Login
Registered 中文|English
 
Home Data directory Data search Data released Membership center Special services About us
 
   
   
  Time: 8:30-16:30
TEL:029-62336215
Email:yanlibin@ieecas.cn
Link
NCAR
CCR Wisconsin-Madison
China Meteorological Dat
Climate Modeling (IEECAS
Paleoclimatology Data (N
World Data System
Earth Data Sharing (Chin
SKLLQG
Detailed metadata
 
Loess magnetic susceptibility and grain size records on Chinese Loess Plateau since 3.6Ma
CTR :460
Key words Chinese Loess Plateau; 3.6Ma; susceptibility; grain size
Relevant data Magnetic susceptibility and grain size records from two continuous red-clay and loess–palaeosol sequences on the Chinese Loess Plateau have been generated to investigate the evolution and variability of the East Asian monsoon (EAM) during the late Pliocene and Pleistocene. Tuning the grain size records to orbital obliquity and precession yields an improved astronomical timescale for the loess–palaeosol sequence (0–2.6 Ma), and an extended age model for the upper red-clay formation (2.6–3.6 Ma). This timescale indicates older ages for a number of the magnetic polarity boundaries, consistent with lock-in depth offsets in loess sequences. Good site-to-site correlation enables generation of stacked grain size and susceptibility records spanning the last 3.6 Myr. These records indicate that monsoon evolution since the late Pliocene can be subdivided into three phases: 0–1.25, 1.25–2.72 and 2.72–3.4 Ma; each phase is characterized by unique amplitude and frequency characteristics for both summer monsoon (magnetic susceptibility) and winter monsoon (grain size). Spectral analyses of the stacked monsoon proxies indicate that characteristics of both the summer and winter monsoons are dominated mainly by variance in the eccentricity (410- and 100-kyr), obliquity (41-kyr) and precession (23- and 19-kyr) bands over the past 3.4 Myr, implying a non-linear response of the long-term EAM evolution to orbital and glacial forcing.
Data shows that
Sun, Y., S.C. Clemens, Z. An, and Z. Yu. 2006. Astronomical timescale and palaeoclimatic implication of stacked 3.6-Myr monsoon records from the Chinese Loess Plateau. Quaternary Science Reviews, Vol. 25 pp. 33–48.
Data collection format xls
Data classification Geological record - Terrestrial environmental records
Data source
personal contact
Related to download [Download attachments]
Contact card
Full name: 
Tibet Email: yanlibin@ieecas.cn
Unit: Institute of Earth Environment Phone: 02962336215
Related data
High-resolution peat reco
Oxygen isotope compositio
Red Clay to loess-palaeos
Variation of Zr/Rb ratios
Geochemical evidence for
Assemblage characteristic
Geochemical and magnetic
A red clay sequence on th
Sr-Nd-Pb isotopic composi
A peat sequence from the
Home Data directory Data search Data released Membership center Special services About us
All rights reserved: east Asia ancient environmental science database
Contact phone: 029-62336215 E - mail: yanlibin@ieecas.cn fax: 029-62336215 technical support: state in the network
Disclaimer: this website content may be reproduced without written authorization and mirrors