泥河湾盆地磁性地层学研究——以东谷索和岑家湾剖面为例

The Nihewan Basin is a key area for research into human occupation at high northern latitudes in northeast Asia after the initial expansion of early humans out of Africa. Well-developed late Cenozoic lacustrine deposit sequence in this basin offers a unique opportunity to address this issue. In this thesis, detailed magnetostratigraphic investigation coupled with mineral magnetism was conducted on the Donggutuo and Cenjiawan sections in the eastern basin, where lacustrine deposits sequences containing the Donggutuo, Maliang and Cenjiawan Paleolithic sites are well developed. The sequences are mainly composed of grayish-white clays, grayish-green clayey silts, grayish-yellow silts and fine-grained brown sands, which have recorded reliable polarity variations of geomagnetic field.Characteristics of the anisotropy of magnetic susceptibility show that the sediments have preserved typical original magnetic fabric for sediments, indicating that the strata were developed in a low-energy lake environment and were never perturbed by tectonic stress since deposition. High-temperature magnetic susceptibility measurements (x-T) of representative specimens and demagnetization experiments indicate that the dominant magnetic mineral and remanent carrier at the two sections is magnetite. In addition, hematite and possibly minor maghemite exists in some portions of the sequences. The majority of the samples have relatively simple demagnetization behaviors. After removal of soft magnetic components, the stable characteristic remanent magnetizations (ChRMs) are isolated, which can represent the original remanences.The Donggutuo section mainly records the Brunhes chron, the Matuyama chron and the Jaramillo subchron. The Maliang stone artifact layer occurs just below the Brunhes/Matuyama boundary; and the Donggutuo artifact layer, just below the Jaramillo onset. Accordingly, the Maliang and Donggutuo sites can be dated at about 0.78 Ma and 1.1 Ma, respectively. The Cenjiawan section has recorded a portion of the Matuyama chron. After correlations with the magnetic polarity sequence of the Majuangou section adjacent to this section, the Cenjiawan stone artifact layer is determined below the Jaramillo onset, with an estimated age of 1.1 Ma.To establish the magnetic stratigraphy framework for the lacustrine sediments in the eastern Nihewan Basin, this thesis draws on the magnetic polarity sequences of the Donggutuo and Cenjiawan sections as well as previously obtained results from the Majuangou, Haojiatai, Xiaochangliang and Donggou sections for magnetostratigraphic correlations. The accumulation of the lacustrine sequences at the east margin of the basin commenced from about 2.0 Ma. These sequences record not only the coarse magnetostratigraphy of the Brunhes normal chron and the middle to late Matuyama reverse chron (that is, the Jaramillo and Olduvai subchrons) but also some of the fine structure (that is, the Kamikatsura, Santa Rosa, Punaruu and Cobb Mountain geomagnetic events). The development of the Nihewan paleolake experienced at least twice large expansion periods, split by a large-scale shrinking event in the middle period of the paleolake development. The accumulation of the lacustrine strata was controlled by fault activities.After temporal control for the Donggutuo, Maliang and Cenjiawan Paleolithic sites were established, the three sites along with other well-dated Paleolithic/hominin sites of the Early Pleistocene in North China were combined to construct a chronological sequence of early human occupation in northeastern Asia. Furthermore, after incorporation of paleoclimate changes retrieved from Chinese loess/paleosol sequences and marine sediments, it could be possibly proposed that human groups of the Early Pleistocene in North China might have survived repeated warm/humid interglacials and cold/dry glacials, which were paced by earth orbital variations of the Eastern paleomonsoon.

