FORMELFLATE
FORMELLIN
| Clasification of landforms is based on the main mechanism of their formation (genesis).
Landscape forms are drawn as polygon and/or line objects. The list contain only the types of forms that are mapped
and interpreted in Norwegian waters. For full list of landforms defined in SOSI catalogue, read
Løsmassegeologi (Superficial geology)
|
| Symbol | Name | Definition/description | SOSI-code |
|---|---|---|---|
| Polygon FORMELFLATE | |||
|
Drumlin | An elongated hill, streamlined in the direction of ice flow and composed largely of glacial deposits. | 3 |
|
Ice-marginal moraine | Moraine ridge formed along an ice margin. Includes end, lateral and terminal moraines. | 962 |
|
Ice marginal deposit | Ridge consisting of till and glaciofluvial deposits along an ice margin. | 963 |
|
Morene ridge | Ridge shaped moraine deposit. | 964 |
|
Grounding zone wedge | Wedge-shaped ridge that is formed at the front of a glacier during periods of standstill or minor advances of a glacier. | 970 |
|
Area with corrugation ridges | An area with a series of small elongate ridges, produced at tidally influenced ice sheets margin or floating icebergs grounding line. | 971 |
|
Glacitectonic hill | Hills and ridges formed by glacier that transports and leaves behind big blocks or slabs of the seabed. | 911 |
|
Glacitectonic hole | Hole (depression) formed by moving glacier that and rips off and removes of big, typically sheet-formed slabs from the seabed. | 913 |
|
Dead ice landscape | Landscape with irregular hills and holes formed by melting of the stagnant ice. | 8 |
|
Grounded iceberg depression | Depression in the seabed formed by a grounded iceberg that stayed immobile. | 910 |
|
Slide block | Sediment packages that have been displaced during a landslide event and carried down a slope by gravity. Such landslide mobilized sediment blocks occur mainly under water, but can also be found in permafrost areas on land. | 966 |
|
Landslide fan | Fan-shaped depositional area of a slide. | 301 |
|
Slide area | Landscape formed by a landslide; can include slide hollow, slide run and slide fan. | 951 |
|
Slide, burried | Landslide burried under younger sediments (paleoslide). | 951 |
|
Area with slide deposits, unspecified | Area with uneven surface due to unspecified slide deposits on the seabed. | 40 |
|
Area with slide deposits from rockslide | Area with uneven surface due to slide deposits from rockslide. | 41 |
|
Area with slide deposits from landslide | Area with uneven surface due to slide deposits from landslide. | 42 |
|
Submarine fan | Fan-shaped depositional zone commonly found in the ocean at the foot of the continental slope. | 44 |
|
Ridge, unspecified | Ridges of unspecified origin. | 965 |
|
Area with ridges | Area with ridges of unspecified origin. | 960 |
|
Sediment wave field | Area with sediment waves. | 959 |
|
Canyon | Narrow valley with steep sides, formed by erosion in bedrock or consolidated sediments by a river or a subaquatic/submarine stream. | 350 |
|
Dredging area | Area where surface of the seabed has been changed by dredging. | 955 |
|
Dumping site (subaqueous) | Dumping site (subaqueous) | 956 |
|
Sand/gravel pit (subaqueous) | Sand/gravel pit (subaqueous) | 957 |
|
Fill/Embankment (subaqueous) | Fill/Embankment (subaqueous) | 958 |
|
Wreck | Wreck | 907 |
| Line FORMELLIN | |||
|
Drumlin | An elongated hill, streamlined in the direction of ice flow and composed largely of glacial deposits. | 1 |
|
Drumlin-like form | Unclear elongated landform, streamlined in the direction of ice flow. | 2 |
|
Ice-marginal moraine | Moraine ridge formed along an ice margin. Includes end, lateral and terminal moraines. | 3 |
|
Recessional moraine | Moraine ridge deposited at the ice margin during av small re-advance or standstill of the ice margin during general ice retreat. | 8 |
