New Demonstration of the Seismic Origin for Jishan Sandbody of Paleogene in Huimin Depression, Shandong Province
- Received Date: 2005-10-20
- Rev Recd Date: 2006-01-13
- Publish Date: 2006-08-10
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Key words:
- seismite /
- magmatic activity /
- seismodisconformity /
- Jishan sandbody /
- Huimin Depression
Abstract: The Jishan sandbody of central uplift belt of Paleogene in Huimin depression has been studied in terms of core observation and image logging datum analysis. The results show that the sedimentary dynamic mechanism for Jishan sandbody is seism, rather than flood deposition. Jishan sandbody is mainly composed of seismites(seismically disturbed), similar tsunamites and seismoturbidite rocks. A corresponding seismic sedimentary sequence and model have been established. The seismically disturbed series is crucial for analyzing the origin of Jishan sandbody, and the seismoturbidite rocks are the main body of the series. Both layers are contact with seismic unconformity plane of varied scale. During early Sha-3 period, the seismic events are resulted directly from magmatic intrusions and the upward of deep magma in origin. Magmatic intrusions and seismic events happen simultaneously at the same time and space.
| Citation: | New Demonstration of the Seismic Origin for Jishan Sandbody of Paleogene in Huimin Depression, Shandong Province[J]. Acta Sedimentologica Sinica, 2006, 24(4): 488-495.
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