More than 700,000 square meters of "treasure map" helps "Jiangkou Shenyin" archaeological discovery
China News Network, Chengdu, May 2 (He Shaoqing, Wang Xiaogang) The reporter learned from the University of Electronic Science and Technology on the 2nd that the joint exploration team (referred to as the exploration team) composed of a number of units including the University of Electronic Science and Technology of China and the Chengdu Center of China Geological Survey was successfully drawn The "Overview of Treasures" covering the entire area of "Jiangkou Shenyin" covering more than 700,000 square meters, helped the "Jiangkou Shenyin" archaeological excavation to make major discoveries.
Zhang Xianzhong's "Jiangkou Shen Yin" has always been a historical mystery. According to records from the Qing Dynasty, Ming General Yang Zhan ambushed the fleet of the leader of the Western Army Zhang Xianzhong in the Minjiang River. After the defeat, Zhang Xianzhong left the treasure legend of "Thousand Ships and Silver".
The "Shu Shizi Bao" weighing 16 pounds. Photo courtesy of HKUST
The first phase of archaeology at the "Jiangkou Shenyin" site was launched in 2017, and a total of more than 30,000 water cultural relics were released, confirming the legend of "Jiangkou Shenyin". The second phase of archaeology was launched in 2018, and the detection area is dozens of times the area of the first detection test in early 2017. The exploration team has assisted Jiangkou archaeological exploration twice, drawing a "3D treasure map" covering an area of 100,000 square meters, providing accurate positioning of the ancient river channel in the second phase of the "Jiangkou Shenyin" archaeological excavation area Scientific basis.
The third-phase archaeology of the "Jiangkou Shenyin" site began on January 10, 2020, and a total of more than 10,000 cultural relics were excavated. The most important discovery was a golden seal "Shu Shizi Treasure" weighing approximately 16 kg. In this phase of exploration work, the detection team covered an area of more than 700,000 square meters, more than 7 times the area of the second phase of exploration, realized the three-dimensional morphological detection and modeling of the river bed bedrock in the whole area, and obtained the river characteristics of the whole area Overview diagram.
The "3D Treasure Map" drawn by the second phase of archaeological exploration. Photo courtesy of HKUST
The hydrological environment of the "Jiangkou Shenyin" site is complex, and the single relics have small geometric dimensions and are buried in a pebble layer underwater, with scattered distribution and complicated rules. In the first two explorations, the exploration team innovatively proposed to focus on detecting the bedrock structure of the river bed, studying the distribution law of cultural relics, and looking for "favorable reservoir areas in Shenyin". The area of the third stage archaeological excavation cofferdam is closely related to the “inverted slope structure” in the bedrock of the river. The unearthed cultural relics since then further confirmed the team's judgment on "Shenyin favorable storage area".
Researchers conduct underwater exploration. Photo courtesy of HKUST
The detection team is also in a key section conducive to cultural relics enrichment, using high-density layout (2 m pitch) frequency domain electromagnetic profile method and geomagnetic method to carry out non-destructive testing of metal cultural relics, through electromagnetic and geomagnetic response characteristics analysis, It provides a basis for judgment for subsequent archaeological excavations.
"The detection of inland shallow waters has its particularity. In the face of the complex amphibious working environment, we have adopted new research ideas and method technologies. These new ideas and method technologies are very important for underground detection in similar environments. Learn from the meaning and promote the value. "Professor Hu Guangmin, Dean of the School of Resources and Environment, University of Electronic Science and Technology, said that the team will further summarize the experience and make" CT for the earth "easier and more efficient. (Finish)