{"id":532,"date":"2015-03-10T18:42:23","date_gmt":"2015-03-10T18:42:23","guid":{"rendered":"http:\/\/www.agron.iastate.edu\/glsi\/?p=532"},"modified":"2025-09-27T08:39:31","modified_gmt":"2025-09-27T13:39:31","slug":"comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey","status":"publish","type":"post","link":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/","title":{"rendered":"Comparison of Surficial Geology Maps Based on Soil Survey and In-Depth Geological Survey"},"content":{"rendered":"<p>Previous studies have suggested researchers should use Soil Survey maps to create surficial geology maps where more spatial detail about surficial geology is needed than is available from maps already produced by geologists. Despite the widespread availability of relatively detailed soil maps in the USA, few areas have a surficial geology map published at similar map scales. This apparent gap between disciplines calls to question the accuracy of soil maps to represent the spatial distribution of surficial geologic materials. Therefore, the purpose of this research is to test the agreement between maps from these two sources. To accomplish this, published surficial geology maps are compared to those derived from Soil Survey maps in an area where geologists have a close relationship with soil scientists, but the coverage of detailed surficial geology maps is limited. This study compares seventeen 1:100,000 and ten 1:24,000 surficial geology maps recently produced by the Iowa Geologic Survey with Soil Survey maps that have been categorized to represent the surficial geology of the same areas. Depending on the state of understanding the geologic history for an area when the map was produced and the acceptance of differences due to cartographic scale, most of the maps were in agreement at 67-99% of the examined sites. Lower agreement percentages were in areas with more complicated geologic histories, such as areas described as loamy sediments or where a thin loess cover could be obscured by bioturbation.<\/p>\n<p><strong>*A map from this article provided the cover image for this edition of <a title=\"Soil Horizons 56(1)\" href=\"https:\/\/www.soils.org\/publications\/sh\/view\/first-look\/soil-horizons-56-1.pdf\/\" target=\"_blank\" rel=\"noopener noreferrer\">Soil Horizons<\/a>.<\/strong><\/p>\n\n<div class=\"paragraph-widget paragraph-widget--text-html\"><div class=\"text-content\">\n<p>Miller, B.A. and C.L. Burras. 2015. Comparison of surficial geology maps based on soil survey and in depth geological survey. <a href=\"https:\/\/www.soils.org\/publications\/sh\/abstracts\/56\/1\/sh14-05-0005\" target=\"_blank\" rel=\"noreferrer noopener\">Soil\u00a0Horizons 56(1). doi:10.2136\/sh14-05-0005.<\/a><\/p>\n<\/div><\/div>\n\n<div class=\"paragraph-widget paragraph-widget--text-html\"><div class=\"text-content\">\n<p><\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Despite the widespread availability of relatively detailed soil maps in the USA, few areas have a surficial geology map published with as much spatial detail. This apparent gap between disciplines calls to question the accuracy of soil maps to represent the spatial distribution of surficial geologic materials. Therefore, the purpose of this research was to test the agreement between maps from these two sources.<\/p>\n","protected":false},"author":3216,"featured_media":10927,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[5,7],"tags":[15,47,67,68,124,135,139],"class_list":["post-532","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-manuscripts","category-miller","tag-alluvium","tag-geomorphology","tag-loamy-sediments","tag-loess","tag-soil-survey","tag-surficial-geology","tag-till"],"acf":[],"featured_image_urls_v2":{"full":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps.jpg",231,200,false],"thumbnail":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps-150x150.jpg",150,150,true],"medium":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps.jpg",231,200,false],"medium_large":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps.jpg",231,200,false],"large":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps.jpg",231,200,false],"1536x1536":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps.jpg",231,200,false],"2048x2048":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps.jpg",231,200,false]},"post_excerpt_stackable_v2":"<p>Despite the widespread availability of relatively detailed soil maps in the USA, few areas have a surficial geology map published with as much spatial detail. This apparent gap between disciplines calls to question the accuracy of soil maps to represent the spatial distribution of surficial geologic materials. Therefore, the purpose of this research was to test the agreement between maps from these two sources.<\/p>\n","category_list_v2":"<a href=\"https:\/\/www.agron.iastate.edu\/glsi\/category\/manuscripts\/\" rel=\"category tag\">Manuscripts<\/a>, <a href=\"https:\/\/www.agron.iastate.edu\/glsi\/category\/miller\/\" rel=\"category tag\">Miller<\/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>Comparison of Surficial Geology Maps Based on Soil Survey and In-Depth Geological Survey - Geospatial Laboratory for Soil Informatics<\/title>\n<meta name=\"description\" content=\"Previous studies have suggested researchers should use Soil Survey maps to create surficial geology maps where more spatial detail about surficial geology is needed than is available from maps already produced by geologists. Despite the widespread availability of relatively detailed soil maps in the USA, few areas have a surficial geology map published at similar map scales. This apparent gap between disciplines calls to question the accuracy of soil maps to represent the spatial distribution of surficial geologic materials. Therefore, the purpose of this research is to test the agreement between maps from these two sources.