Terrigenous Fe input and biogenic sedimentation in the glacial and interglacial equatorial Pacific Ocean

Journal Article · Fri Dec 01 04:00:00 EST 1995 · Global Biogeochemical Cycles

DOI:https://doi.org/10.1029/95GB02833· OSTI ID:244079

Murray, R W ^[1]; Leinen, M; Knowlton, C W ^[2]

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1. Boston Univ., MA (United States)
2. Univ. of Rhode Island, Narragansett, RI (United States); and others

This study was performed to determine the relationship of particulate iron from land erosion to the accumulation of biogenic matter in the equatorial Pacific Ocean. Sediment cores representing the last six glacial-interglacial cycles and previously published mineralogic records were used as data input. Total iron, terrigenous, and biogenic components were determined for three sediment cores. The study determined that there is no relationship between terrigenous iron input and sedimentary carbon sequestering. This is based on chemical, spectral, and stratigraphic anlyses which showed: (1) no consistent pattern of terrigenous input during glacial or interglacial periods, (2) a close relationshipe between the accumulation of particulate iron and the accumulation of terrigenous matter, (3) no coherent spectral correlations between glacial periodicity and iron input, (4) an inverse correlation of iron input and calcium carbonate, and (5) no spectral or linear relationship between iron accumulation and calcium carbonate, organic carbon, or opal. 55 refs., 6 figs., 3 tabs.

• OSTI ID: 244079
• Journal Information: Global Biogeochemical Cycles, Journal Name: Global Biogeochemical Cycles Journal Issue: 4 Vol. 9; ISSN GBCYEP; ISSN 0886-6236
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CARBON
CORRELATIONS
EQUATOR
GEOLOGIC HISTORY
IRON
OCEANIC CRUST
PACIFIC OCEAN