Collaborative Research: Accrete: An Integrated Study of Continental Growth at a Convergent to Transpressive Plate Margin

合作研究：累积：板块边缘收敛处大陆生长的综合研究

• 批准号: 9526599
• 负责人: Nikolas Christensen
• 金额: $ 4万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-01 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9526599&HistoricalAwards=false
• 关键词: Collaborative; Research; Accrete; Integrated; Study

9526599 Christensen The ACCRETE program is a collaborative endeavor to determine how continents grow by magmatic and terrane accretion, and to investigate the relative roles of these processes. This award is part of a project which involves a three year coordinated geophysical and geological study of mid-Mesozoic to mid-Cenozoic continental growth by accretion. The goal is to develop a four dimensional (X,Y,Z,and time) understanding of accretionary processes along the portion of the northwestern margin of North America underlain by the Coast Mountains orogen, British Columbia and southeastern Alaska. Specifically, the project involves a transect of the orogen close to the British Columbia-Alaska border. A geophysical pilot project along this transect in the summer of 1994 resulted in over 1700 km of new marine MCS (Multi-Channel Seismic), gravity and magnetic data, and common receiver gathers from 60 REFTEK seismometers. Building on the high quality of this geophysical data base, the Principal Investigators propose a group of studies designed to construct a 400 km cross section of the orogen through the entire crust and into the upper mantle. To accomplish this, they must resolve fundamental questions regarding how continental crust is formed during terrane accretion. ***

小行星9526599 ACCRETE计划是一项合作奋进，以确定大陆如何通过岩浆和岩浆增生生长，并调查这些过程的相对作用。 该奖项是一个项目的一部分，该项目涉及一个为期三年的协调地球物理和地质研究的中生代中期到新生代中期大陆增长的增生。 其目标是发展一个四维（X，Y，Z和时间）的增生过程沿着部分北美西北边缘的海岸山脉造山带，不列颠哥伦比亚省和阿拉斯加东南部的理解。 具体而言，该项目涉及靠近不列颠哥伦比亚-阿拉斯加边界的造山带横断面。 1994年夏天，沿这条断面开展的一个地球物理试验项目沿着产生了超过1700公里的新的海洋多道地震数据、重力和磁力数据，以及来自60个REFTEK地震仪的共同接收器数据集。 在这个高质量的地球物理数据库的基础上，主要研究人员提出了一组研究，旨在构建一个400公里的造山带横截面，通过整个地壳和上地幔。 要做到这一点，他们必须解决有关大陆地壳如何在地壳增生过程中形成的基本问题。 ***