Antarctic Tectonics Evolution: CD-ROM

南极构造演化：CD-ROM

• 批准号: 9615161
• 负责人: Lawrence Lawver
• 金额: $ 13.92万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-01 至 2000-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9615161&HistoricalAwards=false
• 关键词: Antarctic; Tectonics; Evolution; CD; ROM

OPP 9615161 Lawver and Dalziel Abstract Antarctica is the Earth's most isolated continent. It is surrounded by actively spreading ridges except in the South American sector. Antarctica is the only glaciated continent on the planet, and as such constitutes a unique element in the Earth's environment. The tectonic evolution of its plate boundaries, and of features within the Antarctic plate, controlled development of the seaways around and through the continent prior to and during the onset of glaciation. In addition to its unique role in the present day planetary environment and its classic one as the Okeystone of GondwanalandO during Paleozoic and early Mesozoic times, Antarctica has played an important role in global dynamics over the past 1.0 billion years, and indeed throughout Earth history. Because Antarctica is ice covered, few continent-wide compilation maps have been attempted. This award supports a project to produce a set of digital geologic reference maps of the Antarctic. A new tectonic map of the Antarctic plate will incorporate: geological data, both from previously-published maps, from new papers and from unpublished sources; and terrestrial and marine tectonic data, including seafloor structure derived from Geosat satellite gravity data, and seafloor age and spreading history information. Moreover, it will be based on the sub-ice topography. In addition to a tectonic map, a series of reconstructions centered on Antarctica, starting with the early Neoproterozoic and continuing through to the Cenozoic will be produced. These maps will be presented in digital form on a CD-ROM, so that they can be easily reproduced and used by others. The digital information will be compiled in a format that will allow future data sets to be easily added to the database and to allow old data to be easily updated, modified or discarded. Besides the maps mentioned above, the CD-ROM will include digitized versions of updated ice-thickness and sub-ice top ography maps, and an archive of available data as other investigators wish to contribute. Other data, such as aerogeophysical and paleomagnetic data, would be covered with separate chapters in the accompanying text and separate files on the CD-ROM. About 1000 copies of the CD and accompanying text will be available for the cost of postage and handling. Further copies can be distributed for the cost of reproduction, postage and handling.

9615161 Lawver and Daldalle 摘要南极洲是地球上最与世隔绝的大陆。 除南美洲部分外，它周围都是活跃的扩张脊。 南极洲是地球上唯一的冰川大陆，因此是地球环境中的一个独特元素。 其板块边界的构造演化，以及南极板块内部的特征，控制了在冰川作用开始之前和期间大陆周围和通过大陆的海道的发展。 除了在现今行星环境中的独特作用以及在古生代和中生代早期作为冈瓦纳大陆的Okeystone之外，南极洲在过去10亿年中，甚至在整个地球历史中，在全球动力学中发挥了重要作用。 由于南极洲被冰雪覆盖，很少有人尝试绘制全大陆的地图。 该奖项支持一个制作一套南极数字地质参考图的项目。 新的南极板块构造图将包括：来自以前出版的地图、新论文和未出版来源的地质数据;陆地和海洋构造数据，包括从地球观测卫星重力数据得出的海底结构，以及海底年龄和扩张历史信息。 此外，它将基于冰下地形。 除了构造图，还将制作一系列以南极洲为中心的重建图，从新元古代早期开始，一直持续到新生代。 这些地图将以光盘的数字形式提供，以便其他人可以方便地复制和使用。数字信息的汇编格式将使今后的数据集易于添加到数据库中，并使旧数据易于更新、修改或丢弃。 除了上述地图外，光盘还将包括最新的冰厚和冰下顶部图解地图的数字化版本，以及其他调查人员希望提供的现有数据档案。 其他数据，如航空地球物理和古地磁数据，将在随附文本中以单独的章节和单独的光盘文件的形式提供。大约1000份光盘和随附文本将提供邮资和处理费。 可分发更多的副本，以支付复制、邮寄和处理费用。