Locating cryptotephra in lake sediments using fluid imaging technology
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- 作者：Robert M. D’Anjou ; Nicholas L. Balascio ; Raymond S. Bradley
- 关键词：Tephra ; Cryptotephra ; Lake sediment ; Fluid imaging ; Particle recognition ; FlowCAM
- 刊名：Journal of Paleolimnology
- 出版年：2014
- 出版时间：October 2014
- 年：2014
- 卷：52
- 期：3
- 页码：257-264
- 全文大小：705 KB
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Nicholas L. Balascio (1) (2)
Raymond S. Bradley (1)
1. Department of Geosciences, Climate Systems Research Center, University of Massachusetts Amherst, Amherst, MA, 01003, USA
2. Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, 10964, USA - ISSN：1573-0417
文摘
We report a new approach to locate and quantify cryptotephra in sedimentary archives using a continuously-imaging Flow Cytometer and Microscope (FlowCAM?). The FlowCAM rapidly photographs particles flowing in suspension past a microscope lens and performs semi-automated analysis of particle images. It has had primarily biological applications, although the potential sedimentological applications are numerous. Here we test the ability of this instrument to image irregularly shaped, vesicular glass shards and to screen sediment samples for the presence of cryptotephra. First, reference samples of basalt and rhyolite tephra (sieved