SHRIMP U-Pb Zircon Geochronology of the Xiaotongguanshan and Shatanjiao Intrusions and Its Petrological Implications in the Tongling Area, Anhui

This paper determines the crystallization ages of the Xiaotongguanshan quartz monzodiorite and Shatanjiao quartz monzonitc porphyry from the Tongling area using the SHRIMP zircon U-Pb method. The crystallization age of the former is 142.8±1.8 Ma; that of the latter is 151.8±2.6 Ma. These data indicate that they were formed during the Late Jurassic （142.8 to 151.8 Ma）. Zoned magma chamber was formed because of double diffusive convection. Therefore, the intrusive sequence of magma is generally from quartz monzonite through quartz monzodiorite to pyroxene monzodiorite, i.e. an inverted sequence.

Lead Isotope Studies of Massive Surphur-Iron-Gold Deposits in the Tongling Area, Anhui Province

Pb isotope ratios and their variation have been measured and explained on ores of massive S-Fe-Au depos-its hosted in the Middle-Upper Carboniferous, on feldspars from diorite bodies closely related tomineralization and on whole rocks from ore-hosting strata (carbonate rocks) in the Tongling area, Anhui Prov-ince. Through a comparison of Pb isotope features of these geological bodies, it has been suggested that oresubstances of the deposits were derived from ore-hosting strata. In the meanwhile, the measurement of ore Pbisotopes of different mineralization types of the same deposit indicates that different mineralization types havedistinct Pb isotope characteristics, showing the potentiality of the Pb isotopic method used in mineral explora-tion.

Discovery of the World's Second Largest Molybdenum Deposit in the Shapinggou Area,Jinzhai County,Anhui Province

In the year of 2011, a superlarge molybdenum deposit was discovered in the Shapinggou area, Jinzhai county, Anhui Province by the Bureau of Geology and Mineral Exploration of Anhui Province, with its reserve more than 2.2 million ton, just next to the Klimax molybdenum deposit （〉3.3 million ton） in Colorado. It has ranged the world＇s second largest molybdenum deposit, with potential economic value up to 100 billion dollars.

Study on the Sustainable Development of the Tobacco-growing Area in South Anhui

Based on the actual situation of tobacco production in South Anhui tobacco-growing area,the paper analyzes several major constraints,and discusses several aspects such as tobacco production human resources,production of large-scale cultivation,science and technology service providers,the standardized production management and production security system. The countermeasures and suggestions for sustainable development are also put forward to provide a reference for the sustainable development of tobacco-growing area in South Anhui.

Child Mortality Patterns in Rural Areas of Anhui and Henan Provinces in China, 1990

County-based IMR and U5MR in Anhui and Henan provinces in China were estimated and analyzed by using the 1990 Census Data. Census was conducted on July 1,1990, the number of deaths only occurred in the first half year of 1990 was collected. In order to obtain the total population and total number of deaths in the same year, the total number of deaths in each eqersex group for the whole 1990 was then estimated by taking the death number in the first half of 1990 as the base and multiplying a coefficient, which varied in different age-sex-region groups. Two major adjustments for some possible underreporting cases in female birth and infant death were made. If the sex ratio at age 0 in some counties was beyond 1. 2, then it was taken as 1. 15 for rural counties and 1.10 for urban cities, which were the estimates of sex ratios for the children at ape 5 in the national 1% Population Sampling Survey in 1995. The adjustment for IMR were made by comparing the segment of the county lift table from age 15 through 59 with that from the same age groups in the international and Chinese Model Life Tables. The IMR in the county life table would be substituted by the one in the closest Model Life Talbe, if it was less than in the latter.The findings of the analysis may be summarized as fol1ows: (i) Total county-based IMR and U5MR were 33. 4 Per 1000 and 41. 4 per 1000 respectively, with great variations between urban cities (25. 4 per 1000 for IMR and 31. 4 per 1 000 for U5MR) and rural counties (35. 1 Per 1000 for IMR and 43. 6 per 1000 for U5MR). There were also sighficant differences in child mortality between nationally identified Poor counties and other counties in rural areas. In the opr counties the total IMR was 40. 7 per 1 000 living births in average while in non-opr counties it was only 33. 2 per 1000 in average (P < 0.05). The U5MR in opr counties was 25 percent higher than in non-opr counties (51. 5 vs 40. 9 Per 1 000 living births).(ii) Statistically significant correlation between child mortality and socio-economic variables was revealed from the data set, among which gross social economic products per capita was found to have the strongest relationship with child mortality. The neqative correlation was found between child mortality and a set of socalled' rich' variables including the gross social products, gr-oss agricultural products, gna industrial products and the proportions of high-educated population at county level, whereas the poSitive correlation was found between child mortality and a set of'poor' variables, such as proportions Of residents with lower 1evel of education and illiteracy rate.(iii) thfferences in child mortality between these two provinces were found, which were identical to the trends of differences in socio-economic indicators between them.tower child mortality proved to be associated with better socio-economic conditions(higher per capita products, higher proPortions of residents with higher level of education, lower proportion of less educated people and illiteracy) in province Henan.

