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Lava tube
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- A tunnel formed when the surface of a mafic lava flow cools and solidifies, while the still-molten interior flows through and drains away. these can insulate the flow and allow it to travel great distances.
- A natural, hollow tunnel beneath the surface of a solidified lava flow through which the lava flow was fed; the tunnel was left empty when the molten lava drained out. ma & gg
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Lava, шведский
Lava, английский
- Linear amplifier for various applications
- Magma which has reached the surface through a volcanic eruption. the term is most commonly applied to streams of liquid rock that flow from a crater or fissure. it also refers to cooled and solidified igneous rock.
- General term for molten, extrusive magma erupting non-explosively
- Magma that reaches the surface of the earth.
Lava, испанский
Lava breccia, английский
Lava cover, английский
Lava dome, английский
Lava field, английский
An area covered primarily by lava flows whose terrain can be rough and broken or relatively smooth; it can include vent structures (e.g., small cinder cones, spatter cones, etc.), surface flow structures (e.g., pressure ridges, tumuli, etc.) and small, intermittent areas covered with pyroclastics. compare - lava plain, volcanic field. sw
Lava flow, английский
- An outpouring of lava onto the surface from a vent or fissure. also, a solidified tongue-like or sheet-like body formed by outpouring lava.
- A solidified body of rock formed from the lateral, surficial outpouring of molten lava from a vent or fissure, often lobate in form. compare - `a`a lava flow, lava flow unit, pahoehoe lava flow. gg
Lava flow unit, английский
A separate, distinct lobe of lava that issues from the main body of a lava flow; a specific outpouring of lava, a few centimeters to several meters thick and of variable lateral extent that forms a subdivision within a single flow. a series of overlapping lava flow-units together comprise a single lava flow. also called flow unit. compare - lava flow. gs & gg
Lava plain, английский
A broad area of nearly level land, that can be localized but is commonly hundreds of square kilometers in extent, covered by a relatively thin succession of primarily basaltic lava flows resulting from fissure eruptions. compare - lava plateau, lava field, volcanic field. sw & gg
Lava plateau, английский
A broad elevated tableland or flat-topped highland that may be localized but commonly is many hundreds or thousands of square kilometers in extent, underlain by a thick succession of basaltic lava flows resulting from fissure eruptions (e.g. columbia river plateau). compare - lava plain, lava field. gg
Lava trench, английский
A natural surface channel in a lava flow that never had a roof, formed by the surficial draining of molten lava rather than by erosion from running water; also called lava channel. compare - mawae, lava tube. sw
Lava [ae, f], латинский
Lavabedeckung, немецкий
Lavabel, немецкий
Bez.f. crêpe lavable; gut waschbarer, knitterarmer halbkrepp aus natur- oder chemiefaser mit sehr weichem, stumpfem griff
Lavabo, английский
In monasteries of the middle ages, a large stone basin from which the water flowed through a number of small orifices around the edges, for the convenient performance of ablutions before religious exercises or meals.
Lavabo, французский
Lavac, английский
Laser atmospheric visibility and
Lavacline, английский
Lavacrum, латинский
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Ash flow, английский
A turbulent mixture of gas and rock fragments, most of which are ash-sized particles, ejected violently from a crater or fissure. the mass of pyroclastics is normally of very high temperature and moves rapidly down the slopes, or even along a level surface.
Lahar, английский
- A torrential flow of water-saturated volcanic debris down the slope of a volcano in response to gravity. a type of mudflow.
- The process, associated sediments or resultant landform characterized by a mudflow composed chiefly of volcaniclastic materials on or near the flank of a volcano. the debris carried in the flow includes pyroclastic material, blocks from primary lava flows, and epiclastic material. thick flows can exhibit a crude (poorly sorted) upward-fining sediment sequence. compare - mudflow. sw & gg
- Mudflow in volcanic material. caused by water saturation (e.g. by
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