A GLORIA, Hydrosweep, Geophysical Investigation of the Juan Fernandez Microplate at the Pacific-Antarctic-Nazca Triple Junction (Renewal)

1991年对胡安·费尔南德斯微板进行了调查，获得了Gloria Side扫描、水扫描测深、磁力、重力和3.5 kHz的数据。首席调查员将对这些数据进行扩展分析，并将详细绘制胡安·费尔南德斯微板块的结构图，确定最适合其构造演化的一个或多个模型，并将研究导致微板块演化的力量。需要解决的问题包括：(1)胡安·费尔南德斯微板块及其边界现今详细的构造和构造性质是什么？(2)该微板块的起源和详细演化是什么？(3)沿着胡安·费尔南德斯-南极板块边界的岩石圈是如何变形的？(4)胡安·费尔南德斯微板块与其他微板块和什么样的一般模式最适用于它们的起源和构造演化。

The Juan Fernandez microplate was surveyed in 1991, obtaining GLORIA sidescan, Hydrosweep bathymetric, magnetic, gravity, and 3.5 kHz data. The principal investigator will conduct an extended analysis of these data and will map in detail the structures of the Juan Fernandez microplate, determining the best-fitting model or models for its tectonic evolution, and will study the forces that derive microplate evolution. Questions to be addressed include: (1) What is the present-day detailed structural and tectonic nature of the Juan Fernandez microplate and its boundaries? (2) What is the origin and detailed evolution of this microplate? (3) How is the lithosphere deformed along the Juan Fernandez-Antarctic plate boundary? (4) How does the Juan Fernandez microplate compare to other microplates and what general model best applies to their origin and tectonic evolution.