Volcanism and Tectonics of Jalisco Block

哈利斯科区块的地质性质与邻近的墨西哥西部地区形成鲜明对比，如地质演为、火山作用、变质作用等级、断裂和起伏；这是一个令人兴奋但基本上不为人知的领域。我们建议：(1)记录哈利斯科地块的地质和构造方面，将其与周围环境区分开来，并将其定义为一个构造独立的地块。我们还将确定高原玄武岩的大规模喷发是否具有沿地块北缘伸展的特征，以及这些体积庞大的玄武岩的来源是在美流圈还是岩石圈；(2)利用火山盖层地层学和出露岩体及其变质包裹体的矿物组合，确定哈利斯科地块的隆升/挖掘历史；(3)通过检查频繁出现在哈利斯科地块边界裂谷带的可测断层，确定哈利斯科地块与北美板块之间（过去10Ma）的相对运动方向。

9315844 Carmichael The Jalisco Block has geological properties that are in stark contrast to the neighboring regions of western Mexico, such as the geological succession, volcanism, grade of metamorphism, faulting and relief; it is an exciting but largely unknown area. We propose to: (1) document geologic and tectonic aspects of the Jalisco Block that distinguish it from its surroundings and define it as a tectonically- independent block. We will also determine whether extensive eruptions of plateau basalt characterize extension along the Block's northern margin and whether the sources of these voluminous basalts are in the aesthenosphere or the lithosphere; (2) determine the uplift/exhumation history of the Jalisco Block using the stratigraphy of the volcanic cover and mineral assemblages of exposed plutons and their metamorphic envelopes; (3) determine the direction of relative motion between the Jalisco Block and the North American plate (for the last 10Ma), by examining datable faults that frequent the bounding rift zones of the Block.