The Types of Thermal Spring and its Geological Distributive Characteristics in Yanshan Orogenic Belt, China

Abstract

<jats:p>Yanshan orogenic belt and its nearby area have thinner earth crust structure, so the asthenosphere of earth mantle upwells and directly bake earthcrust, resulting in Yanshan geothermal anomaly. The type and distribution of thermal spring are controlled by an EW major fault. Thermal springs can be divided into the outcropping type and the hidden type. The outcropping thermal springs mainly spread over orogenic belt in mountain area distributed over northern of Shangyi- Chicheng-Gubeikou-Chengde-Pingyuan fault belt, Hebei. Average temperature of outcropping thermal springs higher than 60°C. Yanshan’s particular earth dynamics and tectonic structure background makes the thermal springs in this area have great prospects for exploitation and utilization</jats:p>