CAMBRIAN DEPOSITIONAL SYSTEM IN SOUTHWEST SICHUAN

doi:10.3863/j.issn.1000-2634.2007.04.05

Abstract

Abstract:

Cambrian strata wildly spread in southwest Sichuan and are composed of marine terrigenous clastic rocks and carbonate rocks. After analyzing the data of drilling, logging and well logging, as well as facies marks, it is suggested that terrigenous clastic depositional system was developed in Early Cambrian (Qiongzhusi Stage and Canglangpu Stage) and mainly includes terrigenous clastic shore and shallow shelf facies; carbonate platform depositional system was developed in late Cambrian and is mainly composed of carbonate tidal flat, mixing tidal flat, halfrestricted to restricted platform facies. Study on depositional characteristics and facies distribution shows that the material source of study area is from Kangdian old land, at that time the water depth progressively increase from northwest to southeast, and the distribution of depositional facies is orderly oriented in the direction from northwest to southwest.

Key words: depositional system, shelf, carbonate platform, shore, Cambrian, Southwest Sichuan

CLC Number:

TE111.3

XIA Ji-wen;LI Ling LUO Bing et al.. CAMBRIAN DEPOSITIONAL SYSTEM IN SOUTHWEST SICHUAN[J]. 西南石油大学学报(自然科学版), 2007, 29(4): 21-25.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.3863/j.issn.1000-2634.2007.04.05

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2007/V29/I4/21

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CAMBRIAN DEPOSITIONAL SYSTEM IN SOUTHWEST SICHUAN

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