\" \/>\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\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comparison of Surficial Geology Maps Based on Soil Survey and In-Depth Geological Survey - Geospatial Laboratory for Soil Informatics\" \/>\n<meta property=\"og:description\" content=\"Previous studies have suggested researchers should use Soil Survey maps to create surficial geology maps where more spatial detail about surficial geology is needed than is available from maps already produced by geologists. Despite the widespread availability of relatively detailed soil maps in the USA, few areas have a surficial geology map published at similar map scales. This apparent gap between disciplines calls to question the accuracy of soil maps to represent the spatial distribution of surficial geologic materials. Therefore, the purpose of this research is to test the agreement between maps from these two sources.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/\" \/>\n<meta property=\"og:site_name\" content=\"Geospatial Laboratory for Soil Informatics\" \/>\n<meta property=\"article:published_time\" content=\"2015-03-10T18:42:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-27T13:39:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"231\" \/>\n\t<meta property=\"og:image:height\" content=\"200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bradley Miller\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bradley Miller\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\\\/\"},\"author\":{\"name\":\"Bradley Miller\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#\\\/schema\\\/person\\\/a96fa0c818314fce5f3928c232490277\"},\"headline\":\"Comparison of Surficial Geology Maps Based on Soil Survey and In-Depth Geological Survey\",\"datePublished\":\"2015-03-10T18:42:23+00:00\",\"dateModified\":\"2025-09-27T13:39:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\\\/\"},\"wordCount\":290,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/files\\\/2015\\\/03\\\/Comparison-of-surficial-geology-maps.jpg\",\"keywords\":[\"alluvium\",\"geomorphology\",\"loamy sediments\",\"loess\",\"soil survey\",\"surficial geology\",\"till\"],\"articleSection\":[\"Manuscripts\",\"Miller\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\\\/\",\"url\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\\\/\",\"name\":\"Comparison of Surficial Geology Maps Based on Soil Survey and In-Depth Geological Survey - Geospatial Laboratory for Soil Informatics\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/files\\\/2015\\\/03\\\/Comparison-of-surficial-geology-maps.jpg\",\"datePublished\":\"2015-03-10T18:42:23+00:00\",\"dateModified\":\"2025-09-27T13:39:31+00:00\",\"description\":\"Previous studies have suggested researchers should use Soil Survey maps to create surficial geology maps where more spatial detail about surficial geology is needed than is available from maps already produced by geologists. 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Therefore, the purpose of this research is to test the agreement between maps from these two sources.","og_url":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/","og_site_name":"Geospatial Laboratory for Soil Informatics","article_published_time":"2015-03-10T18:42:23+00:00","article_modified_time":"2025-09-27T13:39:31+00:00","og_image":[{"width":231,"height":200,"url":"https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps.jpg","type":"image\/jpeg"}],"author":"Bradley Miller","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Bradley Miller","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/#article","isPartOf":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/"},"author":{"name":"Bradley Miller","@id":"https:\/\/www.agron.iastate.edu\/glsi\/#\/schema\/person\/a96fa0c818314fce5f3928c232490277"},"headline":"Comparison of Surficial Geology Maps Based on Soil Survey and In-Depth Geological Survey","datePublished":"2015-03-10T18:42:23+00:00","dateModified":"2025-09-27T13:39:31+00:00","mainEntityOfPage":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/"},"wordCount":290,"commentCount":0,"publisher":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/#organization"},"image":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/#primaryimage"},"thumbnailUrl":"https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps.jpg","keywords":["alluvium","geomorphology","loamy sediments","loess","soil survey","surficial geology","till"],"articleSection":["Manuscripts","Miller"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/","url":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/","name":"Comparison of Surficial Geology Maps Based on Soil Survey and In-Depth Geological Survey - Geospatial Laboratory for Soil Informatics","isPartOf":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/#primaryimage"},"image":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/comparison-of-surficial-geology-maps-based-on-soil-survey-and-in-depth-geological-survey\/#primaryimage"},"thumbnailUrl":"https:\/\/www.agron.iastate.edu\/glsi\/files\/2015\/03\/Comparison-of-surficial-geology-maps.jpg","datePublished":"2015-03-10T18:42:23+00:00","dateModified":"2025-09-27T13:39:31+00:00","description":"Previous studies have suggested researchers should use Soil Survey maps to create surficial geology maps where more spatial detail about surficial geology is needed than is available from maps already produced by geologists. 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