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Beijing, China

Xing L.-D.,University of Alberta | Xing L.-D.,Chinese Academy of Sciences | Mayor A.,Stanford University | Chen Y.,Capital Museum
Geological Bulletin of China

This paper describes the Lianhua Baozhai (Lotus Mountain Fortress) of the Laoyingshan Mountain in Qijiang County, Chongqing City, where abundant and diverse dinosaur tracks, fortress structures and word carvings of past dynasties are exceptionally preserved. The Lianhua Baozhai historic monuments can be traced back to Baoyou 4th Year of the Southern Song Dynasty (A.D. 1256). The fortress might have been used to repel the attacks of the Mongolian Army from the Yuan Dynasty on Sichuan, which was then still dominated by the Southern Song Dynasty. Many historic monuments were also constructed there during the Qing Dynasty. These historic monuments are found along with an abundance of dinosaur tracks (especially hadrosaurid tracks), representing at least five different preservation types, and constituting direct evidence for the long-term inhabitation of ancient Chinese people at this dinosaur track site (perhaps longer than 700 years). The name of the Lianhua Baozhai reflects their belief that the track site represented lotus leaf veins (the mud cracks) and petals (the hadrosaurid tracks) submerged in water (the ripple marks). This study indicates that dinosaur tracks were taken into account in Chinese folklore and in the formation of partial ancient place names in China, which may therefore constitute important clues for the search of dinosaur tracks. Source

Xing L.,China University of Geosciences | Zhang J.,China University of Geosciences | Klein H.,Saurierwelt Palaontologisches Museum | Mayor A.,Stanford University | And 6 more authors.
Ichnos:an International Journal of Plant and Animal

For centuries, dinosaur footprints have influenced popular legends and myths in the surroundings of important tracksites. In many regions of China, track-bearing slabs were utilized as building materials and integrated in houses, yards, or cave dwellings, often serving as auspicious symbols or aesthetic decorations. Special birds such as the golden pheasant, widely distributed in China, may have inspired people to consider them as mythic trackmakers. The Zizhou area in northern Shaanxi, China, is famous for tracksites in the lower portion of the early Middle Jurassic Yan'an Formation. Sandstones with dinosaur tracks from these localities have been collected since the Ming Dynasty (1368–1644) and are used by villagers as cellar covers, stalls, or millstones. Besides their historical importance, the slabs are a valuable resource for ichnological research. Well-preserved theropod, ornithopod, and stegosaur tracks such as Kayentapus, Eubrontes, Anomoepus and Deltapodus incorporated into manmade structures can be seen while simply walking through some small villages of this area. © 2015, Copyright © Taylor & Francis Group, LLC. Source

He H.-P.,University of Science and Technology Beijing | Mei J.-J.,University of Science and Technology Beijing | Hu Y.-Y.,Capital Museum
Corrosion and Protection

The protective effect of three resin materials including, acrylate, fluorocarbon and silicone on white marble was evaluated by property tests of the anti-corrosion capability against acid, alkali and salt, the acid degree, the air permeability, the hydrophobicity and the light resistance. The results indicated that all three coatings had good protection effect. The silicone coating had a better capability of air permeability and hydrophobicity than the other two, and is suggested to be the conservation material for efflorescent white marble cultural relics. Source

Teng F.,Peking University | Hu G.,Peking University | He H.-P.,Capital Museum
Xiandai Huagong/Modern Chemical Industry

Based on the principle of biomimetic synthesis, silicon dioxide protective films are prepared on marble surface. Sodium silicate and sodium fluosilicate are selected as compound silicon source. The morphology is analyzed by scanning electron microscope and the structure of silicon dioxide film is characterized by Fourier transform infrared spectroscopy. Furthermore, the mechanism of the silicon dioxide film deposited on marble surface is discussed. The results show that the silicon dioxide film can be synthesized in the condition of pH 6-7. Silicon dioxide grains deposit on the marble surface via three process: nucleus formation, growing and accumulation. An integrity and compact film can be prepared in 24 hours. The film has excellent protective properties such as acid resistance, weather fastness, gas permeability, and so on. Source

Xing L.,University of Alberta | Mayor A.,Stanford University | Chen Y.,Capital Museum | Harris J.D.,Dixie State University | Burns M.E.,University of Alberta
Ichnos:an International Journal of Plant and Animal

Fossilized footprints made by extinct creatures have captured the attention of humans worldwide. Many different prescientific cultures have attempted to identify the trackmakers and account for the tracks of unfamiliar species. In China, local folklore about dinosaur footprints is preserved in oral traditions of great antiquity, which persist today in at least five regions with conspicuous tracksites. Although folk explanations are expressed in mythological terms, they are based on careful observation over many generations. Ichnological myths often contain details that reveal attention to size, morphology, and sedimentology of tracks. Chinese folklore identified dinosaur tracks as those of divine or fantastic birds of various sizes, legendary large mammals, sacred plants, and deities or heroes. Popular knowledge of dinosaur tracksites and myth-based descriptions of mysterious footprints in stone could serve as a guide for paleontologists in East Asia, leading them to identify new trackways previously unknown to science. © 2011 Copyright Taylor and Francis Group, LLC. Source

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