鄂尔多斯盆地苏里格气田储层次生孔隙性质与分布预测

Permian reservoir in Sulige area of Ordos Basin, on which this paper focused, belongs to fluvial-delta lithofacies. The majority formations in this area are complicated channel sand deposit with serious inhomogeneity which makes natural gas exploration be very tough in this area. This inhomogeneity can be found everywhere both in large horizontal area and vertical profile of inner and interbedded formations.This paper studied the inhomogeneity characteristic of Permian formation in sulige area of Ordos Basin according to the logging data.Correlating with core data, a criterion to distinguish different type of reservoirs by using logging data is determined after the study of logging response is done considering the diverse conditions of deposit environments, lithology and reservoir space. The characteristic relationships between the various type formations and logging responses fully and systemically are established.It investigated reservoir parameter calculation methods amply. Combining the conventional and special logging data, basing on the feature of low porosity -permeability formation of sulige area, a set of methods to calculate reservoir parameters was formed including primary porosity, secondary porosity, fracture porosity, permeability and water saturation under the conditions of both low porosity-permeability and inhomogenous reservoirs. One thing should be pay close attention is the parameter M for calculating saturation. It is found that the M in low porosity -permeability formation decreases as the porosity decrease, which is opposite to the law that M increases as the porosity decrease in the formation with intermediate to high porosity and permeability. This view has innovated the traditional theory and offered theory basis for the logging interpretation of low porosity - permeability reservoir. Meanwhile it also improved the Arqi formula theoretically and enhanced the logging interpretation accuracy and rescued a number of formations which has been thought to be hopeless according to the old theory.By using advantage logging interpretation procedure, a territorial synthetic geology evaluation to the inhomogeneous reservoir was completed basing on the single well interpretation. All the reservoir evaluation parameters including sand formation thickness, primary porosity, secondary porosity were calculated and evaluated. The rules of changing and development for sand formation thickness, sand physical properties and secondary porous were found at different formations of upper part of the Member 8 of Shihezi, lower part of the Member 8 of Shihezi, the Member 1 of shanxi and the Member 2 of shanxi individually. Evaluation and Correlation of these five formations were also completed and one conclusion was arrived: upper part of the Member 8 of Shihezi formation has the best performance followed by the lower part of the Member 8 of Shihezi, the Member 1 of shanxi and the Member 2 of shanxi formation.After studied the relationship between reservoir deposition characteristic and the natural gas richness, it is regarded that reservoir inhomogeneity is the key issue of the impaction on the natural gas. Natural gas in Sulige gas field was mainly accumulated in sands of channel bar, distributary channel and debouchure bar. Especially, the quartz sand with rich of secondary porous space has obvious better physical properties than other reservoir and usually can forms the concentration of natural gas.

陆相砂泥岩层序的高精度检测方法研究及应用

Ordos Basin is a typical cratonic petroliferous basin with 40 oil-gas bearing bed sets. It is featured as stable multicycle sedimentation, gentle formation, and less structures. The reservoir beds in Upper Paleozoic and Mesozoicare are mainly low density, low permeability, strong lateral change, and strong vertical heterogeneous. The well-known Loess Plateau in the southern area and Maowusu Desert, Kubuqi Desert and Ordos Grasslands in the northern area cover the basin, so seismic data acquisition in this area is very difficult and the data often takes on inadequate precision, strong interference, low signal-noise ratio, and low resolution. Because of the complicated condition of the surface and the underground, it is very difficult to distinguish the thin beds and study the land facies high-resolution lithologic sequence stratigraphy according to routine seismic profile. Therefore, a method, which have clearly physical significance, based on advanced mathematical physics theory and algorithmic and can improve the precision of the detection on the thin sand-peat interbed configurations of land facies, is in demand to put forward.Generalized S Transform (GST) processing method provides a new method of phase space analysis for seismic data. Compared with wavelet transform, both of them have very good localization characteristics; however, directly related to the Fourier spectra, GST has clearer physical significance, moreover, GST adopts a technology to best approach seismic wavelets and transforms the seismic data into time-scale domain, and breaks through the limit of the fixed wavelet in S transform, so GST has extensive adaptability. Based on tracing the development of the ideas and theories from wavelet transform, S transform to GST, we studied how to improve the precision of the detection on the thin stratum by GST.Noise has strong influence on sequence detecting in GST, especially in the low signal-noise ratio data. We studied the distribution rule of colored noise in GST domain, and proposed a technology to distinguish the signal and noise in GST domain. We discussed two types of noises: white noise and red noise, in which noise satisfy statistical autoregression model. For these two model, the noise-signal detection technology based on GST all get good result. It proved that the GST domain noise-signal detection technology could be used to real seismic data, and could effectively avoid noise influence on seismic sequence detecting.On the seismic profile after GST processing, high amplitude energy intensive zone, schollen, strip and lentoid dead zone and disarray zone maybe represent specifically geologic meanings according to given geologic background. Using seismic sequence detection profile and combining other seismic interpretation technologies, we can elaborate depict the shape of palaeo-geomorphology, effectively estimate sand stretch, distinguish sedimentary facies, determine target area, and directly guide oil-gas exploration.In the lateral reservoir prediction in XF oilfield of Ordos Basin, it played very important role in the estimation of sand stretch that the study of palaeo-geomorphology of Triassic System and the partition of inner sequence of the stratum group. According to the high-resolution seismic profile after GST processing, we pointed out that the C8 Member of Yanchang Formation in DZ area and C8 Member in BM area are the same deposit. It provided the foundation for getting 430 million tons predicting reserves and unite building 3 million tons off-take potential.In tackling key problem study for SLG gas-field, according to the high-resolution seismic sequence profile, we determined that the deposit direction of H8 member is approximately N-S or NNE-SS W. Using the seismic sequence profile, combining with layer-level profile, we can interpret the shape of entrenched stream. The sunken lenticle indicates the high-energy stream channel, which has stronger hydropower. By this way we drew out three high-energy stream channels' outline, and determined the target areas for exploitation. Finding high-energy braided river by high-resolution sequence processing is the key technology in SLG area.In ZZ area, we studied the distribution of the main reservoir bed-S23, which is shallow delta thin sand bed, by GST processing. From the seismic sequence profile, we discovered that the schollen thick sand beds are only local distributed, and most of them are distributary channel sand and distributary bar deposit. Then we determined that the S23 sand deposit direction is NW-SE in west, N-S in central and NE-SW in east. The high detecting seismic sequence interpretation profiles have been tested by 14 wells, 2 wells mismatch and the coincidence rate is 85.7%. Based on the profiles we suggested 3 predicted wells, one well (Yu54) completed and the other two is still drilling. The completed on Is coincident with the forecastThe paper testified that GST is a effective technology to get high- resolution seismic sequence profile, compartmentalize deposit microfacies, confirm strike direction of sandstone and make sure of the distribution range of oil-gas bearing sandstone, and is the gordian technique for the exploration of lithologic gas-oil pool in complicated areas.

