Palynomorphs from Metamorphic Rocks in Southern Anhui and Their Geological Significance

The southern Anhui metamorphic terrane is traditionally regarded as a part of middle-lateProterozoic "Jiangnan Old Land". Based on the occurrence of palynomorphsAsperatopsophosphaera sp., Trachysphaeridium sp. and Nucellosphaeridium sp. (late

Geochemistry and geochronology of Late Jurassic and Early Cretaceous intrusions related to some Au(Sb) deposits in southern Anhui: a case study and review

Some Au deposits in southern Anhui Province have recently been found to be closely associated with Late Mesozoic intrusions. Typical examples include the Huashan Au(Sb) deposit and Au deposits at Zhaojialing, Wuxi,and Liaojia. In order to understand the mechanisms that led the formation of these Au deposits, we make detailed reviews on the geological characteristics of these Au deposits. Specifically, we present new LA-ICP-MS zircon U–Pb dating, along with elemental and Hf isotopic data from the Huashan Au(Sb) deposit. Our data suggests that the Huashan ore-related intrusions were emplaced during the Late Jurassic and Early Cretaceous periods(144–148 Ma). They are characterized by arc-magma features and high oxygen fugacity and are rich in inherited zircons. Zircon U–Pb ages and Lu–Hf isotopes from intrusions suggest that Proterozoic juvenile lithosphere is the main source of these intrusions. The regional geological history implies that lithosphere beneath southern Anhui was produced during a Proterozoic subduction and was fertilized with Au(Cu) in the process. Integrated with theresults of previous studies, we inferred that Late Mesozoic intrusions formed by the remelting of the lithosphere could provide the metal endowment for the Au-rich deposits in southern Anhui.

Preservation and Inheritance of Huagu Opera in Southern Anhui -- An Intangible Cultural Heritage

As a traditional local opera,Huagu Opera in southern Anhui have faced a threat of dying out as a result of the change of social and ecological environment in the rural areas of China as well as the impact of multiple entertainment since the reform and openingup.Based on the analysis of its current situation,this paper proposes ways to preserve and inherit Huagu Opera by combining traditional means with digital collection technology.

Ancient Relics in Southern Anhui Province

ACROSS urban and rural areas in the south of Anhui Province are illustrious cultural relics and other ancient treasures left by wealthy "huishang" (Anhui merchants) from the Tang to the Qing Dynasties and ancient celebrities. Among these relics, memorial archways, ancestral temples and civil residences are the most extraordinary ones and honored the "three glories of Anhui" in traditional Chinese architecture.

A comparison study of tungsten-bearing granite and related mineralization in the northern Jiangxi-southern Anhui provinces and southern Jiangxi Province in South China

The southern Jiangxi Province(SJP) and northern Jiangxi-southern Anhui provinces(NJSAP) are the two most important tungsten metallogenic districts in South China. The SJP district is a well-known tungsten producer in South China where distributes several ore concentrated areas such as the "Chongyi-Dayu-Shangyou", "Yudu" and "Longnan-Quanan-Dingnan"areas, with many large and super large tungsten deposits including the famous Xihuashan, Piaotang, Pangushan and Dajishan deposits. In recent years, major prospecting breakthrough for W-polymetallic resources has been made in the NJSAP district.Several large and super large W-Cu(Mo) deposits, such as the Dahutang, Zhuxi, Dongyuan and Baizhangyan deposits, are discovered. These deposits are all genetically associated with the Yanshanian(Mesozoic) granitic magmatism. In this study, a systematic comparison of the temporal and spatial distribution, petrology, geochronology, and geochemical characteristics of the tungsten-bearing granites between the SJP and NJSAP districts has been made, with an aim to improving the understanding of the petrogenesis of the granites and associated metal enrichment mechanisms in the two tungsten ore districts in South China. The following conclusions can be drawn:(1) The ages of the tungsten-bearing granites and associated mineralization are different in the two districts, in the SJP district the ages are mainly concentrated in 165–150 Ma, whereas in the NJSAP district it displays two age periods, one is 150–140 Ma(Late Jurassic-Early Cretaceous), and the other is 135–120 Ma(Early Cretaceous).(2) The tungsten-bearing granites from both the NJSAP and SJP districts are highly fractionated granitic rocks, but the SJP granites have experienced higher degree of fractional crystallization and more extensive fluid metasomatism than the NJSAP granites.(3) The petrogeneses of the tungsten-bearing granites from the two districts are different, those from the NJSAP district originated from partial melting of less mature sandstone-mudstone intercalated with meta-volcanic rocks of the Neoproterozoic Shuangqiaoshan Group which are both W and Cu enriched, in contrast those from the SJP district were likely derived from the highly mature,clay-rich mudstones of the Mesoproterozoic age which are only W enriched. In summary, the different source rocks with different metal enrichment features and different magmatic evolution and fractional degrees for the granites in the two districts might be the key factors that controlled the different matallogenic characteristics of tungsten ore deposits in the two districts in South China.

