Matches in SemOpenAlex for { <https://semopenalex.org/work/W2283172874> ?p ?o ?g. }
- W2283172874 endingPage "440" @default.
- W2283172874 startingPage "426" @default.
- W2283172874 abstract "A study of paleo-ocean redox environments is important for understanding the deposition of black shale and has practical implications for shale gas exploration. Here, we selected a total of 52 shale samples from JY1 Well, the first shale gas well of commercial exploitation in China, to analyze the redox conditions of Upper Ordovician Wufeng (O 3 w) and the first member in lower Silurian Longmaxi shale (S 1 l 1 ) in the Jiaoshiba area. Abundant pyrite framboids are observed in these units, with average framboid diameters ranging from 3.1 to 4.7 μm and maximum diameter about 10 μm. Analyses of redox-sensitive trace elements suggest the redox environment has evolved from an anoxic condition in the bottom of Member A to a dysoxic condition in the top of Member A, and to a dysoxic–oxic environment in Members B and C. Graptolite and radiolarian are discovered in these shale samples, indicating an oxygenated seafloor, which seems to be contradictory to the results from pyrite framboids and redox-sensitive trace elements. This contradiction is explained as follows: when the shale was deposited, the sedimentation was dominated by euxinic conditions; however, some oxygen may also occasionally migrate to the bottom water due to oxygen-deficient environment, deglaciation, and (or) strong upwelling of nutrient-enriched seawater, while the limited oxygen and anoxic environment is favorable for the preservation and accumulation of organic matter. Combined with the geological characteristics and redox conditions, Member A, especially the shales at the bottom of Member A, is expected to be the most favorable shale gas reservoir in the Jiaoshiba area." @default.
- W2283172874 created "2016-06-24" @default.
- W2283172874 creator A5003587397 @default.
- W2283172874 creator A5005315269 @default.
- W2283172874 creator A5010314188 @default.
- W2283172874 creator A5025742634 @default.
- W2283172874 creator A5039759980 @default.
- W2283172874 creator A5043882060 @default.
- W2283172874 date "2016-04-01" @default.
- W2283172874 modified "2023-10-02" @default.
- W2283172874 title "Paleo-ocean redox environments of the Upper Ordovician Wufeng and the first member in lower Silurian Longmaxi formations in the Jiaoshiba area, Sichuan Basin" @default.
- W2283172874 cites W1490832902 @default.
- W2283172874 cites W1505998757 @default.
- W2283172874 cites W1571253122 @default.
- W2283172874 cites W1648236804 @default.
- W2283172874 cites W1966744853 @default.
- W2283172874 cites W1969282993 @default.
- W2283172874 cites W1976431234 @default.
- W2283172874 cites W1977450181 @default.
- W2283172874 cites W1982560855 @default.
- W2283172874 cites W1985419952 @default.
- W2283172874 cites W1985506537 @default.
- W2283172874 cites W1989678893 @default.
- W2283172874 cites W1990066922 @default.
- W2283172874 cites W1993382121 @default.
- W2283172874 cites W1993527295 @default.
- W2283172874 cites W1994510458 @default.
- W2283172874 cites W1996614867 @default.
- W2283172874 cites W2001156023 @default.
- W2283172874 cites W2003194246 @default.
- W2283172874 cites W2003351070 @default.
- W2283172874 cites W2003688854 @default.
- W2283172874 cites W2005887772 @default.
- W2283172874 cites W2006247618 @default.
- W2283172874 cites W2008317069 @default.
- W2283172874 cites W2009839274 @default.
- W2283172874 cites W2014936152 @default.
- W2283172874 cites W2018866466 @default.
- W2283172874 cites W2019344269 @default.
- W2283172874 cites W2023008088 @default.
- W2283172874 cites W2023429750 @default.
- W2283172874 cites W2024788248 @default.
- W2283172874 cites W2028841209 @default.
- W2283172874 cites W2031792680 @default.
- W2283172874 cites W2032463773 @default.
- W2283172874 cites W2039171098 @default.
- W2283172874 cites W2040701129 @default.
- W2283172874 cites W2045375224 @default.
- W2283172874 cites W2048411777 @default.
- W2283172874 cites W2048945098 @default.
- W2283172874 cites W2050670879 @default.
- W2283172874 cites W2057391595 @default.
- W2283172874 cites W2057559725 @default.
- W2283172874 cites W2059298971 @default.
- W2283172874 cites W2059307407 @default.
- W2283172874 cites W2065208888 @default.
- W2283172874 cites W2065234137 @default.
- W2283172874 cites W2065620784 @default.
- W2283172874 cites W2065898335 @default.
- W2283172874 cites W2071570351 @default.
- W2283172874 cites W2072320126 @default.
- W2283172874 cites W2075177728 @default.
- W2283172874 cites W2075944686 @default.
- W2283172874 cites W2076115312 @default.
- W2283172874 cites W2080767354 @default.
- W2283172874 cites W2082941266 @default.
- W2283172874 cites W2083645617 @default.
- W2283172874 cites W2085279948 @default.
- W2283172874 cites W2100153488 @default.
- W2283172874 cites W2102581872 @default.
- W2283172874 cites W2102947943 @default.
- W2283172874 cites W2107813180 @default.
- W2283172874 cites W2111968947 @default.
- W2283172874 cites W2113418873 @default.
- W2283172874 cites W2119658472 @default.
- W2283172874 cites W2134189468 @default.
- W2283172874 cites W2134744054 @default.
- W2283172874 cites W2147032286 @default.
- W2283172874 cites W2147951832 @default.
- W2283172874 cites W2151820154 @default.
- W2283172874 cites W2152493152 @default.
- W2283172874 cites W2156433034 @default.
- W2283172874 cites W2156608310 @default.
- W2283172874 cites W2157354465 @default.
- W2283172874 cites W2158824434 @default.
- W2283172874 cites W2158897778 @default.
- W2283172874 cites W2163012474 @default.
- W2283172874 cites W2168621338 @default.
- W2283172874 cites W2168789549 @default.
- W2283172874 cites W2170995602 @default.
- W2283172874 cites W2204769636 @default.
- W2283172874 cites W2234637789 @default.
- W2283172874 cites W2254677029 @default.
- W2283172874 cites W2325234325 @default.
- W2283172874 cites W2331013380 @default.
- W2283172874 cites W313187678 @default.
- W2283172874 doi "https://doi.org/10.1139/cjes-2015-0210" @default.
- W2283172874 hasPublicationYear "2016" @default.