松辽盆地北部晚白垩世古土壤的综合识别及地层对比意义

项目名称： 松辽盆地北部晚白垩世古土壤的综合识别及地层对比意义

项目编号： No.41202072

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 高有峰

作者单位： 吉林大学

项目金额： 25万元

中文摘要： 针对河流相地层对比困难的问题，拟开展以古土壤为突破口的地层对比理论和方法研究。依托松科1井（全球第一口对晚白垩世陆相地层全取心的科学探井，岩心收获率96.46%）全井段岩心中已识别出的古土壤层开展测井响应特征研究，实现利用测井资料进行盆地内深埋藏古土壤层的识别。同时结合薄片、扫描电镜和地球化学分析，验证测井识别结果，建立古土壤综合识别标准，弄清松辽盆地北部晚白垩世古土壤纵向发育序列。以松科1井为标准井，结合10口优选井古土壤识别结果，开展不同环境、不同尺度（盆地范围和二级构造单元内）地层分析对比的理论和方法研究。项目首次在松辽盆地开展利用古土壤层划分对比上白垩统地层的研究工作，研究成果对于陆相盆地中古土壤层识别和地层对比具有重要意义，可以为油田河流相储层小层对比提供新的科学依据，最终期望促成松辽盆地层序地层和旋回地层研究精度的显著提高。

中文关键词： 松辽盆地；白垩纪；古土壤；地层界面；地层对比

英文摘要： The stratigraphic theories and methods will be used to study the paleosol in this proposal, it would be leds to a breakthrogh to slove the problem of fluvial stratigraphic correlation. The paleosols identified in SK-1 well segment cores will be taken as the study materals for the research of logging response characteristics, to identified the deeply buried paleosols in the basin. The paleosols will be also identified by thin section, scanning electron microscopy and geochemical analysis, aims to find out the longitudinal development sequence of the Late Cretaceous paleosols in the northern part of Songliao Basin. The theories and methods of stratigraphic analysis with different environments and scales (basin range and the secondary tectonic unit) will be studied, based on SK-1 and another 10 selected wells. This will be the first study of Upper Cretaceous stratigraphic correlation using paleosols in Songliao Basin. The proposed research is particularly meaningful for the studies of the paleosols identification and stratigraphic correlation in continental basins. It will provides the scientific basis for the fluvial reservoir stratigraphic correlation in oil fields, and significantly improves the study of the sequence stratigraphy and cyclostratigraphy in Songliao Basin.

英文关键词： Songliao Basin；Cretaceous；paleosol；stratigraphic boundary；stratigraphic correlation