Changes in terrestrial ecosystem since 30 Ma in East Asia; stable isotope evidence from black carbon in the South China Sea

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doi: 10.1130/G19992.1
Author(s): Jia Guodong; Peng Ping'an; Zhao Quanhong; Jian Zhimin
Author Affiliation(s): Primary:
Chinese Academy of Sciences, Guangzhou Institute of Geochemistry, Guangzhou, China
Tongji University, China
Volume Title: Geology (Boulder)
Source: Geology (Boulder), 31(12), p.1093-1096. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613 CODEN: GLGYBA
Note: In English. 41 refs.; illus., incl. sketch map
Summary: A 30 m.y. stable isotopic record of marine-deposited black carbon from regional terrestrial biomass burning from the northern South China Sea reveals photosynthetic pathway evolution for terrestrial ecosystems in the late Cenozoic. This record indicates that C3 plants negatively adjusted their isotopic discrimination and C4 plants appeared gradually as a component of land vegetation in East Asia since the early Miocene, a long time before sudden C4 expansion occurred during the late Miocene to the Pliocene. The changes in terrestrial ecosystems with time can be reasonably related to the evolution of East Asian monsoons, which are thought to have been induced by several intricate mechanisms during the late Cenozoic and could contribute significantly to the post-Miocene marine carbonate isotope decline.
Year of Publication: 2003
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Biologic evolution; Biostratigraphy; C-13/C-12; Carbon; Cenozoic; Ecosystems; Isotope ratios; Isotopes; Leg 184; Mass spectra; Miocene; Neogene; North Pacific; Northwest Pacific; ODP Site 1147; ODP Site 1148; Ocean Drilling Program; Oligocene; Pacific Ocean; Paleoclimatology; Paleoecology; Paleoenvironment; Paleogene; Photochemistry; Photosynthesis; Plantae; Pliocene; Quaternary; South China Sea; Spectra; Stable isotopes; Terrestrial environment; Tertiary; West Pacific
Coordinates: N185010 N185010 E1163356 E1163356
N185007 N185007 E1163317 E1163317
Record ID: 2004003411
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