In Search of the Primeval Oceanic Crust

寻找原始洋壳

• 批准号: 9418194
• 负责人: Emile Pessagno
• 金额: $ 11.2万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-02-01 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9418194&HistoricalAwards=false
• 关键词: Search; Primeval; Oceanic; Crust

Pessagno 9418194 Chert and limestone samples collected from the basement complexes will be processed in the laboratory. Radiolarians liberated from the rock matrix will be identified with our scanning electron microscope. Following the productive format of previous work in other basement complexes, results are divisible into two important components. First, radiolarian faunas will allow better dating of these basement complexes. Careful field work permits selective dating and discrimination of both the igneous basement and any subsequent inclusions into this basement material. Second, the paleobiogeographical significance of radiolarian faunas will further constrain models of the paleogeographic development of the Caribbean Plate. The research fills in gaps in the knowledge of Earth history especially providing further details of the age and origin of various fragments of the Caribbean Plate.

Pessagno 9418194 从地下室综合体收集的燧石和石灰石样品将在实验室进行处理。 从岩石基质中释放出来的放射虫将用我们的扫描电子显微镜进行鉴定。 遵循其他地下室综合体先前工作的富有成效的格式，结果可分为两个重要组成部分。 首先，放射虫动物群将有助于更好地确定这些地下室复合体的年代。 仔细的现场工作可以对火成岩基底和该基底材料中的任何后续内含物进行选择性年代测定和区分。 其次，放射虫动物群的古生物地理意义将进一步制约加勒比板块古地理发展的模型。 该研究填补了地球历史知识的空白，特别是提供了加勒比板块各种碎片的年龄和起源的进一步细节。