The rate of weight specific oxygen consumption in the Red Sea supra littoral crab Grapsus tenuicrustatus was examined under aerial and aquatic conditions. This indicates that the smallest crabs had the highest weight specific oxygen consumption, and the rate of aquatic respiration was lower than that in air. The effect of temperature on the rate of oxygen consumption and heart beat was also inv...

Nosrat-Abad ophiolitic extrusive sequence, located in the Sistan Suture Zone, in south eastern Iran. The extrusive sequence, contains pillow lava, sheet flow and related volcanic-clastic breccias which have undergone low-grade metamorphism. This association shows calc alkaline to tholeiitic affinities. Interpretation of the geochemical data and behavior of the elements in different diagrams rev...

At least 13 times during the Pleistocene Epoch lava flowed into the inner gorge of the Grand Canyon and formed lava dams, as high as 600 m, that temporarily blocked the flow of the Colorado River. K-Ar ages on these lava dams indicate that the seven youngest formed within a short period of time between about 0.6 and 0.4 mega-annum (Ma). The physiography of the lava dam remnants within the canyo...

Meter-scale DSL-120 sonar mapping and coregistered Argo II photographic observations reveal changes in eruptive style that closely follow the third-order structural segmentation of the ridge axis on the southern East Pacific Rise, 17°11’-18°37’S. Near segment ends we observe abundant basaltic lava domes which average 20 m in height and 200 m in basal diameter and have pillow lava as the dominan...

Lava caves are an understudied ecosystem in the subterranean world, particularly in regard to nitrogen cycling. The diversity of ammonia oxidation (amoA) and nitrogen fixation (nifH) genes in bacterial mats collected from lava cave walls on the island of Terceira (Azores, Portugal) was investigated using denaturing gradient gel electrophoresis (DGGE). A total of 55 samples were collected from 1...

Air Putih, Lebong Regency's geothermal field, is near gold mining. The relationship between the two can be illustrated in type of rock alteration. study aims to identify alteration zone caused by Regency system. It was described correlation rocks' resistivity and chargebility values based on geoelectric measurement. Two tracks spread along Putih tour, with a track length 240 meters, were used s...

The rate at which lava emerges from a volcano is a fundamental property of the dynamics of the eruption. Intensive field measurements can capture this. However, for many, often cloud-covered, volcanoes with long-lived eruptions, spaceborne InSAR provides a potentially useful source of information. Repeated DEM creation at intervals allows the changing thickness of the lava flow field to be meas...

Water is one of the most important resources, and its availability for drinking, irrigation, and ecosystem’s habitat is still subject to anthropogenic disturbance. During the last decades, understanding aquatic pollution and improvement in water management have developed. One of the most effective achievements concerning water use is surely the establishment of biofilm reactors in common wastew...

Regolith is a terrestrial term, also used for the Moon. It has been defined as " a general term for the layer or mantle of fragmental and unconsolidated rock material, whether residual or transported and of highly varied character, that nearly everywhere forms the surface of the land and overlies or covers bedrock. It includes rock debris of all kinds, [including] volcanic ash. .. " (Bates and ...