Albitization of Miocene Deep-Sea Sandstones from the Japan Sea Backarc Basin

Seyedolali, Abbas; Boggs, Sam

doi:10.4096/jssj1995.43.1

Jour. Sed. Soc. Japan

1996

DOI: 10.4096/jssj1995.43.1

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Albitization of Miocene Deep-Sea Sandstones from the Japan Sea Backarc Basin

Abbas Seyedolali¹,

Sam Boggs²

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Cited by 5 publications

(1 citation statement)

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“…The non-luminescent area in Figure 4B has a composition of Ab 99.6 and Figure 4D has a Ab 99.7. Partial albitization is commonly selective along cleavage planes, fractures, or other crystallographic features (Seyedolali and Boggs, 1996) ; however, albitization of the grains in the study area shows no relation to crystallographic features of the grains. We examined many feldspar grains in the Myogog Formation sandstones by EPMA, BSE, CL, and petrographic microscopy and found that they generally consist of albite.…”

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confidence: 99%

Albitization of feldspars in sandstones from the Upper Mesozoic Myogog Formation, Korea

Kwon

Shin

2000

Jour. Sed. Soc. Japan

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mentioning

confidence: 99%

Albitization of feldspars in sandstones from the Upper Mesozoic Myogog Formation, Korea

Kwon

Shin

2000

Jour. Sed. Soc. Japan

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Albitization of feldspars in sandstones from the Gohan (Permian) and Donggo (Permo-Triassic) formations, Gohan area, Kangwondo, Korea

Boggs

Seyedolali

et al. 1997

Geosci J

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Lithofacies, depositional, and diagenetic controls on the reservoir quality of the Mississippian mixed siliciclastic-carbonate system, eastern Anadarko Basin, Oklahoma, USA

Suriamin

Pranter

2021

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In the eastern Anadarko Basin of central Oklahoma, the variability of Mississippian lithofacies, diagenetic products, and reservoir quality are critical for reservoir development. We investigated lithofacies variability based on sedimentological characteristics and diagenetic alteration through integration of core and thin sections by using optical microscope, scanning electron microscope (SEM), energy dispersive x-ray diffraction spectroscope (EDX), and electron probe micro-analyzer (EPMA)-cathodoluminescence (CL) analyses. Based on detailed descriptions of 5 cores (~260 m; ~850 ft) and analysis of 34 thin sections, we concluded the Mississippian strata consists of 8 lithofacies that represent wave-influenced nearshore with restricted embayment (lagoon) and channel or lobe deposits. We observed diagenetic alteration including calcite cementation, mechanical compaction, albitization, quartz cementation, silicification, dolomitization, Fe-dolomite cementation, pyritization, and dissolution. A paragenesis scheme suggests that quartz cementation occurred earlier compared to albitization and Fe-dolomite cementation. The Fe-dolomite is the latest authigenic mineral formed whereas the quartz and calcite cement can be attributed to earlier diagenesis. The calcite, quartz, and Fe-dolomite cementation might have potentially increased the brittleness index and frackability of the rocks. Reservoir quality is relatively good in the channel or lobe deposits and is generally poor in the upper shoreface to upper offshore environments. The reservoir quality is significantly reduced by clays, calcite cement, and mechanical compaction. However, the dissolution of calcite cement and detrital grains tends to improve reservoir quality by forming secondary pores. This study proves that understanding the characteristic of lithofacies variation, depositional environments, and diagenetic alterations of the Mississippian strata is crucial for optimal development of the Mississippian reservoirs in the eastern Anadarko Basin. It provides a predictive framework that aids in reservoir characterization.

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Albitization of Miocene Deep-Sea Sandstones from the Japan Sea Backarc Basin

Cited by 5 publications

References 19 publications

Albitization of feldspars in sandstones from the Upper Mesozoic Myogog Formation, Korea

Albitization of feldspars in sandstones from the Upper Mesozoic Myogog Formation, Korea

Albitization of feldspars in sandstones from the Gohan (Permian) and Donggo (Permo-Triassic) formations, Gohan area, Kangwondo, Korea

Lithofacies, depositional, and diagenetic controls on the reservoir quality of the Mississippian mixed siliciclastic-carbonate system, eastern Anadarko Basin, Oklahoma, USA

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