GLORIA Side-Scan Sonar Survey of the Northern Colombian Convergent Margin

这是一个项目，调查部分马格德莱纳风扇上的 使用格洛丽亚长距离的北方哥伦比亚会聚边缘 侧扫声纳系统 该数据与3.5 kHz 剖面和单道地震将确定计划 查看变形模式。这种模式将允许测试 假设风扇，因为它施加了一个低表面， 在利润率的前沿上的斜坡，可能会抑制 近海地区的变形。 %%% 河口沉积的沉积扇 在沉积记录中很重要。 许多现代球迷（对于 例如，密西西比河和亚马逊河）沉积在被动 边缘;其他如Magdelena扇沉积在 收敛边缘 令人惊讶的是，Magdelena的粉丝 考虑到它被沉积在变形的 裕度 这项调查将有助于解决互动的问题 在会聚边缘的变形和扇沉积之间。 这些数据将有助于比较现代和古代风扇 沉积在汇聚边缘。

This is a project to survey part of the Magdelena fan on the northern Columbian convergent margin using the GLORIA long range side-scan sonar system. This data together with 3.5 kHz profiling and single channel seismics will establish the plan view pattern of deformation. This pattern will allow a test of the hypothesis that the fan, because it imposes a low surface slope on the leading edge of the margin, may be suppressing the deformation in the offshore region. %%% Sediment fans deposited offshore from the mouths of rivers are important in the sedimentary record. Many modern fans (for example, the Mississippi and Amazon) are deposited on passive margins; others such as the Magdelena fan are deposited on convergent margins. It is surprising that the Magdelena fan is undeformed considering it is being deposited on a deforming margin. This survey will help address the problem of interaction between deformation and fan deposition at a convergent margin. The data will be useful for comparing modern and ancient fans that are deposited on convergent margins.