Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China

The lower Triassic Feixianguan Formation of the Sichuan Basin is an important exploration target for marine natural gas in China. It is widely believed that a certain interval from Fei 1 to Fei 4 displays conformable contacts rather than long-term wide-ranging hiatus. However, 2 denudational interfaces on the top of Member Fei 1 and Fei 2 respectively were found in the present work, which relies on the delicate core observation of 4 cored wells in Puguang Gas Field, microscopic observations of microsamples in terms of thin sections, scanning electron microscopy and cathodoluminescence, and geochemical testing. Evidence indicates that on the top of the first and second Member of Feixianguan Formation there existed karst unconformities, which is in distinguished contrast to previous interpretations of conformable contacts. According to those geological and geochemical investigations, a new classification is proposed for the interior Feixianguan Formation. The tectonic episode division of Indosinian movement consequently may be modified from the previous conception of a first-order episode to 3 sub-first-order episodes that correspond to the impact of 2 uplifting processes during the early Indosinian orogeny. These uplifting processes are the cause in interpreting the pervasive exposure and unconformable interfaces in Fei 1 and Fei 2 karstifications. Thus, we suggest another appropriate division of 3 third-order sequences that may suit the Feixianguan Formation, which correspond to Fei 1, Fei 2, and Fei 3-Fei 4. Regional reservoir formation was also largely affected by penecontemporaneous karstification. Massive dissolution pores fill with seepage sediments but generally remain effective reservoir spaces.

Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China

The lower Triassic Feixianguan Formation of the Sichuan Basin is an important exploration target for marine natural gas in China. It is widely believed that a certain interval from Fei 1 to Fei 4 displays conformable contacts rather than long-term wide-ranging hiatus. However, 2 denudational interfaces on the top of Member Fei 1 and Fei 2 respectively were found in the present work, which relies on the delicate core observation of 4 cored wells in Puguang Gas Field, microscopic observations of microsamples in terms of thin sections, scanning electron microscopy and cathodoluminescence, and geochemical testing. Evidence indicates that on the top of the first and second Member of Feixianguan Formation there existed karst unconformities, which is in distinguished contrast to previous interpretations of conformable contacts. According to those geological and geochemical investigations, a new classification is proposed for the interior Feixianguan Formation. The tectonic episode division of Indosinian movement consequently may be modified from the previous conception of a first-order episode to 3 sub-first-order episodes that correspond to the impact of 2 uplifting processes during the early Indosinian orogeny. These uplifting processes are the cause in interpreting the pervasive exposure and unconformable interfaces in Fei 1 and Fei 2 karstifications. Thus, we suggest another appropriate division of 3 third-order sequences that may suit the Feixianguan Formation, which correspond to Fei 1, Fei 2, and Fei 3-Fei 4. Regional reservoir formation was also largely affected by penecontemporaneous karstification. Massive dissolution pores fill with seepage sediments but generally remain effective reservoir spaces.

Kaynakça

Alsharhan AS (1987). Geology and reservoir characteristics of carbonate buildup in Giant Bu Hasa oil field, Abu Dhabi, United Arab Emirates. AAPG Bull 71: 1304–1318.

Alsharhan AS, Scott RW (2000). Hydrocarbon potential of Mesozoic carbonate platform–Basin systems, U.A.E. SEPM Spec Publ 69: 335–358.

Anderson TF, Arthur MA (1983). Stable isotopes of oxygen and carbon and their application to sedimentologic and paleoenvironmental problems. In: Arthur MA, editor. Stable Isotopes in Sedimentary Geology. Tulsa, OK, USA: SEPM Short Course Notes, pp. 1–151.

Azmy K, Veizer J, Misi A, de Oliveira TF, Sanches AL, Dardenne MA (2001). Dolomitization and isotope stratigraphy of the Vazante Formation, São Francisco Basin, Brazil. Precambrian Res 112: 303–329.

