西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 79-82.

• 地质勘探 • Previous Articles     Next Articles

Sequence Features of Kangkelin Formation in Western Tarim Basin

LIU Cheng-sheng 1，2 HU Xi-feng 3 GUO Jian-hua 1,2
  

  1. 1. School of Geosciences and Info-physics, Central South University Changsha, Hunan 410083, China;
    2. MOE Key Laboratory of Nonferrous Metallogentic Prognosis, Central South University, Changsha, Hunan 410083, China;
    3. Exploration Department of Changing Oilfield Company, PetroChina, Xi’an, Shanxi 710021, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

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Abstract: Based on outcrop, geochemistry and paleontology data, it’s concluded that Kangkelin bottom is an eroding unconformity boundary, which corresponds to type Ⅰ sequence boundary of third order sequence. Three system tracts can be identified in Kangkelin Formation: lowstand system tract（LST）, trangressive system tract（TST）and highstand system tract（HST）. LST distributes mainly in Akesu area. LST is deposited by shore in incised channels.TST is deposited by shoal facies of platform margin, organic reef and restricted platform. HST is deposited mainly by

restricted platform and clastic tidal facies. Because of exposure and erosion, HST doesn’t present well in study area.Quartz sandstone developed in LST in Akesu area and organic reef and shoal facies of platform margin developedin TST are all favorable target for petroleum exploration.

Key words:

Kangkelin Formation, sequence boundary, quartz sandstone, organic reef, exploration target

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