MIAO Xiao dong, SUN You bin, LU Hua yu. Spatial Variation of Grain Size of the Late Pliocene‘Red Clay',Chinese Loess Plateau[J]. Acta Sedimentologica Sinica, 2001, 19(2): 182-185.
Citation:
MIAO Xiao dong, SUN You bin, LU Hua yu. Spatial Variation of Grain Size of the Late Pliocene‘Red Clay',Chinese Loess Plateau[J]. Acta Sedimentologica Sinica, 2001, 19(2): 182-185.
Spatial Variation of Grain Size of the Late Pliocene‘Red Clay',Chinese Loess Plateau
1 Institute of Earth Environment, State key Laboratory of Loess and Quaternary Geology, CAS, Xi'an 710054;
2 Institute of Oceanology, CAS, Qingdao Shandong 266071
Received Date: 2000-11-21
Rev Recd Date:
2001-01-11
Abstract
The Tertiary‘Rcd Clay' deposit in Chincsc Loess Plateau has attracted considerable research interests in recent wars as it may provide the information of palcoclimatc in Northern China. The evidences from sedimentology, geochemistry, gcomorphology and field survcv indicate that the‘Rcd Clay' may he of colain origin the same as the overlying loess.Howcver, it is controversial on which wind svstcm transported the deposit. In this paper the grain size of hulk samples and chcmicallv isolated quartzes from‘Rcd Clay' of the late Pliocene are investigated.The samples were taken from six locations spanning 550 km from the north to the south in the Loess Plateau.The results show that the mean sizes of both hulk and quartz samples decease southwards so does the coarse-faction content(>42μm % and>30μm%).Moreover the‘Rcd Clay' samples include a great deal of particles more than 20μm,which was proved to he transported onlv by suhacrial wind.These therefore suggest that it is mainly the northern suhacrial wind rather than the supernal wind that transported the dust of‘Rcd Clay'.The spatial distribution of‘Rcd Clav' is comparable to that of overlying colian locss} which proves the‘Rcd Clay' may he formed in a little hit dry environment but it is not so dry as to the environment the loess deposited.
1 Teilhard C P，Young C C. Preliminary observation on the pre-loessic and post-Ponian Formation in the western Shanxi and northern Shanx[i J]. Memoir Geological Survey China，Ser. A，1930，8：1 ~ 54
5 Liu X M，Liu T S，Susceptibiiity anisotropy of Chinese ioess and its origin and significance on Ouaternary Geoiogy[J]. Sci. China，Ser. B，1989，（4）：441 ~ 448
6 Ding Z L，Sun J M，Liu T S，Zhu R X，Yang S L and Guo B. Wind-biown origin of the Piiocene 'Red Ciay'formation in the centrai Loess Piateau，China[J]. Earth and Pianetary Science Letters，1998，161：135 ~ 143
14 Xiao J L，Porter S C，An Z S，Kumai H，Yoshikawa S. Grain size of guartz as an indicator of winter monsoon strength on the Loess Piateau of Centrai China during the iast 130，000yr [J]，Ouaternary Research，1995，43：22 ~ 29
17 Pye K. Aeoiian dust and dust deposi[t M]. Academic Press，1987.1 ~ 56
18 孙永传，李惠生. 碎屑岩沉积相与沉积环境[M]. 北京：地质出版社，1986.65 ~ 81
19 Sun D H，Liu T S，Chen M Y，An Z S，Shaw J. Magnetostratigraphy and paieociimate of 'Red Ciay'seguences from Chinese Loess Piateau[J]. Sciencein China（D），1997，40（4）：337 ~ 343
20 Lu H Y，Liu X D，Zhang F O，An Z S，Dodson J. Astronomicai caiibration of ioess-paieosoi deposits at Luochuan，centrai Chinese Loess Piateau[J]. Paiaeogeography，Paiaeociimatoiogy，Paiaeoecoiogy，1999，154：237~ 246
Abstract: The Tertiary‘Rcd Clay' deposit in Chincsc Loess Plateau has attracted considerable research interests in recent wars as it may provide the information of palcoclimatc in Northern China. The evidences from sedimentology, geochemistry, gcomorphology and field survcv indicate that the‘Rcd Clay' may he of colain origin the same as the overlying loess.Howcver, it is controversial on which wind svstcm transported the deposit. In this paper the grain size of hulk samples and chcmicallv isolated quartzes from‘Rcd Clay' of the late Pliocene are investigated.The samples were taken from six locations spanning 550 km from the north to the south in the Loess Plateau.The results show that the mean sizes of both hulk and quartz samples decease southwards so does the coarse-faction content(>42μm % and>30μm%).Moreover the‘Rcd Clay' samples include a great deal of particles more than 20μm,which was proved to he transported onlv by suhacrial wind.These therefore suggest that it is mainly the northern suhacrial wind rather than the supernal wind that transported the dust of‘Rcd Clay'.The spatial distribution of‘Rcd Clav' is comparable to that of overlying colian locss} which proves the‘Rcd Clay' may he formed in a little hit dry environment but it is not so dry as to the environment the loess deposited.
