Thermal Anomalies and Fluid Flow in the Continental Crust

几乎所有的地质作用都与流体有关， 在大陆地壳中无处不在， 至少10到15公里。 由于热量通过流体运动平流输送， 它可能会导致独特的热异常模式 这可以被解释为了解流体路径 和机制。 过去和现在的实地研究 沃希托山脉-阿尔科马盆地地区的气温 重新提出，以深入了解机制， 流体流动发生在大陆地壳中， 流体迁移和 造山作用 阿科马盆地和沃希托山脉是 因为他们被认为是一个来源， 1949年席卷北美的热盐水 晚宾夕法尼亚-早二叠世（约300 + 25 Ma）， 导致广泛的钾质蚀变， 密西西比河谷型（MVT）铅锌矿床，以及 古地磁极可能重置 数学 模型也将用于评估各种假设 关于流体流动发生的机制， 大陆地壳 建模将包括以下研究：（1） 时间聚焦压实或变质 （2）地壳中的热量从 自由对流和强迫对流的相互作用 对流流型，以及（3） 自由对流在倾斜的地质介质中很重要， 如可能发生在沉积盆地中。 结果 数学模型将与数据结合使用 在实地研究中收集，以评估有关 大陆地壳中的流体流动，特别是 是指构造驱动的流体迁移。

Fluids are involved in nearly all geologic processes, and are ubiquitous in the continental crust to depths of at least 10 to 15 km. As heat is advected by fluid movement, it may lead to distinctive patterns of thermal anomalies which can be interpreted to gain insight into fluid pathways and mechanisms. Field studies of past and present temperatures in the Ouachita Mountains- Arkoma basin area re proposed to gain insight into the mechanisms by which fluid flow occurs in the continental crust and the nature of possible relationships between fluid migrations and orogenesis. The Arkoma basin and Ouachita mountains are of interest because they have been implicated as a source of the hot brines which apparently flooded North America in Late Pennsylvanian-Early Permian time (about 300 +25 Ma), leading to widespread potassic alteration, formation of Mississippi Valley-type (MVT) lead-zinc deposits, and possible resetting of paleomagnetic poles. Mathematical models will also be used to evaluate various hypotheses concerning the mechanisms by which fluid flow takes place in the continental crust. Modeling will include a study of (1) temporal focusing of compaction- or metamorphic-derived fluids, (2) catastrophic release of heat in the crust from free convection an the interaction of free- and forced- convective flow regimes, and (3) the conditions under which free convection is important in tilted geologic media such as may occur in sedimentary basins. Results of the mathematical modeling will be used in conjunction with data collected in field studies to evaluate hypotheses concerning fluid flow in the continental crust, particularly in reference to tectonically-driven fluid migrations.