{"id":10012,"date":"2025-02-18T13:38:57","date_gmt":"2025-02-18T19:38:57","guid":{"rendered":"https:\/\/www.agron.iastate.edu\/glsi\/?page_id=10012"},"modified":"2025-10-01T13:00:57","modified_gmt":"2025-10-01T18:00:57","slug":"surficial-geology-of-indiana-gis","status":"publish","type":"post","link":"https:\/\/www.agron.iastate.edu\/glsi\/gis-data\/physiography-gis-data\/surficial-geology-of-indiana-gis\/","title":{"rendered":"Surficial Geology of Indiana GIS Data"},"content":{"rendered":"\n<div class=\"wp-block-ugb-container ugb-container ugb-ee96871 ugb-container--v2 ugb-container--design-plain ugb-main-block\"><style>@media screen and (min-width:768px){.ugb-ee96871.ugb-container{margin-bottom:0px !important}}@media screen and (min-width:768px){.ugb-ee96871 > .ugb-inner-block > .ugb-block-content > *{padding-bottom:0px !important}}<\/style><div class=\"ugb-inner-block\"><div class=\"ugb-block-content\"><div class=\"ugb-container__wrapper ugb-ee96871-wrapper\"><div class=\"ugb-container__side\"><div class=\"ugb-container__content-wrapper ugb-ee96871-content-wrapper\"><div class=\"paragraph-widget paragraph-widget--text-html\">\n\t<div class=\"text-content\">\n\t\t<h4>This raster dataset presents a detailed map of surface geologic (parent) materials across Indiana, compiled from maps originally delineated at 1:24,000 to 1:12,000 scales. The source data was merged by USDA-NRCS into the gSSURGO database at 10-meter resolution and interpreted by the Geospatial Laboratory for Soil Informatics (GLSI) to classify parent materials to a depth of 2 meters.<\/h4>\n\n\t<\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-ugb-container ugb-container ugb-8bdbc79 ugb-container--v2 ugb-container--design-plain ugb-main-block\"><style>@media screen and (min-width:768px){.ugb-8bdbc79.ugb-container{margin-bottom:0px !important}}@media screen and (min-width:768px){.ugb-8bdbc79 > .ugb-inner-block > .ugb-block-content > *{padding-top:0px !important;padding-bottom:0px !important}}<\/style><div class=\"ugb-inner-block\"><div class=\"ugb-block-content\"><div class=\"ugb-container__wrapper ugb-8bdbc79-wrapper\"><div class=\"ugb-container__side\"><div class=\"ugb-container__content-wrapper ugb-8bdbc79-content-wrapper\">\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-9cc33fa\" data-block-id=\"9cc33fa\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-9cc33fa-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-001bb93\" data-v=\"4\" data-block-id=\"001bb93\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-001bb93-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-001bb93-inner-blocks\"><div class=\"paragraph-widget paragraph-widget--text-html\">\n\t<div class=\"text-content\">\n\t\t<h2>Interpretation Method<\/h2>\n<p>Surficial material types were derived from NRCS Official Soil Series Descriptions (OSD), with supplemental interpretation applied where necessary using soil profile data and spatial correlation to nearby mapped series. The classification reflects generalized geologic origins such as alluvium, glacial till, outwash, loess, and bedrock.<\/p>\n<h2>Applications and Visualization Tips<\/h2>\n<p>This dataset is ideal for understanding the geologic foundation of soils and how it influences landscape processes, drainage, and soil formation. It is particularly effective when visualized alongside fine-resolution digital elevation models (DEMs) and hillshades, highlighting the topographic-geologic relationship across the state.<\/p>\n<h2>Resolution and Coverage<\/h2>\n<p>10-meter raster resolution covering the entire state of Indiana.<\/p>\n\n\t<\/div>\n<\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-ce9246d\" data-v=\"4\" data-block-id=\"ce9246d\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-ce9246d-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-ce9246d-inner-blocks\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1253\" height=\"2058\" src=\"https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1.png\" alt=\"\" class=\"wp-image-10014\" style=\"width:450px\" srcset=\"https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1.png 1253w, https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-183x300.png 183w, https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-623x1024.png 623w, https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-768x1261.png 768w, https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-935x1536.png 935w, https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-1247x2048.png 1247w\" sizes=\"auto, (max-width: 1253px) 100vw, 1253px\" \/><\/figure>\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-ugb-container ugb-container ugb-d1207b7 ugb-container--v2 ugb-container--design-plain ugb-main-block\"><style>.ugb-d1207b7 .ugb-inner-block{text-align:center}@media screen and (min-width:768px){.ugb-d1207b7.ugb-container{margin-bottom:0px !important}}@media screen and (min-width:768px){.ugb-d1207b7 > .ugb-inner-block > .ugb-block-content > *{padding-top:0px !important}}<\/style><div class=\"ugb-inner-block\"><div class=\"ugb-block-content\"><div class=\"ugb-container__wrapper ugb-d1207b7-wrapper\"><div class=\"ugb-container__side\"><div class=\"ugb-container__content-wrapper ugb-d1207b7-content-wrapper\"><div class=\"paragraph-widget paragraph-widget--text-html\">\n\t<div class=\"text-content\">\n\t\t<h2 class=\"text-align-center\">GIS Map Folder Download<\/h2>\n<p class=\"text-align-center\">Click the button below to access the GIS data.