Q4 Lesson 1 Flashcards
downward movement of soil, rocks, and earth materials along a slope
Landslide
can be triggered by certain geologic conditions and hazards such as typhoons, earthquakes, and volcanic eruptions
Landslide
can be caused by continuous heavy rains or shaking due to the earthquake
Landslide
Type of Landslide
Creep
Slump
Rock and debris slide
Rockfall
Debris flow
Mudflow
slow or gradual movement of soil
Creep
downslope flow of soft and unconsolidated materials
Slump
slow to rapid downslope movement of unconsolidated and rock debris
Rock and debris slide
free-falling movement of massive rocks from a cliff or steep slopes
Rockfall
rapid flow of debris and other rock materials
Debris flow
characterized by a flowing mass of mud along the flank
Mudflow
geologic formations caused by exposure to water, erosion, and ground movement
Sinkholes
can be a result of drilling, mining, construction, changing of the land surface, broken water or drain pipes, improperly compacted soil after excavation work, or even heavy traffic that creates too much pressure
Sinkholes
occur at the ground surface where bedrock is exposed or is very shallow, and result from rainfall and surface water percolating through the bedrock’s joints and fractures
Dissolution sinkholes
these sinkholes start with something permeable covering the sinkhole while also containing a good deal of sand
Cover-subsidence sinkholes
-they occur where the covering sediments contain a significant amount of clay
Cover-collapse sinkholes
over time, surface drainage, erosion, and deposition of sinkhole into a shallower bowl-shaped depression
Cover-collapse sinkholes
Types of Sinkholes
Dissolution sinkholes
Cover-subsidence sinkholes
Cover-collapse sinkholes
