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2004•Journal of Jiling UniversityRequires access

Devonian sequence-stratigraphic framework and its paleogeographical background in the Dianqiangui Basin and its adjacent areas

Mei Ming-xiang, Ping Zeng, Chu Han-ming, Liu Zhi-rong, LI Dong-hai, Meng Qing-fen, YI Ding-hong

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Abstract

The Devonian System in the Dianqiangui Basin and its adjacent areas consisting of three parts. The lower part is a set of transgressive sandstones, the middle is a mixed rock series and the upper is marked by a set of carbonate rocks. For the Devonian System of the Dianqiangui Basin and its adjacent areas, 13 third-order sedimentary sequences can be discerned and they can be grouped into two second-order tectonic sequences. In different depositional periods, the facies-succession features of the third-order sequences and their regular spatial changes reflect various palaeogeographical patterns. Controlled both by the global sea-level changes and by the regional tectonic movements, a particular Devonian filling succession of the sedimentary basin was formed. The third-order sea-level changes in the study area differ greatly from those of Europe and America.

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The Devonian System in the Dianqiangui Basin and its adjacent areas consisting of three parts. The lower part is a set of transgressive sandstones, the middle is a mixed rock series and the upper is marked by a set of carbonate rocks. For the Devonian System of the Dianqiangui Basin and its adjacent areas, 13 third-order sedimentary sequences can be discerned and they can be grouped into two second-order tectonic sequences. In different depositional periods, the facies-succession features of the third-order sequences and their regular spatial changes reflect various palaeogeographical patterns. Controlled both by the global sea-level changes and by the regional tectonic movements, a particular Devonian filling succession of the sedimentary basin was formed. The third-order sea-level changes in the study area differ greatly from those of Europe and America.

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Available abstract

The Devonian System in the Dianqiangui Basin and its adjacent areas consisting of three parts. The lower part is a set of transgressive sandstones, the middle is a mixed rock series and the upper is marked by a set of carbonate rocks. For the Devonian System of the Dianqiangui Basin and its adjacent areas, 13 third-order sedimentary sequences can be discerned and they can be grouped into two second-order tectonic sequences. In different depositional periods, the facies-succession features of the third-order sequences and their regular spatial changes reflect various palaeogeographical patterns. Controlled both by the global sea-level changes and by the regional tectonic movements, a particular Devonian filling succession of the sedimentary basin was formed. The third-order sea-level changes in the study area differ greatly from those of Europe and America.

Key concepts: Devonian, Geology, Paleontology, Structural basin, Sedimentary depositional environment, Facies, Sedimentary rock, Sequence (biology)

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