Geology

Surface Geology Map of Dallas County
This map was compiled in 1965 by the Dallas Geological Society showing local geology. Courtesy of Kevin Woller. Geology digitized by Kevin Woller, University of Texas at Dallas.

Geologic Cross-Section of North Central Texas

Cretaceous Formations of North Central Texas

Surface Geology of Dallas and Tarrant Counties, Texas by Phil Scoggins of The Dallas Paleontological Society.

Quaternary Stream Terraces of Dallas County, Texas  The terraces are composed of approximately 32% of the area of Dallas county, and exhibit significantly different characteristics from the regions of weathered bedrock, which is mostly the Austin Chalk and Eagle Ford Shale.

Local Area Cretaceous Cross Section
An axial cross section highlighting sloping cretaceous rocks underlying North Central Texas on top of the Paleozoic basement.

Selected DFW Fossil Hunting Sites
A few local fossil hunting sites in the Metroplex with maps and links to Yahoo! Mapblaster for precise locating. The sites at last check were on public property.

The Diminutive Cretaceous Fossils of Rufe Snow  Ammonites, crabs and other small crustaceans, parts of brittle stars and asteroid starfishes, an echinoid, shark teeth and bony fish vertebrae, pelecypods and gastropods make up the more common fossils.

The Pawpawsaurus Story
Along the shores of a seaway, in the area which is now north central Texas, lived one of the most primitive known of the "nodosaurid" dinosaurs. It is called "Pawpawsaurus".

The Balcones Escarpment
The escarpment marks the break between two physiographic divisions of North America: the Great Plains and the Coastal Plains. In Texas this break is denoted by the change from Hill Country/Edwards Plateau uplands on the west to the Blackland Prairie on the east. This site contains the full, on-line version.

Photos of Dinosaur Footprints at Glen Rose by the Tarleton Geological Society. More controversial information regarding the dinosaur footprints. Texas Parks and Wildlife dinosaur page.

Soils

Dallas County Soil Map
A soil-type distribution map for Dallas County. See this link for a page describing Houston Black, the Texas State Soil.

Hydrology

Edwards-Trinity Aquifer System
The aquifer system consists of three complexly interrelated aquifers-the Edwards-Trinity, the Edwards, and the Trinity aquifers. This hydrogeological resource is part of the USGS Ground Water Atlas of the United States.

Reservoir Conditions for River Basins in Texas
This interactive page allows you to build a custom summary table or a custom sequence of graphical or tabular data for one or more stations of real-time hydrologic data for about 520 sites in Texas. Data and graphs can be obtained for all data collected during the last 1 to 4 hours at stations by satellite telemetry.

Texas WaterNet
Texas Water Resources Institute Research, Technology Transfer, and Training in Water Resources Areas.

Current Hydrological Data for North Texas Lakes
Texas River Recreation Advisory (Float-Cast); River Flood Warnings; River Flood Statement; River Statement; River and Lake Stages.

The Hydrodynamics of the Woodbine Aquifer, Collin County, Texas
The water of the Woodbine aquifer supplies water for agriculture and for urban and suburban development in Collin County, Texas. How has this use altered the aquifer over the past twenty years? These materials were developed by Lance Christian, Department of Geography, University of Texas at Austin, 1998.

Ground Water Reports of the Texas Water Development Board: Cretaceous formations of North Central Texas | Ground-Water Availability in Texas | Major and Minor Aquifers of Texas | Updated Evaluation of Water Resources in Part of North-Central Texas, 1990-1999 | Evaluation of Water Resources in Parts of the Rolling Plains Region of North Central Texas .

Water for Texas - 2002 2002 State Water Plan
If you want a copy of the document please contact Ann Omoegbele via email or phone 512/936-0814. Only one copy per customer, please.

Texas Through Time
A Microsoft PowerPoint Presentation of Plate Tectonics with Texas as the focal point, The Making of Texas. Sorry Ags, Texas is burnt orange.

