Geologic map of kansas

The term Dakota Group was recognized in this sense by Moore (1935a) and was so used on the Geologic Map of Kansas prepared by Moore and Landes in 1937. According to Waite (1942), at a conference of Kansas Survey geologists in January 1941, it was decided that the term Dakota Group should include all strata from the base of the Cheyenne ...

Geologic map for the Anadarko Basin showing thickness of strata between the Silurian Hunter Group and the Pennsylvanian Desmoinesian Anadarko Basin Geologic Cross Section. The Anadarko Basin is a geologic depositional and structural basin centered in the western part of the state of Oklahoma and the Texas Panhandle, and extending into …Beta. Welcome to the new mapView (beta)! This version of mapView uses a modern codebase and a redesigned interface that incorporates many of your comments and suggestions. We welcome your feedback as we continue to add content and functionality to the interface. Look for many more features coming soon. We hope you enjoy exploring …Kansas. The purpose of these investigations is to provide geologic maps and reports that will show the relations between the geology and the occurrence of construction materials. The Pottawatomie County report is a product of the geologic mapping and mineral re­ source investigation program of the natural resources studies of theBarry County - Cassville. Barton County - Lamar. Bates County - Butler. Benton County - Warsaw. Bollinger County - Marble Hill. Boone County - Columbia. Buchanan County - St. Joseph. Butler County - Poplar Bluff. Caldwell County - Kingston.More than 450,000 wells related to oil and gas production have been drilled in Kansas. The KGS's interactive Kansas oil and gas well and field map shows the location of all the named oil and gas fields in Kansas as well as the individual wells within the fields, such as oil and gas wells, dry holes, abandoned wells, and saltwater disposal wells used to store wastewater produced with oil and gas. In 1935, a preliminary announcement on results of ground-water studies by Theis and others was released. In 1937, the areal geology was delineated on a geologic map of Kansas (Moore and Landes, 1937) having a scale of about 8 miles to the inch (1:500000), issued by the State Geological Survey.

30’x60′ quadrangle maps cover 30 minutes of latitude by 60 minutes of longitude, or about 1,760 square miles in Utah, and are the standard series for intermediate-scale geologic mapping. In this series, one inch on the map represents 100,000 inches, or 1.6 miles, on the ground. 1×2-degree quadrangle maps cover 1 degree of latitude by 2 ...GeoFabLab is collection of 3-D models of rocks, minerals, and landscape features. Geological Log Analysis, by John Doveton. The fundamental aim of this course is to enable you to develop skills in reading geology from logs. Resources on Hydraulic Fracturing --the KGS presents these links to help people learn about hydraulic fracturing of oil ... The Riley County map, one in a series of new geologic maps of Kansas counties being produced by the Survey, was drawn at a scale of 1:50,000, so that one inch on the map equals about 0.8 of a mile of actual distance. The map measures 48 by 40 inches. In addition to geology, the map shows roads, streams, towns, and lakes.For additional information, the KGS Geologic Maps of Kansas Page. Previous Investigations. The sequence of rocks that crop out in Johnson and adjacent counties has been studied and described by the following geologists: Swallow and Hawn (1865), Haworth (1894, 1895, 1898), Bennett (1896), Keyes (1899), Todd (1909, 1911, 1918), Culbertson ...This map was prepared as a collaborative effort with the Missouri Division of Geology and Land Survey, the Kansas Geological Survey, and the Nebraska Conservation …If you are looking for a new or used Lexus in Kansas, there are several things you can do to find the best deals. In this article, we will discuss how to find the best deals on Kansas Lexus cars.The High Plains Aquifer Atlas, compiled by the Kansas Geological Survey, features more than 70 maps—several animated or interactive—that can be used to investigate such timely topics as changes in groundwater levels and availability of groundwater over time, water use, water rights, and the region's climate conditions. Four animated maps in ...

