Get out and explore any of the 82 great hiking trails located right here in L.A. This guide book features short and long day hikes while keeping you close to home.
During the past 15 years, I have led field work in three Tibetan basins: Qaidam Basin, Kunlun Pass Basin, and Zanda Basin. These projects are designed to answer questions related to the geology and paleontology of the plateau, such as:
Acknowledgments: Our field work was funded by the National Science Foundation (EAR-0924142; EAR-0716507; EAR-0446699), National Geographic Society (No. W 22-08; NGS 6771-00; NGS 6004-97), Chinese Academy of Science Outstanding Overseas Scholar Fund (KL205208), and the Chinese National Natural Science Foundation (Nos. 49872011 and 40128004).
In the last several years, I have worked in several large terrestrial basins in and around the Tibetan Plateau: Lanzhou Basin, Linxia (Longzhong) Basin, and Danghe (Tabenbuluk) Basin in Gansu Province; Qaidam (Tsaidam) and Kunlun Mountain Pass Basin in Qinghai Province, and Zhada Basin in southwestern Tibet Autonomous Region. Work in these basins allows us a sense of vertebrate evolution in various parts of the Plateau during different times.
The Qaidam Basin is the largest terrestrial basin on the Tibetan Plateau, and is also richest in vertebrate fossils. This exposure at the "Ghost Town" in central Qaidam Basin is typical of wind erosions on formerly extremely saline deposits.
This upper right first through third molars of a Hispanotherium rhino is among mammals in the middle Miocene part of the eastern Qaidam Basin. This rhino is also found in the middle Miocene of Europe.
This nearly complete antler of Stephanocemas, an extinct primitive deer, was discovered and collected by Gary Takeuchi in 2006. Deer antlers are particularly abundant in the Qaidam Basin. Modern deer often prefer wooded environments. Presence of the deer in the middle and late Miocene of Qaidam permits us to learn something about the paleoenvironments of the basin. Stephanocemas is commonly found in the early to middle Miocene of Eurasia.
Fishes are particularly abundant in eastern Qaidam Basin during the late Miocene. This articulated tail of a cyprinid fish (carp family) is an example of what can be found in some localities. Some fish reaches to rather large sizes, possibly 100 pounds or more. Such a large fish suggests the presence of large bodies of fresh water during the Miocene. This is in sharp contrast to an extremely dry environment in much of the modern Tibetan Plateau, especially in the present Qaidam Basin.
This material is based upon work supported by the National Science Foundation (No. EAR-0446699). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.