SEQUENCE FRAMEWORK AND CHARACTERISTICS OF SYSTEMS TRACT OF THE UPPER JURASSIC IN THE MIDDLE—NORTHERN LUXI DEPRESSION OF INNER MONGOLIA
Zhu Xiaomin Li Binyang Ma Lichi Zhang Juxing Sun Yueping
1University of Petroleum,Beijing 100220
2Institute of Geoscience in Shengli Oilfield,Dongying Shandong
3Institute of Exploration and Development of Liaohe Oilfield,Panjing ,Liaoning
The Upper Jurassic of Luxi depression in Kailu Basin was deposited in humid climate, and could be divided into five sequences with 3—5 Ma cycle according to the comprehensive researches of geological and geophysical data. The boundaries among these different sequences are unconformity and its corresponding conformity. Tectonic activity, climate and material supply controlled the framework and style of a sequence. The basin palaeogeography and fault activity influenced on distributions of Upper Jurrasic. The sequence in studying area was made up of lowstand, transgressive and highstand systems tracts due to topographic (faulted) break. Characteristics of lowstand, transgressive and highstand systems tracts of sequence B are described particularly. It is pointed out that the favorable lithological traps are located mainly on nearshore subaqueous fans of fall block of Xishaogen fault, and on turbidite fan under topographic break in sequence C.
. SEQUENCE FRAMEWORK AND CHARACTERISTICS OF SYSTEMS TRACT OF THE UPPER JURASSIC IN THE MIDDLE—NORTHERN LUXI DEPRESSION OF INNER MONGOLIA[J]. JOPC, 2002, 4(3): 33-39.