PROVENANCES OF LOW GRADE METAMORPHIC AND SEDIMENTARY ROCKS FROM SOUTHERN ANHUI PROVINCE: EVIDENCE OF Nd ISOTOPE COMPOSITIONS

Nd isotope model ages of clastic sedimentary rocks are useful for tracing provenances of sediments and reconstructing evolutionary history of sedimentary basins as well as estimating the average age of the continental crust. In this report we present the Nd isotope ratios and model ages determined for the low grade metamorphic and sedimentary rocks from southern Anhui.

Sponge fossil assemblage from the Early Cambrian Hetang Formation in southern Anhui

Abundant well-preserved large articulated sponge fossils and isolated spicules have been reported from the Early Cambrian Hetang Formation, southern Anhui Province. This unique epifaunal fossil assemblage dominated by articulated sponge fossils is called the Xidi Sponge Fauna. The sponge fauna lived in a quiet oxygenic environment be- low the storm wave base. Bloom of phytoplankton and rapid sedimentation rate resulted in the deposition of the black shales. Sufficient food supply, lack of other competitors, abundant ecological niches, and demand for oxygen during early Cambrian were in favor of the diversification and evo- lution of large sponges in the Early Cambrian.

Discovery and significance of Xucun late Proterozoic composite dike swarm in southern Anhui Province

GEOLOGICALLY, southern Anhui Province, East China, is a part of late Proterozoic collision orogens of the southeast margin of the Yangtze Block. In this region the development of late Proterozoic Fuchuan ophiolite suite and collision granitoids of Xiuning, Xucun and Shexian mark the existence of the intensely tectonic-magmatic events. Recently discovered Xucun

THEiEARLY JINNING JUVENILE CONTINENTAL CRUST TRANSFORMATION TYPE GRANITOIDS FROM SOUTHERN ANHUI PROVINCE, CHINA

It is considered that the early Jinning period granitoids from southern Anhui Province belong to the continental crust transformation (S) type and have their own characteristics which are different from those for general continental crust transformation type granitoids. They were formed at the early stage of the late Proterozoic era when that region was at an island-arc stage of the continental margin environment. By that time the continental crust was just formed and had a nature of juvenile crust. It is this juvenile crust that determined a series of characteristics of that type granitoids and made them a relatively independent rock type. They are the products formed by the continental crust in a certain stage of development.

安徽南部地区奥陶纪海相红层的分布及时代

在充分收集前人奥陶系地层学、古生物学和沉积学等资料的基础上,对安徽南部地区奥陶系进行了系统梳理,开展皖东地1井和贵池冯村剖面奥陶纪海相红层系统研究,为地层对比、古气候和古地理恢复提供重要的科学依据。研究表明:奥陶纪海相红层主要分布于紫台组、牯牛潭组、大田坝组、宝塔组、汤头组和胡乐组,时代为早奥陶世弗洛晚期至晚奥陶世凯迪中期;主要岩石类型为碳酸盐岩(瘤状泥质灰岩、网纹状灰岩、含生物碎屑灰岩和泥微晶灰岩等),少量碎屑岩(泥岩、含粉砂质泥岩、含粉砂质页岩);大多数属半深水海相红层,局部为浅水和深水海相红层;自北西向南东呈现一层式→二层式→三层式→二层式→一层式→零层式的横向变化,出现时代凯迪期→达瑞威尔期→弗洛期的纵向变化,海相红层的分布与沉积环境、古水温和不同地区构造性质密切相关;研究区海相红层不仅具有区域性(与湖北宜昌奥陶系具有对比性),而且具有全球性(中国主要块体),在地层划分与对比上具有重要的研究价值。

