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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
North Africa
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
High Atlas (1)
-
-
-
Morocco
-
Moroccan Atlas Mountains
-
High Atlas (1)
-
-
-
-
West Africa
-
Nigeria
-
Niger Delta (1)
-
-
-
-
Asia
-
Brahmaputra River (1)
-
Far East
-
China
-
Yunnan China
-
Ailao Shan (1)
-
-
-
Japan (1)
-
Taiwan (1)
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Himalayas
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Garhwal Himalayas (1)
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Nanga Parbat (1)
-
-
Indian Peninsula
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Bhutan (2)
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India
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Uttarakhand India
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Garhwal Himalayas (1)
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Jammu and Kashmir
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Azad Kashmir Pakistan (1)
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Nanga Parbat (1)
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Nepal (4)
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Pakistan
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Azad Kashmir Pakistan (1)
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Indus River (1)
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Indus-Yarlung Zangbo suture zone (1)
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Main Boundary Fault (1)
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Main Central Thrust (2)
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Middle East
-
Israel (1)
-
-
Sakhalin Russian Federation
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Sakhalin (1)
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Siwalik Range (2)
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Atlantic Ocean
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North Atlantic
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Amazon Fan (1)
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Gulf of Mexico (1)
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Australasia
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Australia
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New Zealand (1)
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Canada
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Hawaii
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Europe
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Alps
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Central Europe
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Southern Europe
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Italy
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Western Europe
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Fall Line (1)
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Green River (1)
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Hunter Valley (1)
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Malay Archipelago
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New Guinea (1)
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North America
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Appalachians
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Piedmont (1)
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Basin and Range Province
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Great Basin (1)
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Great Plains (1)
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Rocky Mountains
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Canadian Rocky Mountains (1)
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Southern Rocky Mountains (1)
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U. S. Rocky Mountains
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San Juan Mountains (1)
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-
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Oceania
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Polynesia
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Hawaii
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Hawaii County Hawaii
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Hawaii Island (1)
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-
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Pacific Ocean
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East Pacific
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North Pacific
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Chile
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United States
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Atlantic Coastal Plain
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San Gabriel Mountains (3)
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Nevada
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Ohio (1)
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South Dakota (1)
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Tennessee River (1)
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Texas
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Dalhart Basin (1)
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U. S. Rocky Mountains
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Utah
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Vermont (1)
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Virginia
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Wasatch fault zone (1)
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Washington (1)
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Western U.S. (1)
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Wyoming
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Big Horn County Wyoming (1)
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-
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White River (1)
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commodities
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elements, isotopes
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carbon
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C-14 (3)
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isotope ratios (1)
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isotopes
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radioactive isotopes
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Be-10 (3)
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Be-10/Be-9 (1)
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C-14 (3)
-
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stable isotopes
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Be-10/Be-9 (1)
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-
metals
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alkaline earth metals
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beryllium
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Be-10 (3)
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Be-10/Be-9 (1)
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geochronology methods
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geologic age
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Tertiary
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upper Cenozoic (3)
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Mesozoic
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Upper Cretaceous
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Jurassic
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Precambrian
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Proterozoic
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Paleoproterozoic (1)
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orthosilicates
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zircon group
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-
-
-
Primary terms
-
absolute age (12)
-
Africa
-
North Africa
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
High Atlas (1)
-
-
-
Morocco
-
Moroccan Atlas Mountains
-
High Atlas (1)
-
-
-
-
West Africa
-
Nigeria
-
Niger Delta (1)
-
-
-
-
Asia
-
Brahmaputra River (1)
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Far East
-
China
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Yunnan China
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Ailao Shan (1)
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-
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Japan (1)
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Taiwan (1)
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Himalayas
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Garhwal Himalayas (1)
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Nanga Parbat (1)
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Indian Peninsula
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Bhutan (2)
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India
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Uttarakhand India
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Garhwal Himalayas (1)
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Jammu and Kashmir
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Azad Kashmir Pakistan (1)
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Nanga Parbat (1)
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Nepal (4)
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Pakistan
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Azad Kashmir Pakistan (1)
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Indus River (1)
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Indus-Yarlung Zangbo suture zone (1)