Cretaceous Geology of Texas
Cretaceous stratigraphy of Texas with cross sections.

Learning About Texas Fossils
The state, having about 600 million years of geologic history, has fossils ranging in size from microscopic creatures to giant dinosaurs. With the distance learning capabilities of the Internet, Texas students and teachers can use the study of fossils as a thematic, interdisciplinary science-based unit for all age levels of students.

"GEOLOGY" The Handbook of Texas Online.
Synopsis of a gazillion years of Texas geology.

Texas Geology Streaming Video (RealPlayer)
Local, regional and state geology explained by Devin Denny on streaming video. Sit back and watch.

Prehistoric Texas
Geobop's North America, Prehistoric America (Paleozoo) site for Texas.

Seismicity of Texas
Earthquake locations are from the USGS/NEIC PDE catalog. Earthquakes in Texas

Minor aquifers in Texas
In Texas, a minor aquifer is defined as one that supplies large quantities of water in small areas or small quantities of water in large areas.

Dinosaurs of Texas
A systematic reference of dinosaurs in Texas by geologic time by Jon Baskin, TAMU.

River Systems of North Central Texas

Elm Fork Trinity River Home Page
This home page was developed by the students and faculty in the Institute of Applied Sciences at the University of North Texas, in the graduate environmental science program.

Watershed Reports in North Central Texas by the EPA - listed by watershed name: Cedar, Chambers, Denton, East Fork Trinity, Elm Fork Trinity, Lower West Fork Trinity, Middle Brazos Lake Whitney, Middle Brazos Palo Pinto, North Bosque, Richland, Upper Sabine, Upper Trinity, Upper West Fork Trinity

Trinity River Basin Water Quality and (Data Publications from the USGS)
The Trinity River basin NAWQA study project staff manage the exchange of information about water-quality issues of regional and local interest; the identification of sources of data and information; assistance in the design and scope of project products; and the review of project planning documents and reports.

Reflections on the Trinity
This publication addresses and supports the goals and ideas of the Trinity River COMMON VISION Program. (current issue of the newsletter)

Landforms

Texas Geography
Geography and geophysical links from TNRIS Texas Natural Resource Information System, the state's clearing house for natural resources information and data.

Physiography of Texas
Each physiographic province is distinguished by characteristic geologic structure, rock and soil types, vegetation, and climate.

The Physical State of Texas
The Texas Almanac.

North-Central Texas Prairies
A geographic synopsis of prairie lands in western North Central Texas.

The GEOLOGIC STORY of The GREAT PLAINS
A geography and history of the great plains from Mexico and Texas to Canada.

Trinity River Trek
The Trinity RiverTrek is a virtual guide through the Geography of the Trinity River Corridor through North Central Texas. It provides point and click access to images, movies, data, and information links along the Trinity River Corridor and in adjacent jurisdictions.

South Central Major Land Resource Areas
The USDA Natural Resources Conservation Service provides leadership in a partnership effort to help people conserve, maintain, and improve our natural resources and environment for Texas with detailed land analysis of the region.

Maps

NCTCOG's Digital Atlas for North Central Texas
The Digital Atlas for the North Central Texas region developed to provide an interactive, on-line street map reference guide of the NCT area.

Create A North Central Texas City Map
Create a printable street map by selecting a City or County in North Central Texas.

State Atlas of Texas
Color landform atlas with additional maps for natural regions, aquifers, environmental regions, etc. Sponsored by the EPA in conjunction with TNRCC and TPWD.

NCTCOG Bike Trail Map Atlas
The Interactive Digital Bike Trail Atlas for North Central Texas.

TXDOT County Maps Graphic Interface
Graphical interface to the Texas Department of Transportation County Maps. Select your county, click on an region or city, and 'zoom in'. Select by county or place (such as lake, university, etc.)

Texas Map Collection
Large collection of Texas Maps, Department of Information Resources, State of Texas.

Texas - Detailed Maps
Texas Detailed Maps of the Perry-Castañeda Library Map Collection, The University of Texas at Austin.

