We propose the use of cover as a quick, low-resolution proxy for the abundance of microbial species, which reduces polymerase chain reaction bias. We showcase this concept in a computation that uses clone library information from travertine-forming hot springs in Yellowstone National Park to provide estimates of relative covers at different locations within the spring system. Samples were used ...

We present a simple, abstract model for travertine dam formation. The simulation uses a depth-averaged hydrodynamic code, coupled with an empirical precipitation model where surface-normal growth rate is proportional to local flow rate. The dynamics of the resulting formation, coarsening and migration (progradation) of crests is demonstrated and compared with field observations. The local self-...

Introduction: Although travertine is now widely used as a building material, the effects of its radiological hazards to public health should be a matter of concern. Therefore, this study aimed to determine its radiological parameters with regard to human health. Material and Methods: In this research 10 travertine samples were collected ...

Abstract There is a fundamental interest in studying travertine rocks, and this to understand their structure, geomechanical behavior other particularities order guarantee proper use different engineering architectural applications, thus, evaluate the sustainability of travertines, natural resources, stability slopes, preservation cultural heritage mitigation possible anthropic risks. Travertin...

In the urban sites the lead addition in petrol, as an antidetonation agent, allows pollution of exposed surfaces of buildings, soils and vegetation. In a preliminary way a research work has been carried out simulating lead pollution of the slab surfaces of the Roman-Travertine stone. The Roman-Travertine is a limestone dimensional stone widely employed in Italy especially for dressing of the ol...

Travertine/Tufa landscape is an important heritage and ecological wealth given to mankind by nature. itself has excellent scientific aesthetic value, mostly with geological archives such as volcanoes, tectonics, glaciers, well fingerprints referring climate evolution of life. However, these travertine/tufa landscapes also face degradation disappearance caused change, natural disasters, human ac...