Topographical Maps
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卡片预览 (16 张)
Normal fault
Where the hanging wall has slipped down in relation to the foot wall
Heave
Horizontal movement of the rock layer along the fault line
Up throw
Upwards vertical movement of the rock layers along the fault line
Dipslip
The actual movement of rock layers along the fault line
Foot wall
Rock layer below the fault line
Strike
Geographical direction of rock outcrop often represented as a compass bearing
Anticline
Rock layers have folded downwards from a crest
Throw
Vertical movement of rock layers along the fault line
Legend
Key to symbols on a map
Unconformity
Two periods of deposition separated by a period of no deposition
Hanging wall
Rock layer above the fault line
Syncline
Rock layers have been folded inwards to a central point
Igneous
Cooled below: Gabbro Diorite Dolerite Granite Above ground: Basalt Dacite Toscanite Rhyolite
Sedimentary
Sandstone Conglomerate Shale Greywacke Mudstone Limestone Coal Siltstone Sand Alluvium Soil
Metamorphic
Quartzite Slate Gneiss Phyllite Marble Schist
Dip
Angle of inclination of the rock layer often represented as symbols