More Texas Maps
Texas Detailed Maps collection from all places in Norway!!.

USGS Geologic Map Database
Find information about maps and related data for: geology, hazards, earth resources, geophysics, geochemistry, geochronology, paleontology, and marine geology.

Encarta Terra Server
The Microsoft TerraServer Web site is one of the world's largest online databases, providing free public access to a vast data store of maps and aerial photographs of the United States.

Topozone
The TopoZone is the Web's center for recreational and professional topographic map users. We've worked with the USGS to create the Web's first interactive topo map of the entire United States.

Maptech Mapserver
Free Maptech map server creates on-line topo, nautical, aero maps for the location of your choice.

TIGER Map Service
Create maps on-the-fly from a special binary version of TIGER/94 data. Technical details are available, as well as instructions on how to include TMS maps in your HTML web pages and CGI programs.

Virtual Texas Fossil Exhibit
Scratching the Surface Again, a virtual visit to the museum to learn about Texas fossils. Sponsored by the Texas Memorial Museum at UT Austin.

TNRIS Info Services - WWW
The Texas Natural Resources Information System (TNRIS) is the state's clearinghouse and referral center for natural resources data. Its primary purpose is to make data available to data users quickly and reliably.

The Bureau of Economic Geology
The Bureau of Economic Geology is a major contract-based research unit of UT Austin. Bureau research is being conducted in advanced geotechnology; oil and gas discovery and recovery optimization; geophysics; environmental, waste-disposal, and hydrogeologic studies; coastal processes; and coal and mineral resources.

UTD Geosciences Program
University of Texas at Dallas Geology Programs. UTD's huge, comprehensive listing of GIS and Remote Sensing Resources on the Internet.

SMU Dept. of Geology
(DOGS) Department of Geology, SMU.

Univ. of Dallas Bruton Center
GI Science at UT-Dallas.

Fort Worth Geological Society
Dallas Geological Society


UNT Department of Geography
The Department of Geography is engaged in research projects ranging from coastal geomorphology and groundwater hydrology to medical geography, world cities, economic diversification and geographic information systems/remote sensing.

TCU Geology and ENSC Home Page
TCU Geology Department and Center for Remote Sensing.

US Geological Survey in Texas
U.S. Geological Survey in Texas information.

North Texas Skywatch Home Page
Local Astronomical Events, check out this site for "Star Party" events sponsored by the group.

Sky above 32°47'8"N 96°47'36"W
Welcome to Your Sky, the interactive planetarium of the Web. You can produce maps in the interactive forms for any time and date, viewpoint, and observing location. This is my part of the sky in North Central Texas. Enter your lat and long to find yours.

Texas Astronomical Society of Dallas
The Society was chartered in 1955 to promote the study of astronomy and related fields and to pursue observation and construction of instruments as a hobby.

Geologic Time Scale
Illustrated Glossary of Geologic Terms
Minerals By Name
Virtual Geology Classroom

Earth Science Resources: Geology, Oceanography, Astronomy & Ecology
Wow! It's huge.

Earth Science World
Earth Science World is the place to explore your interests in the Earth and in science.

Earth and Moon Viewer
You can view either a map of the Earth showing the day and night regions at this moment, or view the Earth from the Sun, the Moon, the night side of the Earth, above any location on the planet specified by latitude, longitude and altitude, from a satellite in Earth orbit, or above various cities around the globe.

US Geological Survey
As the Nation's largest earth science research and information agency, the USGS maintains a long tradition of providing "Earth Science in the Public Service."

Zoom Dinosaurs
An educational "all-you-ever-wanted-to-know" about dinosaurs page, sponsored by Disney. An excellent resource.

National Assoc. of Geology Teachers

Internet Geoscience Links

Society for Sedimentary Geology (SEPM)

Society of Petroleum Engineers

Geological Society of America

Mineralogy & Petrology Research

GeoScience K-12 Resources

The Earthnet Info Server

Oil Resources on the Web