At present, in the work of groundwater exploitation marlite has been regarded asaquiclude or bad permeable stratum in many internal areas in China.
目前，在地下水开发工作中，国内不少地区有泥灰岩作为隔水层或弱透水层。
2
High content clay mineral shale, oil shale and marlite are the main source rocks for large oil or gas fields in the world, which formed in deep water slopes between platform and open sea.