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- W4313561915 endingPage "112" @default.
- W4313561915 startingPage "104" @default.
- W4313561915 abstract "The Humboldt Current System along the Pacific coast of South America creates one of the most productive ecosystems on Earth. To trace the origin of the water masses in this area, we measured neodymium isotope compositions (ԑNd) in tooth enameloid of two genera of coastal sharks from latest Oligocene to early Pleistocene strata in the Pisco and Sacaco basins in southern Peru. Most ԑNd values range from −4 to −1, with a strong negative excursion in the late Miocene (∼8–7 million years ago [Ma]) with values as low as −9.2. The overall trend of the ԑNd values resembles that of equatorial Pacific deep waters, though with an offset of about +2 ԑNd units until about 6 Ma. With a major input of hinterland weathering considered unlikely, we interpret this pattern as reflecting a modern-type upwelling regime, though with a lower contribution of Antarctic waters than today. Starting about 6 Ma, the contribution of Antarctic waters to the upwelling waters increased approximately to present-day levels, coincident with, and possibly driven by, increased Antarctic glaciation and the Andes reaching their present-day elevation, both of which likely enhanced the counter-clockwise circulation in the South Pacific Ocean. The negative excursion of ԑNd values in the Pisco/Sacaco basins ∼8–7 Ma coincides with a late Miocene biogenic bloom in the Pacific Ocean and elsewhere, and with a strongly increased northward bottom current observed on the Nazca Drift System just offshore our sampling area. Thus, the negative excursion of ԑNd values in the Pisco/Sacaco basins likely resulted from a southern sourced input of nutrient-rich, unradiogenic water, which could have been an important contributor to the biogenic bloom." @default.
- W4313561915 created "2023-01-06" @default.
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- W4313561915 creator A5087058992 @default.
- W4313561915 date "2023-04-01" @default.
- W4313561915 modified "2023-10-16" @default.
- W4313561915 title "The late Cenozoic evolution of the Humboldt Current System in coastal Peru: Insights from neodymium isotopes" @default.
- W4313561915 cites W1498587748 @default.
- W4313561915 cites W1526833217 @default.
- W4313561915 cites W1573102634 @default.
- W4313561915 cites W1579624063 @default.
- W4313561915 cites W1857141031 @default.
- W4313561915 cites W1971808434 @default.
- W4313561915 cites W1974616460 @default.
- W4313561915 cites W1977394352 @default.
- W4313561915 cites W1988142639 @default.
- W4313561915 cites W1993761337 @default.
- W4313561915 cites W1998282979 @default.
- W4313561915 cites W2002039102 @default.
- W4313561915 cites W2007652889 @default.
- W4313561915 cites W2010916714 @default.
- W4313561915 cites W2014007554 @default.
- W4313561915 cites W2016010553 @default.
- W4313561915 cites W2019216664 @default.
- W4313561915 cites W2023432998 @default.
- W4313561915 cites W2026901371 @default.
- W4313561915 cites W2031291717 @default.
- W4313561915 cites W2035231167 @default.
- W4313561915 cites W2036260978 @default.
- W4313561915 cites W2036600345 @default.
- W4313561915 cites W2038722956 @default.
- W4313561915 cites W2041940933 @default.
- W4313561915 cites W2048799719 @default.
- W4313561915 cites W2057108646 @default.
- W4313561915 cites W2057487520 @default.
- W4313561915 cites W2059512862 @default.
- W4313561915 cites W2067161541 @default.
- W4313561915 cites W2068348304 @default.
- W4313561915 cites W2069258787 @default.
- W4313561915 cites W2075016206 @default.
- W4313561915 cites W2076319956 @default.
- W4313561915 cites W2076566162 @default.
- W4313561915 cites W2079051716 @default.
- W4313561915 cites W2079639348 @default.
- W4313561915 cites W2087412315 @default.
- W4313561915 cites W2089142058 @default.
- W4313561915 cites W2090545307 @default.
- W4313561915 cites W2091201391 @default.
- W4313561915 cites W2092826858 @default.
- W4313561915 cites W2094518893 @default.
- W4313561915 cites W2094877364 @default.
- W4313561915 cites W2097173076 @default.
- W4313561915 cites W2097401237 @default.
- W4313561915 cites W2100686117 @default.
- W4313561915 cites W2102525915 @default.
- W4313561915 cites W2103643797 @default.
- W4313561915 cites W2105478654 @default.
- W4313561915 cites W2112169783 @default.
- W4313561915 cites W2114365219 @default.
- W4313561915 cites W2115575384 @default.
- W4313561915 cites W2135878067 @default.
- W4313561915 cites W2135976972 @default.
- W4313561915 cites W2142896906 @default.
- W4313561915 cites W2152702123 @default.
- W4313561915 cites W2156061833 @default.
- W4313561915 cites W2161040030 @default.
- W4313561915 cites W2170283812 @default.
- W4313561915 cites W2175381411 @default.
- W4313561915 cites W2248237575 @default.
- W4313561915 cites W2264630388 @default.
- W4313561915 cites W2331526165 @default.
- W4313561915 cites W2358145524 @default.
- W4313561915 cites W2489297706 @default.
- W4313561915 cites W2624931825 @default.
- W4313561915 cites W2742481238 @default.
- W4313561915 cites W2801007223 @default.
- W4313561915 cites W2883125500 @default.
- W4313561915 cites W2883361486 @default.
- W4313561915 cites W2898153370 @default.
- W4313561915 cites W2919355643 @default.
- W4313561915 cites W2920927865 @default.
- W4313561915 cites W2955372305 @default.
- W4313561915 cites W2963908282 @default.
- W4313561915 cites W2966989601 @default.
- W4313561915 cites W2981459348 @default.
- W4313561915 cites W3097093420 @default.
- W4313561915 cites W3115744292 @default.
- W4313561915 cites W3129527519 @default.
- W4313561915 cites W3135324811 @default.
- W4313561915 cites W3159424433 @default.
- W4313561915 cites W3179222497 @default.
- W4313561915 cites W3181209025 @default.
- W4313561915 cites W3205087738 @default.