The Precambrian basement rocks of the continental United States are largely covered by younger sedimentary and volcanic rocks, and the availability of updated aeromagnetic data (NAMAG, 2002) provides a means to infer major regional basement structures and tie together the scattered, but locally abundant, geologic information. …Geologic unit mapped in Kansas: eolian silts. Zeller, D.E., ed., 1968, The Stratigraphic Succession in Kansas, State Geological Survey of Kansas Bull. 189.A map of the Texas fault lines shows where the most and least risk areas in the state are located. The Earthquake Hazards Program, part of the U.S. Geological Survey, shows the fault lines and seismic activity risk for all of the states in ...Map Locator Tool. U.S. Forest Service Visitor Maps. State Maps. 7.5 & 15 Minute Topographic Maps. 30 x 60 Minute Topographic Maps. 1 x 2 Degree Topographic Maps. National Parks. Historical Maps.KGS Map M-118--Surficial Geology of Kansas. The following image is extracted from the Surficial Geology of Kansas, available as M-118 (68 x 39 in., scale: 1:500,000) from the Publications Sales Office of the KGS. Also available are larger images: M118_150dpi.pdf, Acrobat PDF, full size, 150 DPI, 15 MB. M118_72dpi.jpg, JPEG, full size, 72 DPI, 5 MB.

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Smith, B.D., and Archer, A.W., 1995, Geologic map, Riley County: Kansas Geological Survey, Map M-36, scale 1:50,000, 42 1/2 x 45 inches Paper copies of the complete map (with stratigraphic column and legend info) can be purchased from the Kansas Geological Survey, 1930 Constant Ave., Lawrence, KS 66047 (or phone 785-864-3965) and at 4150 W ...The U.S. Geological Survey and collaborators from EcoAnalysts, Inc., completed field and laboratory studies during 2016–19 to evaluate the toxicity of metals to freshwater mussels in streams draining the Tri-State Mining District. This project consisted of (1) sampling and analysis of metals in water and sediment, (2) surveys of mussel ...The maps range from the highly detailed 1:24,000-scale series to two generalized 1:500,000-scale wall maps of the whole state. The following Kansas maps are available from the Kansas Geological Survey. A free index also is available.Figure 1--Index map of Kansas showing area described in this report and areas covered by other online geologic reports, as of Sept. 2008. For additional information, please visit the KGS Geologic Maps of Kansas Page. Climate--Ellsworth County lies on the western margin of the subhumid climatic zone (Trewartha, 1941).For additional information, please visit the KGS Geologic Maps of Kansas Page. Previous Investigations. Geologic and hydrologic studies in southwestern Kansas were made in 1885 by Hay (1890) who briefly discussed the geology and depths to water in this area. A similar but less detailed study was made in the same area in 1886 by St. John (1887).

Geology of Kansas. To comprehend the main features connected with the mineral deposits of Kansas, an understanding of the state's geologic setting is essential. Accordingly a brief description of the main rock divisions and major structural elements found in this region is offered.A digital version of the stratigraphic chart from Bulletin 189 is available online in JPEG and PDF formats. A digital version of a map available as M-118 (68 x 39 in., scale: 1:500,000) available from the Kansas Geological Survey. A digital version of a map available as a postcard and as an 8 1/2 by 11 inch sheet showing generalized geology.Explore. Mapping application to display the surficial geology of Kansas. To depict the age and type of bedrock at or near the surface for Kansas as shown in Map M-118,Locate a Topo Map. Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation. They also organize, maintain, and publish the geospatial baseline of the Nation's topography, natural landscape, built environment and more.The department’s Missouri Geological Survey has been creating and archiving geologic maps of Missouri for more than 160 years. Geologic maps show the distribution, composition, age and structure of the various solid materials that make up Earth's crust. Geologic maps are used for decision making in various economic and infrastructure planning ... Figure 1--Index map of Kansas showing area described in this report and areas covered by other geologic maps, as of Feb. 2002. For additional information, the KGS Geologic Maps of Kansas Page. According to the 1950 census, Osage County has a population of 12,811. The principal cities are Osage City, 1,919; Burlingame, 1,065; Lyndon, 729; ...Figure 1--Index map of Kansas showing area described in this report and areas covered by other geologic maps, as of Jan. 2002. For additional information, see the KGS Geologic Maps of Kansas Page. Previous Work. Many geologists have contributed to the understanding of the geology of Franklin County.Kansas. Satellite Image. Kansas. on a USA Wall Map. Kansas Delorme Atlas. Kansas on Google Earth. The map above is a Landsat satellite image of Kansas with County boundaries superimposed. We have a more detailed satellite image of Kansas without County boundaries. ADVERTISEMENT.Assessment of Groundwater Mineralization in the Upper Arkansas River Corridor. Links. Kansas By County, State Geological Surveys, Repositories of Geological Materials, Kansas Sites, Universities, Professional Organizations, more... Recent Earthquakes ...Because no detailed digital mapping has been done for this county, this map is extracted from the state geologic map. The Kansas Data Access and Support Center (DASC) has GIS data for this county ... Cartographic Services, Kansas Geological Survey Updated December 8, 2020Oct 31, 2008 · Originally published in 1972 as Kansas Geological Survey Bulletin 204, part 4. This is, in general, the original text as published. The information has not been updated. Abstract. The major structural features within the Manhattan area, the Salina basin, Abilene anticline, Irving syncline, Nemaha anticline, and Forest City basin, lie beneath a ... The information has not been updated. An Acrobat PDF version (1.2 MB) is also available, with map available separately. There are no in situ exposures of Precambrian rocks in the State of Kansas. Exposures in states adjoining to the north, south, and east are limited to small areas in eastern and southeastern Oklahoma and southeastern Missouri.

