Mathematics – Logic
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30shls5x&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 19, pp. HLS 5-1, CiteID 2007, DOI 10.1029/2003GL018187
Mathematics
Logic
Meteorology And Atmospheric Dynamics: Paleoclimatology, Information Related To Geographic Region: Asia, Information Related To Geologic Time: Cenozoic
Scientific paper
The sediment record of the loess-paleosol sequence in the Chinese Loess Plateau reveals a strong relationship between grain size fluctuations and glacial-interglacial cycles documented by marine oxygen isotope variations. However, on tectonic time scales, differences between the loess-paleosol grain size record and the marine oxygen isotope record can be identified. Analytical results from the Baishui, Jingchuan and Lingtai sections show that the grain size of eolian loess, superimposed on a coarsening trend, has two abrupt shifts at about 2.55 and 1.25 Ma, which are followed by significantly damped fluctuations in grain size. This is different from the global oxygen isotope record which demonstrates higher amplitude variations since the late Pliocene-early Pleistocene and lacks analogs of the abrupt shifts. We propose that the progressive uplift of the Tibetan plateau may have forced the regional environmental system across two thresholds at the late Pliocene-early Pleistocene and the middle Pleistocene, respectively, inducing two pulses of climatic and environmental changes over north-western China which are superimposed on the global cooling trend and orbital climate changes.
Ding Z. L.
Jiang Yan Wei
Liu Tung-Sheng
Xiong S. F.
Yang Shaoyue L.
No associations
LandOfFree
Damped fluctuations in Chinese loess grain size does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Damped fluctuations in Chinese loess grain size, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Damped fluctuations in Chinese loess grain size will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-918463