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本文综述了岩溶不整合的内涵和研究意义,系统总结了古岩溶不整合的鉴别依据,把组成岩溶体系的改造形态(体)和建造作为主要标志:认为岩溶改造形态(体)有古个体形态标志和组合形态(体)──地形地貌标志,这些形态(体)应有岩溶建造充填或覆盖才有鉴定意义;还认为岩溶建造是确定岩溶不整合的主要依据,与建造同时形成的生物化石及同位素年龄是直接的关键证据:岩溶建造底部建造层中的溶积钙砾岩和溶积钙屑灰岩,两岩石系列中的岩石成因类型、结构构造、层面构造是确定古岩溶不整合面产状、古岩溶水流向的决定性标志;此外,古构造对岩溶和岩溶建造都有一定控制作用,有建造充填、覆盖,也是确定岩溶不整合的标志。
This paper summarizes the connotation and research significance of karst unconformity, systematically summarizes the identification basis of paleokarst unconformity, and takes the reconstruction form (body) and construction of the karst system as the main symbols. It is considered that the karst transformation form has the ancient individual form Signs and combinations of morphological (body) ─ ─ topography signs, these forms (body) should have karst construction filling or covering only identified significance; also considered karst construction is to determine the main basis for karst unconformity, and the formation of biological fossils And isotopic ages are the key direct evidences: dissolved calcareous conglomerates and dissolved calcium-bearing limestone in the bottom build-up of karstification, rock genetic types, structural tectonics, and bedding structures in the two series of rocks to determine unconformities of paleokarst Occurrence and paleokarst water flow. In addition, the paleotectonics have some control over the karstification and karst construction, with the construction of filling and covering, which is also a sign of determining karst unconformity.