Stratigraphy, Paleontology, Structural Geology and Paleoglaciology of the Lake Neogene Glacigene Sirius Group of the Dominion Range-Beardmore Glacier Region

多明宁山脉-比尔德莫尔冰川地区新近纪湖冰川天狼星群的地层学、古生物学、构造地质学和古冰川学

• 批准号: 8919910
• 负责人: Peter-Noel Webb
• 金额: $ 21.51万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-01 至 1993-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8919910&HistoricalAwards=false
• 关键词: Stratigraphy; Paleontology; Structural; Geology; Paleoglaciology

This award supports continuing study of the late Pliocene- early Pleistocene terrestrial glacigene Sirius Group of the Transantarctic Mountains. The program consists of a six week field season in the Dominion Range-Beardmore Glacier region in the 1990-91 austral season, followed by laboratory data reduction. The following are among the principal targets to be addressed during the field and laboratory studies: (1) pre- Sirius paleotopography and structural geology; (2) section measurement, lateral and vertical facies changes; (3) collection of interglacial beech forest (Nothofagus) and other macro-and microplant material; (4) search for fossil insect, crustacean, bivalve, and fish material in the finer-grained lacustrine facies; (5) collect additional matrix and microclast samples from the Sirius Group with the aim of expanding the collection of Cretaceous-Paleogene-Neogene microfossils which were transported from the interior basins of East Antarctica during the late Plicoene-early Pleistocene; and (6) continue to test the hypothesis that Pliocene glaciation in this part of Antarctica involved high frequency variations of relatively small ice sheets, the development of interglacials of protracted warm periods, and major marine invasions of the antarctic interior by transgressions associated with higher stands of sea level.

该奖项支持对横贯南极山脉上新世晚期-更新世早期陆地冰川期天狼星群的继续研究。 该计划包括 1990-91 年南方季节在多米尼恩山脉-比尔德莫尔冰川地区进行为期六周的野外季节，然后进行实验室数据缩减。 以下是现场和实验室研究中要解决的主要目标：（1）前天狼星古地貌和构造地质学； (2)剖面测量、横向、纵向相变化； (3) 收集间冰期山毛榉林（Nothofagus）和其他宏观和微观植物材料； （4）在细粒湖相中寻找昆虫、甲壳类、双壳类、鱼类化石； （5）从天狼星群收集更多的基质和微碎屑样本，目的是扩大上新世晚期-早更新世期间从东南极洲内陆盆地运来的白垩纪-古近纪-新近纪微化石的收集； (6) 继续检验这一假设，即南极洲这一地区的上新世冰川作用涉及相对较小的冰盖的高频变化、长期温暖期的间冰期的发展，以及与较高海平面相关的海侵对南极内陆的主要海洋入侵。