黔北镇远牛蹄塘组黑色页岩沉积环境与有机质富集关系
【文章页数】:10 页
【部分图文】:
图1埃迪卡拉纪-寒武纪转折期扬子陆块古地理图??(改自?Yeasmin?et?al.,2017)??Fig.?1?Synthesized?paleogeographic?map?of?the??-
矿物、黏土矿物含量,??可将页岩划分为硅成鼠營?、钙质頁譽、黏土质頁岩和??:混合页岩4种主荽岩相.类型9硅质页苕可细分为诖??质页岩、富泥旌质麗岩、鬣钙硅质页岩、富钙/m跬质??页岩;钙质页菪可细分为钙质页岩、甯泥钙质页岩、??富硅钙质页岩、富泥/硅钙质页'岩¥黏玉赓3T岩可细....
图1埃迪卡拉纪-寒武纪转折期扬子陆块古地理图??(改自?Yeasmin?et?al.,2017)??Fig.?1?Synthesized?paleogeographic?map?of?the??Yangtze??
矿物、黏土矿物含量,??可将页岩划分为硅成鼠營?、钙质頁譽、黏土质頁岩和??:混合页岩4种主荽岩相.类型9硅质页苕可细分为诖??质页岩、富泥旌质麗岩、鬣钙硅质页岩、富钙/m跬质??页岩;钙质页菪可细分为钙质页岩、甯泥钙质页岩、??富硅钙质页岩、富泥/硅钙质页'岩¥黏玉赓3T岩可细....
图4?ZX井牛蹄塘组页岩主量元素(a)、微量元素(b)分布??Fig.?4?Major?elements?(a)?and?trace?elements?(b)?of?Niutitang?shale?at?well?ZX??
8??1??99??SL??S12??780.?88??44??26??7??7??10??8.?63??40??60??SL??S13??787.?18??75??8??7??10??8.?01??37??63??SL??S14??791.?41??49??27??6??4??....
图5?ZX井牛蹄塘组页岩主量元素(a)、微量元素(b)组合关系判断热水沉积??Fig.?5?Relationship?of?different?major?elements?groups?(a)?and?trace?element?groups?(b)?of?Niutitang?shale?at?well?ZX??
体环境??下,海水中鱗有充足的M〇元素,相应的进人沉积物??中的Mo/TOC隹也较高在烏限封闭的环境中,M.q??元素的补绐缓慢甚至停止造成底层水中Mo浓度??的降低,尤其在缺氧还原条件下,Mo元素被沉积物??吸:收富_的速.率大于补_遽率,_應歸傘中的低??2?400??::裏....
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