Mantle-derived gaseous components in ore-forming fluids of the Xiangshan uranium

The Xiangshan U deposit, the largest hydrothermal U deposit in China, is hosted in late Jurassic felsic volcanic rocks although the U mineralization post dates the volcanics by at least 20 Ma. The mineralization coincides with intrusion of local mantle-derived mafic dykes formed during Cretaceous crustal extension in South China. Ore-forming fluids are rich in CO2, and U in the fluid is thought to have been dissolved in the form of UO2 (CO3)22− and UO2 (CO3) 34− complexes. This paper provides He and Ar isotope data of fluid inclusions in pyrites and C isotope data of calcites associated with U mineralization (pitchblende) in the Xiangshan U deposit. He isotopic compositions range between 0.1 and 2.0Ra (where Ra is the 3He/4He ratio of air=1.39×10−6) and correlates with 40Ar/36Ar; although there is potential for significant 3He production via 6Li(n,α)3H(β)3He reactions in a U deposit (due to abundant neutrons), nucleogenic production cannot account for either the 3He concentration in these fluids, nor the correlations between He and Ar isotopic compositions. It is more likely that the high 3He/4He ratios represent trapped mantle-derived gases. A mantle origin for the volatiles of Xiangshan is consistent with the δ13C values of calcites, which vary from −3.5‰ to −7.7‰, overlapping the range of mantle CO2. The He, Ar and CO2 characteristics of the ore-forming fluids responsible for the deposit are consistent with mixing between 3He- and CO2-rich mantle-derived fluids and CO2-poor meteoric fluids. These fluids were likely produced during Cretaceous extension and dyke intrusion which permitted mantle-derived CO2 to migrate upward and remobilize U from the acid volcanic source rocks, resulting in the formation of the U deposit. Subsequent decay of U within the fluid inclusions has reduced the 3He/4He ratio, and variations in U/3He result in the range in 3He/4He observed with U/3He ratios in the range 5–17×103 likely corresponding to U concentrations in the fluids b0.2 ppm.

