Helium and thorium isotope constraints on African dust transport to the Bahamas over recent millennia
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- 作者：Christopher T. Hayesa ; b ; Christopher.t.hayes@usm.edu" class="auth_mail" title="E-mail the corresponding author ; David McGeea ; Sujoy Mukhopadhyayc ; Edward A. Boylea ; Adam C. Maloofd
- 关键词：aerosols ; mineral dust ; thorium isotopes ; helium isotopes ; Anthropocene ; Little Ice Age
- 刊名：Earth and Planetary Science Letters
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：457
- 期：Complete
- 页码：385-394
- 全文大小：1241 K
文摘
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Dust deposition proxies in Bahamas tidal flat cores covering 2000 yr vary by less than 20% (RSD).
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Sedimentary 230Th is developed as a normalization factor in shallow, tidal flat sediments.
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Dust flux variations inferred from 3He-normalized 4He fluxes and 230Th-normalized 232Th agree within uncertainties.