Sirius Group Microfossil Analysis of Occurrence and Assemblages, Dominion Range and Shackleton Shackleton Glacier Region

该奖项为实验室制备、硅藻提取和从东南极洲多明尼安山脉采集的样品进行分析提供支持。南极横贯山脉天狼星群冰川沉积物中海洋硅藻化石的存在引起了对其起源和意义的大量讨论。风沙搬运（本地的和长距离的）、海洋沉积物的冰下搬运和深海陨石抛射物的大气搬运都是硅藻的来源。在文献中有描述。组合的组成、大小、年龄和其他特征可以用来分离这些不同的来源。在奥利弗布拉夫斯收集的样品提供了丰富的地层学和古生物学信息。这种材料是迈耶沙漠地层的一部分，被认为是天狼星集团最重要的矿床之一。将进行几项测试，以检查这些地层和不同年龄景观的地表沉积物中硅藻（已知存在）的出现情况。该项目将验证硅藻的存在，并将检查它们在垂直露头1米深的几个剖面上的分布。这项研究应该有助于回答有关硅藻的来源及其运输机制的问题

This award provides support for laboratory preparation, diatom extraction and analysis from samples collected in the Dominion Range of East Antarctica. The presence of marine fossil diatoms in glacial deposits of the Sirius Group in the Transantarctic Mountains has led to considerable discussion regarding their origin and significance. Eolian transport (both local and long distance), sub-glacial transport from marine deposits, and atmospheric transport from the deep-sea as meteorite ejecta are all sources of diatoms which have. been described in the literature. Assemblage composition, size, age, and other features can be used to separate these different sources. Samples which yielded a wealth of stratigraphic and paleontologic information were collected at Oliver Bluffs. This material is part of the Meyer Desert Formation, which is thought to be one of the most significant deposits of the Sirius Group. Several tests will be performed to examine the occurrence of diatoms (which are known to occur) in these strata and in surface deposits across landscapes of varying age. This project will verify the presence of diatoms and will examine their distribution along several profiles from 1-meter deep excavations in a vertical outcrop. This study should help to answer questions about the source of the diatoms and the mechanisms by which they were transported