地球
地毬
지구
EARTH
2014年
2期
41-42
,共2页
平顶山-二户来%白垩系%小岭组%火山岩%旋回%源
平頂山-二戶來%白堊繫%小嶺組%火山巖%鏇迴%源
평정산-이호래%백성계%소령조%화산암%선회%원
Pingdingshan -Erhulai%District Cretaceous%Komine group%volcanic eruption cycles%alkaline%shell source
平顶山-二户来一带,白垩系小岭组发育,主要位于平顶山盆地、二户来盆地中,其岩性主要为中-酸性火山岩。岩石地球化学特征研究表明,小岭组火山岩具明显的富与碱有关元素Zr、Hf、Th、U,贫铁族元素Ti、V、Cr、Co、Ni及成矿元素Pb的特点。属于同源碱性火山岩系,岩浆演化序列为中性岩→酸性岩。火山岩成因与板块构造活动有关,岩浆来源于壳源。
平頂山-二戶來一帶,白堊繫小嶺組髮育,主要位于平頂山盆地、二戶來盆地中,其巖性主要為中-痠性火山巖。巖石地毬化學特徵研究錶明,小嶺組火山巖具明顯的富與堿有關元素Zr、Hf、Th、U,貧鐵族元素Ti、V、Cr、Co、Ni及成礦元素Pb的特點。屬于同源堿性火山巖繫,巖漿縯化序列為中性巖→痠性巖。火山巖成因與闆塊構造活動有關,巖漿來源于殼源。
평정산-이호래일대,백성계소령조발육,주요위우평정산분지、이호래분지중,기암성주요위중-산성화산암。암석지구화학특정연구표명,소령조화산암구명현적부여감유관원소Zr、Hf、Th、U,빈철족원소Ti、V、Cr、Co、Ni급성광원소Pb적특점。속우동원감성화산암계,암장연화서렬위중성암→산성암。화산암성인여판괴구조활동유관,암장래원우각원。
Pingdingshan-Erkoulai Distric Cretaceous Ridge group development,mainly located in Pingdingshan basin,two basins,the main lithology is acidic volcanic rocks.The study of geochemical characteris-tics of the Komine Group reflects that volcanics with obvious rich ele-ments, such as Zr,Hf,Th,U,iron-deficient group elements Ti, V, Cr, Co, Ni and ore-forming elements Pb characteristics.Belonging to the ho-mologous alkaline volcanic rocks and magmatic evolution sequence neutral rock-acid rock. Volcanic rocks are form because of plate tec-tonics,volcanic rocks,magma is derived from the shell source.