發(fā)布時(shí)間：2018-04-10 20:45

  本文選題：和田南部地區(qū) + 西昆侖��； 參考：《地球科學(xué)進(jìn)展》2016年05期

【摘要】：為配合新疆和田南部地區(qū)1∶5萬航磁調(diào)查工作,掌握該區(qū)巖石磁性特征,填補(bǔ)這一地區(qū)缺少巖石磁化率資料空白,2013—2015年在該地區(qū)開展了區(qū)域性巖石磁化率調(diào)查工作,完成331處物性點(diǎn)測量,獲得有效體積磁化率數(shù)據(jù)10 256個(gè),采集巖石樣品270塊。對(duì)實(shí)測資料進(jìn)行了詳細(xì)地分類統(tǒng)計(jì),進(jìn)一步分析發(fā)現(xiàn)該區(qū)巖石磁化率主要受巖石中礦物成分、結(jié)構(gòu)以及巖石時(shí)空分布影響。中、酸性侵入巖磁化率主要由巖石中黑云母的含量決定,黑云母對(duì)中、酸性侵入巖磁化率的貢獻(xiàn)要高于其他超順磁性礦物的貢獻(xiàn)。對(duì)于相同巖性的巖石磁化率具有沿深大斷裂分布的磁化率值高,沿次級(jí)斷裂分布的磁化率值相對(duì)低的空間分布特點(diǎn)和早古生代中、酸性侵入巖磁化率高于晚古生代中、酸性侵入巖的時(shí)間分布特點(diǎn)。研究結(jié)果為航磁資料解釋、地質(zhì)找礦、構(gòu)造演化研究提供了重要依據(jù)。
[Abstract]:In order to cooperate with the aeromagnetic investigation of 12: 50 000 in southern Hotan, Xinjiang, to grasp the rock magnetic characteristics in this area, and to fill in the lack of rock susceptibility data in this area, a regional investigation of rock susceptibility was carried out in this area from 2013 to 2015.331 physical property points were measured, 10 256 effective volumetric susceptibility data were obtained and 270 rock samples were collected.The detailed classification and statistics of the measured data show that the magnetic susceptibility of rocks in this area is mainly affected by the mineral composition, structure and temporal and spatial distribution of rocks.The magnetic susceptibility of acid intrusive rocks is mainly determined by the content of biotite in rocks, and the contribution of biotite pair to the magnetic susceptibility of acid intrusive rocks is higher than that of other superparamagnetic minerals.For the rock of the same lithology, the magnetic susceptibility distribution along the deep and large faults is high, and the magnetic susceptibility along the secondary faults is relatively low. The magnetic susceptibility of the acid intrusive rocks in the early Paleozoic is higher than that in the late Paleozoic, and the magnetic susceptibility of the acid intrusive rocks is higher than that of the later Paleozoic.Time distribution characteristics of acid intrusive rocks.The results provide important basis for aeromagnetic data interpretation, geological prospecting and tectonic evolution.
【作者單位】： 中國國土資源航空物探遙感中心;河北地質(zhì)大學(xué)勘查技術(shù)與工程學(xué)院;天津華北地質(zhì)勘查局;
【基金】：國家高技術(shù)研究發(fā)展計(jì)劃項(xiàng)目“航空地球物理遙感綜合探測技術(shù)與解釋系統(tǒng)研究”(編號(hào):2013AA063905) 中國地質(zhì)調(diào)查局和天津華北地質(zhì)勘查局礦業(yè)產(chǎn)業(yè)援疆項(xiàng)目所屬工作項(xiàng)目“新疆和田東三縣1∶5萬航磁調(diào)查”(編號(hào):12120113072800)資助~~
【分類號(hào)】：P631.2

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