16.1: Introduction to Geological Maps and Cross-sections
WEBWhat Is a Geologic Cross-section? Remember that a geologic map will be seen in map-view. However, geologists use information about rocks that are exposed at the surface to visualize the unseen rocks beneath the surface, enabling them …
Cross section (geology) - Wikipedia
WEBCross sections are made by interpreting and extrapolating a broad range of information about a region's geological characteristics. This can include data from the surface, subsurface, and existing geologic maps.
The National Geologic Map Database (NGMDB) | U.S. Geological …
WEBApr 15, 2018 · The National Geologic Map Database (NGMDB) is the primary source for geologic map and related geoscience information of the United States. It is a Congressionally-mandated function under the Geologic Mapping Act and has been a strong example of State-Federal cooperation since its inception in 1995.
Chapter 9: Geologic Structures and Mapping – The Story of Earth: …
WEBVisualize geologic structures in maps and cross-sections; Identify geologic structures on a geologic map; Learn how to read a geologic map; Some of the maps in this chapter can be printed on poster paper from large PDF files found here (opens in a new tab).
12.6: Geologic Maps and Cross-Sections - Geosciences LibreTexts
WEBSep 11, 2019 · You will examine a geologic map for an area in Georgia and construct a geologic cross-section. A geologic cross-section shows geologic features from the side view. They are similar to the topographic profiles that you have already created, but include additional information about the rocks present.
3.5: Geologic Maps and Cross Sections - Geosciences LibreTexts
WEBDec 26, 2021 · Most geologic maps are accompanied by one or more vertical cross sections, which are views of what the geology would look like in an imaginary vertical plane downward from some line on the land surface. These cross sections are constructed by the geologist after the map is completed.
Making a Geologic Cross Section (video) - JoVE
WEBUsing geologic maps, cross-sections can be generated which predict the strata of the rocks sub-surface, and estimate the rock shape above ground prior to erosion. The resulting cross-section is a cutaway image much like those seen in canyon walls or road cuts.
Geological cross-sections | Geological Field Sketches and …
WEBThis chapter provides practical advice on how to create geological cross-sections through the interpretation of maps with an emphasis on recognizing the key features that reveal the orientation of boundaries and structures.
9.4 Interpreting geologic maps and cross-sections - Fiveable
WEBJul 22, 2024 · Cross-sections provide a vertical slice through Earth's crust, revealing subsurface relationships. By combining map data with structural geology principles, geologists can reconstruct the sequence of events that shaped an area over millions of years, from rock formation to deformation and erosion.
WEBA topographic map and geologic section of an area are given in Figure 3. The symbols have the following meanings: gr = granite, db = diabase, ss = sandstone, sh = shale, and ls