Chen HD, Zhong YJ, Hou MC, Lin LB, Dong GY, Liu JH (2009). Sequence styles and hydrocarbon accumulation effects of carbonate rock platform in the Changxing-Feixianguan Formations in the Northeastern Sichuan Basin. Oil Gas Geol 30:

Chen JS, Li Z, Wang ZY, Li L, Ma Q (2007). Paleokarstification and reservoir distribution of Ordovician carbonates in Tarim Basin. Acta Sediment Sin 25: 858–868 (in Chinese with an abstract in English).

Chen ZQ (1995). The late Permian global flooding events. Sediment Facies Palaeogeogr 15: 34–39 (in Chinese with an abstract in English).

Deng YG, Wu RT, Xin JR (1980). The Indosinian movement in lower Yangtze region. Geol Rev 26: 430–435 (in Chinese with an abstract in English).

Fan JS (2005). Characteristics of carbonate reservoirs for oil and gas fields in the world and essential controlling factors for their formation. Earth Sci Front 12: 23–30 (in Chinese with an abstract in English).

Flügel E (2010). Microfacies of Carbonate Rocks: Analysis, Interpretation and Application. 2nd ed. Berlin, Germany: Springer-Verlag.

Gale JFW, Gomez LA (2007). Late opening-mode fractures in karst- brecciated dolostones of the lower Ordovician Ellenburger Group, West Texas: recognition, characterization, and implications for fluid flow. AAPG Bull 91: 1005–1023.

Glumac B, Spivak-Birndorf ML (2002). Stable isotopes of carbon as an invaluable stratigraphic tool: an example from the Cambrian of the Northern Appalachians, USA. Geology 30: 563–566.

Guo CG, Li R, Yang YY, Xie FC, Dong WY (2011). Sequence stratigraphy and evolutionary models for the Changxing Formation in the Tongjiang-Nanjiang-Bazhong zone, Sichuan. Sediment Geol Tethyan Geol 31: 28–32 (in Chinese with an abstract in English).

Guo TL (2011). Sequence strata of the platform edge in the Changxing and Feixianguan formations in the Yuanba area, Northeastern Sichuan Basin and their control on reservoirs. Acta Petrol Sin 32: 387–394 (in Chinese with an abstract in English).

Guo XS, Guo TL, editors (2012). The Exploration Theory and Practice of Carbonate Platform Margin, Puguang and Yuanba Gas Field. Beijing, China: Science Press (in Chinese).

Halley RB, Evans CC (1983). The Miami Limestone: A Guide to Selected Outcrops and Their Interpretation. Miami, FL, USA: Miami Geological Society.

Hardie LA (1987). Dolomitization: a critical view of some current views. J Sediment Res 57: 166–183.

Harrison RS (1975). Porosity in Pleistocene grainstones from Barbados: some preliminary observations. Bull Can Petrol Geol 23: 383–392.

Hird K, Tucker M E (1988). Contrasting diagenesis of two carboniferous oolites from South Wales: a tale of climatic influence. Sediment 35: 587–602.

Huang SJ (1990). Cathodoluminescence and diagenetic alteration of marine carbonate minerals. Sediment Facies Palaeogeogr 4: 9–15 (in Chinese with an abstract in English).

Huang SJ (1997). A study on carbon and strontium isotopes of late Paleozoic carbonate rocks in the Upper Yangtze platform. Acta Geol Sin 71: 45–53 (in Chinese with an abstract in English).

Huang SJ, Huang Y, Lan YF, Huang KK (2011). A comparative study on strontium isotope composition of dolomites and their coeval seawater in the late Permian-early Triassic, NE Sichuan Basin. Acta Petrol Sin 27: 3831–3842 (in Chinese with an abstract in English).

Kaufman AJ, Knoll AH (1995). Neoproterozoic variations in the C-isotopic composition of seawater: stratigraphic and biogeochemical implications. Precambrian Res 73: 27–49.

Kerans C (1988). Karst-controlled reservoir heterogeneity in Ellenburger Group carbonates of West Texas. AAPG Bull 72: 1160–1183.

Li RX, Wei JY, Yang WD, Guo QJ (2000). Variations of ratio of 87Sr/86Sr in seawater with time: implications for sea level changes and global correlation. Adv Earth Sci 15: 729–733 (in Chinese with an abstract in English).

