Flow recession as a driver of the morpho-texture of braided streams

2015 ◽  
Vol 41 (6) ◽  
pp. 754-770 ◽  
Author(s):  
Yael Storz-Peretz ◽  
Jonathan B. Laronne ◽  
Nicola Surian ◽  
Ana Lucía
Keyword(s):  
Braided Streams

Braided streams

2006 ◽  
pp. 90-93 ◽  
Author(s):  
Rhodes W. Fairbridge
Keyword(s):  
Braided Streams

A Bronze Age battlefield? Weapons and trauma in the Tollense Valley, north-eastern Germany

Antiquity ◽  
2011 ◽  
Vol 85 (328) ◽  
pp. 417-433 ◽  
Author(s):  
Detlef Jantzen ◽  
Ute Brinker ◽  
Jörg Orschiedt ◽  
Jan Heinemeier ◽  
Jürgen Piek ◽  
...  
Keyword(s):  
Bronze Age ◽  
Skeletal Remains ◽  
Human Skeletal Remains ◽  
Face To Face ◽  
Eastern Germany ◽  
North Eastern ◽  
Braided Streams ◽  
The Dead

Chance discoveries of weapons, horse bones and human skeletal remains along the banks of the River Tollense led to a campaign of research which has identified them as the debris from a Bronze Age battle. The resources of war included horses, arrowheads and wooden clubs, and the dead had suffered blows indicating face-to-face combat. This surprisingly modern and decidedly vicious struggle took place over the swampy braided streams of the river in an area of settled, possibly coveted, territory. Washed along by the current, the bodies and weapons came to rest on a single alluvial surface.

The origin of the Neihart Quartzite, a basal deposit of the Mid-Proterozoic Belt Supergroup, Montana, U.S.A.

1989 ◽  
Vol 126 (3) ◽  
pp. 271-281 ◽  
Author(s):  
J. Schieber
Keyword(s):  
Volcanic Rocks ◽  
Source Area ◽  
Source Material ◽  
Aeolian Transport ◽  
Quartz Arenite ◽  
Belt Supergroup ◽  
Braided Streams ◽  
Felsic Volcanic ◽  
Uplift And Erosion ◽  
Quartz Grains

AbstractThe Neihart Quartzite is the basal quartz arenite unit (≍270m thick) of the Mid-Proterozoic Belt Supergroup of western North America. Petrographic studies indicate a source area with plutonic granitic, metamorphic and felsic volcanic rocks. Extreme textural maturity and bimodality indicate an episode of aeolian transport for the detrital quartz grains. The lower 80% of the Neihart Quartzite were probably deposited by braided streams, whereas the upper 20% were deposited in shoreline environments. Residual material that was ‘stored up’ on the pre-Beltian cratonic surface and underwent aeolian reworking was the likely source material for most of the Neihart Quartzite. Less mature sediments in the top portion of the Neihart Quartzite indicate uplift and erosion of new source material during Neihart deposition. Other known cratonic quartz arenites, such as the St. Peter Sandstone (Ordovician), Lamotte Sandstone (Cambrian) and Flathead Quartzite (Cambrian), are thin (tens of metres thickness) and exhibit sheet-like geometry. In contrast, the Neihart Quartzite and its probable lateral equivalents are considerably thicker and increase in thickness towards the central portions of the basin. It thus appears that Belt sedimentation began with accumulation of a basal quartz arenite unit, and that sand for that unit was transported by braided streams from the surrounding craton to a gradually subsiding Belt basin.

scholarly journals Recent coastline changes of fan-deltas in the Western Gulf of Corinth, Central Greece

2016 ◽  
Vol 47 (1) ◽  
pp. 315 ◽  
Author(s):  
Th. Perrou ◽  
I. Kaza ◽  
V. Efthymiadis ◽  
E. Karymbalis ◽  
C. Chalkias
Keyword(s):  
Late Holocene ◽  
River Mouth ◽  
Shoreline Change ◽  
Gis And Remote Sensing ◽  
Aerial Photos ◽  
Gulf Of Corinth ◽  
Accretion Rates ◽  
Braided Streams ◽  
Fan Deltas ◽  
Remote Sensing Techniques

This study deals with the assessment of recent shoreline change rates along the fandeltas of Finix, Tholopotamo, Lagadi, Meganitas, Selinous, Kerinitis, and Vouraikos streams by using GIS and Remote Sensing techniques. These Late Holocene fandeltas have been formed by high gradient braided streams that deposit their coarse sediment load along the southern coast (North Peloponnese) of the western Gulf of Corinth. For the purposes of the study a spatial database was constructed, organized and implemented consisting of analogue detailed (at the scale of 1:5000) topographic diagrams, and orthorectified aerial photos taken in 1945, 1996 and 2008. Comparisons of fan-deltas shoreline positions for the periods 1945 vs. 1996 and 1945 vs. 2008 were made and the segments of the coastline along the aprons of the fan-deltas which are subject to erosion accretion were defined. Coastal erosion is the main dominant geomorphic process along a significant part of the fan deltas coastline. The highest retreat rate value (2.44 m/yr for the period 1945-1996) was estimated for the Finix stream fan delta, about 150 m west of the river mouth, while the highest accretion rates since 1945 (3.10 and 3.00 m/yr) occurred at the mouths of Vouraikos and Selinous rivers respectively.

Sign in / Sign up

Export Citation Format

Share Document