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Steven G. Driese*, Lee C. Nordt, Amos V. Culbertson, Emily J. Beverly, Gary E. Stinchcomb, & Forrest Williamson (STATS) Department of Geology, Paleoclimatology.

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Presentation on theme: "Steven G. Driese*, Lee C. Nordt, Amos V. Culbertson, Emily J. Beverly, Gary E. Stinchcomb, & Forrest Williamson (STATS) Department of Geology, Paleoclimatology."— Presentation transcript:

1 Steven G. Driese*, Lee C. Nordt, Amos V. Culbertson, Emily J. Beverly, Gary E. Stinchcomb, & Forrest Williamson (STATS) Department of Geology, Paleoclimatology Research Group One Bear Place #97354, Baylor University Waco, TX ; South-central Section GSA 2013 Austin

2 Have lead to major improvements for geoscientists in interpreting climate from the fossil soil (paleosol) record using studies of surface soil systems (a) Paleoprecipitation (MAP) (b) Seasonality of paleoprecipitation (c) Paleotemperature (d) Soil drainage and maturitycharacteristics

3 (climate, organisms, relief, parent material, and time) INPUT (cl, o, r, p, t,…) Function (f) OUTPUT f(cl, o, r, p, t,…) equals Soil (S) or soil property (s) Soils are a multi-variable system …also, climate influence on soil system is non-linear Demonstrated by Jenny (1941) and many others Jennys (1941) Environmental Factor Model

4 Texas Vertisol Climosequence: NSF EAR (Driese, Nordt and Mora); University of Tennessee- Knoxville, Baylor, TAMU, USDA-NRCS

5 League Series: MAP mm Lake Charles: MAP mm Laewest Series: MAP mm Victoria Series: MAP mm Parent Material: Beaumont Fm. (>35-40 ka) alluvium: Texas Coast Prairie

6 Nordt and Driese (2010) Geology, v. 38, p

7 Culbertson (2013) M.S. Thesis, Baylor University

8 Culbertson, (2013) Baylor Univ. M.S. Thesis

9 Upper Paleosol Interval Pedogenic siderite Bssg2 Bssg1 Culbertson (2013) Baylor Univ. M.S. Thesis

10 Lower Paleosol Interval Culbertson (2013) Baylor Univ. M.S. Thesis Abrupt, rapid drowning

11 Upper Paleosol Interval Culbertson (2013) Baylor Univ. M.S. Thesis Slow, gradual drowning

12 NRCS/USDA (soils) NED (elevation) NLCD (land cover) PRISM (MAP & MAT) Paleosol literature time period morphology geochemistry, etc… Database aggregation & management Paleosol Paleoclimate Model (BU-PPM v. 1.0) Database workflow researcher (Gary Stinchcomb, former Baylor GEO post-doc Penn. State) + Forrest Williamson from Baylor STATS)

13 Stinchcomb et al. (2013) Geochimica et Cosmochimica Acta, in review Based on 685 U.S. Soil Profiles and Partial Least Squares Regression of 11 Major Oxides

14 Stinchcomb et al. (2013) Geochimica et Cosmochimica Acta, in review Based on 685 U.S. Soil Profiles and Partial Least Squares Regression of 11 Major Oxides

15 BU-PPM 1.0 results: Baylor enlarged U.S. data set vs. original Marbut (1935) soil data base used for CIA-K ModelRMSE MAP RMSE MAT RMSPE MAP RMSPE MAT BU-PPM CIA-K (Na 2 O+K 2 O)/Al 2 O Stinchcomb et al. (2013) Geochimica et Cosmochimica Acta, in review

16 BU-PPM 1BU-PPM website – graphical interface

17 Lower Paleosol IntervalUpper Paleosol Interval

18 Soil Age (yr) MAP (mm) Ships Pledger Burleson Lake Charles Mercedes Older South Texas soil (Mercedes) in lower MAP resembles younger East Texas soil (Ships) in higher MAP


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