John IsbellJohn Isbell

Professor

328 Lapham Hall
(414) 229-2877
jisbell@uwm.edu
Vita (pdf-232kb)

Degrees:
Ph.D., The Ohio State University
M.S., Northern Illinois University
B.A., Augustana College

Post Doc:
Byrd Polar Research Center, The Ohio State University

Key Areas of Interest: Clastic Sedimentology and Stratigraphy, Sequence Stratigraphy, Historical Geology, Glacial and fluvial deposits and processes, The Late Paleozoic Ice Age, Gondwana Geology, Geology of the Southern Hemisphere (Antarctica, Argentina, South Africa, Australia), Landscape evolution during the Cretaceous and Tertiary

Teaching Areas: Sedimentology and Stratigraphy, Physical Sedimentology, Historical Geology, Petrology of Clastic Sedimentary Rocks, Conducted Field Trips in Sedimentary Geology,Sequence Stratigraphy

Research Interests: Dr. Isbell is a clastic sedimentologist and sequence stratigrapher who works with glacial, glaciomarine, fluvial, deltaic, shallow marine and glacially influenced deep marine sediment and sedimentary rocks deposited in foreland, rift, piggyback, and cratonic basins. He currently works on rock exposures in Antarctica, Argentina, Aus- tralia, South Africa, the Falkland Islands, the Russian Far East (Siberia), the western United States, the Appalachian Mountains, and in Wisconsin. His work focuses on understanding environmental changes that occurred during critical intervals in Earth History. These include (1) the late Paleozoic Ice Age (LPIA), (2) the ensuing Permian- Triassic greenhouse (359 to 199 million years ago) and (3) the transition from the Cretaceous to the Tertiary prior to and following the end-Cretaceous extinction event (145 to 55 million years ago).

Other Activities:

  • Associate Editor of PALAIOS
  • Delegate:The Gondwana Subcommission.
  • Chief Scientist, 03-04 Beardmore Remote Research Camp, Antarctica
  • Participant and Field Leader of 14 Research expeditions to Antarctica

Selected Publications:

Dineen, Ashley, Fraiser, Margaret L., and Isbell, John L. “Palaeoecology and Sedimentology of Carboniferous Glacial and Postglacial Successions in the Paganzo and Rio Blanco Basins of Northwestern Argentina.” Geological Society (London) for a Special Publication. 376. (2014) .
Bomfleur, Nenjamin, Klymiuk, Ashley A., Taylor, Edith L., Taylor, Thomas N., Gulbranson, Erik L., and Isbell, John L. “Diverse bryophyte mesofossils from the Triassic of Antarctica.” Lethia 47. (2014): 120-130.
Chen, Zhong-Qi. “Deep time climatic and environmental extremes and ecosystem response: An introduction.” Gondwana Research, Elsevier 25. Ed. Joachimski, Michael, Montañez, Isabel, and Isbell, John L. (2014): 1289-1293.
Gulbranson, Erik L., Isbell, John L., Montanez, Isabel P., Limarino, Carlos O., Marenssi, Sergio A., Meyer, Kyle, and Hull, Clara. “Reassessment of mid-Carboniferous glacial extent in southwestern Gondwana (Rio Blanco Basin.” Gondwana Research, Elseiver 25. (2014): 1369-1379.
Limarino, Carlos O., Cesari, Silvia N., Spalletti, Luis A., Taboada, Arturo C., Isbell, John L., Geuna, S., and Gulbranson, Erik L. “A paleoclimatic review of southern South America during the late Paleozoic: a record from icehouse to extreme greenhouse conditions.” Gondwana Research, Elsevier 25. (2014): 1396-1421.
Henry, Lindsey C., Isbell, John L., and Limarino, Carlos O. “The late Paleozoic El Imperial Formation, western Argentina: glacial to post-glacial transition and stratigraphic correlation with arc-related basins.” Gondwana Research, Elsever 25. (2014): 1380-1395.
Dineen, Ashley, Fraiser, Margaret L., and Isbell, John L. “Palaeoecology and Sedimentology of Carboniferous Glacial and Postglacial Successions in the Paganzo and Rio Blanco Basins of Northwestern Argentina.” Geological Society (London) for a Special Publication., Geological Society Special Publications 376. (2013): 109-140.
Henry, Lindsey, Isbell, John L., Fielding, Chris, Domack, Eugene, Frank, Tracy, and Fraiser, Margaret L. “Proglacial deposition and deformation in the Upper Carboniferous to Lower Permian Wynyard Formation, Tasmania: a process analysis.” Palaeogeography, Palaeoclimatology, Palaeoecology (2012) .
Isbell, John L., Henry, Lindsey, Gulbranson, Erik, Limarino, Carlos O., Fraiser, Margaret L., Koch, Zelenda, Ciccioli, Patricia, and Dineen, Ashley. “Glacial paradoxes during the late Paleozoic Ice Age: Evaluating the using the concept of the equilibrium line altitude (ELA) as a control on glaciation.” Gondwana Research (2012) .
Limarino, O. C., Isbell, John L., Ciccioli, P. L., and Taboada, A. C. “La secuencia Neopaleozoica de la quebrada De Agua De Jagüel (Precordillera de Mendoza): edad Y redefinición estratigráfica.” Revista de la Asociación Geológica Argentina 69. (2012): 596-608.
Isbell, John L., Henry, Lindsey, Reid, Catherine, and Fraiser, Margaret L. “Sedimentology and palaeoecology of lonestone-bearing mixed clastic rocks and cold-water carbonates of the Lower Permian Basal Beds at Fossil Cliffs, Maria Island, Tasmania (Australia): Insight into the initial decline of the late Palaeozoic ice age.” Geological Society (London) for a Special Publication. (2012) .
Gulbranson, Erik L., Isbell, John L., Taylor, Edith L., Taylor, Thomas N., Ryberg, Patricia, and Flaig, Peter P. “Permian polar forests: deciduousness and environmental variation.” Geobiology 10. (2012): 479-495.
Isbell, John L., Henry, Lindsey C., Gulbranson, Eric L., Limarino, Carlos O., Fraiser, Margaret L., Koch, Zelenda J., Ciccioli, Patricia L., and Dineen, Ashley A. “Glacial paradoxes during the late Paleozoic ice age: Evaluating the equilibrium line altitude as a control on glaciation.” Gondwana Research, Elsevier 22. (2012): 1-19.