Research Project
Grant-in-Aid for Young Scientists (B)
In the eastern North China Craton (NCC), basement gneisses are covered by poorly dated Proterozoic sediments. This study reports new zircon data from the Jixian area to constrain the protolith age of basement gneisses, the detrital ages of cover clastic sediments, and the age of a post-tectonic intrusive granite. The cores in zircons have 207Pb/206Pb peak ages at 2520 Ma that constrain the minimum protolith age of the gneiss, whereas the rims have a wide 207Pb/206Pb age range from ca. 2500 Ma to 1800 Ma. This reflects a Paleoproterozoic overprint on the basement of the NCC.Overlying clastic sediments mainly contain 2.5-2.7 Ga zircons derived from the basement rocks. 2200 Ma detrital zircons were no doubt derived from 2200 Ma igneous rocks, probably from the southern NCC. The intrusive granite contains euhedral zircon grains with clear oscillatory zones that yield a Concordia age of 205.6 ± 1.1 Ma, and was likely generated during early Mesozoic delamination of the eastern NCC.
All 2016 2015 2014 Other
All Int'l Joint Research (3 results) Journal Article (26 results) (of which Int'l Joint Research: 12 results, Peer Reviewed: 26 results, Acknowledgement Compliant: 1 results) Presentation (44 results) (of which Int'l Joint Research: 7 results, Invited: 2 results) Remarks (4 results)
Palaeogeography, Palaeoclimatology, Palaeoecology
Volume: 459 Pages: 182-197
doi.org/10.1016/j.palaeo.2016.07.008
Geoscience Frontiers
Volume: 7(4) Pages: 663-671
doi:10.1016/j.gsf.2015.07.008
Volume: 449 Pages: 397-420
doi.org/10.1016/j.palaeo.2016.01.039
Precambrian Research
Volume: 278 Pages: 218-243
doi:10.1016/j.precamres.2016.03.018
Progress on Earth and Planetary Sciences
Volume: 3(35) Pages: 1-14
doi.10.1186/s40645-016-0111-8
Volume: 6(1) Pages: 121-136
doi:10.1016/j.gsf.2014.05.005
G-Cubed (Geochemistry, Geophisics, Geosystems)
Volume: 16(1) Pages: 112-125
doi:10.1002/2014GC005508
分析化学
Volume: 64(5) Pages: 341-348
Chemical Geology
Volume: 401 Pages: 126-139
doi:10.1016/j.chemgeo.2015.02.022
Volume: 263 Pages: 19-42
doi:10.1016/j.precamres.2015.03.007
Volume: 403 Pages: 58-73
doi:10.1016/j.chemgeo.2015.03.007
Geochimica et Cosmochimica Acta
Volume: 156 Pages: 173-193
doi:10.1016/j.gca.2015.02.025
Tectonophysics
Volume: 662(1) Pages: 312-327
doi:10.1016/j.tecto.2015.04.014
Volume: 662(1) Pages: 195-207
doi:10.1016/j.tecto.2015.04.016
Lithos
Volume: 228-229 Pages: 43-54
doi:10.1016/j.lithos.2015.04.005
Volume: 662(1) Pages: 40-66
doi:10.1016/j.tecto.2015.05.003
Volume: 662(1) Pages: 472-480
doi: 10.1016/j.tecto.2015.08.002
Volume: 662(1) Pages: 243-255
doi:10.1016/j.tecto.2015.08.015
Gondwana Research
Volume: 25 Pages: 1070-1089
doi:10.1016/j.gr.2013.03.008
Volume: 25 Pages: 910-944
doi:10.1016/j.gr.2013.03.012
Volume: 25 Pages: 945-965
doi:10.1016/j.gr.2013.03.013
Volume: 25 Pages: 1027-1044
doi:10.1016/j.gr.2013.05.001
Volume: 25 Pages: 1057-1069
doi:10.1016/j.gr.2013.06.002
Volume: 25 Pages: 1090-1107
doi:10.1016/j.gr.2013.08.001
Volume: 196-197 Pages: 301-320
doi:10.1016/j.lithos.2014.02.010
Volume: 623 Pages: 136-146
doi:10.1016/j.tecto.2014.03.026
https://y-sawaki.jimdo.com/
http://t2r2.star.titech.ac.jp/cgi-bin/researcherpublicationlist.cgi?q_researcher_content_number=CTT100511199&q_year_from=2016&q_year_to=2016&tab_yf=2017
http://t2r2.star.titech.ac.jp/cgi-bin/researcherinfo.cgi?q_researcher_content_number=CTT100511199
http://www.geo.titech.ac.jp/lab/maruyama/maruyamalab/member12/sawaki.html