RUI: Element Mobility Patterns, Volume Loss, and a Ballooning Diapir

RUI：元素迁移模式、体积损失和气球底辟

• 批准号: 9505569
• 负责人: Gary Girty
• 金额: $ 11.08万
• 依托单位: San Diego State University Foundation
• 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: 1995-06-01 至 1998-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9505569&HistoricalAwards=false
• 关键词: RUI; Element; Mobility; Patterns; Volume

Plutons represent addition of magma to the crust, at least at the level of intrusion, and as many plutons are quite large, space must be provided in the crust to accommodate the increased volume. The space problem has been identified for a long time, but its resolution has become increasingly important as pluton emplacement mechanisms are studied. This project will examine the idea that volume loss of the host rocks surrounding a pluton may accommodate some of the required space. The approach is a chemical mass-balance study of wall rocks around the Cretaceous aged La Posta pluton in southern California. Results should test this hypothesis for how space is provided for intruded plutons.

岩体代表岩浆向地壳的增加，至少在侵入的水平上，并且由于许多岩体相当大，因此必须在地壳中提供空间以容纳增加的体积。 空间问题已被确定了很长一段时间，但它的解决方案已成为越来越重要的岩体侵位机制的研究。 这个项目将研究这样一个想法，即围绕着一个岩体的主岩的体积损失可能会容纳一些所需的空间。 该方法是对加州南部白垩纪La波斯塔岩体周围围岩的化学质量平衡研究。 结果应该测试这一假设的空间是如何提供侵入岩体。