The highest elevation of the Tibetan Plateau, lying 5,700 m above sea level, occurs within the part of the Lhasa block immediately north of the India-Tibet suture zone (Yarlung Zangbo suture zone, YZSZ), being 700 m higher than the maximum elevation of more northern parts of the plateau. Various mechanisms have been proposed to explain this differentially higher topography and the rock uplift that led to it, invoking crustal compression or extension. Here we present the results of structural investigations along the length of the high elevation belt and suture zone, which rather indicate flexural bending of the southern margin of the Lhasa block (Gangdese magmatic belt) and occurrence of an adjacent foreland basin (Kailas Basin), both elements resulting from supra-crustal loading of the Lhasa block by the Zangbo Complex (Indian plate rocks) via the Great Counter Thrust. Hence we interpret the differential elevation of the southern margin of the plateau as due originally to uplift of a forebulge in a retro foreland setting modified by subsequent processes. Identification of this flexural deformation has implications for early evolution of the India-Tibet continental collision zone, implying an initial (Late Oligocene) symmetrical architecture that subsequently transitioned into the present asymmetrical wedge architecture.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4502525 | PMC |
| http://dx.doi.org/10.1038/srep12076 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Background: Apoptosis induced by cerebral ischemia-reperfusion is one of the key pathological processes of nerve injury. Tibetan golden acupuncture (GA) is a common treatment for ischemic brain injury in Tibetan. The aim of this study was to explore whether GA prevents cerebral ischemia-reperfusion-induced apoptosis in mice by blocking the JNK/caspase-3 pathway.
View Article and Find Full Text PDFORAI2 is Important for the Development of Early-Stage Postirradiation Fibrosis in Salivary Glands.
Int J Radiat Oncol Biol Phys
October 2024
State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China. Electronic address:
Purpose: Although postirradiation hyposalivation significantly impairs patient quality of life, the underlying mechanisms driving radiation-induced salivary gland fibrosis and hyposalivation remain poorly understood. This study aims to explore the role of calcium-mediated signaling pathways in radiation-induced salivary gland fibrosis.
Methods And Materials: Primary human submandibular gland (SG) cells and C57BL/6J female mouse SGs were exposed to irradiation to model fibrosis development.
Biofermentation of aquatic plants: Potential novel feed ingredients for dairy cattle production.
Sci Total Environ
November 2024
Institute of Animal Husbandry and Veterinary, Tibet Academy of Agricultural and Animal Husbandry Sciences, Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lhasa 850000, China. Electronic address:
The study assessed the impacts of aquatic plant silages on feeding efficiency and dairy cattle health as an alternative to conventional corn silage under high altitude conditions. Mid-lactation Holstein cows were assigned to treatment groups according to a randomized complete block design of parity, previous 105-d milk yield, and body weight. Cows (n = 8 per group) were fed with aquatic plant silage inoculated with Bacillus subtilis (BS), Yeast (YS), or conventional corn silage without inoculants (control) in addition to [standard grain feed] for 75 consecutive days.
View Article and Find Full Text PDFHigh-altitude aquatic ecosystems offer faster aging rate of plastics.
Sci Total Environ
November 2024
Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China.
Article Synopsis
- Research on how plastics age in high-altitude ecosystems is limited, especially compared to studies in aquatic systems at lower elevations, despite the challenging conditions like high UV radiation and low temperatures.
- This study examined the long-term aging of both non-biodegradable (PET, PP) and biodegradable plastics (PLA+PBAT, SBP) in a Tibetan Plateau tributary, revealing that all plastics experienced rapid aging followed by a plateau phase, with PP aging similarly to BPs.
- The findings showed that environmental factors like UV exposure, lower temperatures, and specific water quality parameters (total nitrogen and phosphorus) significantly affect plastic aging, emphasizing the need to consider the environmental impact of plastics, particularly in fragile high-altitude ecosystems.
The expression spectrum of yak epididymal epithelial cells reveals the functional diversity of caput, corpus and cauda regions.
Genomics
September 2024
College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621000, China. Electronic address:
Sperm undergo a series of changes in the epididymis region before acquiring the ability to move and fertilize, and the identification of genes expressed in a region-specific manner in the epididymis provides a valuable insight into functional differences between regions. We collected epididymal tissue from three yaks and cultured epithelial cells from the caput, corpus and cauda regions of the yak epididymis using the tissue block method. RNA sequencing analysis (RNA-seq) technology was used to detect gene expression in yak epididymal caput, corpus and cauda epithelial cells.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!