|
Morene ridge | Ridge-shaped moraine deposit. | 9 |
|
Crevasse-fill ridge | Moraine ridge formed subglacially by sqeezing of till into basal crevasses. Related to stagnant ice. | 7 |
|
Parallel ridges and grooves on the surface | Elongated parallel ridges and grooves on a surface. Ridges and grooves are oriented parallel to the direction of former ice movement. Low relief and little width in relation to length. | 5 |
|
Ridge, unspecified | Clear ridge of unspecified origin on the seabed. | 920 |
|
Terrace edge, glaciogenic | Steep slope marking the edge of a terrace made up of sorted sediment; formed in a glacial environment. | 52 |
|
Glaciotectonic escarpment | Steep slope formed where a glacier has removed a slab of the seabed. | 53 |
|
Iceberg ploughmark | Elongated scour formed by the movement of a grounded iceberg in the sea or a lake. | 44 |
|
Esker (glaciofluvial ridge) | Elongate sinuous ridge of glaciofluvial sediment deposited in ice-walled meltwater channels or sub-glacial tunnels. | 12 |
|
Glacial meltwater channel | Channel formed by glaciofluvial erosion. | 21 |
|
Tunnel valley | Channels developed under an ice sheet, where meltwater under high pressure has eroded valleys into underlying sediments and/or sedimentary rocks. | 933 |
|
Landslide scarp | The back wall of a landslide; formed by different types of landslide, in both bedrock and unconsolidated sediment. | 306 |
|
Sheet-shaped landslide scarp (subaqueous) | Escarpment behind sheet-formed submarine landslide. | 309 |
|
Border of mass-wasting fan | Border of colluvial, debris flow or snow avalanche fan. Not linked to any one specific process. | 301 |
|
Plunge pool (subaqueous) | Hollow formed by landslide at the foot of a submarine slope. | 308 |
|
Landslide front (subaqueous) | Front of submarine landslide. Marks the outer margin of a submarine landslide. | 310 |
|
Rock avalanche terminus | Outer limit of rock avalanche deposit. | 305 |
|
Debris flow levee | A small ridge deposited along the margin of a debris flow track. | 312 |
|
Sediment wave | Large-scale landform on the seabed created by bottom currents. The crest of the wave usually has an orientation perpendicular to the current direction. | 923 |
|
Current channel | Channel on the seabed formed by bottom currents. | 921 |
|
Furrow, unspecified | Long narrow depressions on the seabed with unspecified origin. | 922 |
|
Ravine | V-shaped erosional channel with steep slopes, formed in sediments. | 107 |
|
Fan shape | Fan shaped deposit, mainly formed by flowing water. | 106 |
|
Terrace edge | Steep slope marking the edge of a terrace surface. | 108 |
|
Edge, unspecified | Edge in unconsolidated deposits of uncertain origin (f.ex. due to a landslide, current or a combination of processes) | 927 |
|
Channel, unspesified (subaqueous) | Channel on the seabed, origin unspecified. | 114 |
|
Bedrock crevasse (subaqueous) | Crevasse in bedrock at the seabed. | 115 |
|
Channel margin (subaqueous) | Edge of a channel, delimiting its width. | 116 |
|
Fault (subaqueous) | A fracture zone/plane where a measurable/visual displacement of the bedrock have occurred. The direction of the displacement between the fault blocks defines the type of faulting, among which are normal-, reverse-, oblique-, and transverse faulting. | 925 |
|
Crack (subaqueous) | Narrow depression in seabed formed by subsidence of the sediments due to faulting, discharge of gas from dissolution of gas hydrates, or weakened slope stability after a landslide. | 926 |
|
Cable | Anthropogenic landforms created for installing cables on the seabed. | 931 |
|
Pipeline | Anthropogenic landforms created for installing pipelines on the seabed. | 932 |
|
Anchor track | Anthropogenic landforms which are the results of anchoring naval vessels. | 933 |
| Last updated 03.01.2025 |
| NGU | Mareano |