SEDIMENTARY CHARACTERISTICS OF THE JIUFOTANG FORMATION DEVELOPED IN LUANPING MESOZOIC FAULT BASIN OF NORTHERN HEBEI PROVINCE

PAN Li-cheng; LI Lin-qing; LI Xiang; WU Geng-lin; ZHAO Hai-xuan

Volume 16 Issue 1

Mar. 2010

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Article Navigation > Journal of Geomechanics > 2010 > 16(1): 85-95

PAN Li-cheng, LI Lin-qing, LI Xiang, et al., 2010. SEDIMENTARY CHARACTERISTICS OF THE JIUFOTANG FORMATION DEVELOPED IN LUANPING MESOZOIC FAULT BASIN OF NORTHERN HEBEI PROVINCE. Journal of Geomechanics, 16 (1): 85-95.

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SEDIMENTARY CHARACTERISTICS OF THE JIUFOTANG FORMATION DEVELOPED IN LUANPING MESOZOIC FAULT BASIN OF NORTHERN HEBEI PROVINCE

Regional Geology and Mineral Resources Survey Institute of Hebei Province, Langfang 065000, China

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Received: 2009-03-24
Published: 2010-03-01

Abstract

Abstract

In the Luanping area of northern Hebei Province, there appears a Mesozoic continental fault basin. Its uppermost part is occupied by the Early Cretaceous Jiufotang Formation, which consists of tremendously thick grayish green-grayish yellow clastic rocks formed under inland warmhumid climate. In general, this formation is divisible into two members. Member one begins at the base with alluvial fan deposits, as products of initial stage of the fault, and is poorly preserved because of erosion. The rest of the member is composed of fan-delta deposits, intercalated with lake deposits. Member two occurs as alluvial deposits. Under the control of Gangzi-Hongqizhen synsedimentary fault in the northwest, an outflowing-type fault lake was formed during the Jiufotang age. Two stages can be recognized in the development of the faults. The first one, spanning a short time interval, finds its expression in the transition from alluvial system to fan-delta system, leading to forms of small-area lakes and small-thickness deposits. The second stage, however, lasting as long as to the disappearance of the basin, is reflected by the transition from fan-delta system to alluvial system, bringing about the appearance of open lakes and grent thickness of deposits.
- Luanping basin,
- Early Cretaceous Jiufotang Formation,
- sedimentary features,
- depositional system,
- synsedimentary fault basin evolution

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References(14)

References

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