Luo B, Tan XC, Li L, Liu H, Xia JW, Du BQ, Liu XG, Mou XH (2010). Discovery and geologic significance of paleokarst unconformity between Changxing Formation and Feixianguan Formation in Shunan area of Sichuan Basin. Acta Petrol Sin 31:

Lucia FJ, editor (1999). Carbonate Reservoir Characterization. New York, NY, USA: Springer-Verlag.

Lucia FJ, Kerans C (2003). Carbonate reservoir characterization. J Petrol Tech 55: 70–72.

Ma YS (2008). Geochemical characteristics and origin of nature

Kaynak Göster

Bibtex @ { tbtkearth143893, journal = {Turkish Journal of Earth Sciences}, issn = {1300-0985}, eissn = {1303-619X}, address = {}, publisher = {TÜBİTAK}, year = {2015}, volume = {24}, pages = {39 - 55}, doi = {10.3906/yer-1410-7}, title = {Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China}, key = {cite}, author = {Yu, Yang and Tan, Xiucheng and Chen, Peiyuan and Yang, Huiting and Ma, Teng and Cao, Jian and Jın, Xiuju} }
APA Yu, Y , Tan, X , Chen, P , Yang, H , Ma, T , Cao, J , Jın, X . (2015). Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China . Turkish Journal of Earth Sciences , 24 (1) , 39-55 . DOI: 10.3906/yer-1410-7
MLA Yu, Y , Tan, X , Chen, P , Yang, H , Ma, T , Cao, J , Jın, X . "Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China" . Turkish Journal of Earth Sciences 24 (2015 ): 39-55 <https://dergipark.org.tr/tr/pub/tbtkearth/issue/12038/143893>
Chicago Yu, Y , Tan, X , Chen, P , Yang, H , Ma, T , Cao, J , Jın, X . "Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China". Turkish Journal of Earth Sciences 24 (2015 ): 39-55
RIS TY - JOUR T1 - Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China AU - Yang Yu , Xiucheng Tan , Peiyuan Chen , Huiting Yang , Teng Ma , Jian Cao , Xiuju Jın Y1 - 2015 PY - 2015 N1 - doi: 10.3906/yer-1410-7 DO - 10.3906/yer-1410-7 T2 - Turkish Journal of Earth Sciences JF - Journal JO - JOR SP - 39 EP - 55 VL - 24 IS - 1 SN - 1300-0985-1303-619X M3 - doi: 10.3906/yer-1410-7 UR - https://doi.org/10.3906/yer-1410-7 Y2 - 2021 ER -
EndNote %0 Turkish Journal of Earth Sciences Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China %A Yang Yu , Xiucheng Tan , Peiyuan Chen , Huiting Yang , Teng Ma , Jian Cao , Xiuju Jın %T Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China %D 2015 %J Turkish Journal of Earth Sciences %P 1300-0985-1303-619X %V 24 %N 1 %R doi: 10.3906/yer-1410-7 %U 10.3906/yer-1410-7
ISNAD Yu, Yang , Tan, Xiucheng , Chen, Peiyuan , Yang, Huiting , Ma, Teng , Cao, Jian , Jın, Xiuju . "Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China". Turkish Journal of Earth Sciences 24 / 1 (Mart 2015): 39-55 . https://doi.org/10.3906/yer-1410-7
AMA Yu Y , Tan X , Chen P , Yang H , Ma T , Cao J , Jın X . Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China. Turkish Journal of Earth Sciences. 2015; 24(1): 39-55.
Vancouver Yu Y , Tan X , Chen P , Yang H , Ma T , Cao J , Jın X . Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China. Turkish Journal of Earth Sciences. 2015; 24(1): 39-55.
IEEE Y. Yu , X. Tan , P. Chen , H. Yang , T. Ma , J. Cao ve X. Jın , "Discovery of hiatus in Feixianguan Formation and its geological implications, Sichuan Basin, SW China", Turkish Journal of Earth Sciences, c. 24, sayı. 1, ss. 39-55, Mar. 2015, doi:10.3906/yer-1410-7