The detailed map shows the US state of Kansas with boundaries, the location of the state capital Topeka, major cities and populated places, rivers and lakes, interstate highways, principal highways, and railroads. You are free to use this map for educational purposes (fair use); please refer to the Nations Online Project. More about …

Fig. 1--Index map of Kansas showing area described in this report and areas covered by other online geologic reports, as of Feb. 2008. For additional information, please visit the KGS Geologic Maps of Kansas Page. Previous geologic and hydrologic work.Program activity to compile a national-scale geologic map database to support. national and regional level projects, including mineral resource and geo-. environmental assessments. The only comprehensive sources of regional- and. national-scale geologic maps are state geologic maps with scales ranging from. 1:100,000 to 1:1,000,000. The U.S. Geological Survey and collaborators from EcoAnalysts, Inc., completed field and laboratory studies during 2016–19 to evaluate the toxicity of metals to freshwater mussels in streams draining the Tri-State Mining District. This project consisted of (1) sampling and analysis of metals in water and sediment, (2) surveys of mussel ...National Geologic Map Database - NGMDB. The National Geologic Map Database serves as the authoritative, comprehensive resource for information about paper and digital geoscience maps and reports on the …Hydrogen formed deep underground by natural processes could be a major new source of untapped carbon-free power–and unlike oil or gas, the supply is virtually unlimited. T he push to wean the ...KGS Map M-118--Surficial Geology of Kansas. The following image is extracted from the Surficial Geology of Kansas, available as M-118 (68 x 39 in., scale: 1:500,000) from the Publications Sales Office of the KGS. Also available are larger images: M118_150dpi.pdf, Acrobat PDF, full size, 150 DPI, 15 MB. M118_72dpi.jpg, JPEG, full size, 72 DPI, 5 MB. Progressing from the oldest to the current, the four major eras of Earth’s geological history are Precambrian, Paleozoic, Mesozoic and Cenozoic. The current GTS era, the Cenozoic Era, began 65.5 million years ago.Feb 8, 2017 · In 1935, a preliminary announcement on results of ground-water studies by Theis and others was released. In 1937, the areal geology was delineated on a geologic map of Kansas (Moore and Landes, 1937) having a scale of about 8 miles to the inch (1:500000), issued by the State Geological Survey.

