Heavy crude oils and hydrocarbon inclusions were discovered recently in brecciated limestones, micrite limestones and dolomitized limestones associated with lead-zinc deposits in the Jinding area.

• 金顶铅锌矿区上三叠统三合洞组角砾状灰岩为其主要容矿岩层,最近在与金顶矿床共生的灰岩角砾岩、深灰色泥晶灰岩和灰色云化灰岩中发现多层稠油储层及油气包裹体。