DR. TIM WALSH RESEARCH

At the Swope Limestone in Kansas City, KS. General Interests
All aspects of Late Paleozoic strata and fauna. Invertebrate paleontology, micropaleontology, particularly conodonts, and morphometrics. General sedimentation and stratigraphy, sequence stratigraphy, including paleoenvironmental-paleoclimatic interpretations. Continuing interest in petroleum geology, especially in relation to study of petrophysical well logs and subsurface studies with emphasis on their association to outcrop investigations.

Current Activities
Primary research concern is continuing work on a broad study of early Permian carbonates and their fauna in north central Texas. Several units exhibit enigmatic cyclical deposits, unusual faunal assemblages and marked vertical and lateral facies variation in a relatively limited outcrop. Detailed investigations of petrography, stratigraphy and paleontology of these formations are underway. These efforts will aid in further developing depositional models and understanding the paleo-environmental conditions that created the unique combination of characters present here.

Examination of strata and fauna of several localities in New Mexico is underway. These efforts should culminate in better delineation of Late Pennsylvanian and Early Permian zone and stage boundaries. Improvement in the understanding of stratigraphic sequences of these areas is also a prime consideration.

Morphometric analysis of conodonts, particularly the genus Streptognathodus is an ongoing activity. These studies are intended to aid in improved characterization of taxa and better discernment of evolutionary trends.

Conodonts from the Elm Creek Formation, Artinskian, North Central Texas.

Publications
Walsh, Tim R., 2000. Quantitative Examination of Element Asymmetry in Streptognathodus (Conodont) From the Upper Pennsylvanian And Lower Permian of Southern Kansas. Geological Society of America South Central Section - Abstracts with Programs v. 32, no. 3 pg A-43

Barrick, James E. and Walsh, Tim R., 1999. Some older North American types of Idiognathodus and Streptognathodus. in Middle and Upper Pennsylvanian Cyclothem Succession in Midcontinent Basin, U.S.A., Philip H. Heckel, editor, Kansas Geological Survey Field Trip Guidebook #8 KGS Open-File Report 99-27

Walsh, Tim R., 1999. Preliminary Morphometric Analysis of Streptognathodus (Conodont) From the Upper Pennsylvanian And Lower Permian of Southern Kansas. Geological Society of America South Central Section - Abstracts with Programs. v. 31, no. 1 pg 37Dissertation

Permian Foramol Carbonates from a Variable Salinity Shelf Environment: The Elm Creek Limestone (Artinskian) of North Central Texas.  (2002)

 

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