Anhui Fuyang Economic and Technological Development Area

The Fuyang Economic and TechnologicalDevelopment area(FETDA) is aprovincial development area approvedby the Anhui provincial government.Situatedin the south of the city,the area is close to theold town in the north and bordering to thesouth the outer ring road,and the Beijing-Kowloon railway in the east.To the southeastis the large freight terminal of the railway.And the Xiqinghe River runs along its westernborder.It is four km away from Fuyangairport and national highway 105 and theFuyang-Yingzhou highway run through thearea,which covers a total area of eight sqkm. With all kinds of public facilities,thearea will be operated in line with

THE RESEARCH INSTITUTES AFFILIATED TO THE CAS IN HEFE1 AREA, ANHUI PROVINCE

The Hefei Branch of the CAS is an R&D base specializing in basic research and applied developmentof technological physics, established by the CAS in the area of Hefei City,capital of Anhui Province.It is situated beside the Dongpu Reservoir in the western suourb of the City’s downtown area,covering 186.7 hectares in total area. At present, the Branch consists of five subordinate unit.i.e.the Branch organ, the Anhui Institute of Optics & Fine Mechanics, the Institute of Plasma Physics, the Institute of Solid-state Physics and the Institule of Intel-

Discussion on Deep Tectonic Background of Moderately Strong Earthquake in Anhui Province and Its Neighboring Areas Using Results of Seismic Tomography

Using the latest results of seismic tomography, we studied the deep tectonic settings of the moderate and strong earthquakes in Anhui Province and its neighboring areas (28°～39°N, 112°～124°E). The results are as follows: (1) There exists a certain correlation between the location of moderate-strong earthquake, the geologic structure of the surface and the partitioning of active tectonic elements with the upper-crust velocity structure. Most earthquakes recording M≥6.0 occur in high-velocity zones or in the transitional areas between high-velocity and low-velocity zones in the upper crust. Seismicity in the low-velocity zone has a lesser impact. Earthquakes occuring in the high-velocity zone are distributed mainly in the velocity variation area. The boundary belts and the interior of the North China plain fault block are the main active sites of moderate-strong earthquakes. Beneath the fault basins in the western and northern sides of the block, the upper crust is characterized by a wide discontinuous distribution in the low-velocity zone, and in the transition zone from the low- to high velocities, the moderate strong seismicity shows a zonal distribution where active faults are developed. The NW-extension Zhoukou-Hefei-Xuancheng low-velocity zone separates the high-velocity zones of Dabieshan Mountains and west Shandong-Anhui, and moderate-strong earthquakes on its northern side bordering the high-velocity zones are relatively frequent. This low-velocity zone is probably an important and deeply structured boundary between the North China and the South China tectonic provinces. (2) The frequent moderate-strong earthquake recorded in the past and the recent small earthquake activities in the Huoshan-Lu’an area are the result of a low-velocity zone in the middle crust beneath the central part of Dabieshan and the two sets of deep faults that cut through the crust.(3) In terms of deep structures, the distribution of moderate-strong earthquake in Anhui Province has an obvious regional feature. Based on historical earthquake recurrence intervals and analogue principles of deep seismogenic tectonics, the potential earthquake risk zones recording M_S5.0 in Anhui Province are determined.

