Through the study of the example of shaxi porphyry body in anhui province , the authors first figured out the storage time of plagioclase phenocrysts , then calculated the nucleation rate and growth rate of the crystals and , on such a basis , established the thermal model for cooling of the hypabyssal magmatic system 本文试图通过对安徽沙溪斑岩体进行实例研究,先求出斜长石斑晶的存储时间,再算得晶体成核速率和生长速率,进而建立起浅成岩浆体系冷却的热模型。
2.
Research and analysis were carried out on yangshan super - large gold deposit in terms of regional background for tectonic evolution and development and geological and geochemical characteristics for metallogenesis , and the results indicate that it is a hydrothermal ( medium to low temperature type ) super - large gold deposit formed in mesozoic to cenozoic activated orogens or at hypabyssal positions in the crust 摘要从阳山超大型金矿床的区域构造演化发展背景、成矿地质地球化学等特征进行的研究与分析表明,它是形成、产出在中新生代活化造山带、地壳高位浅成的中低温热液型超大型金矿床。
3.
By physiognomy feature , it could be divided into three types of thermal structure : positive dome model , negative collapse model and border dome core collapse model . based on the depth degree or magma - thermal influenced , it could be divided into five types of thermal structure : ( ancient ) geothermal anomaly focus region model , superficial volcano eruption hydro - thermalism and hypabyssal intrusive model , thermal anticline ( thermal dome ) model , mid - deep intrusive model , deep mantle ( crust ) thermal plume model ; and put forward a perfect model of the thermal structure . there are many interaction system could be induced into a systematic thermal interaction , include : ocean - continent system , basin - mountain interaction , superficial and mid - deep crust - mantle interaction , crust - mantle commingle interaction , vertical thermal interaction ( delamination ) etc . 依据地貌形态分为三类:正向穹窿型、负向塌陷型、边隆核陷型:依据岩浆-热力作用影响的深浅程度或深度分为五类: (古)地热异常群集区、表浅层火山喷发-热液活动与浅成侵入型、热力背斜(热穹窿) 、中深层侵入型、深部地幔(地壳)热柱型;提出了热力构造作用空间分布的理想模式,将洋陆系统、盆山作用、浅表与中深部壳幔作用、壳幔混合、垂向热力作用(拆沉)等纳入一个整体统一的热力作用系统中,为盆地动力学研究打开了一个新窗口;研讨了热力构造研究方法。
4.
The copper , iron , nickel and silver deposits might be assigned to four metallogenic series : i . the metallogenic subseries of copper , molybdenum , gold , silver deposit related to late devonian - early carboniferous basic - intermediate - acid hypabyssal intrusive - eruptive rocks ; ii . the metallogenic subseriesof iron , copper , zinc deposits related to early carboniferous basic - intermediate - acid volcanic - intrusive rocks ; iii . the metallogenic subseries of copper , silver , iron deposits related to middle - late carboniferous basic - intermediate - acid volcanic - intrusive rocks ; iv . the metallogenic subseries of copper , nickel and platinum group deposits related to late carboniferous - early permian basic - ultrabasic rocks ; 3 , division of regional major metallogenic belts on the basis of the previous work conducted and by following the principles , grounds and methods of the division of metallogenic belts , areas and fields , . in light of this , metallogenic belts of grade iv were divided 1 、按照成矿系列理论的学术指导思想,将研究区华里西期铜矿床成矿系列划分为四个成矿系列亚系列: 、晚泥盆?早石炭世延东?土屋?三岔口与中酸性岩浆侵入活动有关的cu 、 mo 、 au矿床成矿亚系列、早石炭世与岩浆作用有关的铁、铜、金、银矿床成矿亚系列、中石炭世与岩浆作用有关的cu 、 fe 、 ag 、 au矿床成矿亚系列、晚石炭世-早二叠世与幔源基性?超基性岩有关的铜、镍、铂族矿床成矿亚系列并从地层、岩浆岩、控矿构造、地球化学、成矿特征等方面对各成矿亚系列进行了详细论述。
5.
There are two stages to crux maifan stone ' s formation , the first stage is the forming stage of primary material , that is to say , the stage of mother rock formation , in this stage , the latter hypabyssal intrusive of crystallization fractionation and self - metamorphic process are an important factor to make sure them have many trace elements 麦饭石的形成中有两个阶段是十分关键的,第一个阶段是基本物质的形成阶段,即母岩的形成阶段。在这一阶段中岩浆分异结晶晚期的浅成侵入以及自变质作用,是保证其富含营养微量元素的重要条件。