SCIENTIA GEOGRAPHICA SINICA ›› 2017, Vol. 37 ›› Issue (2): 301-310.doi: 10.13249/j.cnki.sgs.2017.02.017

• Orginal Article • Previous Articles     Next Articles

Chronology and Environmental Significance of Old Red Sand in South China:Take the Old Red Sand in Qingfeng, Fujian as An Example

Jianhui Jin1,2,3(), Zhizhong Li1,2,3(), Guoliang Lei1,2,3, Zhiyong Ling4, Feng Jiang2, Jianling Shen2, Xiuming Liu1,2,3   

  1. 1.Institute of Geography, Fujian Normal University, Fuzhou 350007,Fujian,China
    2.School of Geography Science, Fujian Normal University, Fuzhou 350007, Fujian,China
    3. Key Laboratory of Humid Subtropical Ecosystem and Geography, Ministry of Education, Fuzhou 350007, Fujian,China
    4.Qinghai Institute of Salt Lake, Chinese Academy of Sciences, Xining 810008,Qinghai,China
  • Received:2016-01-05 Revised:2016-04-20 Online:2017-02-25 Published:2017-02-25
  • Supported by:
    National Natural Science Foundation of China(41301012, 41271031), NSFC-Fujian Province Untied Foundation(U1405231)

Abstract:

In this article, luminescence chronology of ‘Old Red Sand’(ORS) in Haitan Island are discussed in Fujian Province. Combined with the published OSL data, the development process of ORS and the relationship between the process and the change of sea-level and East Asia Monsoon(EAM) are discussed on the standard chronology. The results show that, the development age of QFS section is 110-33 ka, of which the initial development age extend to the Last Interglacial period which mainly covers Marine Isotope Stage(MIS)5c-MIS3, and there are 4 stages of rapid accumulation. We hold opinion that the conclusions of other researches, who consider ORS is the aeolian sediment since the last glacial period, should be corrected. 2) The development process of ORS in South China is closely tied with the change of regional sea-level. ORS of South China is broadly forming at the Last Interglacial period and the Last glacial period, of which high (the height of sea-level is between -70 m and -50 m) or higher(the height of sea-level is more than -50 m) sea-level is one of important premises. Synthetic impact of regional crustal uplift and sea-level change creates the diversity of sedimentary rate of ORS of South China: there is a rapid accumulation in upstate firstly at the high or higher sea-level period of the regressive process, and there is a rapid accumulation in south area firstly at the high or higher sea-level period of the process of marine transgression. At the same time, its a remarkable face that the sediment is absent at the period of Last Glacial Maximum(LGM) (the height of sea-level is under -70 m ). 3) The depth-age pattern of ORS reflects not merely the control action of solar radiation on east Asian winter monsoon but also the change of global ice volume which is the response of solar radiation. 4) The variation of ORS material source of South China are changed with glacial-interglacial cycle, and the main part of ORS is the regional response to the global climate change, especially the East Asia Winter Monsoon(EAWM), meanwhile there are secondary response process of global sea-level change and regional structure. Sedimentary rate of ORS mainly embodied the double restriction of climate and sea level changes on conveying of material source.

Key words: Old Red Sand, OSL dating, dose rate, sea-level

CLC Number: 

  • P534.63