Syncline - Wikipedia
In structural geology, a syncline is a fold with younger layers closer to the center of the structure, whereas an anticline is the inverse of a syncline. A synclinorium (plural synclinoriums or synclinoria) is a large syncline with superimposed smaller folds. [1]
Basics--Geologic Map Symbols Table - Wenatchee Valley College
2011年7月10日 · Strike and dip are a way of representing the three-dimensional orientation of a planar surface on a two-dimensional map. The strike is the compass direction of a horizontal line on the plane. All the horizontal lines on a plane are parallel, so they all have the same characteristic compass direction.
Folds – Physical Geology Laboratory
Syncline. A syncline is a fold that is concave: it forms a “U” shape. “S” is the first letter of “syncline,” and a syncline looks like a Smile. Figure 23. Syncline showing fold hinge and strike and dip symbols. Younger layers appear in the center of synclines in map view.
Key structures that are commonly shown include (1) bedding attitudes, (2) anticlines, (3) synclines, and (4) faults. A bedding attitude is defined as the strike and dip of a bed. Strike is the direction of a line produced by the intersection of an imaginary horizontal plane with …
Overview of Folds, Faults, and Unconformities
You can tell an anticline from a syncline by looking for strike and dip symbols, looking for the map symbols for those types of folds, or simply noticing whether the beds are older toward the centre of the fault (an anticline), or going away from the axis (a syncline).
FGDC Digital Cartographic Standard for Geologic Map …
2008年5月16日 · In certain situations, a symbol or its usage might need to be modified in order to better represent a particular feature on a geologic map or cross section. This standard allows the use of any symbol that doesn't conflict with others in the standard, provided that it is clearly explained on the map and in the database.
Part B - Mesa Community College
A block diagram of a syncline. The numbers represent the relative ages of the map units (lower numbers are older). Strike and dip symbols represent the orientation of the map units. A structure symbol is shown along the axial trace.
NMBGMR Draft Geologic Data Model - v. 1.0.4 - New Mexico …
2015年2月5日 · See the NMBGMR Symbol set (3.7 Mb PDF) for details on how our standard symbology is constructed. If the fault measurement is for a minor fold, set MappedFeat="no and change symbology as appropriate.
Basics--Geologic Structures - Wenatchee Valley College
2013年9月11日 · In terms of geologic structures, the up folds are called anticlines and the down folds are called synclines. In block diagrams like those shown below, the top of the block is the horizontal surface of the earth, the map view. The other two visible sides of the box are cross-sections, vertical slices through the crust.
Geologic maps – Historical Geology
Symbols showing the measured orientation of rock structures, such as bedding, foliation, and faults. Other symbols showing the interpreted structure of the region, such as anticlines, synclines, normal faults, thrust faults, and transform faults.