Tom Ager (Former Employee)
Science and Products
Filter Total Items: 19
Environments of northwestern North America before the last glacial maximum Environments of northwestern North America before the last glacial maximum
No abstract available.
Authors
John J. Clague, Rolf Mathewes, Thomas A. Ager
Palynology of Eocene strata in the Sagavanirktok and Canning Formations on the North Slope of Alaska Palynology of Eocene strata in the Sagavanirktok and Canning Formations on the North Slope of Alaska
This paper describes, illustrates, and interprets Eocene palynomorph assemblages from the North Slope of Alaska, mainly from 31 outcrop samples from seven stratigraphic sections at Franklin Bluffs on the Sagavanirktok River. The top of the Sagwon Member of the Sagavanirktok Formation is shown to be a thin, coaly, apparently nonmarine sequence almost certainly of early Eocene age; the...
Authors
Norman O. Frederiksen, Lucy E. Edwards, Thomas A. Ager, Thomas P. Sheehan
Paleoenvironmental atlas of Beringia presented in electronic form 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 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...
Authors
J. M. White, Thomas A. Ager, David P. Adam, E. B. Leopold, G. Liu, H. Jette, C. E. Schweger
Information on selected climate and climate-change issues Information on selected climate and climate-change issues
No abstract available.
Authors
Harry F. Lins, E.T. Sundquist, Thomas Alan Ager
Geology and origin of the Death Valley uranium deposit, Seward Peninsula, Alaska 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...
Authors
Kendell A. Dickinson, Kenneth D. Cunningham, Thomas A. Ager
Holocene pollen and sediment record from the tangle lakes area, central Alaska 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...
Authors
Thomas A. Ager, John D. Sims
Science and Products
Filter Total Items: 19
Environments of northwestern North America before the last glacial maximum Environments of northwestern North America before the last glacial maximum
No abstract available.
Authors
John J. Clague, Rolf Mathewes, Thomas A. Ager
Palynology of Eocene strata in the Sagavanirktok and Canning Formations on the North Slope of Alaska Palynology of Eocene strata in the Sagavanirktok and Canning Formations on the North Slope of Alaska
This paper describes, illustrates, and interprets Eocene palynomorph assemblages from the North Slope of Alaska, mainly from 31 outcrop samples from seven stratigraphic sections at Franklin Bluffs on the Sagavanirktok River. The top of the Sagwon Member of the Sagavanirktok Formation is shown to be a thin, coaly, apparently nonmarine sequence almost certainly of early Eocene age; the...
Authors
Norman O. Frederiksen, Lucy E. Edwards, Thomas A. Ager, Thomas P. Sheehan
Paleoenvironmental atlas of Beringia presented in electronic form 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 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...
Authors
J. M. White, Thomas A. Ager, David P. Adam, E. B. Leopold, G. Liu, H. Jette, C. E. Schweger
Information on selected climate and climate-change issues Information on selected climate and climate-change issues
No abstract available.
Authors
Harry F. Lins, E.T. Sundquist, Thomas Alan Ager
Geology and origin of the Death Valley uranium deposit, Seward Peninsula, Alaska 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...
Authors
Kendell A. Dickinson, Kenneth D. Cunningham, Thomas A. Ager
Holocene pollen and sediment record from the tangle lakes area, central Alaska 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...
Authors
Thomas A. Ager, John D. Sims