+ Translate
+ Most Popular
Gaucher's disease;thirty-two years experience at Siriraj Hospital
A study of Macrobathra Meyrick from China (Lepidoptera, Cosmopterigidae)
First occurrence in ores of tetragonal chalcocite
Effects of trace element nutrition on sleep patterns in adult women
N.Z. range management guidelines. 2. Design of grazing management systems for tussock country
A case of lipoma of the esophagus
A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types
Life history of the coronate scyphozoan Linuche unguiculata (Swartz, 1788)
Perceptual restoration of obliterated sounds
Mutagenicity studies on two chromium(III) coordination compounds
The formation of the skeleton. I. Growth of a long bone. 1st appearance of a center of calcification
Leucopenia and abnormal liver function in travellers on malaria chemoprophylaxis
The joint commission: four key root causes loom large in sentinel event data
Treatment of vitiligo with topical 15% lactic acid solution in combination with ultra violet-A
Behaviour of dairy cows within three hours after feed supply: I. Influence of housing type and time elapsing after feed supply
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Management and control of patients with type 2 diabetes mellitus in Lebanon: results from the International Diabetes Management Practices Study (IDMPS)
The diet composition and nutritional knowledge of patients with anorexia nervosa
Physoporella croatica Herak, 1958 of the Slovak karst Anisian (Slovakia, the West Carpathians Mts.)
Bright lights, big noise. How effective are vehicle warning systems?
Ein Plesiosaurier-Rest mit Magensteinen aus mittlerem Lias von Quedlinburg
Incidence of Chlamydia trachomatis in patients with sterility
Monster soup: the microscope and Victorian fantasy
Preliminary tests with residual sprays against poultry lice
Duration of the life of plants in phylogeny

Large N-S convergence at the northern edge of the Tibetan Plateau? New Early Cretaceous paleomagnetic data from Hexi Corridor, NW China

Large N-S convergence at the northern edge of the Tibetan Plateau? New Early Cretaceous paleomagnetic data from Hexi Corridor, NW China

Earth and Planetary Science Letters 201(2): 293-307

ISSN/ISBN: 0012-821X

DOI: 10.1016/s0012-821x(02)00722-7

Nine Early Cretaceous paleomagnetic sites have been collected in the Yumen area of the Hexi Corridor (NW China). Magnetic directions isolated at lower temperatures fail the fold test, and lie close to the geocentric axial dipole field direction before tilt correction. High temperature components are carried by magnetite and/or hematite, all with normal polarity, and pass the fold test. The average paleomagnetic pole from the nine sites is at lambda = 75.5 degrees N, phi = 169.9 degrees E (A (sub 95) = 7.7 degrees ). These results are consistent with those from other areas of the North China block (NCB), but significantly different from those from the Qaidam Basin on the southern side of the Qilian Mountains. They suggest that: (1) the Yumen region behaved as a rigid part of the NCB since at least the Early Cretaceous; (2) 740+ or -500 km of north-south directed convergence has taken place between the NCB and Qaidam, within the Qilian Mountains and (3) extrusion of Qaidam was accompanied by a 23+ or -5 degrees relative rotation with respect to North China. This is larger than implied by the maximum left lateral slip on the Altyn Tagh fault system. The same data imply some 1000+ or -800 km of Cenozoic motion between the Tarim and NCB blocks, which were so far believed to have formed a rigid entity since at least the Jurassic. One interpretation could be that all Tarim and Qaidam Cretaceous paleomagnetic samples from red beds, but not those from Yumen and the NCB, suffered significant inclination shallowing, as observed in Cenozoic red beds from Central Asia. So far, we do not find support for this possibility. Possible tectonic interpretations include: (1) the existence of a large, as yet uncharted, tectonic discontinuity between Tarim and the NCB in the vicinity of the desert corridor near 95-100 degrees E longitude; (2) the occurrence of significant deformation within southwestern Tarim, to the north of Yingjisha where paleomagnetic sites were obtained, or (3) persistent clockwise rotation of Tarim with respect to the NCB, for at least 20 Ma, at the rate found for current block kinematics.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 019287755

Download citation: RISBibTeXText

Related references

New paleomagnetic Cretaceous data of eastern Qinghai-Xizang Plateau and Hexi Corridor, China. Reunion Annuelle des Sciences de la Terre 7: 41, 1996

Paleomagnetic dating of the Jiuquan Gravel in the Hexi Corridor; implication on mid-Pleistocene uplift of the Qinghai-Tibetan Plateau. Chinese Science Bulletin 46(23): 2001-2005, 2001

Late Quaternary slip rate of the South Heli Shan Fault northern Hexi corridor, NW China and its implications for northeastward growth of the Tibetan Plateau. Tectonics 32(2): 271-293, 2013

Late Quaternary slip rates of the thrust faults in western Hexi Corridor Northern Qilian Shan, China and their implications for northeastward growth of the Tibetan Plateau. Geosphere 9.2, 2013

Cenozoic multiple-phase tectonic evolution of the northern Tibetan Plateau; constraints from sedimentary records from Qaidam Basin, Hexi Corridor, and Subei Basin, northwest China. American Journal of Science 311.2, 2011

Magnetostratigraphy of sediments from the Yumu Shan, Hexi Corridor and its implications regarding the late Cenozoic uplift of the NE Tibetan Plateau. Quaternary International 236.1-2, 2011

Paleomagnetic results from the Late Permian redbeds along the Hexi Corridor, China. Chinese Science Bulletin 37(17): 1452-1456, 1992

Preliminary Early Cretaceous paleomagnetic results from the Gansu Corridor, China. Earth and Planetary Science Letters 129(1-4): 217-232, 1995

Paleomagnetic constraints on the tectonic relationship between the Alashan/ Hexi Corridor terrane and the North China Block. Geophysical Research Letters 26(6): 787-790, 1999

Contribution of dust in northern China to PM 10 concentrations over the Hexi corridor. Science of the Total Environment 660: 947-958, 2019

Northeastward growth of the Tibet Plateau deduced from balanced reconstruction of two depositional areas; the Qaidam and Hexi Corridor basins, China. Tectonics: 823-842, 1998

Cretaceous to Cenozoic evolution of the northern Lhasa Terrane and the Early Paleogene development of peneplains at Nam Co, Tibetan Plateau. Journal of Asian Earth Sciences 70-71: 79-98, 2013

Early wheat in China: Results from new studies at Donghuishan in the Hexi Corridor. Holocene 20(6): 955-965, 2010

The evolution and hydrocarbon potential of lacustrine systems in the Minle and Chaoshui Basins of the Hexi Corridor, northern China. Pages 222-227:, 1995

Cenozoic clockwise rotation of the Chuan Dian Fragment, southeastern edge of the Tibetan Plateau: Evidence from a new paleomagnetic study. Journal of Geodynamics 112: 46-57, 2017