织金新华磷矿成矿作用的微束分析研究

海相沉积磷块岩的成因研究，经历了一百多年的历史，学者先后提出了多种成因假说。但至今，沉积磷块岩的成因仍然是一个有争议的问题，尤其是对于具体的磷矿床，不同学者往往会有重要分歧。 沉积磷块岩之所以存在着多种成因假说之间的争议，存在着成磷机制的重要分歧，相当重要的原因就在于，大量宏观上的有关含磷岩系时空分布规律、沉积盆地岩相古地理景观、矿石微量元素、稀土元素地球化学和同位素地球化学等等研究的同时，缺少对含磷岩系磷酸盐组分内部结构微观上的深入解剖。由于许多磷灰石，不管是生物成因，或者是化学成因，或者是胶体化学成因，它们通常以（超）微细粒集合体的形式产出，偏光显微镜下都呈均质特征。所以，磷块岩成因研究必须引入现代先进的测试分析手段。 本文选择电子探针（EPMA）和分析型电子显微镜(AEM)，以织金新华磷矿为研究对象，研究磷酸盐组分的成因类型、各类型磷酸盐组分的微区成分、显微结构、磷酸盐的沉积富集形态及其精细至纳米级的精细结构，在此基础上讨论新华磷矿的成矿机制。 依据电子探针的背散射电子成像、扫描二次电子成像和微区成分分析的研究结果以及分析型电子显微镜的透射电子成像分析、选区电子衍射分析和微区能谱成分分析的研究结果，将织金新华磷块岩的磷酸盐组分划分为下列四种类型：碎屑磷灰石、无定形磷酸盐组分、生物屑磷灰石和球粒状磷酸盐。不同类型的磷酸盐具有不同的（超）显微结构，具有不同的成因过程。这种成因分类，突破了以往磷块岩岩石学研究中将胶磷矿当作新华磷矿磷酸盐唯一的产出形式的局限，是研究其成矿作用的重要基础。 利用分析型电子显微镜对碎屑磷灰石的超显微结构的研究获得氟磷灰石的单晶电子图像。研究结果表明：氟磷灰石晶形完美，呈假六方粒状。单晶大小多为60纳米至160纳米。碎屑磷灰石是氟磷灰石晶体的集合体。集合体内部各晶体的结晶取向杂乱无章，是早期化学结晶形成的氟磷灰石晶体，后期在沉积盆地靠表面的物理吸附形成碎屑团粒，再在成岩过程中遭受挤压形变。 分析型电子显微镜的超显微结构研究得到无定形磷酸盐组分内部残留的生物胞内磷灰石质点的透射电子图像，显示胞内磷灰石质点呈浑圆粒状，大小仅为10纳米左右，代表成矿生物聚磷的最原始形式。 本文研究认为：织金新华磷矿是多种成矿因素综合作用的结果，不同类型的磷酸盐组分具有不同的成因过程： 1．组成碎屑磷灰石的氟磷灰石形成于化学结晶作用，可能与Rodinia超大陆裂解有关的洋底热水作用有关。热水作用为上升洋流提供了溶解态的磷和超微细粒氟磷灰石晶体。在矿区半封闭的沉积环境下，上升洋流携带来的超微细粒氟磷灰石单晶团聚成35微米至300微米的碎屑团粒，经沉淀和成岩期挤压固结形成磷灰石碎屑。 2．无定形磷酸盐组分的形成与生物成磷作用有明显的联系。本文发现，无定形磷酸盐组分主要由生物磷灰石和有机生物残留物组成。海水中磷化的微生物群落沉降到水体底层，实现海水中的溶解态磷向沉积物的迁移固定。在成岩作用早期发生了初步的磷的富集，无定形磷酸盐组分内部形成生物磷灰石集合体，最大约200纳米，最小40纳米，多数约100纳米。它是纳米生物磷灰石的多晶集合体，呈不规则粒状分布于残留干酪根内部；成岩期的磷酸盐化作用直接发生在无定形磷酸盐组分的内部，形成富磷酸盐的微细丝状、网状物，它们就是磷灰石团簇。磷灰石团簇由小于300纳米的不规则磷灰石团块组成，具有纳米微晶结构。成分上，常共生有少量的泥质、硅质和氢氧化铁。 3．生物屑磷灰石直接形成于生物成矿作用，是生物结构的磷酸盐化。 4．球粒状磷酸盐组分内核代表海底沉积的磷质淤泥，成分与微观结构均较为复杂多样，是成矿微生物的聚磷沉积作用和成岩作用早期磷酸盐化的产物，在固结之前经水动力作用抛到海水中成球粒；壳层是在内核处于悬浮状态下在海水中吸附热水化学结晶的（超）微细粒氟磷灰石晶体形成的，具有与碎屑磷灰石相同的成分和结构。 对于织金新华磷矿，化学结晶、物理吸附沉积形成的碎屑磷灰石是最稳定、最基本的成矿方式，但仅形成贫磷矿石。当有生物成磷作用叠加时，矿石才能得到进一步的富集。

湖南芙蓉锡多金属矿床成矿流体地球化学研究

锡的分布和成矿作用通常与花岗岩浆作用具有十分密切的联系。以往研究表明锡矿化与高度分异的S型花岗岩或陆壳改造型花岗岩具有密切的成因联系，但近年来随着大量与A型花岗岩有关的锡矿床的发现，人们开始关注A型花岗岩与锡成矿关系的研究。相对于与S型花岗岩有关的锡矿床来说，与A型花岗岩有关的锡矿床成成矿机理的研究积累少，研究程度相对较低。 湘南地区位于南岭多金属成矿带中部，是我国华南地区重要的有色金属成矿带。近年来在该成矿带上新发现的芙蓉超大型锡多金属矿床为世界瞩目，该矿床的形成与骑田岭花岗岩具有密切的时空关系。近年来研究显示骑田岭花岗岩具有A型花岗岩的特征。本文以芙蓉超大型锡多金属矿床和相关的骑田岭岩体为研究对象，在前人研究的基础上，运用岩石学、矿物学、流体包裹体、微量元素和稳定同位素地球化学等理论和方法，对芙蓉锡矿成矿流体的地球化学特征及其演化机制进行了系统的研究，并在此基础上探讨了骑田岭花岗岩体与芙蓉锡矿间的成因联系和芙蓉锡矿的成因机制。论文取得的主要认识包括以下几个方面： 1. 运用矿物学、岩石化学、微量元素地球化学以及同位素地球化学方法，进一步证实了骑田岭花岗岩体具有A型花岗岩的特征，总体具有偏铝质-弱过铝质、高硅富碱高钾的地球化学特征，早晚两期花岗岩具有同源岩浆演化特征，属于A2型花岗岩。同位素地球化学数据显示花岗岩体具有EMII型富集地幔的特征，形成于华南大陆地壳拉张减薄的构造环境，成岩过程中有地幔物质加入。 2. 通过对矿石矿物组构和成分的岩矿鉴定、扫描电镜和电子探针分析，确定了芙蓉锡多金属矿床原生夕卡岩形成于较氧化的环境，成岩作用主要与早期侵入的角闪石黑云母花岗岩密切相关，锡主要以Sn(IV)进入夕卡岩的造岩矿物晶体内。退蚀变夕卡岩、云英岩和蚀变花岗岩矿化为锡成矿主阶段，三种矿化类型的成矿流体具有相似的地球化学性质，即富Cl、Ti和Sn的特征，而锡石硫化物型矿石形成于成矿晚阶段。 3. 运用流体包裹体地球化学理论和方法以及激光拉曼分析技术，揭示了芙蓉锡矿的成矿流体组成、形成的物理化学条件和演化特征。芙蓉锡多金属矿田成矿流体为CO2-CH4-CaCl2- NaCl-KCl不混溶体系，成矿过程中发生流体不混溶作用。芙蓉锡矿成矿流体盐度为0~50.63 wt%NaCl eq.，密度为0.31~1.12g/cm3，主成矿阶段热液流体的均一温度主要集中在300-450℃，流体压力为179-1800bar，成矿晚阶段锡石硫化物型矿石中均一温度主要集中在150~300℃，流体压力为400-600bar。成矿流体特别是主成矿阶段的流体成矿过程中普遍发生了沸腾现象。从主成矿阶段到成矿晚阶段、矿化期后，热液流体盐度呈降低的趋势，流体成分也从含CO2、CH4的CaCl2-NaCl-KCl-H2O水溶液体系转化为不含CO2的简单NaCl-KCl-H2O水溶液体系。 4. 通过分析主要矿化类型矿石中脉石矿物的稀土元素和稳定同位素特征，揭示了成矿流体来源。研究表明芙蓉矿床成矿期热液脉石矿物的稀土元素地球化学和稳定同位素地球化学显示了与本区花岗岩具明显的相似性，骑田岭黑云母花岗岩形成过程中分异出的岩浆期后热液应是芙蓉矿床成矿流体的主要来源，成矿过程中有少量经过深循环的大气降水加入。 5. 在总结前人研究成果的基础上，综合上述研究，探讨了骑田岭花岗岩体与芙蓉锡矿间的成因联系和芙蓉锡矿的成因机制。本文认为骑田岭岩体中黑云母花岗岩与Sn成矿具有密切的成因联系，芙蓉锡矿田的成矿流体主要来源于黑云母花岗岩岩浆结晶期后分异出的富Cl和Sn的热液流体。芙蓉锡矿成矿流体中锡主要呈Sn(II)与氯离子形成亚锡氯络合物进行迁移，低温的大气降水与高温的岩浆热液流体混合，导致流体体系温度、盐度、压力的降低和富CO2相流体的分离（CO2去气作用），流体的氧逸度升高，使得Sn(II)与氯离子形成亚锡氯络合物解体，Sn(II)被氧化成SnO2并发生沉淀作用。这种流体的混合作用是导致锡石沉淀的最有效的机制。

