This record is maintained in the national geologic map database ngmdb. University of texas at austin, bureau of economic geology, miscellaneous map mm39, scale 1. More information about viewing, downloading, and printing report files can be found here. The materials listed below represent current guidelines, which should be closely followed during the process of geologic mapping in order to maintain consistency between and timeliness of published products.
Geologic history as it relates to modern vegetation patterns of south central texas. If you want to share these maps with others please link to this page. Arizona geological survey digital geologic maps azgs. Geologic map of the new braunfels, texas, 30x60 minute quadrangle. Pdf detailed geologic maps are the foundation for any geologic, hydrogeologic, and engineering studies. A map of texas cities that includes interstates, us highways and state routes by geology. Download the latest version of adobe reader, free of charge. The purpose of this map is to provide the national park service and the public with an updated digital geologic map of big bend national park bbnp. Capable of yielding sma quantities of fresh water ts spa r ta sand fine sand and sandy cloy. Original clearfilm positives of these sheets were provided by the texas bureau of economic geology. The maps on this page were composed by brad cole of. The goal at that time was to transfer 38 hardcopy map sheets from the geologic atlas of texas to an online site. The state geologic map compilation sgmc geodatabase of the.
Geologic maps make use of specific map symbols to relate important information. Users can navigate the map with the clickandpoint tool, or by using the location search tool to find common geographic place names, latitudelongitude coordinates, and other areas of interest. The symbol for a geologic unit, labeled on the map and in the explanation, begins. Illustrations of common structure symbols and faultfold relations are on pages 2 and 3. These maps are property of and may not be used beyond. The map above is a landsat satellite image of texas with county boundaries superimposed. Product description page national geologic map database.
Lecture 3 introduces you to the art of locating field data, geologic. For best results viewing and printing pdf documents, it is recommended that you download the documents to your computer and open them with adobe reader. We are an official earth science information center for the u. Learn geologic mapping with free interactive flashcards. Check out the national geologic map database ngmdb, which is the national archive of these maps and related geoscience reports. The new map viewer is an interactive webbased tool that allows a broad range of users to explore the geology of the lone star state at a scale of 1. You should refer to this map frequently as you read the fol. Printed on a single sheet and folded to glove compartment size, each has a stratigraphic column by state, mileage charts, and may depict spots of interest. If you print the map pages from a browser the maps will be cut off. Suitable for display, classroom, or reference use, this map provides an excellent overview of our states geology for students or laypeople.
New mexicos geologic mapping program new mexico bureau of. Since the 1800s, the usgs and its partners, the state geological surveys, have been producing high quality, standardized geologic maps of the nation. This chapter treats the geology of texas chronologically, mainly because it enables us to take advantage of plate tectonics theory as we examine the autobiography of texas. Spencer brings over 45 years of teaching experience to his stepbystep approach. A gis database of geologic units and structural features in texas, with lithology, age, data structure, and format written and arranged just like the other states. Any file name beginning with gat indicates a map that was clipped from the geologic atlas of texas scale 1. Jun 02, 2015 the new map viewer is an interactive webbased tool that allows a broad range of users to explore the geology of the lone star state at a scale of 1. Interactive geologic map of texas now available online. The oldest rocks are in the western part of the map area in the states of nuevo leon and tamaulipas, mexico, and include mostly cretaceous and jurassic marine limestone, sandstone, shale, and evaporite units exposed in a series of north to northwesttrending ranges. The map was digitally distorted in some spots to align the roads with the more accurate modern map but there is still some distortions and alignment is not perfect. Poster version, geology of texas map downloadable pdf. The geologic map report of maxwell and others 1967 provides a fully comprehensive account of the important volcanic, structural, geomorphological, and paleontological features that define bbnp. Map manuscript pdf 1 mb map references pdf 1 mb database design pdf 1 mb geospatial files. Geologic maps serves all of those disciplines in addition to students in map interpretation and field geology courses.
Map reproduces the topology of original soviet maps and cross sections. Choose from 325 different sets of geologic mapping flashcards on quizlet. This dataset was developed to provide a digital geologic map database of the barnes 1992 geologic map of texas. Prices subject to change and do not include any shipping or crating charges that may apply size 36 x 28. Each state is covered by a separate map and the size of the maps vary texas is 26 megabytes so give them time to load when you select a state. Preliminary integrated geologic map databases for the united states. Sparrow model results of longterm meanannual total nitrogen and. For clarifications or additions, please contact the usgs map coordinator. Geologic map precambrian of texas paleozoic more than 600 million years ago 600 to 240 million years ago pennsylvanian permian mesozoic 240 to 65 million years ago jurassic, triassic cretaceous gulf cretaceous comanche cenozoic beginning 65 million years ago eocene quaternary igneous pliocene, miocene. The site geologic map must illustrate the outcrop of surface geologic units and the location and extent of all geologic and manmade features. Maps texas gis geologic map project university of texas. The state geologic map compilation sgmc geodatabase of. At our socorro office, we stock most of the usgs geologic maps that relate to new mexico. The front piece for this chapter is the geologic map of texas.
Check out the geologic atlas of texas, san antonio sheet revised 1982. Frequently these maps permit interpretations of features that are too large to be studied in single rock exposures and often are the ideal means of presenting large amount of information to other persons. Scan gqseries map pamphlets and convert to pdf format. Users can navigate the map with a simple clickandpoint tool, or by using the location search tool to find common geographic place names, latitudelongitude coordinates and other areas of. A map needs to show a line representing the axial line and axial plane, a symbol to indicate the type of fold, an arrow to show the direction in which the axis is plunging and a number to show the plunge angle. We have a more detailed satellite image of texas without county boundaries. He follows that with a presentation of geologic map preparation, giving map interpreters an appreciation of the level of precision represented by the data on geologic maps. Interactive map lets you find dinosaur tracks, extinct.