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Montgomery counties, Kansas: M.S. thesis, Department of Geology, University of Kansas, 54 p. (Also available as Kansas Geological Survey, Open-file Report 62-4.) Heckel, P. H., 1991, Lost Branch Formation and revision of upper Desmoinesian stratigraphy along midcontinent Pennsylvanian outcrop belt: Kansas Geological Survey, Geology Series 4, 67 p.Sandstone is the primary rock that makes up the Smoky Hills. The Dakota Formation is a geological unit consisting of sandstone. Portions of northern/central Kansas consist of this unit [1] [2].The sandstone from this region was used for building forts in the region, in particular, Fort Larned and Fort Harker. [3][4].On the geologic map of Kansas (Moore and Landes, 1937), a large part of the sand dune area and the alluvium along the Arkansas, Little Arkansas, and Smoky Hill rivers were distinguished from the McPherson formation.The only arc topology changes were to close polygons or delete overshoots. The digital geologic map was released with a marker bed feature layer. Unfortunately, the marker or formation base layer for Crawford County is not available. These data were digitized from a paper library copy of the Kansas geologic map and added to the …Jan 14, 2015 · Copies of the Pawnee County map are available from the Kansas Geological Survey at 1930 Constant Ave., Lawrence, KS 66047-3724 (phone 785-864-3965, email [email protected]) and at 4150 W. Monroe St., Wichita, KS 67209-2640 (phone 316-943-2343, email [email protected]). Most polygon layers have some transparency set (e.g. the geologic map layers are set at 20% transparent by default). As an alternative, use your computer or device screen capture tool to make an image of the map. We are currently working on a solution for this issue. Legend Issues: Some legend items may not print in the layout.Aug 29, 2023 · This product is available, please note the publication series and number, and then contact: Kansas Geological Survey. University of Kansas. 1930 Constant Ave. Lawrence, KS 66047-3726. Phone: (785) 864-3965. Figure 1--Index map of Kansas showing area described in this report and areas covered by other online geologic reports, as of June 2009. For additional information, please visit the KGS Geologic Maps of Kansas Page. Ground water is one of the principal natural resources of Cloud County. Nearly all public, domestic, and industrial water supplies ...Northeast Kansas encompasses the Glaciated physiographic region in the north and part of the Osage Cuestas along its southern edge. At sites in this area, you'll find massive quartzite boulders transported from northern states by glaciers, a water stop vital to travelers on the Oregon Trail, scenic drives, and excellent geologic illustrations of changes caused by the cycle of seas covering ...Ross, Jorgina A., 1991, Geologic Map of Kansas: Kansas Geological Survey, Univ. of Kansas, Map M-23, scale 1:500,000. The KGS county geologic mapping program makes basic geologic information about the state available to the public. Topographic maps produced by the U.S. Geological Survey show natural and manmade features on the surface as well as elevation contours. Topographic maps of Kansas in varying levels of detail are available from the KGS. ….

Click in the geologic map to zoom in. Publication Info Paper copies of the complete map (with stratigraphic column and legend info) can be purchased from the Kansas Geological Survey, 1930 Constant Ave., Lawrence, KS 66047 (or phone 785-864-3965) and at 4150 W. Monroe St., Wichita, KS 67209-2640 (phone 316-943-2343).Geologic maps for Kansas counties are available from the Kansas Geological Survey. The KGS also has available a wall-size geologic map of the entire state and a map of the …Kansas Geological Survey provides geological, water resource, oil and gas, and mineral information for Kansas. Kansas Geological Survey. Stratigraphic Nomenclature KGS Committee International Commission on Stratigraphy ... Kansas Geological Survey, Geology Resources Updated Nov. 16, 2018Introduction. Geologic maps are maps that depict the rock units that crop out at Earth’s surface. Typically, they use different colors (or different fill patterns) to distinguish between different geologic units (or formations).Units (members, formations, groups, supergroups, etc.) meet at contacts, which can be of several varieties.To make relationships between …Figure 1--Index map of Kansas showing area described in this report and areas covered by other online geologic reports, as of May 2009. For additional information, please visit the KGS Geologic Maps of Kansas Page. Ground water is one of the principal natural resources of Cowley County. It is the source of all public water supplies, all ...Geophysical maps, especially the second vertical derivative of gravity map (fig. 2), confirm these strongly intersecting relationships. Figure 2--Second vertical derivative magnetic map of Kansas (reduced to the pole) compiled by the Kansas Geological Survey. The MRS is strongly apparent in the north-central part of the state, but other ...Figure 1 --Index map of Kansas