本文選題：北京凹陷　切入點(diǎn)：磁性地層　出處：《中國(guó)地質(zhì)》2016年02期

【摘要】：北京凹陷受黃莊—高麗營(yíng)斷裂與南苑—通縣斷裂共同控制,形成于古近—新近紀(jì)。凹陷北緣在第四紀(jì)由于順義斷裂的強(qiáng)烈活動(dòng)解體,形成2個(gè)新的凹陷,后沙峪凹陷和俸伯凹陷。文章在后沙峪凹陷內(nèi)開(kāi)展了鉆孔ZK19的第四紀(jì)磁性地層研究,結(jié)合光釋光測(cè)年結(jié)果獲得鉆孔ZK19早更新世、中更新世、晚更新世和全新世地層底板埋深分別為434 m、128 m、29.9 m和1.35 m。通過(guò)與俸伯凹陷內(nèi)鉆孔ZK12-2進(jìn)行沉積地層厚度與沉積速率的對(duì)比分析,探討了順義斷裂第四紀(jì)以來(lái)的活動(dòng)特點(diǎn),從而對(duì)北京凹陷北緣盆地演化進(jìn)行了探討。研究表明,順義斷裂在第四紀(jì)早更新世的強(qiáng)烈活動(dòng)最終造成了北京凹陷北緣盆地的解體;中更新世,順義斷裂相對(duì)于黃莊—高麗營(yíng)斷裂活動(dòng)性不甚明;晚更新世,順義斷裂相對(duì)于黃莊—高麗營(yíng)斷裂再次強(qiáng)烈活動(dòng),加速了北京凹陷北緣盆地的分化;全新世,順義斷裂強(qiáng)烈活動(dòng)并造成了地表地裂縫的發(fā)育和建筑物的破壞。
[Abstract]:The Beijing sag is controlled by the Huangzhuang-Gaoliying fault and the Nanyuan-Tongxian fault and formed in the Paleogene-Neogene. The north margin of the depression disintegrated in the Quaternary due to the strong activity of the Shunyi fault, forming two new sags. In this paper, Quaternary magnetic stratigraphy of borehole ZK19 in Houshayu sag has been studied. The early Pleistocene and Middle Pleistocene of borehole ZK19 have been obtained in combination with the results of photoluminescence dating. The buried depth of strata bottom in late Pleistocene and Holocene are 434m ~ 128m ~ 29.9 m and 1.35m respectively. The characteristics of activity since Quaternary of Shunyi fault are discussed by comparing and analyzing the thickness and rate of sedimentary strata with ZK12-2 in Ringbo sag. The study shows that the strong activity of Shunyi fault during the early Quaternary Pleistocene resulted in the disintegration of the basin in the northern margin of the Beijing Sag and the Middle Pleistocene. The activity of Shunyi fault is not clear relative to Huangzhuang-Gaoliying fault, and the late Pleistocene, Shunyi fault is strongly related to Huangzhuang-Gaoliying fault, which accelerates the differentiation of the northern margin basin of Beijing sag; Holocene, The Shunyi fault was strongly active and resulted in the development of ground fissures and the destruction of buildings.
【作者單位】： 北京市地質(zhì)調(diào)查研究院;中國(guó)地質(zhì)大學(xué)生物地質(zhì)與環(huán)境地質(zhì)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：北京市國(guó)土資源局“北京平原區(qū)活動(dòng)斷裂監(jiān)測(cè)專項(xiàng)地質(zhì)調(diào)查項(xiàng)目”(京國(guó)土環(huán)【2009】308號(hào)文)資助~~
【分類號(hào)】：P542;P512.2

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