MIAO Xiao dong, SUN You bin, LU Hua yu. Spatial Variation of Grain Size of the Late Pliocene‘Red Clay',Chinese Loess Plateau[J]. Acta Sedimentologica Sinica, 2001, 19(2): 182-185.
Citation:
MIAO Xiao dong, SUN You bin, LU Hua yu. Spatial Variation of Grain Size of the Late Pliocene‘Red Clay',Chinese Loess Plateau[J]. Acta Sedimentologica Sinica, 2001, 19(2): 182-185.
1 Teilhard C P，Young C C. Preliminary observation on the pre-loessic and post-Ponian Formation in the western Shanxi and northern Shanx[i J]. Memoir Geological Survey China，Ser. A，1930，8：1 ~ 54
5 Liu X M，Liu T S，Susceptibiiity anisotropy of Chinese ioess and its origin and significance on Ouaternary Geoiogy[J]. Sci. China，Ser. B，1989，（4）：441 ~ 448
6 Ding Z L，Sun J M，Liu T S，Zhu R X，Yang S L and Guo B. Wind-biown origin of the Piiocene 'Red Ciay'formation in the centrai Loess Piateau，China[J]. Earth and Pianetary Science Letters，1998，161：135 ~ 143
14 Xiao J L，Porter S C，An Z S，Kumai H，Yoshikawa S. Grain size of guartz as an indicator of winter monsoon strength on the Loess Piateau of Centrai China during the iast 130，000yr [J]，Ouaternary Research，1995，43：22 ~ 29
17 Pye K. Aeoiian dust and dust deposi[t M]. Academic Press，1987.1 ~ 56
18 孙永传，李惠生. 碎屑岩沉积相与沉积环境[M]. 北京：地质出版社，1986.65 ~ 81
19 Sun D H，Liu T S，Chen M Y，An Z S，Shaw J. Magnetostratigraphy and paieociimate of 'Red Ciay'seguences from Chinese Loess Piateau[J]. Sciencein China（D），1997，40（4）：337 ~ 343
20 Lu H Y，Liu X D，Zhang F O，An Z S，Dodson J. Astronomicai caiibration of ioess-paieosoi deposits at Luochuan，centrai Chinese Loess Piateau[J]. Paiaeogeography，Paiaeociimatoiogy，Paiaeoecoiogy，1999，154：237~ 246
Catalog
Export File
Citation
MIAO Xiao dong, SUN You bin, LU Hua yu. Spatial Variation of Grain Size of the Late Pliocene‘Red Clay',Chinese Loess Plateau[J]. Acta Sedimentologica Sinica, 2001, 19(2): 182-185.
MIAO Xiao dong, SUN You bin, LU Hua yu. Spatial Variation of Grain Size of the Late Pliocene‘Red Clay',Chinese Loess Plateau[J]. Acta Sedimentologica Sinica, 2001, 19(2): 182-185.
DownLoad: