本文選題：北京凹陷　切入點：磁性地層　出處：《中國地質》2016年02期

【摘要】：北京凹陷受黃莊—高麗營斷裂與南苑—通縣斷裂共同控制,形成于古近—新近紀。凹陷北緣在第四紀由于順義斷裂的強烈活動解體,形成2個新的凹陷,后沙峪凹陷和俸伯凹陷。文章在后沙峪凹陷內(nèi)開展了鉆孔ZK19的第四紀磁性地層研究,結合光釋光測年結果獲得鉆孔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。通過與俸伯凹陷內(nèi)鉆孔ZK12-2進行沉積地層厚度與沉積速率的對比分析,探討了順義斷裂第四紀以來的活動特點,從而對北京凹陷北緣盆地演化進行了探討。研究表明,順義斷裂在第四紀早更新世的強烈活動最終造成了北京凹陷北緣盆地的解體;中更新世,順義斷裂相對于黃莊—高麗營斷裂活動性不甚明;晚更新世,順義斷裂相對于黃莊—高麗營斷裂再次強烈活動,加速了北京凹陷北緣盆地的分化;全新世,順義斷裂強烈活動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】： 北京市地質調查研究院;中國地質大學生物地質與環(huán)境地質國家重點實驗室;
【基金】：北京市國土資源局“北京平原區(qū)活動斷裂監(jiān)測專項地質調查項目”(京國土環(huán)【2009】308號文)資助~~
【分類號】：P542;P512.2

【相似文獻】

相關期刊論文 前1條

1 彭元橋;高勇群;楊逢清;殷鴻福;G.R.Shi;;南非陸相二疊系—三疊系界線研究進展[J];地質科技情報;2006年01期

，

本文編號：1678784