showing area described in this report and areas covered by other online geologic reports, as of March 2004. For additional information, please visit the KGS Geologic Maps of Kansas Page . As a part of this program, an investigation of the geology and ground-water resources of Marshall County was begun in June 1951.Jul 6, 2018 · The only arc topology changes were to close polygons or delete overshoots. The digital geologic map was released with a marker bed feature layer. Unfortunately, the marker or formation base layer for Crawford County is not available. These data were digitized from a paper library copy of the Kansas geologic map and added to the feature layer. Geologic mapping was on a base map compiled by the State Highway Commission of Kansas. This field mapping was greatly aided by the use of aerial photographs supplied by the Soil Conservation Service and the Agricultural Adjustment Administration offices in Dighton. Frequent references to the geologic map of Kansas … Geologic map of kansas, The data release for the geologic map of the Challis 1 x 2 degrees quadrangle, Idaho, is a Geologic Map Schema (GeMS)-compliant version that updates the GIS files for the geologic map published in U.S. Geological Survey (USGS) Miscellaneous Investigations I-1819 (Fisher and others, 1992). The updated digital data present the …, Call Number: GB605.O92 W42 1992. Publication Date: 1992. The Geology of the Kansas City Group at Kansas City by Eldon J. Parizek and Richard J. Gentile. Call Number: QE673 .G37 1965 Closed stacks. Publication Date: 1965. here. Linda Hall Library's collections include many books and journals related to local and North American natural history ..., Geologic map of the Saint Joseph area, Missouri and Kansas. The map shows the surficial geology, including alluvium, loess, till, terrace alluvium, eolian silt, glaciofluvial gravel, and bedrock outcrops in the area around St. Joseph, Missouri. Info: Geologic map of the Storm King Mountain quadrangle, Garfield County, Colorado , Originally published in 1974 as Kansas Geological Survey Ground-water Series 2. This is, in general, the original text as published. The information has not been updated. ... Plate 1--Geologic map of Nemaha County, Kansas Available as an Acrobat PDF file, 2.6 MB Plate 2--Fence diagram showing correlation of stratigraphy in Nemaha County, ..., U.S. Department of the Interior | U.S. Geological Survey Supported by the National Cooperative Geologic Mapping Program Page Contact Information: Personnel Page Last Modified: Wed Oct 18 05:52:11 2023., Cancel. Open Dashboard, Geology of Kansas. To comprehend the main features connected with the mineral deposits of Kansas, an understanding of the state's geologic setting is essential. Accordingly a brief description of the main rock divisions and major structural elements found in this region is offered., Fig. 1--Index map of Kansas showing area described in this report and areas covered by other online geologic reports, as of July 2008. For additional information, please visit the KGS Geologic Maps of Kansas Page. As a part of these investigations, ..., Fig. 1--Index map of Kansas showing area described in this report and areas covered by other online geologic reports, as of July 2008. For additional information, please visit the KGS Geologic Maps of Kansas Page. As a part of these investigations, ..., For additional information, please visit the KGS Geologic Maps of Kansas Page. Location and Extent of Area. Wallace County is in the High Plains of northwestern Kansas, in the first tier of counties east of the Colorado border, and in the third tier of counties south of the Nebraska border (Fig. 1). The county is about 30 miles square, with …, Montgomery counties, Kansas: M.S. thesis, Department of Geology, University of Kansas, 54 p. (Also available as Kansas Geological Survey, Open-file Report 62-4.) Heckel, P. H., 1991, Lost Branch Formation and revision of upper Desmoinesian stratigraphy along midcontinent Pennsylvanian outcrop belt: Kansas Geological Survey, Geology Series 4, 67 p., Geologic maps can be used to identify geologic hazards, locate natural resources, and facilitate land-use planning. The USGS makes many kinds of geologic maps. These maps are available as single or multiple sheets, many of which are folded and placed in a paper jacket. Other geologic maps are enclosed in envelopes bound with USGS reports such ..., Geological principles state that if a fragment of rock is included, that is entirely surrounded by rock, it must be older than the surrounding rock. This is because it had to be present for the rock to form around it., A map of the Texas fault lines shows where the most and least risk areas in the state are located. The Earthquake Hazards Program, part of the U.S. Geological Survey, shows the fault lines and seismic activity risk for all of the states in ..., USGS topographic maps fall into three primary product categories: 1. The Historical Topographic Map Collection (HTMC) is the set of scanned images of USGS topographic quadrangle maps originally published as paper documents in the period 1884-2006. Visit