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Pavel Mikhailik, Irina Vishnevskaya, Liang Yi, Natalia Soloshenko and Vadim Pellinen
A study of the isotopic compositions of neodymium and strontium in four mineral fractions of the hydrogenous ferromanganese crusts of the northernmost Pacific has been carried out for the first time. The relationship of the 87Sr/86Sr ratio and eNd value ...
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Chiara Elmi, Jacob R. Whitlock, Matthew T. Macdowell and Richard D. Foust, Jr.
Many regions of the United States contain manganese deposits economically valuable in New England, Appalachian, and Piedmont regions in the Eastern United States, in Northern Arkansas, and, to a small extent, in Central?Western California. Mn oxide/hydro...
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Linzhang Wang and Zhigang Zeng
The ferromanganese deposit is a type of marine mineral resource rich in Mn, Fe, Co, Ni, and Cu. Its growth process is generally multi-stage, and the guyot environment and seawater geochemical characteristics have a great impact on the growth process. Her...
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Gang Hu, Haiming Zhao and Zelin Li
A prediction model of the sound velocity and sound attenuation of underwater cobalt-rich crusts (CRCs) was established to solve the problem that it is difficult to predict the sound velocity in thickness measurements of cobalt-rich crusts. Based on Biot ...
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Juan Carlos Cañaveras, María Concepción Muñoz-Cervera and Sergio Sánchez-Moral
Arenaza Cave is located in Vizcaya (N Spain) and contains important Palaeolithic rock art representations. This cave belongs to an active karstic system developed on Lower Cretaceous limestones, mainly consisting of micrites and biomicrites with abundant...
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Sara Calandra, Emma Cantisani, Silvia Vettori, Marilena Ricci, Beatrice Agostini and Carlo Alberto Garzonio
During the last restoration campaign of the Baptistery of San Giovanni in Florence (Italy), the assessment of the state of conservation of external surfaces was performed, with a multi-analytical approach, in order to support the conservation and restora...
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Zhongrong Qiu, Chunhui Tao, Weilin Ma, Ágata Alveirinho Dias, Siyi Hu, Yuexiao Shao, Kehong Yang and Weiyan Zhang
The geochemistry and mineralogy of sediments provide relevant information for the understanding of the origin and metallogenic mechanism of ferromanganese nodules and crusts. At present, there are still few studies on the sediment origin of the Clarion?C...
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Barry J. Hibbs
Environmental problems may develop in groundwater basins when water levels change due to long-term wetter or drier climate or land development. A term related to water-level elevation is flow capacity, which develops in aquifers when the water table is a...
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Yufan Ding, Catia Sofia Clemente Salvador, Ana Teresa Caldeira, Emma Angelini and Nick Schiavon
An experimental study was conducted to assess the nature and extent of the biodeterioration of the limestone in the Batalha Monastery in Portugal. Stone fragments covered with microbial biofilms and lichenous crusts were investigated using Optical Micros...
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Benjamín Otto Ortega-Morales and Christine Claire Gaylarde
Cultural heritage buildings of stone construction require careful restorative actions to maintain them as close to the original condition as possible. This includes consolidation and cleaning of the structure. Traditional consolidants may have poor perfo...
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