The University of Iowa

Paleoenvironments

Rhawn F. Denniston

Research Interests: the use of stalagmites as proxies for past environmental conditions including the Indo-Australian Summer Monsoon, Holocene Australian tropical cyclone activity, and glacial climates of western Iberia and the Midwestern United States

Professor of geology and chair of the Environmental Studies program, Cornell College, Mount Vernon, Iowa.

Ingrid Ukstins Peate

My research involves utilizinging a multi-disciplinary approach to understanding explosive volcanic systems - magma petrogenesis, eruption and emplacement mechanisms of both mafic and silicic pyroclastic deposits, and the holistic interpretation of volcanic stratigraphic sequences containing effusive, explosive and reworked volcanic material.

Jeffrey Dorale

Interests:
Paleoclimatology, Paleoecology, Global change. The use of isotopic and elemental tracers and chronometers to reconstruct past environmental conditions.

Publications:
Dorale, J.A. and Liu, Z., 2009.  Limitations of Hendy test criteria in judging the paleoclimatic suitability of speleothems and the need for replication.  Journal of Cave and Karst Studies 71, 73-80.

Ann Budd

Interests:
Systematics and evolutionary patterns in Cenozoic reef corals, paleoecology of reef, morphometrics.

Publications:
Budd, A.F. and J.M. Pandolfi. 2004. Overlapping species boundaries and hybridization within the Montastraea “annularis” reef coral complex in the Pleistocene of the Bahama Islands. Paleobiology 30: 396-425.

Fukami, H., A.F. Budd, G. Paulay, A. Solé-Cava, C.A. Chen, K. Iwao, and N. Knowlton. 2004. Conventional Taxonomy Obscures Deep Divergence between Pacific and Atlantic Corals. Nature 427: 832-835.

E Arthur Bettis III

Interests:
Reconstruction of past landscapes and environments using data gleaned from physical and geochemical studies of deposits and soils. I use these reconstructions in a variety of applications including documenting rates of dust flux during the last glacial period, understanding conditions controlling the peopling of southeast Asia by hominins, landscape-scale geoarchaeology, and restoration strategies for rivers and streams.

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