Sato, Tokiyuki (2010): Emergence of the Isthmus of Panama links to Northern Hemisphere glaciation; relation to new definition of the "Quaternary"

Leg/Site/Hole:
IODP 303
ODP 145
ODP 151
IODP 303 U1308
ODP 145 881
ODP 145 882
ODP 145 883
ODP 145 887
ODP 151 911
Identifier:
2011-027988
georefid
Creator:
Sato, Tokiyuki
Akita University, Institute of Applied Earth Sciences, Akita, Japan
author
Identification:
Emergence of the Isthmus of Panama links to Northern Hemisphere glaciation; relation to new definition of the "Quaternary"
2010
In: Ueki, Takeyuki (prefacer), Endo, Kunihiko (prefacer), The 2009 symposium on Environmental change and tectonics around the base of the newly defined Quaternary
Japan Association for Quaternary Research, Tokyo, Japan
49
5
283-292
Calcareous nannofossil assemblages found in samples from the Arctic and North Pacific Oceans indicate that heavy Northern Hemisphere glaciation occurred in 2.75 Ma, based on the abundant occurrence of cold water nanno-fossil Coccolithus pelagicus and the drastic increase of ice rafted debris in these areas. Final closure of the Central American Sea Way, indicated by the biogeography of calcareous nannofossils in the Caribbean and the eastern Pacific, occurred at this time. These results indicate that the emergence of the Isthmus of Panama resulted in the Northern Hemisphere glaciation, and also led to both the Quaternary-style ocean circulation and nannofossil biogeography in 2:75 Ma.
Japanese
Coverage:Geographic coordinates:
North:80.2829
West:-148.2647East: 167.3600
South:47.0606
Quaternary geology; algae; Arctic Ocean; assemblages; Atlantic Ocean; biogeography; Cenozoic; Coccolithophoraceae; Coccolithus; Coccolithus pelagicus; East Pacific; Emperor Seamounts; Expedition 303; Expeditions 303/306; glaciation; Integrated Ocean Drilling Program; IODP Site U1308; Isthmus of Panama; Leg 145; Leg 151; lower Pleistocene; marine environment; microfossils; Mid-Atlantic Ridge; Neogene; North Atlantic; North Pacific; Northeast Atlantic; Northeast Pacific; Northwest Pacific; Ocean Drilling Program; ODP Site 881; ODP Site 882; ODP Site 883; ODP Site 887; ODP Site 911; Pacific Ocean; paleoclimatology; paleoenvironment; paleogeography; Plantae; Pleistocene; Pliocene; quantitative analysis; Quaternary; Tertiary; upper Pliocene; West Pacific; Yermak Plateau;
.