Magmatic and metamorphic events during the early Paleozoic Wuyi-Yunkai orogeny, southeastern South China: New age constraints and pressure-temperature conditions

2009 ◽  
Vol 122 (5-6) ◽  
pp. 772-793 ◽  
Author(s):  
Z. X. Li ◽  
X. H. Li ◽  
J. A. Wartho ◽  
C. Clark ◽  
W. X. Li ◽  
...  
Keyword(s):  
South China ◽  
New Age ◽  
Early Paleozoic ◽  
Temperature Conditions ◽  
Age Constraints

scholarly journals New age constraints for the maximum extent of the last British-Irish Ice Sheet (NW sector)

2012 ◽  
Vol 28 (1) ◽  
pp. 2-7 ◽  
Author(s):  
J. D. Everest ◽  
T. Bradwell ◽  
M. Stoker ◽  
S. Dewey
Keyword(s):  
Ice Sheet ◽  
New Age ◽  
Maximum Extent ◽  
Age Constraints

The Mesoproterozoic Baoban Complex, South China: A missing fragment of western Laurentian lithosphere

2019 ◽  
Vol 132 (7-8) ◽  
pp. 1404-1418 ◽  
Author(s):  
Ya-Jun Xu ◽  
Peter A. Cawood ◽  
Hang-Chuan Zhang ◽  
Jian-Wei Zi ◽  
Jin-Bo Zhou ◽  
...  
Keyword(s):  
South China ◽  
Detrital Zircon ◽  
Hainan Island ◽  
New Age ◽  
Metasedimentary Rocks ◽  
Basement Rocks ◽  
Cathaysia Block ◽  
Two Peaks

Abstract New age data for the Baoban Complex, South China establishes that it lay outboard of western Laurentia in the early Mesoproterozoic but was not part of the Cathaysia Block, with which it is traditional linked, until the mid-Paleozoic. Our geochronology data for detrital zircon and authigenic monazite grains from metasedimentary rocks indicate accumulation between ca. 1.55 Ga and 1.45 Ga for the Gezhencun succession of the Baoban Complex and ca. 1.45 Ga and 1.30 Ga for the Ewenling succession. The former unit is dominated by detrital zircon populations between 1900 Ma and 1500 Ma with two peaks at 1780 Ma and 1580 Ma. The Ewenling succession has detrital zircon peaks at 1720 Ma and 1450 Ma. Newly discovered gneissic granites were emplaced at 1550 Ma and intruded by 1450 Ma leucogranite dykes that are coeval with 1460–1430 Ma bimodal magmatism. The whole Baoban Complex was metamorphosed over the range of 1.3–0.9 Ga based on ages of authigenic zircon and monazite. Depositional ages of metasedimentary rocks are coeval with successions of the Belt-Purcell Basin, western Laurentia. Detrital zircon from the two regions have similar age populations and Lu-Hf compositions, and display a synchronous provenance shift at ca. 1.45 Ga. Basement lithologies on Hainan Island range in age from ca. 1.55–1.43 Ga and underwent metamorphism during 1.3–0.9 Ga. This is younger than basement rocks on the mainland of the Cathaysia Block in South China, suggesting the two regions are spatially unrelated at this time and hence the Mesoproterozoic record of the island cannot constrain the location of the Cathaysia Block in the Nuna and Rodinia supercontinents.

Age constraints of the Hungshihyen Formation (Early to Middle Ordovician) on the western margin of the Yangtze Platform, South China: New insights from chitinozoans

Palaeoworld ◽  
2020 ◽  
Vol 29 (1) ◽  
pp. 66-74 ◽  
Author(s):  
Yan Liang ◽  
Guang-Xu Wang ◽  
Thomas Servais ◽  
Rong-Chang Wu ◽  
Jaak Nõlvak ◽  
...  
Keyword(s):  
South China ◽  
Yangtze Platform ◽  
Western Margin ◽  
Middle Ordovician ◽  
Age Constraints

New age constraints for hominid footprints found on Jeju Island, South Korea

2010 ◽  
Vol 37 (12) ◽  
pp. 3338-3343 ◽  
Author(s):  
Cheong Bin Kim ◽  
Jeong Yul Kim ◽  
Kyung Soo Kim ◽  
Hyoun Soo Lim
Keyword(s):  
South Korea ◽  
New Age ◽  
Jeju Island ◽  
Age Constraints
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