Results 41 to 50 of about 4,520 (168)

Spatial and temporal hydrochemical variations of the spring-fed travertine-depositing stream in the Huanglong Ravine, Sichuan, SW China

Acta Carsologica, 2010
Automatic hydrochemical logging and in situ titration com­bined withlaboratory analysis were used to understand the spatial and temporal hydrochemical variations of the spring-fed, travertine-depositing stream in celebrated Huanglong Ravine, Sichuan, SW ...
Haijing Wang, Zaihua Liu, Jinliu Zhang, Hailong Sun, Dejun An, Ruxian Fu, Xiaoping Wang   +6 more
doaj   +1 more source

Out in the cold? A review of Early Middle Palaeolithic settlements in northern Central Europe, age data and geological preconditions for site formation and preservation

Boreas, EarlyView.
The characteristics of settlement of Neanderthals in northern Central Europe during the earlier phases of the Middle Palaeolithic (Marine Isotope Stage 8–6) have been a matter of debate for decades, specifically regarding the population dynamics at such latitudes during the coldest phases. In this paper, we review the known archaeological record of the
Gianpiero Di Maida, Jutta Winsemann, Malte Hoffmann, Tobias Lauer, Utz Böhner, Thomas Terberger   +5 more
wiley   +1 more source

Physical and mechanical appraisal of two carbonatic stones widely used in the architectural heritage of eastern Andalusia, Spain

Materiales de Construccion, 2011
We present a detailed characterization of two calcareous stones from Andalusia (Southern Spain), namely Escúzar calcarenite and Olivillo travertine. Both materials can replace two stones extensively used in the architectural heritage of Andalusia, i.e ...
Maja Urosevic, Eduardo Sebastián Pardo, Encarnación Ruiz-Agudo, Carolina Cardell   +3 more
doaj   +1 more source

Changing climates and environments within the complex Middle to Late Pleistocene fill of an overdeepened valley at Niederweningen, Switzerland

Boreas, EarlyView.
Glacially overdeepened valleys in the northern Alpine Foreland preserve Middle to Late Pleistocene sedimentary sequences that may serve as valuable archives for reconstructing past environmental changes in response to shifts in climate. This study presents a multidisciplinary analysis of two sediment cores from the overdeepened Wehntal Valley at ...
Johannes M. Miocic, Nigel Thew, Ruth Drescher‐Schneider, Hans Rudolf Graf, Marlu Kühn, Frank Preusser, Werner H. Schoch, Lucia Wick, Heinz Furrer   +8 more
wiley   +1 more source

Variation characteristics and paleoclimatic/environmental implications of Mg/Ca, Sr/Ca, and Ba/Ca ratios in endogenic travertine from Baishuitai, Yunnan Province

Carsologica Sinica
Reconstructing high-resolution paleoclimate and environmental records is of great significance for deepening our understanding of the mechanisms driving global climate change and for predicting future climate trends.
Hailing GAN, Hongyang XU, Xi ZHAO, Limin ZHOU, Xiangmin ZHENG   +4 more
doaj   +1 more source

Assessment of radiological hazards of travertine rocks as building materials [PDF]

Iranian Journal of Medical Physics, 2019
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
Reza Pourimani, Roshanak Ghorbani
doaj   +1 more source

Description of Flavicapitulum gen. nov. and two new species of Marmoreocelis from thermal habitats in the Americas

Journal of Phycology, EarlyView.
Abstract Three novel taxa in the Coleofasciculales were observed in hot springs in Yellowstone National Park, Wyoming, United States, and in the Tabaconcito thermal springs on the Rio Tabacón in Costa Rica. Flavicapitulum vaporiphilum gen. et sp. nov. was located in a supported clade with Gracilinea and Marmoreocelis.
Jeffrey R. Johansen, Jan Pokorný, Radka Hauerová, Jan Kaštovský   +3 more
wiley   +1 more source

Environmental changes and human settlement in the central Marches (Italy) during the early-middle Holocene

Physio-Géo, 2007
In the Early Holocene, the central Marches (Italy) underwent a widespread development of forest cover and soils which drastically reduced slope degradation and related aggradation processes in riverbeds.
Gilberto Calderoni, Giuseppe Cilla, Francesco Dramis, Cecilia Gobbi   +3 more
doaj   +1 more source

Description and terrestrial ages of the Calama Area Meteorite Collection (Atacama Desert, Chile)

Meteoritics &Planetary Science, EarlyView.
Abstract We present a comprehensive study of a meteorite collection from the Atacama Desert (Chile), the driest and most climatically stable desert in the world. This collection includes meteorites from three adjacent Dense Collection Areas (DCAs) in the northern part of the Atacama Desert: Calama, Sierra Gorda, and Chug Chug, referred to as the ...
Carine Sadaka, Jérôme Gattacceca, Florian Dumas, Régis Braucher, ASTER Team, Matthieu Gounelle, Dilyara Kuzina, Cyril Lorenz, Alexandre Corgne, Pierre Sempéré   +9 more
wiley   +1 more source

Deformation patterns in the Van region (Eastern Turkey) and their significance for the tectonic framework

Geologica Carpathica, 2019
The area of investigation is located on the south-eastern shore of Lake Van in Eastern Turkey where a destructive earthquake took place on 23rd October, 2011 (Mw = 7.1).
Şengül M. Alper, Gürboğa Şule, Akkaya İsmail, Özvan Ali   +3 more
doaj   +1 more source