Geochemical Characteristics of Sedimentary Manganese Deposit of Guichi, Anhui Province, China

The sedimentary manganese deposits occurring in Gufeng formation of the Permian in Guichi area, south Anhui Province, include manganese carbonate deposit formed by sedimentation, and manganese oxide deposit made by later oxidation. The total REE contents of these samples are relatively low （ 〈 250 × 10^- 6）, belonging to LREE-enriched type, showing LREE enrichment during the process of formation of Mn deposit, especially during Mn-oxidizing process. Three normalized REE patterns and SCNA-normalized trace elements spider diagrams of the Mn-bearing sequence rocks and ores in this area reflect their same origin of ore sources, which is similar to rock-forming and ore-forming conditions. The Mnforming materials primarily came from the continent with higher mature degree and single material source. The δEu and δCe negative anomaly and Ce anomaly （ 〈 - 0.1） manifest that Mn-bearing sequence of the Permian was mostly formed in marine basin and oxidative environment. The Sr and Ba anomaly, Sr/Ba and Co/Ni values reflect the Mn deposit environment was of deep water and high-salinity of marine facies. Although the Ce/La （mean 1.05）, Y/Ho （25 - 41.5） and trace metals show a variety of correlations with Mn in the ten rock samples, which show multiple sources for the manganese, the analysis of geochemical characteristics indicate that the material sources of Mn deposit have been primarily terrestriallyderived. Another source of the manganese probably comes from the seafloor volcanism in this area. Analysis of sedimentary features and geohistoric evolvement reveals that the maximum transgression of the Qixia Period, ore district is then in deep shelf-basin sedimentary setting and the Mn-bearing sequence is deposited.

煤层底板含水层区域注浆改造浆液扩散范围现场示踪试验

近年来,为解放底板高承压灰岩水上煤炭资源,华北煤田普遍采用地面定向钻技术,对太原组薄层灰岩进行区域性注浆加固改造(习称“底板区域治理”),以全面封堵灰岩岩溶裂隙并阻断垂向导水通道。该技术中,与浆液扩散范围(半径)密切相关的“水平分支孔”孔间距设计问题,一直备受学界和业界的广泛关注。皖北矿区底板区域注浆工程量大,特别是深部资源开采,将有数十亿元的注浆工程,有必要查清浆液扩散范围真实数据。为此,以皖北矿区恒源煤矿为研究基地,依托Ⅱ63采区底板区域治理工程,设计并实施浆液扩散范围示踪试验,在中间的水平分支孔(Z8-7)投放荧光剂(示踪剂),在两侧的水平分支孔(Z8-6、Z8-8)以及交叉分支检测孔(Z8JC)取岩屑样鉴别荧光水泥,以获得浆液扩散范围,进而在浆液扩散影响因素分析基础上,构建恒源煤矿底板区域注浆治理浆液扩散范围计算公式。结果表明:①综合岩屑现场及室内鉴别结果分析,获得恒源煤矿Ⅱ63采区底板区域注浆浆液扩散范围为38.3~44.0 m,且水泥分布密集区在水平分支孔浆液扩散范围30 m以内,该区域内注浆效果最佳。②通过现场岩屑快速鉴别与室内岩屑精准鉴别,取得的浆液扩散范围基本一致,证明了荧光示踪浆液扩散范围的有效性。③通过对比分析,认为在计算参数、边界约束等符合实际注浆工况条件下,浆液扩散范围理论计算和数值模拟结果,与现场示踪试验实测结果较为接近。④利用示踪试验过程中的压水试验及注浆参数、钻遇构造及水文地质响应等数据,考虑重力、构造、地下水径流等因素影响,借助SPSS非线性拟合软件,得到恒源煤矿Ⅱ63采区底板区域注浆浆液扩散范围计算公式。⑤基于恒源煤矿受注层实际地质、水文地质条件,利用拟合的浆液扩散范围计算公式得出Ⅱ63采区Z8场地浆液扩散范围为37.8~42.9 m,与浆液扩散范围示踪试验实测结果相近,计算公式可在类似条件下推广应用。本次煤矿底板区域注浆浆液扩散范围现场示踪工程试验,不仅取得了浆液扩散范围的真实数据,而且阐明了浆液扩散与多种地质、水文地质因素之间的内在联系,揭示了超深、超长定向钻注浆浆液扩散机理,构建了浆液扩散范围计算公式,为类似条件下底板区域治理工程水平分支孔孔间距的合理设计提供了参考依据。

