Description: This is a point feature class used to define the approximate head scarp or initiation area of landslides using the methods described in our lidar-based protocol (Slaughter and others, 2017). Recent landslides visible in aerial/orthoimagery, from field reconnaissance, or from information from outside sources are defined with this feature class. This feature class is part of a larger landslide inventory dataset for Washington State.
Description: This is a polyline feature class used to graphically represent the head scarp and internal scarps (if present) of a landslide using the methods described in the protocol. Only scarps visible in lidar (light detection and ranging) derivative datasets are delineated with this feature class, and no scarps inferred from aerial/orthoimagery, field reconnaissance, or other techniques are included. This feature class is part of a larger landslide inventory dataset for Washington State. Polylines in this feature class are related with polygons in the landslide_deposit and scarp_and_flank feature classes by using the LANDSLIDE_ID primary key field.
Description: This is a polygon feature class used to delineate landslide deposits using the methods described in our lidar-based protocol (Slaughter and others, 2017). Only landslide deposits visible in lidar derivative datasets are delineated with this feature class, and no deposits inferred from aerial/orthoimagery, field reconnaissance, or other techniques are included. This feature class only includes information the landslide analyst can determine remotely. This feature class is part of a larger landslide inventory dataset for Washington State. Polygons in this feature class are related with polygons in the ‘Scarps and Flanks’ feature class, and lines in the ‘Scarps’ feature class, by using the LANDSLIDE_ID primary key field.
Description: A fold occurs when originally flat surfaces, such as sedimentary strata, are bent or curved as a result of tectonic movements. The trace of the "fold axis" is commonly displayed on geologic maps. The fold axis is the line that traces the top or bottom curve of the fold. Folds can be small, measuring centimeters to meters across, or can be so large they may be viewed from space.
Description: A fault is a break in the Earth’s crust. Faults can be classified into three major categories, based on how the rocks on either side of the fault move relative to each other. Some examples include: normal, reverse, and strike-slip. Different map symbols are used to mark the different types of faults.
Description: A geologic map classifies rocks and deposits into geologic map units. These units are displayed as colored or patterned areas on the map based on unique rock type, age, or depositional setting.