Anabranching rivers : ridge-form alluvial channels in tropical northern Australia
This paper examines the existence of sand-dominated ridge-form anabranching rivers in the Kimberley region of Western Australia. It describes their channel and ridge morphology, sedimentology and stratigraphy, discusses stream flow and sediment
Controls on the variation of fan-surface age in the Blue Ridge Mountains of Haywood County, North Carolina
Alluvial cone ; Debris flow ; Flood ; Mountain ; Natural hazards ; North Carolina ; Piedmont ; Relative dating ; Topography ; United States of America ; Weathering
Alluvial fan deposits in two areas of the Blue Ridge Mountains of Haywood County were mapped and subdivided into three relative ages (young, intermediate and old) on the basis of topographic position and weathering characteristics. The mapping
Beach ridge ranges and the Holocene sea-level fluctuations on alluvial coastal plains, Northeast Japan
. Formative periods of beach ridge ranges were estimated depending on the C 14 data of five coastal plains: Sendai, Akita, Ishinomaki, Tanabu and Aomori coastal plains.
The purpose of this paper is to describe and interpret neotectonic structures in the famous travertines at Pamukkale. Three morphological varieties of travertine mass are of structural significance: 1) range-front travertines cementing alluvial -fan
and -cone sediments, 2) perched channels of wall-like form that are self-built as a result of man channelling water flow, and 3) fissure-ridge travertines that are cut by fissures roughly following ridge crests.
The Tunka rift consists of a system of baikal type basins and low-mountain interbasin ridges separating them. In the north it is surrounded by the alpine Tunka ridge and the low Olkha upland, and in the south by the siberian mountains Western Khamar
Mountains. Satellite data confirm that: a) the fan-shaped channels and ridges in western Kuwait are remnants of a fan-shaped deposit of an ancient river; and b) the river drained the Hijaz Mountains in Western Saudi Arabia. These conclusions have significant
Late Quaternary history of the accumulation plain North of the Chekanovsky ridge (Lena delta, Russia) : a multidisciplinary approach
Alluvial plain ; Asian part of Russia ; C 14 dating ; Delta ; Eastern Siberia ; Lena ; Mineralogy ; Palaeo-ecology ; Permafrost ; Quaternary ; Sedimentology ; Stratigraphy
Alluvial cone ; Fluvioglacial features ; Geochronology ; Glacial features ; Michigan ; Moraine ; Quaternary ; Sedimentary structure ; United States of America
glaciofluvial formations marking successive marginally stagnant glacial termini. Small disintegration ridges associated with major heads of outwash probably record the transition to warmer conditions with final deglaciation. Such relationships agree
In the Kwintelooijen sandpit, located in the inside of a large ice-pushed ridge, a number of thrust sheets are exposed which were formed by pushing inland ice during the Saalian glacial time. In these glaciotectonic units periglacial and fluvial
Lower Pleistocene deposits fluvial middle Pleistocene deposits and fluvial mass flow and alluvial fan Saalian deposits are involved. The most complete thrust sheets are up to 25 m thick.
the Spinatizha fault was defined using topographic analysis of the Roghani ridge and geomorphic mapping of an impressive alluvial fan, the Bostankaul fan.
fault in western Pakistan. Topographic analysis of a part of the transpression (the thrust bounded Roghani ridge) revealed northward growth of the Spinatizha fault. Geomorphic indices including stream length-gradient index, mountain front sinuosity
, valley floor width to valley height ratios, and entrenchment of recent alluvial fan deposits were used to define the lateral growth and direction of propagation of the Spinatizha fault. left-lateral displacement along Chaman fault and uplift along
Distribution, morphology and structure of sea ice pressure ridges in the Baltic Sea
This is a pioneer work to carry out a detailed study of sea ice pressure ridges in the Baltic Sea. The results are based on field measurements. They include measurements of such as the inside structure of ridges and the orientation of ice blocks
in the ridges sails. The aim of this paper is to serve as a basic information about the structure, morphology and distribution of the pressure ridges in the Baltic Sea. The results are compared with the information about the ridges in the Arctic Seas.
The objectives for this article are to describe the ridge-and-runnel enigma that exists in coastal geomorphology and to explain evidence for episodic ridge-and-runnel occurrence from a California case study. Three hypotheses are discussed : 1) quasi
-stationary ridges and runnels may reflect swash-bar growth by constructive short-period waves, especially on macrotidal coasts| 2) mobile ridges and runnels may be muted expressions of longshore bars and throughs migrating onshore| 3) ridges and runnels may
Formal analysis of ridge and channel patterns in maturely eroded terrain
This paper focuses on the formal description rather than the physical explanation of the ridge and channel patterns in maturely dissected terrain| the object of the description is the connectivity within and between these patterns rather than
their geometry. The A. investigates the topological relations between ridge and channel networks, with particular emphasis on the interdependencies between ridge and channel links and paths, and the drainage areas delineated by them.
The response of the Pacific plate to oceanic island and seamount loads has been used to estimate the distribution of ridge crest and off-ridge volcanism on the plate since the late Jurassic. The most extensive event, forming the Hess rise, Line
Islands ridge, Necker ridge, and Robbie ridge, occurred on the Pacific/Farallon and Pacific/Phoenix ridge crests during the interval 90-120Myr BP (Barremian to Turonian). This event, which extended over a much larger area than comparable volcanism
The central premises of applications of the in situ cosmogenic dating method for studying specific problems in geomorphology are outlined for simple and complex exposure settings : glacial polish and tills; meteorite impact craters; alluvial fans
; paleo-beach ridges; marine terraces; sand dunes; and bedrock slopes. The AA. also compare 10Be-26Al data with results obtained by other dating methods.
Previously a small village, Komló was declared a town in 1951. The town centre was built on Miocene sequence of sands, clays and clay marls. Before the developments the most typical landforms were landslide tongues, gullies and small alluvial fans
on the flanks of the Kaszárnya valley, which cuts through the town. New housing areas were established in stages on interstream ridges of moderate landslide hazard and, to a lessser extent, on their slopes of strong landslide hazard. Urban development resulted
The most frequent forms on blown sand surfaces are the windrifts, oval shaped sand hummocks and residual ridges. Parabolic dunes can be found in the north-eastern part of the country, in the Nyírség. On the alluvial fans larger deflation flat areas