潞安礦區(qū)構(gòu)造-熱演化特征
發(fā)布時(shí)間:2018-06-14 15:41
本文選題:潞安礦區(qū) + 構(gòu)造; 參考:《煤田地質(zhì)與勘探》2016年06期
【摘要】:通過(guò)對(duì)潞安礦區(qū)區(qū)域地質(zhì)背景研究,在鏡質(zhì)體反射率測(cè)試分析的基礎(chǔ)上,對(duì)研究區(qū)多個(gè)井田含煤地層的埋藏史及其熱史進(jìn)行了恢復(fù)。結(jié)果表明,早三疊世—侏羅紀(jì),研究區(qū)構(gòu)造運(yùn)動(dòng)強(qiáng)烈,埋深增大至3 500 m左右,經(jīng)歷較高古地溫(120~135℃),熱流達(dá)到第一個(gè)峰值(76~89 m W/m2);侏羅紀(jì)晚期—早白堊世,受燕山期火山運(yùn)動(dòng)及深層侵入巖影響,研究區(qū)含煤地層溫度驟升至160~180℃并伴隨出第二個(gè)古熱流峰值(90~99 m W/m2)。通過(guò)比對(duì),認(rèn)為沁水盆地東南緣潞安礦區(qū)所處構(gòu)造 熱演化程度較沁水盆地中部偏高。
[Abstract]:Based on the analysis of vitrinite reflectance, the burial history and thermal history of coal-bearing strata in several coalfields in Luan mining area were recovered. The results show that during the early Triassic-Jurassic period, the tectonic movement in the study area was strong, the buried depth increased to about 3 500 m, the heat flow reached the first peak value of 7689 m W / m2, and the depth of burial increased to about 3 500 m, and the heat flow reached the first peak value, from late Jurassic to early Cretaceous. Under the influence of Yanshanian volcanic movement and deep intrusive rocks, the temperature of coal-bearing strata in the study area has risen sharply to 160 ~ 180 鈩,
本文編號(hào):2017974
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