松辽盆地北部石炭系—二叠系钻遇大套上二叠统林西组厚层暗色泥板岩.采用烃源岩地球化学及饱和烃气相色谱—质谱等方法,分析研究区烃源岩特征,研究有机质地球化学特征、母质类型和沉积环境的地质意义.结果表明:研究区烃源岩有机质丰度较高,多为中等—好烃源岩,有机质类型主要为Ⅱ型,Ro 平均为 2.58%,大部分小于3.00%,成熟度处于高—过成熟的演化阶段.烃源岩Pr/Ph主要介于 0.16～1.81,平均为 0.49,植烷优势较明显,指示强还原到还原的沉积环境,有利于有机质保存.Pr/nC17、Ph/nC18及C27-C28-C29规则甾烷反映沉积有机质为高等植物与藻类等低等水生生物混合来源,以浮游植物贡献为主.松辽盆地北部上二叠统林西组烃源岩进入生气阶段,具有较好的页岩气勘探前景.该结果为松辽盆地深部油气勘探提供参考.

青城子矿集区位于华北板块北缘,辽东裂谷带中段,矿集区内产有众多大型、中型铅锌矿床、金矿床、银矿床.为深入了解矿集区内铅锌矿床、金矿床、银矿床空间分布的差异性及成矿热液的运移方向,在收集整理前人研究成果的基础上,总结了矿床的时空分布规律.结果表明:铅锌矿床的成矿年龄集中于 225～221 Ma,金矿床和银矿床的成矿年龄集中于238～197 Ma;空间上,以印支期双顶沟岩体为中心依次向外产出铅锌矿床、银矿床、金矿床;成矿流体的运移方向以甸南—榛子沟一带为中心,分别向东西两侧及沿断裂迁移.结合矿集区的成矿规律与野外地质调查,初步建立了青城子矿集区找矿预测地质模型.研究可为推动在青城子矿集区内开展进一步找矿工作提供新思路.

Objectives: Liaoning is famous in China and even in the world for containing rich paleontological and geological heritage resources,which are valuable for the scientific research,popular science and socioeconomic development. To analyze the characteristics and development model of paleontological relics can provide basic materials for the in-depth study of paleontological fossils in Liaoning, and can also provide ideas for the development of the paleontological fossil industry in Liaoning.Methods: According to the recent survey results of paleontological fossil resources in Liaoning,the types,temporal and spatial distribution of paleontological relics in Liaoning are summarized and studied,and the current status of protection and utilization of paleontological heritage in Liaoning is analyzed,and its comprehensive utilization and development model is discussed.Results: The diversified development model of fossil protection and utilization is analyzed,the greatest advantages of fossils are excavated,and the research and travel development of fossil resources are recommended,the cultural and creative products based on fossils are proposed.Conclusions: Liaoning should consider a variety of paleontological fossil protection and application methods,maximize the advantages of fossils,expand geoscience research travel routes through multi-department joint development,attract enterprises to invest in the creation,research and development of paleontological cultural and creative products,and establish Fossil Culture Center.

In order to explore the oil and gas resource prospects in the Carboniferous–Permian strata in northern Songliao Basin, geological survey boreholes (HFD 1 and HFD 2) were drilled in the area, and thick dark mudstone and slate of the Upper Permian Linxi Formation were encountered. Source rock geochemistry analysis of the samples show that the organic matter abundance of the Upper Permian Linxi Formation source rock in the north of Songliao Basin is high, which belongs to medium to good source rock. The organic matter belongs to type Ⅱ, and it is in the evolution stage of highly mature to over mature. The Pr/Ph ratios of the source rocks range from 0.16 to 0.93, with an average of 0.53. The phytane predominance is obvious, and indicates a strong reduction to reduction sedimentary environment, which is conducive to the preservation of organic matter. Pr/nC17, Ph/nC18 and C27–C28–C29 regular steranes indicate that the organic matter was derived from a mixture of vascular plants and aquatic organisms such as algae, and is mainly contributed by phytoplankton. Through comprehensive analysis, it is considered that the source rocks of the Upper Permian Linxi Formation in northern Songliao Basin have entered the gas generation stage and have shale gas exploration prospects.

With the research results of other scholars, it is believed that the Lishugou Formation was deposited between 99.04 Ma and 108.4 Ma based on the youngest detrital zircon age in the Lishugou Formation fossil bed in Huanren, eastern Liaoning, which is also supported by the fossil evidence like Huashia, Yanjiestheria etc. It is concluded that the Lishugou Formation was formed in the Albian, Early Cretaceous. As the fossils in the Lishugou Formation and their equivalent layers play an important role in the evolution, migration and extinction of the Jehol biota, they should not be excluded from the Jehol biota. We propose that the Jehol biota should be 'terrestrial biota from the Early Cretaceous Barremian to Albian geographically distributed in northern China, the Korean Peninsula, Japan, Mongolia, Kazakhstan, and Siberia, etc.', and Lishugou Formation and its equivalent layers should be added as the fourth stage, which is the extinction stage of the Jehol biota based on the hypothesis of the three-stage.

Objectives and Methods:Through the re-investigation and understanding of the "mud crack-like sedimentary structure" in the Qiaotou Formation from late Mesoproterozoic to early Neoproterozoic in the eastern Liaoning,and by comparing with the contemporaneous microbial induced sedimentary structure（MISS） in other areas of the NCC,For the first time,the fractured sedimentary structure discovered in the Qiaotou Formation in Liaoning was identified as MISS.Results:The fissure structure found in the Qiaotou Formation is MISS,which is formed by the physical destruction of microbial mats.Conclusions:The MISS identified in the Qiaotou Formation has spindle-like,three-connected ornithoid and partially connected branched morphology,so it is speculated that the Qiaotou Formation was formed in the sedimentary environment of the upper part of the supratidal zone.This discovery provides basis for stratigraphic and sedimentological studies of the Qiaotou Formation,and is of great significance for studying the evolution of early life on earth and exploring the long-term impact of biota on the atmosphere and hydrosphere.

Hekanzi Mo deposit is located in Xifengkou-Lingyuan metallogenic belt in Liaoning Province.According to the ore-controlling factors of Mo deposit formation,and geological mineralization characteristics,deposit genesis,the paper has analyzed for the main geological factors and geological function of deposit formation in the Mo polymetallic mining area.It has also predicted for the mineralization perspective in the mining area.It is proposed that HeKanzi Mo deposit is a porphyry type deposit with the mineralization perspective of large-medium-scale deposit.