安徽枞阳县黄龙桥地区隐爆角砾岩筒特征及其与铀成矿关系

安徽枞阳黄龙桥地区隐爆角砾岩筒地处庐枞盆地黄梅尖A型花岗岩体内,是岩体内发育的规模最大、最为典型的隐爆角砾岩筒。文章在详细的野外地质调查、物化探测量和钻孔岩心地质编录的基础上,通过显微岩石学、元素地球化学特征研究,分析其地质特征并探讨其与铀成矿的关系。分析研究表明:隐爆角砾岩具有角砾成分杂、隐爆作用强度大、“隐爆源”埋藏深特点,其自身并不含有铀矿化现象,铀元素平均含量远远低于石英正长岩;ΣREE为293.16×10^(-6)~453.45×10^(-6),LREE/HREE为6.71~11.00,δCe为0.89~1.02,δEu为0.46~0.57,呈现较明显的负Eu异常,稀土元素配分模式呈右倾斜型,具有轻稀土分馏明显,重稀土分馏不明显的特点;隐爆角砾岩内部发育的大量赤铁矿形成于岩浆“隐爆”作用之前,铀成矿作用发生在隐爆角砾岩筒形成之后,推测隐爆角砾岩爆发时间在124~115 Ma;隐爆角砾岩筒主要为铀成矿提供了重要的导矿通道,外围具有较好的铀矿找矿潜力,而其深部具有寻找铁矿的潜力。

皖南国际文化旅游示范区A级景区空间分布及影响因素

为落实党的二十大报告中区域协调发展的新要求,顺应全域旅游与文旅深度融合新趋势,开展皖南国际文化旅游示范区旅游资源格局的研究,能够为示范区后续开发建设提供思路与导向。借助平均最近邻指数、不平衡指数、核密度、地理探测器等方法,解析示范区内A级景区的空间特征及影响因素。结果表明:示范区A级景区整体分布不均衡,呈现集中分布特征;示范区内A级景区显现“两主、四次”的空间格局,呈现Y字形分布态势;遗产点密度因子驱动力最强,经济发展因素对A级景区空间分布影响程度较大,自然环境因素驱动力较弱;局部自相关分析表明多数因子聚类特征表现明显;交互探测结果表明两种因子共同作用强于单因子作用。

文旅融合视域下皖南国际文化旅游示范区建设路径研究

党的二十大报告中提出要坚持以文塑旅、以旅彰文,推进文化和旅游深度融合发展。国家全域旅游示范区创建工作正持续开展,文旅融合在旅游示范区建设工作中起着至关重要的作用。梳理皖南国际文化旅游示范区建设现状,厘清示范区现有资源优势,分析其所面临的文化传承不力、创新能力欠缺、产业延伸不足、制度框架不全等问题,从保护传承文化资源、凸显文化特色内涵、加快全域旅游发展和提高旅游服务质量4个方面针对性地提出示范区具体建设路径,以期稳步推进示范区建设,助其融入长三角旅游高质量发展,并为文旅融合视域下同类型旅游区建设发展提供参考和指引。

论杨靖宇河南革命斗争的历史贡献

抗日民族英雄杨靖宇在青年时期就通过组织领导震惊中外的确山暴动、建立确山县临时治安委员会,有力支援了北伐战争,点燃了大革命时期河南革命斗争之火,揭开了鄂豫皖革命的序幕,开启了我党武装夺取政权的历史进程,在全国乃至国际上都产生了广泛影响。在此过程中,杨靖宇践行和丰富了我党关于党的领导、武装斗争和统一战线理论,为党培养了一大批优秀干部。从杨靖宇的革命生涯来说,河南和东北的革命活动是不可分割的整体,河南和东北的革命经历都是杨靖宇精神的有机组成部分,杨靖宇在河南的革命斗争也是鄂豫皖苏区历史的重要内容。