A collection of geospatial files, map images, publication documentation, and informational resources in support of the geologic map of north america. Geologic map geology from geologic atlas of texas bureau of economic geo logy, 1964 and 1966 tqc twi qal. The map should specifically locate natural and manmade features listed in the geologic assessment table as described below and any other features sensitive to pollution. Geologic map precambrian of texas paleozoic more than 600 million years ago 600 to 240 million years ago pennsylvanian permian mesozoic 240 to 65 million years ago. As the gulf and atlantic continued to spread wider, oceanic. Geology of texas the bureau of economic geology, established in 1909 as the successor to the texas geological survey and the texas mineral surve y, is a research entity of the university of texas at austin.
Geology of tarrant county, texas the source geological map used is geologic atlas of texas, dallas sheet bureau of economic geology, 1987. These were scanned, georeferenced, digitized and attributed, edge matched, and combined into a single statewide database. The ngmdb is a congressionally mandated national archive of geoscience maps, reports, and stratigraphic information, developed according to standards defined by the cooperators, i. Interactive map lets you find dinosaur tracks, extinct volcanoes. Explore the geology beneath your feet using this 3rd generation mapping app from usgs. Geological survey national geologic map database check out the geologic atlas of texas, san antonio sheet revised 1982.
The geologic map of texas was originally printed as. Geologic atlas of texas sherman sheet descriptive booklet pdf file 260k geologic atlas of texas abilene sheet descriptive booklet pdf file 517k the geology of tarrant county by w. Tarrant county, texas geological map in pdf form 5. Home catalog lexicon mapview new mapping standards comments. Originally released in april 2009, this map was updated in 2015. A map of texas counties with county seats and a satellite image of texas with county outlines. The state geologic map compilation sgmc geodatabase of the conterminous united states org10. Geologic maps are available through the beg publications store. Geologic map of the tilden quadrangle, mcmullen county, texas. This data set was prepared in cooperation with the texas bureau of economic geology. The interactive map viewer allows users to turn data layers on or off, identify layers of interest and retrieve detailed information about each geologic formation, such as the feature name, geologic age and feature description. He guides readers through the basics of map projections and content before discussing map interpretation using exercises taken from published geologic maps.
Lecture 4 describes and illustrates to you the practical usage of the compass, clinometer and a hand level and how to use them in determining various attitude data e. Introduction to geological mapping lecture 1 3 field geology when rocks and rock materials are investigated in their natural environment and in their natural relations to one another, the study is called field geology. The geologic map of texas the front piece for this chapter is the geologic map of texas. Weka dur is the largest gold occurrence in afghanistan. Texas is a large state with varied geology, ranging from the simple dippingstrata structure of the gulf coastal plain, northcentral texas, and the panhandle, to the complicated geological structure of the llano uplift l. Geologic map of south central texas and adjacent areas bureau of economic geology, university of texas, 1992. Part or all of this report is presented in portable document format pdf.
Gmna resources usgs national geologic map database. National geologic map database product description page. Researchers involved with bureau geologic mapping projects are eddie collins, brent elliott, jeff paine, chock woodruff, tiffany caudle, and john andrews. The geologic map of texas was originally printed as four 1. You should refer to this map frequently as you read the fol lowing sections, and especially when.
Lecture 3 introduces you to the art of locating field data, geologic features and their subsequent plotting in a base map. Tqc tqc qal tqc qal 5 qal twi qal qal twi 30 00 52 explanation qal alluvium clay and silt, some fine sand, and minor amounts of gravel. For better viewing on mobile devices, visit the usgs geologic atlas of texas gat viewer. Geologic map and geologic hazards of the three points 7. Geologic map of the weka dur gold deposit, badakhshan province, afghanistan, modified from the 1967 original map compilation of m.
Pdf documents opened from your browser may not display or print as intended. Pdf file 260k geologic atlas of texas abilene sheet descriptive booklet pdf file 517k the geology of tarrant county by w. Geological survey allows users to explore the surface geology of texas and bordering regions of new mexico, oklahoma, and arkansas. Usgs pocket texas geology usgs texas water science center. The gmna was converted to a gis database and published as usgs ds. It explains how geologic notes and descriptions are taken and entered in the notebooks, and illustrates how specimens are collected and systematically labelled while in the field.
Geologic units become younger from west to east across the map area. Interactive map of the surface geology of texas american. A national digital geologic map database is essential in interpreting other datasets that support numerous types of national. Usgs geologic maps in new mexico new mexico bureau of. Ngmdb product description page national geologic map. Geologic map of big bend national park, texas usgs. The tiff file was then opened in adobe photoshop, converted. Gis data may also be available for many of these map products either by download or contacting us below. Historical geologists and geomorphologists gain valuable insight from the clues that maps provide about the natural processes that shape an area. Geological survey and work cooperatively to provide information to the public. Map published by the university of texas at austin, bureau of economic geology. About this product this concise and colorful summary of the geology of texas consists of a postersized, fourcolor map. Introduction to geological mapping lecture 1 2 data.1220 33 1498 1218 1497 943 66 975 945 688 1120 98 833 1091 848 551 557 1500 127 756 1583 432 1588 1421 1336 393 691 853 236 391 899 988 1101 451 766 1409 1307 407 1173 770