<\/p>\n\n\t<\/div>\n<\/div>\n\n\n<a href=\"https:\/\/www.agron.iastate.edu\/glsi\/?ddownload=5324\" title=\"Download\" rel=\"nofollow\" class=\"ddownload-button button-yellow id-5324 ext-\">Download<\/a>\n<\/div><\/div><\/div><\/div><\/div><\/div>\n\n\n<div class=\"paragraph-widget paragraph-widget--text-html\">\n\t<div class=\"text-content\">\n\t\t<h2>GIS Map Details<\/h2>\n<p>This raster is a highly detailed map of geologic materials at the surface (delineations made from maps at 1:24,000 to 1:12,000 scale). The smaller extent maps were merged together by USDA-NRCS to produce the gSSURGO spatial database, covering the entire state at a 10m resolution. The gSSURGO map was then interpreted by Iowa State University\u2019s Geospatial Laboratory for Soil Informatics (GLSI) for parent material, which is equivalent to the geologic material to a depth of 2 meters from the surface. Surficial material attributes were extracted from the NRCS official soil series descriptions (OSD), but at times some additional interpretation was needed based on typical soil profile properties and spatial relationships with better-defined soil series. Because of the common relationship between surficial geology and topography, digital elevation models would be complementary to this data set. Draping this surfical geology data set over hillshades derived from fine resolution elevation data works especially well.<\/p>\n<h2>References<\/h2>\n<p>Miller, B.A. and C.L. Burras. 2015. Comparison of surficial geology maps based on soil survey and in depth geological survey.&nbsp;<a title=\"Soil Horizons\" href=\"https:\/\/web.archive.org\/web\/20240603122810\/https:\/\/www.soils.org\/publications\/sh\/abstracts\/56\/1\/sh14-05-0005\" target=\"_blank\" rel=\"noopener noreferrer\">Soil&nbsp;Horizons 56(1). doi:10.2136\/sh14-05-0005.<\/a><\/p>\n<p>Soil Survey Staff. 2014. Official Soil Series Descriptions (OSD). United States Department of Agriculture, Natural Resources Conservation Service.&nbsp;<a title=\"Official Soil Series Descriptions\" href=\"https:\/\/web.archive.org\/web\/20240603122810\/https:\/\/soilseries.sc.egov.usda.gov\/osdname.asp\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/soilseries.sc.egov.usda.gov\/osdname.asp<\/a><\/p>\n<p>Soil Survey Staff. 2014. Gridded Soil Survey Geographic (gSSURGO). United States Department of Agriculture, Natural Resources Conservation Service.&nbsp;<a title=\"NRCS geospatial data gateway\" href=\"https:\/\/web.archive.org\/web\/20240603122810\/http:\/\/datagateway.nrcs.usda.gov\/\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/datagateway.nrcs.usda.gov<\/a><\/p>\n\n\t<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":3216,"featured_media":10014,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[305],"tags":[],"class_list":["post-10012","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-physiography-gis-data"],"acf":[],"featured_image_urls_v2":{"full":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1.png",1253,2058,false],"thumbnail":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-150x150.png",150,150,true],"medium":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-183x300.png",183,300,true],"medium_large":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-768x1261.png",768,1261,true],"large":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-623x1024.png",623,1024,true],"1536x1536":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-935x1536.png",935,1536,true],"2048x2048":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/02\/Surficial-Geology-IN-1-1247x2048.png",1247,2048,true]},"post_excerpt_stackable_v2":"<p>This raster dataset presents a detailed map of surface geologic (parent) materials across Indiana, compiled from maps originally delineated at 1:24,000 to 1:12,000 scales. The source data was merged by USDA-NRCS into the gSSURGO database at 10-meter resolution and interpreted by the Geospatial Laboratory for Soil Informatics (GLSI) to classify parent materials to a depth of 2 meters. Interpretation Method Surficial material types were derived from NRCS Official Soil Series Descriptions (OSD), with supplemental interpretation applied where necessary using soil profile data and spatial correlation to nearby mapped series. The classification reflects generalized geologic origins such as alluvium, glacial till,&hellip;<\/p>\n","category_list_v2":"<a href=\"https:\/\/www.agron.iastate.edu\/glsi\/category\/gis-data\/physiography-gis-data\/\" rel=\"category tag\">Physiography GIS Data<\/a>","author_info_v2":{"name":"Bradley Miller","url":"https:\/\/www.agron.iastate.edu\/glsi\/author\/millerba\/"},"comments_num_v2":"0 comments","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Surficial Geology of Indiana GIS Data - Geospatial Laboratory for Soil Informatics<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.agron.iastate.edu\/glsi\/gis-data\/physiography-gis-data\/surficial-geology-of-indiana-gis\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" 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