Sentence examples similar to a layer of tephra from inspiring English sources

Even portions of 50 mm thick layers had vanished on Plot 2. On Plot 7 a diffuse layer of tephra could be recognised in the top 60 70 mm but the tephra was buried by 10 20 mm of topsoil.

The tephra experiments generally show a decrease in current with increasing coverage, but even with nearly 6 kg/m2 coverage, when the module is completely covered with a thick layer of tephra, the voltage never decreased below about 3 V (Additional file 4).

Major Plinian eruptive events include: The historical AD 79 eruption of Mount Vesuvius buried the Roman towns of Pompeii and Herculaneum under a layer of ash and tephra.

The eruption spread a layer of volcanic ash (or tephra) over the surface of the ice sheet.

Following Wood and Johnson (1978) two broad soil-forming processes can be recognised – horizonation, represented here by the deposition of a layer of volcanic ash, and homogenization, pedoturbation or soil mixing produced by subsequent burial of the tephra layer.

These form several layers of tephra constructing the mountain.

On Santorini, there is a 60 m thick layer of white tephra that overlies the soil clearly delineating the ground level prior to the eruption.

Due to its tectonic setting, the JS and northern ECS sediments contain a large number of tephra layers that were erupted from volcanoes on the Japanese islands and the Korean Peninsula (Ikehara 2015).

The volcano also erupted lapilli (a form of tephra) and pumice bombs.

As the layering of the tephra is still readily observed it is possible to determine whether the tephra is still in situ at specific sites, erosionally reworked, or absent (Fig. 4).

Tephrochronology, method of age determination that makes use of layers of ash (tephra).