A lava channel is a stream of fluid lava contained within zones of static (i.e., solid and stationary) lava or lava levees. The initial channel may not contain levees per se, until the parental flow solidifies over what develops into the channel and creates natural levees. This initial levee allows for the building of a more complex levee and channel. As the lava flows through the channel, the elevation of the surface of the lava flow pulsates and lava can possibly flood the associated channel walls spilling out of the channel and over the existing levees, creating what is known as overflow levees. Overflow levees increase the height and width of the original levee. The lava that flows in lava channels is commonly basaltic in composition.
Pāhoehoe lava flow on the Big Island of Hawaii The picture shows overflows from a main lava channel. The channel is crusting over with a v-shaped opening pointing upstream (top left). The main channel and overflows show the perched nature of this kind of lava channel. Red liquid lava is breaking through ephemeral levees at the overflows.Slightly eroded lava channel at Stóra-Eldborg, Reykjanes, Iceland, left over from Holocene eruptions. In the background the respective eruption fissure with craters and behind, a tuya from the Pleistocene.
A lavachannel is a stream of fluid lava contained within zones of static (i.e., solid and stationary) lava or lava levees. The initial channel may not...
still-flowing lava stream. Tubes form in one of two ways: either by the crusting over of lavachannels, or from pāhoehoe flows where the lava is moving under...
damaged by lava. The fissures had sent lava rivers that buried part of Hawaii Route 137 on May 19, and began flowing into the ocean. On May 29, lava from a...
lava flow cools, it hardens and the lava can channel beneath the surface in a tube-shaped passage. Once the flow of lava diminishes, the tube may drain, forming...
Fissure vents can cause large flood basalts which run first in lavachannels and later in lava tubes. After some time, the eruption tends to become focused...
in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface...
volcanoes. Over time fissure vents form spatter cones and can feed lavachannels and lava tubes. Karst terrain or simply karst are vast regions of barren...
tholus or the plural tholi, e.g. Inachus Tholus. Finally, channels carved by volcanic lava flows through thermal erosion use the term vallis or the plural...
volcanism. Lava tubes usually form when the external surface of the lavachannels cools more quickly and forms a hardened crust over subsurface lava flows...
The ridges and patterns on top of the lava field show the direction of the lavachannels and the often active lava tubes that may be underneath the solidified...
the lava harden, while the interior forms horizontal conduits that channel the advance of the flow. These conduits are the beginning stages of lava tubes...
who also operated Channel AKA, Clubland TV and Planet Pop. The channel launched on 29 March 2010 on Sky channel 378 as Lava. Lava specialised in the...
lobate lava flows and lavachannels. Many of the lava flows have levees along their margins. Levees are parallel ridges formed at the edges of lava flows...
in the Netherlands – Manmade control of flooding in the Netherlands Lavachannel Nullah – Steep, narrow valley Seawall – Form of coastal defence Sleeper...
protruding only on very steep-sided crater walls and the occasional lavachannel. This regolith has formed over the last 4.6 billion years from the impact...
ʻaʻa and pāhoehoe lavas. These variations can also reflect differences in lava age and preservation. Channels and lava tubes (channels that have cooled...
flow began as a river of lava flowing in an open channel. Eventually, a lava crust solidified over the top of the flowing lava. This formed a roof over...
southeast. Lava flows extend to form a shield volcano and are fed by several lavachannels, or "lava canals" as they are known locally. This lava flow, known...
on Earth. The flanks of Olympus Mons are made up of innumerable lava flows and channels. Many of the flows have levees along their margins (pictured)....
time lava flows and lava fountains issued from the summit caldera and fissures along the northeast and southwest rift zones. Although the lava threatened...
where a colony of white tip sharks can often be seen resting in the lavachannel. The ruins of a penal colony which was closed in 1959 can be visited...
a channel, made up of a stream bed between banks. In larger rivers there is often also a wider floodplain shaped by waters over-topping the channel. Flood...
any kind in the Solar System. It is thought the channel once held a river of lava. It is a single channel over most of its length, but anastomoses in several...
lozenges of less-deformed material. Molten lava flows sometimes flow in anastomosed lavachannels or lava tubes. In cave systems anastomosis is the splitting...
(2012). "Lavachannel of Khedrai Dam, northeast of Nasik in western Deccan Volcanic province: Detailed morphology and evidences of channel reactivation"...
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