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。

造型艺术理念下皮影文创产品设计与开发——以皖南皮影为例

基于造型艺术理念,对855位皮影参观者进行问卷调查,分析皮影文创产品的市场需求。调查得知,皖南皮影文创产品需对皮影人物进行卡通设计,使文创产品更具趣味性,吸引更多年轻受众。互动观赏灯具设计使观者能够利用多种感官感受皖南皮影文化,达到宣传皖南皮影文化的目的,并带来一定的经济效益。

“皖南高原”的发现及其演化史初探-来自皖南及其邻区燕山期两期花岗岩的证据

为了探讨中国东部高原南部边界,收集整理皖南及邻区燕山期花岗岩的资料,并综合分析。结果显示,皖南燕山期花岗岩大致以132 Ma为界分为早(150~132 Ma)、晚(132~120 Ma)2期:早期的花岗岩主要是花岗闪长岩、二长花岗岩和少量二云母花岗岩,大多具有埃达克岩的特征;晚期花岗岩主要是富钾质的花岗岩,属于A型花岗岩。指示中国东部高原的南界不在长江中下游一线,而应当延伸到皖南及邻区。“皖南高原”大约形成于150~132 Ma期间,在132 Ma左右发生了垮塌,高原的界线向北退缩到长江中下游一线。中国东部高原整体垮塌在125 Ma左右,但是还残留有一些加厚的地区,主要分布在高原东侧的辽东、胶东、苏北、宁镇一带。

皖南地区8199例婴幼儿TORCH感染血清学检测结果分析

目的探讨皖南地区近年来TORCH病原体,即弓形虫(Toxoplasma gondii,TOX)、风疹病毒(rubella virus,RV)、巨细胞病毒(cytomegalovirus,CMV)和单纯疱疹病毒(herpes simplex virus,HSV)在婴幼儿人群的感染状况及流行特点,为儿童相关疾病的预防、诊断和治疗提供参考。方法回顾性分析2016年4月—2023年3月皖南医学院第一附属医院接诊的0~3岁婴幼儿TORCH感染血清IgM和IgG抗体检测结果,并对不同年龄、年份的TORCH阳性率进行比较分析。结果共有8199例0~3岁婴幼儿进行TORCH感染血清学筛查检测,其中男性4631例,女性3568例。婴幼儿TOX、RV、CMV、HSVⅠ和HSVⅡ的IgM抗体阳性率分别为0.11%、0.20%、0.89%、0和0,差异有统计学意义(χ^(2)=100.000,P<0.05);相对应的IgG抗体阳性率分别为10.81%、78.36%、98.32%、82.38%和13.45%,差异有统计学意义(χ^(2)=22828.211,P<0.05)。不同年龄组比较,婴儿组CMV-IgM阳性率(11.90%)高于新生儿组(0.20%)和幼儿组(1.40%),差异均有统计学意义(χ^(2)=672.920、20.569,P均<0.017);新生儿组TOX-IgG、RV-IgG、CMV-IgG、HSVⅠ-IgG和HSVⅡ-IgG阳性率(11.01%、79.88%、98.76%、85.35%、13.72%)高于婴儿组(6.71%、49.35%、96.54%、50.87%、9.74%),差异均有统计学意义(χ^(2)=8.369、237.184、16.033、373.121、5.902,P均<0.017)。不同年份比较,CMV-IgM阳性率2016年最高,各年差异有统计学意义(χ^(2)=15.816,P<0.05);不同年份TOX-IgG、RV-Ig G、CMV-IgG、HSVⅠ-IgG、HSVⅡ-IgG阳性率差异均有统计学意义(χ^(2)=216.002、90.545、37.047、59.527、57.623,P均<0.05)。结论皖南地区0~3岁婴幼儿中TORCH既往感染以CMV、HSVⅠ和RV为主,现症感染主要为CMV,对婴幼儿进行TORCH感染筛查检测对于保护儿童的健康至关重要。此外,应做好妊娠规划、产前保健和筛查,预防TORCH感染。