新时代皖北乡村生态振兴的现实困境与路径优化

生态振兴作为乡村振兴的应有之义,不仅对巩固脱贫攻坚成果和守住不发生规模性返贫底线起着重要支撑作用,更是助推乡村高质量发展的关键一环。皖北地区乡村生态振兴前期在人居环境、空间治理、生态保护等方面已取得一系列成效,但受制于脆弱的自然生态和薄弱的地区经济,导致内生动力不足,现阶段在主体参与、生产方式、生态产品、生态文化、治理效能等方面遇到现实困境。为加快构建皖北人与自然和谐共生的现代化,需从政民协同、绿色转型、产业融合、文化赋能、治理有效等维度多措并举探索皖北乡村生态振兴的实践路径。

皖南山区不同类型森林土壤阳离子交换性能差异

为了解皖南山区不同类型森林土壤阳离子交换性能差异,为该区合理营林提供参考,选取皖南山区6种不同类型森林土壤(杉木林、马尾松林、栓皮栎林、外松林、天然阔叶林和杉木-栓皮栎混交林)为研究对象,比较森林土壤阳离子交换性能的差异。结果表明:(1)研究区土壤呈强酸性,土壤有机质含量为33.84~91.50 g·kg^(-1),总氮含量为0.94~3.37 g·kg^(-1),碱解氮含量为131.58~203.62 mg·kg^(-1),总磷含量为0.22~0.77 g·kg^(-1),有效磷含量为0.17~0.32 mg·kg^(-1);土壤主要缺乏速效磷养分。(2)阳离子交换量在8.09~12.57 cmol·kg^(-1)之间,排序为:天然阔叶林>外松林>马尾松林>混交林>杉木林>栓皮栎林,不同森林土壤间阳离子交换量的差异主要由其土壤有机质的差异引起。(3)交换性盐基总量在1.74~2.72 cmol·kg^(-1)g之间,排序为:马尾松林>外松林>杉木林>栓皮栎林>混交林>天然阔叶林,Ca^(2+)和Mg^(2+)是主要的盐基离子,是成土过程中Ca、Mg优先固持形成的。(4)盐基饱和度在13.97%~28.98%之间,排序为:马尾松林>杉木林>栓皮栎林>外松林>混交林>天然阔叶林,该差异是由淋溶作用和树木对盐基离子的吸收共同作用形成的差异。综上,研究区土壤保肥和缓冲性能较低且供肥能力较差,尤其是土壤速效磷供应能力差。其中松林的供肥保肥能力及缓冲性能明显优于其他树种森林,混交林的速效养分含量更高,故可通过营造松类混交林以及施肥来提高森林土壤供肥保肥能力和缓冲性能。

Basic Features of the Crustal Structure in the Lower Yangtze and Its Neighboring Area in the Chinese Mainland： Review of Deep Seismic Sounding Research

The Deep Seismic Sounding( DSS) projects carried out from the 1970 s in the lower Yangtze region and its neighboring area were reviewed in this paper,then the basic wave group features of those wide angle reflection / refraction record sections,and of the crustal structure are summarized. It shows that there were in total five clear wave groups on the record sections,which include the first arrival Pg,the reflection P1 from the bottom interface of the upper crust,the reflection P3 from the bottom interface of the middle crust,the strong reflection Pm from the Moho boundary,and the refraction Pn from uppermost mantle. In general,these phases are easily consistently traced and compared,despite some first arrivals being delayed or arriving earlier than normal due to the shallow sedimentary cover or bedrocks. In particular,in the Dabie Mountain region the seismic events of a few gathered shots always have weak reflection energy,are twisted,or exhibit disorganized waveforms, which could be attributed to the disruption variations of reflection depth,the broken Moho,and the discontinuity of the reflection boundary within crust. The regional crustal structures are composed of the upper,middle and lower crust,of which the middle and lower layers can be divided into two weak reflection ones. The crustal thickness of the North China and Yangtze platform are 30km- 36 km,and the Moho exhibits a flat geometry despite some local uplifts. The average pressure velocity in lower crust beneath this two tectonic area is 6. 7 ± 0. 3km / s. Nevertheless,beneath the Dabieshan area the crustal thickness is 32km- 41 km,the Moho bends down sharply andtakes an abrupt 4km- 7km dislocation in the vertical direction. The average pressure velocity in the lower crust beneath the Dabieshan area is 6. 8 ± 0. 2km / s.