香花岭锡多金属矿床同位素年代学及地球化学

华南地区中生代地壳拉张、岩石圈伸展减薄与大规模成岩成矿作用的时代分布格局和地球动力学背景一直是国内外关注的重要科学问题。富碱侵入岩及其有关的成矿作用是伸展构造的直接表现之一。近年来的研究发现，南岭中段花山－西山－香花岭－骑田岭NE向的花岗岩带为一中晚侏罗世形成的具有高εNd(t)和低Nd模式年龄的富碱侵入岩带，并伴有大规模的钨锡多金属成矿作用，是研究大规模地壳拉张、岩石圈伸展减薄与该区大规模的钨锡多金属成矿作用的耦合关系及其深部动力学机制的理想对象。本文以香花岭地区花岗岩及其有关的钨锡多金属矿床为研究对象，运用岩石学、元素地球化学、同位素地球化学等方法手段，对香花岭矿区花岗岩的成因和形成构造环境、成矿物质与成矿流体的来源、成矿年代学及成岩成矿的地球动力学背景等方面进行了系统研究，并初步建立了该矿的成矿模式。论文主要获得以下认识： （1）通过对香花岭矿区癞子岭和尖峰岭岩体的主、微量元素及Sr、Nd同位素研究，查明上述两个岩体均具有高硅、富碱及成矿元素，富LILE及Zr、Ga等部分高场强元素(HFSE)，贫Ca、Mg，P，Eu，较高的εNd及较低的Nd模式年龄等特征，具有相同的岩浆源区，属于后造山背景下形成的铝质A型花岗岩（A2型），具有壳、幔混合来源。 （2）利用白云母Ar-Ar同位素定年手段对香花岭锡多金属矿床、香花铺钨多金属矿床及尖峰岭云英岩型锡多金属矿床进行了成矿年代学研究，并首次对该矿的矿石矿物－锡石进行了U-Pb同位素定年。结果表明，香花岭地区钨锡多金属矿床的成矿时限为154-161 Ma，与矿区花岗岩黑云母K-Ar年龄相一致，并与区域主要钨锡矿床的形成时间一致。 （3）微量元素、稀土元素及同位素地球化学的研究表明，香花岭锡多金属矿床与矿区花岗岩具有密切的成因联系，矿区花岗岩不仅为该区成矿作用提供热动力和介质条件，而且为成矿作用提供了主要的物源。此外，矿区内的赋矿地层可能提供了部分成矿物质。早期成矿流体以岩浆水为主，晚期有大量大气降水的加入。 （4）对香花岭锡多金属矿床锡的超常富集机制作了初步探讨，认为该区锡的超常富集可能归功于如下几个因素：首先，富含F等挥发分的花岗岩浆高度分异演化出富含挥发分及成矿元素的超临界流体，成矿流体在流经赋矿地层时萃取了其中的部分成矿元素；其次，伴随着围压的不断降低，成矿流体发生了沸腾及连续的去气作用，导致了成矿流体的高度浓缩，当流体达到饱和或过饱和时，成矿元素沉淀成矿；最后，早期形成的矿床进一步受到后期的叠加改造，从而形成该区高品位的锡矿石。 （5）根据上述研究，香花岭锡多金属矿床与矿区花岗岩具有密切的时间、空间及成因联系，二者应为同一构造背景下形成的产物。结合区域上的研究，香花岭矿区的成岩成矿作用与南岭中段同时代的其他钨锡多金属矿床具有相同的地球动力学背景。这种构造背景可能与该区中－晚侏罗世构造体制转换，地壳拉张－岩石圈伸展减薄背景下，软流圈地幔上涌及发生壳、幔相互作用密切相关。 （6）初步建立了香花岭锡多金属矿床的成因模式：在该区中晚侏罗世大规模地壳拉张、岩石圈伸展减薄背景下，地幔物质上涌到中下地壳，发生壳幔相互作用，形成壳幔混合的花岗岩浆。花岗岩浆经充分分异演化，形成富含挥发分和成矿元素的一种具超临界性质的成矿流体。成矿流体在上升过程中随着围压的不断降低，发生了连续的去气作用，使得成矿流体高度浓缩并沿有利的构造部位成矿，并在后期受到改造、叠加等成矿作用，以至于形成了该区最富的锡矿床。