廊道旅游地农户旅游生计资本变化特征及影响因素--以皖南川藏线为例

与传统板块型旅游地相比,廊道旅游地具有产品全时化、空间广域化、消费乘数化特征,对农户生计辐射带动作用更强。以皖南川藏线为例,构建农户旅游生计资本评价指标体系,采用熵值法动态探究廊道旅游地农户旅游生计资本变化,并采用地理探测器对其驱动因子进行考察,结果表明:(1)参与旅游经营后,农户旅游生计资本变化显著,自然资本下降了31.13%,物质资本变化幅度最大,增长了297.86%。人力资本、社会资本和金融资本分别增长了176.66%、175.20%和95.32%。(2)自然资本中生态环境约束强度下降幅度最大,物质资本中私家停车位的增加值和增加率均最高,人力资本中返乡人数增长最为显著,金融资本中农户家庭年收入增长最强劲,社会资本中使用网络媒体种类上升最明显。(3)廊道旅游地农户旅游生计资本变化同时受自然环境、社会经济和廊道条件影响,表现为自然环境限制农户用地条件、社会经济条件释放景区引流作用并将农户旅游生计资本嵌入在地生计链、廊道近邻效应提升旅游生计资本潜力。

基于叙事设计的皖南红色文创产品设计

文创产品作为媒介在红色文化传播过程中起到重要作用,对产品叙事体验的关注也日益重要。以皖南红色文化元素为研究对象,通过大量的文献和具体的设计实践,探讨叙事设计融入红色文创产品的可行性和必要性,提出皖南红色文创产品叙事设计模型。从设定叙事主题、优选形式要素、设置叙述情境三个角度出发,总结皖南红色文创产品的设计思路,即紧扣皖南文化特色、巧用形式叙述故事、定位人群设置情境。叙事设计方法使皖南红色文创产品在市场竞争中具备更加独特的文化特色和市场优势,是促进皖南红色文化传承和发展的有效途径。

皖中南地区铁路物流运输组织优化研究

为深入推进铁路供给侧改革,提升铁路物流竞争力,分析了皖中南地区铁路物流运输组织现状及存在的问题,即货运站货物运量较低,货物种类单一,货运站货运设施设备老旧,货场智能化、信息化发展水平低,部分从事装卸作业人员的素质也偏低。针对以上问题,提出了提高铁路物流市场营销手段,优化中欧班列开行方案,加强和升级货场基础设施建设智能化、信息化,大力发展集装箱运输,优化现场装卸车作业组织,积极做好铁路保价运输工作,提升对装卸人员的业务管理水平的建议,对探索皖中南地区铁路物流运输发展的新模式,优化提升皖中南铁路物流运输的经营、安全质量具有重要意义。

新中国成立前后皖南地区的匪患治理研究

新中国成立前后,皖南地区匪患的形成既与民国历届政府未能根除匪患密切相关,又是国民党反共计划的直接产物。匪徒袭击皖南中共党政机关,劫掠物资,制造反动谣言和武装暴乱,给解放区造成巨大的危害。皖南区委和人民政府通过军事打击和政治瓦解相互配合,积极动员群众参与剿匪斗争,在较短的历史时期内便肃清了皖南匪患。中共通过剿灭皖南匪患,挫败了国民党破坏解放区的计划,有效镇压了封建势力,保证了政权建设等各项工作顺利进行。皖南剿匪斗争的成功经验表明,应对重大社会危机需要政府保持坚定的意志和战略定力,依据实际情况灵活施策,更需要积极动员人民群众参与社会治理。

皖南“小三线”旌旗厂工业遗产保护策略研究

以探索皖南“小三线”工业遗产现状并据此制定相应保护策略,为相关工业遗产的保护再利用提供参考为目标。以旌旗机械厂为例,运用工业考古学田野调查结合文献的方法了解遗存现状,因地制宜提出相应保护建议。研究发现,厂房现状或被用作生产加工之用,或呈杂草丛生、残垣断壁之象,现状不容乐观,亟待兼顾“保护”与“利用”,并结合自然环境特征制定有机保护措施。