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Main Boundary Fault (1)
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Main Central Thrust (2)
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Middle East
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Israel (1)
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Sakhalin Russian Federation
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Sakhalin (1)
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Siwalik Range (2)
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Atlantic Ocean
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North Atlantic
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Amazon Fan (1)
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Gulf of Mexico (1)
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Australasia
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Australia
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Lake Eyre (1)
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New Zealand (1)
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Papua New Guinea (1)
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Canada
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Dinosaur Provincial Park (1)
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British Columbia (1)
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Canadian Rocky Mountains (1)
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Yukon Territory (1)
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-
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carbon
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C-14 (3)
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Cenozoic
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Quaternary
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Holocene
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lower Holocene (1)
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upper Holocene (1)
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Pleistocene
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lower Pleistocene (1)
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upper Pleistocene (2)
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upper Quaternary (1)
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Tertiary
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Neogene
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Miocene
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upper Miocene (2)
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Pliocene (7)
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Paleogene
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Eocene
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upper Eocene (1)
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Ocala Group (1)
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upper Cenozoic (3)
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climate change (1)
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ecology (1)
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Alps
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Southern Europe
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Apennines
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Western Europe
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United Kingdom
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igneous rocks
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stable isotopes
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lineation (1)
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mantle (3)
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Mesozoic
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Cretaceous
-
Lower Cretaceous
-
Mesa Rica Sandstone (1)
-
-
Upper Cretaceous
-
Pierre Shale (1)
-
-
-
Jurassic
-
Upper Jurassic
-
Morrison Formation (1)
-
-
-
-
metals
-
alkaline earth metals
-
beryllium
-
Be-10 (3)
-
Be-10/Be-9 (1)
-
-
-
-
metamorphic rocks
-
gneisses (1)
-
metasedimentary rocks (1)
-
-
North America
-
Appalachians
-
Piedmont (1)
-
-
Basin and Range Province
-
Great Basin (1)
-
-
Great Plains (1)
-
Rocky Mountains
-
Canadian Rocky Mountains (1)
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Southern Rocky Mountains (1)
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U. S. Rocky Mountains
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San Juan Mountains (1)
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-
-
-
ocean floors (1)
-
Oceania
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Polynesia
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Hawaii
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Hawaii County Hawaii
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Hawaii Island (1)
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-
-
-
-
orogeny (4)
-
Pacific Ocean
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East Pacific
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Northeast Pacific
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Mendocino fracture zone (2)
-
-
-
North Pacific
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Northeast Pacific
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Mendocino fracture zone (2)
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-
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-
paleoclimatology (2)
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paleogeography (1)
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plate tectonics (9)
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Precambrian
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upper Precambrian
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Paleoproterozoic (1)
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springs (1)
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stream gradient
Emergent simplicity despite local complexity in eroding fluvial landscapes
Investigation of Scale-Dependent Groundwater/Surface-water Exchange in Rivers by Gradient Self-Potential Logging: Numerical Modeling and Field Experiments
Quantifying Normal Fault Evolution from River Profile Analysis in the Northern Basin and Range Province, Southwest Montana, USA
Lithological and structural controls on river profiles and networks in the northern Sierra Nevada (California, USA)
Anatomy and evolution of a dynamic arroyo system, Kanab Creek, southern Utah, USA
Controls on submarine channel-modifying processes identified through morphometric scaling relationships
Fault activity, tectonic segmentation, and deformation pattern of the western Himalaya on Ma timescales inferred from landscape morphology
Geomorphic constraints on the incision history of the lower Kern River, southern Sierra Nevada, California
Segmented strain accumulation in the High Himalaya expressed in river channel steepness
Abstract In contrast with the archetypal definition of an alluvial fan, this study shows that fans interacting with axial rivers in Yukon and Alaska commonly exhibit asymmetrical morphology in planform. Hypothesis tests relating to the geomorphological characteristics of these alluvial fans were conducted on a dataset of 63 fluvial-dominated fans. A significant relationship existed between fan asymmetry and the direction of axial river flow, which was attributed to two factors supported by examples: (1) axial rivers have a propensity to trim the toes on the up-valley sides of fans; and (2) axial river channels are deflected across the broad valley floors, which allows the profiles on the down-valley sides of fans to be longer than on the up-valley sides. However, an asymmetrical planform morphology does not lead to a significant bias in the spatial distribution of surface streams towards the up-valley sides of fans, which typically have shorter profiles from apex to boundary. If the asymmetry in fan morphology is preserved in the sedimentary record, then the interpretation of fan deposits that developed in broad valleys and that interacted with axial rivers would be improved by understanding this modern analogue.
Bedrock structural control on catchment-scale connectivity and alluvial fan processes, High Atlas Mountains, Morocco
Abstract Lithology is acknowledged to be an important internal catchment control on flow processes to adjacent alluvial fans. However, the role of inherited structural configurations (e.g. bedrock attitude) in catchment connectivity and sediment transport is rarely considered. We examine four young (<100-year-old) active tributary junction alluvial fan systems from the Dadès Valley in the High Atlas of Morocco in terms of their catchment-scale connectivity, sediment transfer and resulting alluvial fan processes. The catchments occur on the same lithologies (limestones and interbedded mudstones), but experience different passive structural configurations (tilted and structurally thickened beds). The fan systems react differently to historical peak discharges (20–172 m 3 s −1 ). Catchments containing tectonically thickened limestone units develop slot canyons, which compartmentalize the catchment by acting as barriers to sediment transfer, encouraging lower sediment to water flows on the fans. Syn-dip catchments boost connectivity and sediment delivery from translational bedrock landslides as a result of steep channel gradients, encouraging higher sediment to water flows. By contrast, translational landslides in strike-oriented drainages disrupt longitudinal connectivity by constricting the valley width, while the gradients of the main channels are supressed by the attitude of the limestone beds, encouraging localized backfilling. This diminishes the sediment to water content of the resulting flows.