桂林理工大学学报
桂林理工大學學報
계림리공대학학보
JOURNAL OF GUILIN UNIVERSITY OF TECHNOLOGY
2015年
1期
15-28
,共14页
裂变径迹%新生代%隆升速率%沁水盆地%太行山
裂變徑跡%新生代%隆升速率%沁水盆地%太行山
렬변경적%신생대%륭승속솔%심수분지%태행산
Taihang Mountains%Qinshui basin%fission track%Cenozoic%uplifting speed
对采自太行山西侧的沁水盆地沁参1井及邻区12个样品进行了磷灰石裂变径迹分析,结合太行山东侧石家庄-邢台地区9个样品的磷灰石/锆石裂变径迹结果,综合分析表明:太行山在新生代的抬升是不均衡的,前新生代的剥蚀夷平-准平原化后,古近纪初经历了隆升,再到古近纪末的剥蚀夷平,最后到新近纪的快速隆升。现今太行山的主体是新近纪以来隆升的,即23~18 Ma以来,其中快速隆升期为上新世以来,隆升幅度为4000 m,隆升的平均速率为0.18 mm/a。新近纪以来太行山的隆起主要来自于3个因素:①欧亚板块碰撞的远程效力;②热冷却;③构造负荷综合作用。新生代太行山的抬升与其周缘盆地和山脉的演化存在着对应关系,为一个区域性事件。
對採自太行山西側的沁水盆地沁參1井及鄰區12箇樣品進行瞭燐灰石裂變徑跡分析,結閤太行山東側石傢莊-邢檯地區9箇樣品的燐灰石/鋯石裂變徑跡結果,綜閤分析錶明:太行山在新生代的抬升是不均衡的,前新生代的剝蝕夷平-準平原化後,古近紀初經歷瞭隆升,再到古近紀末的剝蝕夷平,最後到新近紀的快速隆升。現今太行山的主體是新近紀以來隆升的,即23~18 Ma以來,其中快速隆升期為上新世以來,隆升幅度為4000 m,隆升的平均速率為0.18 mm/a。新近紀以來太行山的隆起主要來自于3箇因素:①歐亞闆塊踫撞的遠程效力;②熱冷卻;③構造負荷綜閤作用。新生代太行山的抬升與其週緣盆地和山脈的縯化存在著對應關繫,為一箇區域性事件。
대채자태행산서측적심수분지심삼1정급린구12개양품진행료린회석렬변경적분석,결합태행산동측석가장-형태지구9개양품적린회석/고석렬변경적결과,종합분석표명:태행산재신생대적태승시불균형적,전신생대적박식이평-준평원화후,고근기초경력료륭승,재도고근기말적박식이평,최후도신근기적쾌속륭승。현금태행산적주체시신근기이래륭승적,즉23~18 Ma이래,기중쾌속륭승기위상신세이래,륭승폭도위4000 m,륭승적평균속솔위0.18 mm/a。신근기이래태행산적륭기주요래자우3개인소:①구아판괴팽당적원정효력;②열냉각;③구조부하종합작용。신생대태행산적태승여기주연분지화산맥적연화존재착대응관계,위일개구역성사건。
Apatite fission track rmochronolgy analysis from 12 samples in Well Qincan 1 of Qinshui basin,com-bined with the apatite -zircon fission track analysis from 9 samples of Shijiazhuang Xingtai,the results show that the uplifting of Taihang Mountains was unbalanced.Moreover,Taihang Mountains experienced pre-Cenozo-ic denudation-peneplaned process to uplift-erosion of the Paleogene,till the rapid uplifting of the Neogene. Since 23-18 Ma,Taihang Mountains main body formed.The rapid uplifting occurred in Taihang Mountains during the Pliocene,about 4 000 m uplifting and the average rate of uplifting 0.18 mm/a.The Neogene uplif-ting of Taihang Mountains was attributed to three factors:① the remote effect of the Eurasian plate collision;② the geothermal cooling;③ the structural loads.The Cenozoic uplifting events are corresponding with the tectonic evolution of the adjacent basins and mountains,a regional uplifting event in North China.