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世界地质 2022, 41(3) 437-450 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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基础地质 |
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鄂尔多斯盆地东缘临兴地区石炭—二叠系抱粉组合 |
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魏文艳,杨雄涛,邱琨祁,陈书伟,庾永钊,石松涛 |
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中海油能源发展股份有限公司 工程技术分公司, 天津 300452 |
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摘要:
鄂尔多斯盆地临兴区块的多口探井中发现了丰富的石炭—二叠系的抱粉化石, 为了建立该地区的生物地层划分标准, 将该地区与华北克拉通石炭—二叠纪时期的抱粉组合进行了详细的对比, 建立了 4 个抱粉组合: Cyclogranisporites--Denosporites-Florinites组合 ( l), 归属于太原组; Sinulatisporites-- Gulisporites-Punctatisporites组合 ( II), 归属于山西组; Punctatisporites--Limitisporites--Punctatosporites组合 ( III ), 归属于下石盒子组; Vitreisporites-Pteruchipollenites-Vittatina 组合 ( N), 归属于上石盒子组。该研究成果为华北克拉通石炭—二叠系古植被和古气候重建提供了新的抱粉数据, 古气候恢复表明, 太原组—山西组沉积时期, 为温暖潮湿的热带--亚热带气候; 下石盒子组时期气候开始偏干旱, 上石盒子组沉积时期, 气候则持续向干旱环境转变。 |
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关键词:
太原组
山西组
下石盒子组
上石盒子组
抱粉组合
鄂尔多斯盆地东缘
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Carboniferous--PermiansporopoIIenassembIagesfrom Linxing area, easternmarginofOrdosBasin |
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WEIWenyan, YANGXiongtao, QIUKunqi, CHENShuwei, YUYongzhao, SHISongtao |
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CNOOCEnerTech -Drilling &Production Co, Tianjin 300452, China |
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Abstract:
Abundantsporesand po11en havebeen discovered from theCarboniferous-Permian stratain many exp1oration we11coresfrom Linxingarea, eastern margin ofOrdosBasin.Detai1ed corre1ation oftheassemb1ages with thoseon North Chinacraton wasmadein ordertosetbiostratigraphiccritariafortheexp1oration and deve1op- mentofcoa1-bed methanein thisarea.Foursporopo11en assemb1ageswererecognized and named in ascendingor-der: Cyclogranisporites-Denosporites-Florinitesassemb1age( l) from theTaiyuan Formation, Sinulatisporites-Gu- lisporites-Punctatisporitesassemb1age( II) from theShanxiFormation, Punctatisporite-Limitisporites-Punctato- sporitesassemb1age( III ) from theLowerShiheziFormation, and Vitreisporites-Pteruchipollenites-Vittatina assem- b1age( N) fromtheUpperShiheziFormation.Thisa1soprovidesnewpa1yno1ogica1dataforreconstructingtheCar- boniferousand Permian pa1eovegetation and pa1eoc1imatein theNorth Chinacraton.Thereconstructed pa1eoc1i-matesshowthatthec1imateduringthedeposition ofTaiyuan and Shanxiformationsareofawarmand humid tropi- ca1-subtropica1c1imate, whi1ethatof1owerShiheziFormation isofas1ight1yarid c1imate, and fina11ythatofupper ShiheziFormation isan arid c1imate.
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Keywords:
Taiyuan Formation
ShanxiFormation
1owerShiheziFormation
upperShiheziFormation
sporopo11en assemb1ages
eastern margin ofOrdosBasin
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本刊中的类似文章 |
1.张明达,郭晓宇,史骁.河南禹州早二叠世山西组二1煤组植物化石[J]. 世界地质, 2022,41(1): 1-14 |
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