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Growth ages of ferromanganese crusts from the western and central Pacific: Comparison between nannofossil analysis and 10Be dating.
- Source :
- Chinese Science Bulletin; Dec2006, Vol. 51 Issue 24, p3035-3040, 6p, 3 Charts, 4 Graphs
- Publication Year :
- 2006
-
Abstract
- Based on results of nannofossil analysis and <superscript>10</superscript>Be dating in ferromanganese crusts M1-1 and A1-1 (no nannofossils were found in it), from the western and central Pacific respectively, it is found that the crust growth ages from nannofossil biostratigraphy agree well with those based on <superscript>10</superscript>Be isotope analysis. Both crusts have three growth layers, and the oldest layer was deposited in Miocene at about 12.80 Ma. The maximum, minimum, and average growth rates of crust A1-1 (from the central Pacific) are 8.11, 1.92 and 3.47 mm/Ma, and those of crust M1-1 (from the western Pacific) are 2.93, 0.47, and 0.94 mm/Ma. [ABSTRACT FROM AUTHOR]
- Subjects :
- NANNOFOSSILS
FERROMANGANESE
MIOCENE stratigraphic geology
ARCHAEOLOGICAL dating
Subjects
Details
- Language :
- English
- ISSN :
- 10016538
- Volume :
- 51
- Issue :
- 24
- Database :
- Complementary Index
- Journal :
- Chinese Science Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 23960600
- Full Text :
- https://doi.org/10.1007/s11434-006-2193-y