| Geological Characteristics and Manifestations of Geological Processes of Sequence Boundaries and Their Vicinities |
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| 作者姓名： | Xiao Linping Testing Centre of Geotechnical Engineering Southwest Jiaotong Universityand Zhao YuguangChengdu Institute of Mineral Resources Chinese Academy of Geological Sciences Chengdu Sichuan Liu Xinzhu |
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| 作者单位： | Xiao Linping Testing Centre of Geotechnical Engineering，Southwest Jiaotong Universityand Zhao YuguangChengdu Institute of Mineral Resources，Chinese Academy of Geological Sciences，Chengdu，Sichuan，610082 Liu Xinzhu |
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| 摘 要： | This paper discusses the geological characteristics and architectures of sequence boundaries and their vicinities and has proposed a classification scheme for the sequence boundaries, which can thus be grouped into three types and eight categories: type I includes exposed truncated surface, palaeosol surface, palaeokarst surface and exposed surface; type Ⅱ boundaries include structural transitional surface during sea-level fall and transgressive onlap surface; and type Ⅲ includes submarine erosional diagenetic diastem and event surface. A study has been made for the three major boundaries lying between the Permian and pre-Permian, the Permian and Triassic, and the Middle and Lower Triassic respectively in terms of multiple disciplines such as lithostratigraphy, biostratigraphy, magnetostratigraphy and carbon and oxygen isotopic geology. These three boundaries are ascribed to type I , typeⅡ and typeⅢ, respectively.
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Geological Characteristics and Manifestations of Geological Processes of Sequence Boundaries and Their Vicinities |
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| Authors: | Xiao Linping Testing Centre of Geotechnical Engineering Southwest Jiaotong Universityand Zhao YuguangChengdu Institute of Mineral Resources Chinese Academy of Geological Sciences Chengdu Sichuan Liu Xinzhu |
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| Abstract: | This paper discusses the geological characteristics and architectures of sequence boundaries and their vicinities and has proposed a classification scheme for the sequence boundaries, which can thus be grouped into three types and eight categories: type I includes exposed truncated surface, palaeosol surface, palaeokarst surface and exposed surface; type II boundaries include structural transitional surface during sea–level fall and transgressive onlap surface; and type III includes submarine erosional diagenetic diastem and event surface. A study has been made for the three major boundaries lying between the Permian and pre–Permian, the Permian and Triassic, and the Middle and Lower Triassic respectively in terms of multiple disciplines such as lithostratigraphy, biostratigraphy, magnetostratigraphy and carbon and oxygen isotopic geology. These three boundaries are ascribed to type I, type II and type III, respectively. |
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| Keywords: | sequence boundaries architectural analysis biotic succession magnetopolarity superperiod carbon and oxygen isotopes |
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