Historical Topographic Maps - Preserving the Past for more information., Fig. 1--Index map of Kansas showing area described in this report and areas covered by other online geologic reports, as of Dec. 2007. For additional information, please visit the KGS Geologic Maps of Kansas Page. Ground water is one of the principal mineral resources of Logan County, as well as of most of western Kansas., Figure 2--Generalized geologic map of Kansas. This circular gives a brief overview of fossils, fossilization, and geologic time; discusses the general characteristics of some of the state's common invertebrate fossils; and provides some basic information about collecting fossils in Kansas. , Geologic maps; Topographic maps; Color elevation map of Kansas; Public Land Survey System; ... In Kansas, township lines are numbered 1S to 35S, starting at the Nebraska border. "S" stands for south. (The Kansas-Nebraska border is the dividing line between south and north township lines.), Figure 1--Index map of Kansas showing area described in this report and areas covered by other online geologic reports, as of Oct. 2008. For additional information, please visit the KGS Geologic Maps of Kansas Page. A test-drilling program was started in northwestern Kansas in 1952. Data obtained from this program are included in this report., Feb 8, 2017 · In 1935, a preliminary announcement on results of ground-water studies by Theis and others was released. In 1937, the areal geology was delineated on a geologic map of Kansas (Moore and Landes, 1937) having a scale of about 8 miles to the inch (1:500000), issued by the State Geological Survey. , For a complete layered bedrock geologic map see Minnesota Geological Survey Miscellaneous Maps S-21 and S-22 (from Boerboom, 2020, fig. 3). ... runs along the shore of Lake Superior and continues south along the Minnesota–Wisconsin border and southwest to Kansas. Paleoproterozoic rocks. Figure 1. An example of banded iron formation (or …, Geologic maps, the principal source of information about geology and natural resources at or near the surface, are essential for evaluating natural resources, making economic decisions, …, Copies of the Pawnee County map are available from the Kansas Geological Survey at 1930 Constant Ave., Lawrence, KS 66047-3724 (phone 785-864-3965, email [email protected]) and at 4150 W. Monroe St., Wichita, KS 67209-2640 (phone 316-943-2343, email [email protected])., For additional information, please visit the KGS Geologic Maps of Kansas Page. Location and Extent of Area. Wallace County is in the High Plains of northwestern Kansas, in the first tier of counties east of the Colorado border, and in the third tier of counties south of the Nebraska border (Fig. 1). The county is about 30 miles square, with …, Bedrock geology with geopolitical and hydrologic information, such as political boundaries, quadrangle boundaries, hydrologic units, and water-well data. Info. Bedrock geologic map of the 15' Sleetmute A-2 quadrangle, southwestern Alaska. Twelve unnamed, bedrock stratigraphic units are recognized within the Sleetmute A-2 1:63,360-scale ..., This map was prepared as a collaborative effort with the Missouri Division of Geology and Land Survey, the Kansas Geological Survey, and the Nebraska Conservation …, The term Dakota Group was recognized in this sense by Moore (1935a) and was so used on the Geologic Map of Kansas prepared by Moore and Landes in 1937. According to Waite (1942), at a conference of Kansas Survey geologists in January 1941, it was decided that the term Dakota Group should include all strata from the base of the Cheyenne ... , For additional information, please visit the KGS Geologic Maps of Kansas Page. Previous Investigations. In 1897 Haworth discussed the physiography of western Kansas, and Williston (1897) described the stratigraphy of the Niobrara Formation of western Kansas. Darton (1905) included in his report a discussion of water wells in …, The purpose of this investigation was to create a member level geologic map of the channel deposits and surrounding rock units in the ... vol. 53, no. 5, p. 1058-1074. Kansas Geological Survey, 1991, Geologic map of Kansas. Leonard, K.W., 1991, A log of ten cores of the Deer Creek Limestone, Calhoun Shale, Topeka Limestone, and Hamilton ..., Map Locator Tool. U.S. Forest Service Visitor Maps. State Maps. 7.5 & 15 Minute Topographic Maps. 30 x 60 Minute Topographic Maps. 1 x 2 Degree Topographic Maps. National Parks. Historical Maps., Kansas geologic map data A GIS database of geologic units and structural features in Kansas, with lithology, age, data structure, and format written and arranged just like the other states. View Show in a web browser window: Show in Google Earth or other KML viewer: ksgeol.kml (Uncompressed, 25.4M) ksgeol.kmz (Compressed, 8.6M), Upper Cretaceous deposits (Ks) along the Pacific coast correspond to the Campanian Rosario Formation. Specimens here reported were collected at Salsipuedes, 23 ..., 6 jun 2009 ... ... map provides a time frame for Chase county bedrock, greater detail is needed. A Kansas geologic map taken from the Kansas Geological Survey ...