BACKGROUND Building materials and the ventilation rate of a building are two main factors influencing indoor radon and thoron levels (two radioactive gases which have the most important role in human natural radiation exposure within dwellings). OBJECTIVES This analytical descriptive study was intended to determine the relationship between indoor radon and thoron concentrations and the buildi...

Lipid biomarkers and C fractionation patterns were used to understand the dynamics of carbon cycling during microbial metabolisms in different environments of travertine precipitation (called facies) at Spring AT-1 on Angel Terrace in the Mammoth Hot Springs complex of Yellowstone National Park, USA. Microbial mats that encrust travertine deposits were collected for analyses of lipid biomarkers...

The travertine deposit springs are located on the southeast of the Damavand Volcano, 85 km northeast of Tehran Province. The deposits of these springs mainly outcropped with cascade, hill, conical, layered, calcareous Tufa and Fissure-Ridges morphologies. Travertine studies have usually been conducted based on field observations, geochemistry and hydrology. The tectonic activity of the region, ...

Abstract In March 2018, part of the travertine barrier at Milino Lake, in Plitvice Lakes National Park Croatia, broke off, significantly altering flow water over barrier. Encouraged by this event, Faculty Civil Engineering Rijeka conducted a monitoring and analysis erosion dynamics barriers on Lakes. Within project, analyses stability were carried out. To author's knowledge, physical mechanical...

The Tibetan Plateau is known as the core area of third pole Earth and a key for global climate change research. This study uses Zabuye Salt Lake travertine dam research object U–Th dating chronological framework proposes that carbon oxygen isotopes can be used precipitation index through analysis hydrogen spring water, petrology, mineralogy, travertine. records over last 800 years show dry cond...

Travertine is a sedimentary rock with generally layered structure, mainly comprising carbonate. They are used for different purposes in interior and exterior spaces by cutting parallel or perpendicular to the bedding according use. may contain several facies linked variations conditions during formation. With these features, travertine one of rocks anisotropy most commonly observed. In this stu...

Although fossil fluvial travertines have been described, factors controlling their formation are poorly understood because of the paucity modern counterparts. To disclose processes affecting deposition, a travertine system at Bagni San Filippo (Siena, central Italy) was studied here and compared with other cases. The occur in valley an ephemeral stream, but continuous water influx from hot spri...