Tom Ager
Tom Ager is a Scientist Emeritus with the Geosciences and Environmental Change Science Center.
Science and Products
Filter Total Items: 17
Postglacial vegetation history of the Kachemak Bay area, Cook Inlet, south-central Alaska: A section in Geologic studies in Alaska by the U.S. Geological Survey, 1998
Pollen records from two sites on the north shore of Kachemak Bay, south-central Alaska, provide the first radiocarbon-dated histories of postglacial vegetation development for southern Cook Inlet. During the late Wisconsin glacial interval, glaciers covered most of Cook Inlet. Deglaciation of Kachemak Bay began prior to 13,000 yr B.P. Pollen evidence indicates that a pioneering herbaceous tundra b
Authors
Thomas A. Ager
Paleoenvironmental atlas of Beringia presented in electronic form
No abstract available.
Authors
Mathieu L. Duvall, Thomas A. Ager, Patricia M. Anderson, Patrick J. Bartlein, Nancy H. Bigelow, Julie Brigham-Grette, Linda B. Brubaker, Les C. Cwynar, Mary E. Edwards, Wendy R. Eisner, Scott A. Elias, Bruce P. Finney, Olga Yu. Glushkova, Feng Sheng Hu, Darrell S. Kaufman, Anatoly V. Lozhkin, Cary J. Mock, Michael A. Trumpe, Robert S. Webb
Neogene and Quaternary quantitative palynostratigraphy and paleoclimatology from sections in Yukon and adjacent Northwest Territories and Alaska
quantitative pollen and spore zonation for the Neogene and Quaternary of Yukon, western Northwest Territories and central and northern Alaska has been assembled from seven sections and one borehole. The palynological spectra from 163 samples from these sections were grouped and averaged within the groups to produce twenty-one composite spectra that depict the long-term pattern of vegetation chang
Authors
J. M. White, Thomas A. Ager, David P. Adam, E. B. Leopold, G. Liu, H. Jetté, C. E. Schweger
Geology and origin of the Death Valley uranium deposit, Seward Peninsula, Alaska
A uranium deposit discovered in 1977 in western Alaska, by means of airborne radiometric data, is the largest known in Alaska on the basis of industry reserve estimates. At about latitude 65 degrees N, it is the most northerly known sandstone-type uranium deposit in the world. The deposit lies in Eocene continental sandstone near the eastern end of the Seward Peninsula, in the southern end of a gr
Authors
Kendell A. Dickinson, Kenneth D. Cunningham, Thomas A. Ager
Holocene pollen and sediment record from the tangle lakes area, central Alaska
Pollen and sediments have been analyzed from a 5.5 meter‐length core of lacustrine sediments from Tangle Lakes, in the Gulkana Upland south of the Alaska Range (63 ° 01 ‘ 46”; N. latitude, 146° 03 ‘ 48 “ W. longitude). Radiocarbon ages indicate that the core spans the last 4700 years. The core sediments are sandy silt and silty clay; the core shows distinct rhythmic laminations in the lower 398 cm
Authors
Thomas A. Ager, John D. Sims
Science and Products
Filter Total Items: 17
Postglacial vegetation history of the Kachemak Bay area, Cook Inlet, south-central Alaska: A section in Geologic studies in Alaska by the U.S. Geological Survey, 1998
Pollen records from two sites on the north shore of Kachemak Bay, south-central Alaska, provide the first radiocarbon-dated histories of postglacial vegetation development for southern Cook Inlet. During the late Wisconsin glacial interval, glaciers covered most of Cook Inlet. Deglaciation of Kachemak Bay began prior to 13,000 yr B.P. Pollen evidence indicates that a pioneering herbaceous tundra b
Authors
Thomas A. Ager
Paleoenvironmental atlas of Beringia presented in electronic form
No abstract available.
Authors
Mathieu L. Duvall, Thomas A. Ager, Patricia M. Anderson, Patrick J. Bartlein, Nancy H. Bigelow, Julie Brigham-Grette, Linda B. Brubaker, Les C. Cwynar, Mary E. Edwards, Wendy R. Eisner, Scott A. Elias, Bruce P. Finney, Olga Yu. Glushkova, Feng Sheng Hu, Darrell S. Kaufman, Anatoly V. Lozhkin, Cary J. Mock, Michael A. Trumpe, Robert S. Webb
Neogene and Quaternary quantitative palynostratigraphy and paleoclimatology from sections in Yukon and adjacent Northwest Territories and Alaska
quantitative pollen and spore zonation for the Neogene and Quaternary of Yukon, western Northwest Territories and central and northern Alaska has been assembled from seven sections and one borehole. The palynological spectra from 163 samples from these sections were grouped and averaged within the groups to produce twenty-one composite spectra that depict the long-term pattern of vegetation chang
Authors
J. M. White, Thomas A. Ager, David P. Adam, E. B. Leopold, G. Liu, H. Jetté, C. E. Schweger
Geology and origin of the Death Valley uranium deposit, Seward Peninsula, Alaska
A uranium deposit discovered in 1977 in western Alaska, by means of airborne radiometric data, is the largest known in Alaska on the basis of industry reserve estimates. At about latitude 65 degrees N, it is the most northerly known sandstone-type uranium deposit in the world. The deposit lies in Eocene continental sandstone near the eastern end of the Seward Peninsula, in the southern end of a gr
Authors
Kendell A. Dickinson, Kenneth D. Cunningham, Thomas A. Ager
Holocene pollen and sediment record from the tangle lakes area, central Alaska
Pollen and sediments have been analyzed from a 5.5 meter‐length core of lacustrine sediments from Tangle Lakes, in the Gulkana Upland south of the Alaska Range (63 ° 01 ‘ 46”; N. latitude, 146° 03 ‘ 48 “ W. longitude). Radiocarbon ages indicate that the core spans the last 4700 years. The core sediments are sandy silt and silty clay; the core shows distinct rhythmic laminations in the lower 398 cm
Authors
Thomas A. Ager, John D. Sims