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鄂尔多斯盆地系统U、K、Th含量和地壳结构分层的综合研究表明,盆地莫霍面的热流平均值为0.37HFU,比华北地洼型活化盆地(0.64~0.97HFU)要低得多,尚有稳定构造区的热流特点。盆地地表平均热流值为1.446HFU,与全球大陆中生代地洼型造山区(1.45HFU)很接近,说明鄂尔多斯残留地台型盆地,从大地构造性质角度上看,正趋于向活化的方向发展。从地表到莫霍面,各界面现今热流的分布形式一致,热流的变化梯度和趋势也一致,表明研究区热流场的表现形式,受上地幔热场格局的控制。盆地各界面现今热流北西低、南东高,在吴旗-靖边及其往两端延伸一线,存在一个明显的NEE向梯度带,是油气在热动力驱使下而分散或富集的重要场所。
A comprehensive study of U, K, Th contents and crustal structure stratigraphy in the Ordos Basin shows that the average value of the heat flow over the Moho in the basin is 0.37HFU, which is lower than that of the depression in the depression depression of North China (0.64-0.97HFU) Much more, there is still a stable structure of the heat flow characteristics. The average surface heat flow in the basin is 1.446HFU, which is close to that of the Mesozoic depression in the world (1.45HFU), indicating that the Ordos residual platform basin is tending towards the direction of activation from the perspective of tectonics development of. From the earth's surface to the Moho, the distribution pattern of current heat fluxes in each interface is the same, and the gradient and trend of heat flux are also consistent, which shows that the heat flow field in the study area is controlled by the thermal field pattern in the upper mantle. At the interface between the basin and the basin, the current heat flux is low in the northwest and high in the south and east. At the Wuqi-Jingbian and its ends extend to the first line, there is a distinct NEE gradient zone, which is an important place where oil and gas are dispersed or enriched driven by thermal power .