev.2023.108135
Autor:
Erika J. Freimuth, Benjamin R. Bates, Joshua D. Landis, Aaron F. Diefendorf, Anna K. Schartman, Thomas V. Lowell, Alexander K. Stewart
Publikováno v:
Geochimica et Cosmochimica Acta. 300:119-136
Lacustrine sediments have the potential to preserve paleoenvironmental proxies such as terrestrial plant waxes at high temporal resolution. The temporal fidelity of plant wax records, however, can be up to several thousand years older than the corres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e7bb540cbd7cbfe42e18ffe2576b7f0
https://doi.org/10.1016/j.gca.2021.02.022
https://doi.org/10.1016/j.gca.2021.02.022
Autor:
Kristen M. Schlanser, Alexander J. Lowe, Jie Geng, James F. Basinger, Kevin E. Mueller, Henry C. Fricke, David R. Greenwood, Ellen D. Currano, Aaron F. Diefendorf, Christopher K. West, Herbert W. Meyer, Andrew Flynn, Daniel J. Peppe
Publikováno v:
Geochimica et Cosmochimica Acta. 270:264-281
Leaf carbon isotope fractionation (Δleaf) is sensitive to environmental conditions and can provide insights into the state and evolution of leaf gas-exchange in response to climate and environment factors. In modern plants, water availability is the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6261ea3cd1f65bd6ce2ebaf06da3829c
https://doi.org/10.1016/j.gca.2019.11.023
https://doi.org/10.1016/j.gca.2019.11.023
Autor:
Anna Schartman, Alexander K. Stewart, Thomas V. Lowell, Joshua D. Landis, Broxton W. Bird, Benjamin R. Bates, Erika J. Freimuth, Aaron F. Diefendorf
Publikováno v:
Geochimica et Cosmochimica Acta. 268:22-41
The hydrogen isotope values of plant waxes (δ2Hwax) primarily reflect plant source water. δ2Hwax preserved in lake sediments has therefore been widely used to investigate past hydroclimate. The processes by which plant waxes are integrated at regio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4b8b058d1ecfdf425d609d622ff8e3f
https://doi.org/10.1016/j.gca.2019.08.026
https://doi.org/10.1016/j.gca.2019.08.026
Publikováno v:
Geochimica et Cosmochimica Acta. 257:131-149
Understanding the fate of terrestrial plant waxes from source to sink is critical for improving paleoclimate interpretations from sedimentary plant waxes. However, there is limited knowledge about the controls on plant wax integration and transport i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::274879be5e8b5290c74bddc791605c59
https://doi.org/10.1016/j.gca.2019.04.022
https://doi.org/10.1016/j.gca.2019.04.022
Autor:
Peter Regier, Thomas V. Lowell, Aaron F. Diefendorf, Julia L. Wise, David J. Van Horn, Clifford N. Dahm
Publikováno v:
Journal of Arid Environments. 165:55-63
The temporal and spatial dynamics of dissolved organic carbon (DOC) during storm events are well characterized in mesic urban regions, but equivalent studies in arid regions are less frequent, and our understanding of the impacts of arid-land urban s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74357ec09ff7c83d1a85f930d164c12b
https://doi.org/10.1016/j.jaridenv.2019.03.003
https://doi.org/10.1016/j.jaridenv.2019.03.003
Publikováno v:
Organic Geochemistry. 128:94-107
Sedimentary plant waxes and their hydrogen and carbon (δ2H and δ13C) isotopes are important proxies for past hydrologic and vegetation change. However sedimentary waxes accumulate from diverse sources, integrating uncertainties from: (i) variable i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecbc4702eae282e7eb8cac3ca6b1de0b
https://doi.org/10.1016/j.orggeochem.2019.01.006
https://doi.org/10.1016/j.orggeochem.2019.01.006
Autor:
Vladimir Levchenko, Michael I. Bird, Peter V. Ridd, Michael Brand, James Whinney, Jordahna L. Haig, Christopher M. Wurster, Lindsay B. Hutley, Cassandra Rowe, Aaron F. Diefendorf, Costijn Zwart
Publikováno v:
Quaternary Science Reviews. 203:233-247
This study reports palynological and geochemical results for modern and ancient sediments from 19 lakes on a rainfall gradient (784-1880 mm), across a range of savannas in Northern Australia. All proxies varied significantly across the range of sites
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d33964bd38745c1bde379ebf213395a
https://doi.org/10.1016/j.quascirev.2018.11.002
https://doi.org/10.1016/j.quascirev.2018.11.002