CORRELATION OF THE MAGNETIC-SUSCEPTIBILITY STRATIGRAPHY OF CHINESE LOESS AND THE MARINE OXYGEN-ISOTOPE RECORD - CHRONOLOGICAL AND PALEOCLIMATIC IMPLICATIONS

被引:88
作者
BLOEMENDAL, J [1 ]
LIU, XM [1 ]
ROLPH, TC [1 ]
机构
[1] UNIV LIVERPOOL,DEPT EARTH SCI,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND
关键词
D O I
10.1016/0012-821X(95)00016-6
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
The thick deposits of wind-blown silt of the Loess Plateau in central China constitute arguably the most important terrestrial record of the late Pliocene and Pleistocene climate. Magnetic susceptibility stratigraphy has proven extremely useful for quantifying the palaeoclimatic record of Chinese loess, with intervals of high magnetic susceptibility corresponding to warm, humid interglacials and intervals of low susceptibility to cooler, drier glacials. Several workers have noted that the magnetic susceptibility stratigraphy strongly resembles the marine oxygen isotope record, for which a high resolution chronology is available from tuning to the frequencies of Earth orbital parameters. Attempts have been made to correlate the two records statistically and we use this approach to generate a new magnetic susceptibility time series for the central Chinese Loess Plateau. Our results suggest that the two records are sufficiently similar over the interval ca. 0-1.5 My BP for this approach to yield a useful age model for loess accumulation. Spectral analysis of the resulting magnetic susceptibility time series clearly shows that the growth of 100 ky variance, which occurs in the marine oxygen isotope record after about 1 My BP, also occurs synchronously in the magnetic susceptibility record, reinforcing recent suggestions of a strong linkage between the high latitude northern hemisphere and the Asian climate. We also show that a significant improvement in the strength of the loess magnetic susceptibility-marine oxygen isotope correlation occurs after about 1.5 My BP, which corresponds to a significant increase in the rate of sediment accumulation across the Loess Plateau.
引用
收藏
页码:371 / 380
页数:10
相关论文
共 49 条
[1]  
[Anonymous], 2014, VIRTUES HAPPINESS TH, DOI DOI 10.1093/ACPROF:OSO/9780199827367.001.0001
[2]  
[Anonymous], 1968, SPECTRAL ANAL ITS AP
[3]  
[Anonymous], GEOPHYS MONOGR
[4]  
BIRCHFIELD GE, 1982, QUATERNARY RES, V15, P126
[5]   AGE AND PALEOCLIMATIC SIGNIFICANCE OF THE LOESS OF LANZHOU, NORTH CHINA [J].
BURBANK, DW ;
LI, JJ .
NATURE, 1985, 316 (6027) :429-431
[6]   FORCING MECHANISMS OF THE INDIAN-OCEAN MONSOON [J].
CLEMENS, S ;
PRELL, W ;
MURRAY, D ;
SHIMMIELD, G ;
WEEDON, G .
NATURE, 1991, 353 (6346) :720-725
[7]   SENSITIVITY OF ASIAN AND AFRICAN CLIMATE TO VARIATIONS IN SEASONAL INSOLATION, GLACIAL ICE COVER, SEA-SURFACE TEMPERATURE, AND ASIAN OROGRAPHY [J].
DEMENOCAL, PB ;
RIND, D .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1993, 98 (D4) :7265-7287
[8]  
DING ZL, 1992, PALAEOGEOGR PALAEOCL, V94, P223
[9]  
HAHN DG, 1975, J ATMOS SCI, V32, P1515, DOI 10.1175/1520-0469(1975)032<1515:TROMIT>2.0.CO
[10]  
2