Regional tectonic setting of Hong Kong; implications of new gravity models

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doi: 10.1144/gsjgs.154.6.1021
Authors:Fletcher, C. J. N.; Campbell, S. D. G.; Carruthers, R. M.; Busby, J. P.; Lai, K. W.
Author Affiliations:Primary:
Hong Kong Geological Survey, Geotechnical Engineering Office, Kowloon, China
Other:
British Geological Survey, United Kingdom
Volume Title:geology of Hong Kong
Volume Authors:Fletcher, C. J. N., editor
Source:Journal of the Geological Society of London, Vol.154(Part 6), p.1021-1030; Geology of Hong Kong, Hong Kong, China, Jan. 22, 1997, edited by C. J. N. Fletcher. Publisher: Geological Society of London, London, United Kingdom. ISSN: 0016-7649
Publication Date:1997
Note:In English. 51 refs.; illus., incl. 1 table, geol. sketch map
Summary:The proposed gravity model for Hong Kong consists of a heterogeneous upper crust underlain by middle to lower crust composed of a felsic Archaean segment ∼ 25 km wide, flanked by more mafic Proterozoic crust. Middle to lower crustal discontinuities are associated with a major shear zone within the Cathaysia Block that has similar dimensions to transcratonic structures in other Precambrian shield areas. The geological development of Hong Kong and neighbouring SE China has largely been controlled by periodic reactivation of this deep crustal shear zone since the late Neoproterozoic. [R.A.H.]
Subjects:Archean; Bouguer anomalies; Crust; Discontinuities; Faults; Geophysical methods; Geophysical profiles; Geophysical surveys; Gravity anomalies; Gravity methods; Gravity profiles; Isotope ratios; Lower crust; Models; Precambrian; Proterozoic; Reactivation; Shear zones; Surveys; Tectonics; Upper crust; Upper Precambrian; Asia; China; Far East; Hong Kong
Coordinates:N220500 N223500 E1143000 E1135000
Abstract Numbers:98M/1895
Record ID:1998012763
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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