A Harmonized Legend for a Mul -State Dominant Soil Parent Material Map Darrell Schulze1,*, Robert Darmody2, John Graveel1, Alfred Hartemink3, Tasios Karathanasis4, Brian Lee4, Cris ne Morgan5, Phillip Owens6, Mar n Rabenhorst7, Philip Schoeneberger8, Brian Slater9, James Thompson10, Sharon Whitmoyer Waltman11
1Purdue University, 2University of Illinois, 3University of Wisconsin, 4University of Kentucky, 5Texas A&M University, 6USDA ARS, 7University of Maryland, 8USDA NRCS, 9The Ohio State University, 10West Virginia University, 11USDA Earth Team Volunteer, *[email protected] UID: 102443
Introduc on Proposed Dominant Soil Parent Material Legend Descrip ve Text for Each Class The Integra ng Spa al Educa onal Experiences (Isee) project has the goal of Organic Descrip ve text for display in a popup box within the Isee app will further helping students understand how and why soils and landscapes vary at Organic Materials define each class. The General Descrip on is intended for a lay audience, different scales and why it ma ers. As part of the project, we are crea ng Eolian and Lacustrine while the Technical Descrip on is intended for a more scien fically literate Dominant Soil Parent Material maps on a state-by-state basis using the Deep Loess audience. Defini ons follow Jackson et al. (2005). A sec on with details for SSURGO database. Our ini al concepts were not fully solidified and legends Eolian Sands / Sandy Sediments soil scien sts could be added as well. currently vary from state to state (see maps below). A common legend is Clayey and Silty Lacustrine Sediments needed. Alluvium Example Descrip ve Text
Alluvium on Ac ve Floodplains Alluvium from Mixed Sources Concept of a Dominant Soil Parent Material Residuum from Acid Clas c Rocks Alluvium from Carbonate Rocks For soils with more than one parent material, depic ng all of them makes an Alluvium from Calcareous Clas c Rocks General Descrip on overly complex map. We pick only the Dominant Soil Parent Material, Alluvium from Acid Clas c Rocks Material weathered from acid sandstone, siltstone, and shale that has defined as: (1) the material that has the greatest impact on other soil Alluvium from Basic/Mafic Igneous or Metamorphic Rocks remained in place. proper es, or (2) the material that is an indicator of other important soil Alluvium from Acid/Silicic Igneous or Metamorphic Rocks proper es. Alluvium from Volcanic Materials Technical Descrip on Residuum is the debris that remains in place when rocks weather physically Glacial and chemically. Residuum can be so thin that unweathered rock occurs at Parent material informa on is extracted from the Official Series Descrip on Loamy Wisconsin Till the base of a thin soil profile, or it can be many meters deep. Residuum is (OSD) for each soil series in each soil map unit. Clayey Wisconsin Till dis nguished on this map by the type of rocks from which it formed. Clas c Low Carbonate Loamy Wisconsin Till Rocks, as used here, is a group term for sandstone, siltstone, and shale, all Wisconsin Outwash of which are sedimentary rocks composed of fragments or clasts derived Illinoian Till from preexis ng rocks. Acid Clas c Rocks do not contain carbonates.
Excerpt from an OSD Illinoian Outwash Underlined text will be defined in a glossary. Coastal MIAMI SERIES Clayey Fluvio-Deltaic Coastal Sediments Dominant Soil Parent Material: Loamy Fluvio-Deltaic Coastal Sediments The Miami series consists of very deep, moderately well Loamy Wisconsin Till drained soils that are moderately deep to dense till. Miami Sandy Fluvio-Deltaic Coastal Sediments Comments & Issues to Resolve soils formed in as much as 46 cm (18 inches) of loess or Marine Coastal Sediments silty material and in the underlying loamy till. They are on • Alluvium and Volcanic classes have not yet been extensively tested. till plains. Slope ranges from 0 to 60 percent. Mean annual Ashy Coastal Sediments • Word choice: Sediments, Deposits, or Materials? precipitation is 1016 mm (40 inches), and mean annual Residuum temperature is 11.1 degrees C (52 degrees F). • Is Fluvio-Deltaic needed in the class names for coastal sediments? Residuum from Carbonate Rocks • Is a separate Mining Regolith only class needed? Residuum from Calcareous Clas c Rocks • Can Residuum and Colluvium be combined into Residuum and Colluvium Residuum from Acid Clas c Rocks from … classes that are described more fully in the descrip ve text? Residuum from Basic/Mafic Igneous or Metamorphic Rocks • Volcanic Materials, Volcanic Deposits, or other terminology? Most Dominant Soil Parent Material class names consist of Residuum from Acid/Silicic Igneous or Metamorphic Rocks • a mode of deposi on or forma on (alluvium, residuum, ll, etc.) Residuum from Tuff • a chemistry or mineralogy descriptor (acid clas c rocks, carbonate rocks, Residuum from Undifferen ated Rocks References basic/mafic igneous or metamorphic rocks, etc.) or Colluvium th • a par cle size descriptor (clayey, loamy, sandy, etc.). Colluvium from Carbonate Rocks Jackson, J. A., J. P. Mehl, K. K. E. Neuendorf. 2005. Glossary of Geology, 5 ed. Colluvium from Calcareous Clas c Rocks American Geological Ins tute, Alexandria, VA. 779 p. Colluvium from Acid Clas c Rocks Colluvium from Basic/Mafic Igneous or Metamorphic Rocks Acknowledgements Colluvium from Acid/Silicic Igneous or Metamorphic Rocks Colluvium from Tuff This material is based upon work Download the Isee App supported by the Coopera ve State Colluvium from Undifferen ated Rocks Research, Educa on, and Extension Free in the Apple Volcanic Service, U.S. Department of App Store. For iPad Volcanic Materials Agriculture, under Award No only at this me. Miscellaneous 2013-70003- 20924. Any opinions, Search for “Isee Disturbed Areas / Urban Land / Mining Regolith / Pits findings, conclusions, or soils” or go to Mining Regolith recommenda ons expressed in this h ps://appsto.re/us/nbdy7.i publica on are those of the author(s) Water and do not necessarily reflect the view Not Surveyed or No Digital Data Available of the U.S. Department of Agriculture.