皖南山区洞栖性蝙蝠的本底资源现状调查

2022年6—8月,基于竖琴网、雾网、抄网等工具,对安徽省皖南山区洞栖型翼手目(Chiroptera)多样性进行了调查。调查中共发现翼手目动物4科4属17种,其中,菊头蝠科(Rhinolophidae)1属8种,占比47.05%;蹄蝠科(Hipposideridae)1属2种,占比11.76%;蝙蝠科(Vespertilionidae)1属6种占比35.29%;长翼蝠科(Miniopteridae)1属1种,占比5.88%。从动物区系来看,东洋型共有12种,占比70.59%,南中国型(1种)和季风型(4种)较少。结果显示皖南山区在安徽省洞栖蝙蝠物种丰富度方面,具有较高的多样性水平。此外,在调查的基础上,对皖南山区洞穴型蝙蝠的濒危等级、保护现状、区系特点进行了概述。本次调查能够为安徽省后期开展的翼手目动物资源调查与监测工作提供科学依据。

安徽省宣城地区龙潭组页岩孔隙发育特征及其影响因素

安徽省宣城地区上二叠统龙潭组页岩气资源潜力大,已有钻井揭示其页岩含气性差异大,页岩气赋存富集机理复杂。通过总有机碳含量分析、岩石热解实验、X衍射、低温液氮吸附、二氧化碳吸附和场发射扫描电镜观测等手段,研究宣城地区龙潭组页岩中孔隙的大小、结构及类型,探讨影响其孔隙发育的主要因素。研究表明:(1)宣城地区龙潭组页岩中孔隙主要为半开放型,并且存在一定量的细颈瓶孔。其中,矿物孔较发育,主要为微米孔,孔隙数量多;有机孔发育数量较少,孔径为纳米级—微米级。(2)龙潭组页岩BET比表面积为4.2601~10.3068 m^(2)/g,平均为7.4290 m^(2)/g。介孔+宏孔体积为0.0049~0.0179 cm^(3)/g,平均为0.0089 cm^(3)/g;微孔体积为0.0019~0.0038 cm^(3)/g,平均为0.0026 cm^(3)/g。孔径大于10 nm的孔隙是页岩孔隙体积的主要贡献者。(3)高演化、矿物含量差异大等使得宣城地区龙潭组页岩孔隙发育规律性变得复杂,TOC含量和矿物含量明显影响着宣城地区龙潭组页岩孔隙体积,但与孔隙比表面积没有明显线性相关性。在宣城地区龙潭组页岩气后续勘探开发中,应注重较高TOC含量、较高碳酸盐矿物含量和较低黏土矿物含量的页岩。

安徽抗日民主根据地党风廉政建设的实践及启示

安徽抗日民主根据地在党风廉政建设实践中通过加强思想教育,筑牢思想防线;健全完善财经制度和强化制度保障;加强监督,构建长效机制;厉行节约,精兵简政,奠定廉洁政治的物质基础;从严治吏,狠抓“关键少数”等有效措施取得了长效的实践效果,为新时代党风廉政建设提供了重要的启示。新的历史条件下要提高思想认识,以更加积极的历史主动精神将党风廉政建设向纵深推进;勇于自我革命,夯实党风建设的主体力量;深化标本兼治,一体推进“不敢腐、不能腐、不想腐”的长效机制,汲取党建工作的历史能量,永葆党的生机活力。