Analysis of the Sedimentary Characteristics and Origin of the “Old Red Sands ”in the Coastal Areas of Southeast Fujian

The "Old Red Sands" are widely distributed and typically developed over the coastal areas of Southeast Fujian, but there are different views on their origin. Based on the overall field investigations and a series of lab studies, the paper suggests that the "Old Red Sands" are mainly formed by the beach wind-drift sands and ,locally, by slope wash and alluviation.

East Asian Winter Monsoon record from the environmental sensitive grain size component of QF Old Red Sand, Haitan Island, China

The ＂Old Red Sand＂ is widely distributed along the coast of Fujian Province, China. Most studies have been carried out from as- pects of the origin, age and laterization of the ＂Old Red Sand＂, but this paper focused on reconstructing the history of the Asian Winter Monsoon change. On the basis of granulometric analysis of high-resohition samples, we have obtained environmental sen- sitive grain size component （ESGSC） from the Qingfeng （QF） profile by using the grain size-standard deviation method, which proves that the selected ESGSC is an important climate proxy. The mean grain size of this ESGSC could be used to reconstruct the East Asian Winter Monsoon （EAWM） intensity. As such, the history of the EAWM change since 44.0 ka reconstructed here reveals three main phases based on chronology dates of previous researches： （1） 44.0-25.5 ka B.P., the EAWM is relatively weak but increases gradually with fluctuations; （2） 25.5-15.5 ka B.P., relatively strong with high frequency fluctuations; （3） 15.5-7.1 ka B.P., with a weaker winter monsoon, but during 11-10 ka B.P. is remarkably enhanced. The EAWM recorded by mean grain size of the two neighboring sections have a better repeatability, so the millennial scales oscillation should be a reliable signal of the EAWM intensity. The climate recorded by ESGSC of the QF ＂Old Red Sand＂ compared to 6-80 of Huhi Cave stalagmites and Greenland GISP2 ice cores shows a good consistency, especially in detail, the YD event and four Heinrich events are all recorded, but the signal of D-O cycles was relatively weak.

Current study and prospect of the Old Red Sand along the southeast coast of China

The Old Red Sand is composed of brown-red, red, or orange-yellow semi-cemented and medium-fine sand sediment, mainly dis- tributed along the southeast coast of China. Based on previous studies, this paper summarizes the distribution and forms, sedi- mentary characteristics, formation mechanism, developing age, reddening process and the paleo-environment, suggesting that the Old Red Sand is mainly aeolian sediment of Late Pleistocene Age. The reddening process is mainly the result of decomposition and oxidation of iron-containing minerals caused by hot and humid tropical and sub-tropical climate. In this study, existing prob- lems are discussed and the prospect of further research is presented as well.

Beneficiation and Characterization of Detrital Zircons from Beach Sand and Red Sediments in India

This paper deals with the recovery of zircon minerals from beach sand and red sediments of bad land topography and flow sheets with material balance are suggested. The experimental data reveal that the total heavy mineral content of red sediment sample is 43.9% in which zircon mineral concentrate is 2.75% by weight, where as for beach-dune sand sample the THM content is 16.7% in which zircon mineral concentrate is 0.16% by weight. It is found that U and Th and REE elements contents are much higher in red sediment zircon sample than beach sand zircon. Zircon concentrates recovered from beach-dune sand and red sediments contain 98 to 98.1% zircon with 79.6 to 80% recovery respectively. These zircon minerals from both the sources are suitable for industrial applications.

An old red sofa

Our oldest daughter is having trouble letting go of an old red sofa.It’s not the sofa she’s having trouble letting go of as much as the memories.It was their first sofa.It has been loaded and unloaded onto moving trucks seven times.Three kids have eaten on it,dripped on it,and jumped on it.Yet she’s having a hard time letting go and asked if I thought that was strange."Completely,"I said,"You get it from me."

Formation of "old red sands" and paleogeographic environment on South China coasts

The formation and development environment of the "old red sands" on South China coasts is discussed according to the investigation in the field and laboratory works. The authors believed that the "old red sands" are the aeolian sediments deposits in the last glacial period of late Pleistocene when the sea level was lower than the present, and the laterization took place under the hot and wet climate during the later interglacial and postglacial periods when the sea level was relatively high.

Gamma Ray Shielding from Saudi White Sand

This study is a comparison of gamma ray linear attenuation coefficient of two typs of shielding materials made of Saudi white and red sand. Each shield was consisted of one part of cement two parts of sand in addi-tion to water. Different thicknesses were tested. The concentrations of all elements in each shield material were determined by Inductively Coupled Plasma Mass Spectrometer (ICP-MS). The results obtained from the ICP-MS were used in MCNP4B (Monte Carlo N-Particle Transport Computer Code System) [1] to calculate the attenuation coefficient. The theoretical (MCNP4B) and the experimental calculations were found to be in a good agreement. In the casw of the largest thickness used, 28cm, the gamma ray intensity passing through the white sand shield was approximately half of the intensity obtained through the red sand shield. The average linear attenuation coefficients were found to be 0.17cm-1 and 0.15cm-1 for white and red sand shields respectively. The study shows that white sand is better for attenuating gamma ray compared to the red sand.

基于AHP的革命老区红色旅游资源评价——以涞水县平西抗日根据地为例

充分认识并深入挖掘红色旅游资源价值是推动革命老区红色旅游高质量发展的重要基础。以河北省涞水县平西抗日根据地为例,从红色旅游资源价值、资源条件和资源影响力三个维度构建革命老区红色旅游资源评价层次模型,运用AHP层次分析法对革命老区的红色旅游资源进行综合评价,发现评价因素层的红色旅游资源价值对案例地红色旅游的影响最大。最后根据评价结果,提出未来涞水县平西抗日根据地红色旅游发展的具体路径,包括区域协同、产品升级、产业融合、市场培育等。

海陆丰红色文化的精神内涵与时代价值

海陆丰革命老区是“农民运动大王”彭湃的故乡,大革命时期全国农民运动发展的重要策源地,我国第一个县级苏维埃政权的诞生地。海陆丰人民在党的领导下,为追寻革命理想,不畏牺牲、抛头颅洒热血,在血与火的考验中创造出了丰富而深刻的红色文化。海陆丰红色文化是对伟大建党精神的赓续和传承,蕴含着敢为人先、勇于开拓的创新意识,依靠群众、一心为民的人民立场,百折不挠、敢于斗争的精神力量,无私奉献、不怕牺牲的英雄气概。在向第二个百年奋斗目标迈进的新征程上,传承好海陆丰红色文化,凝聚起矢志发展的磅礴力量,对推动海陆丰革命老区振兴发展,具有重大的现实意义。

红色文旅融合发展效应时空演变及短板分析——以湘鄂渝黔革命老区为例

系统思辨红色文旅融合发展效应的内涵,构建综合性评价指标体系,揭示湘鄂渝黔革命老区2013—2022年红色文旅融合发展效应的时空演化特征及其短板。结果表明:(1)红色文旅融合发展效应水平偏低但稳步缓慢提升,呈现东部率先实现升级并带动周边提升的格局。(2)各县域红色文旅融合发展效应提升水平交错呈现,尚未形成稳定的增长极。(3)红色文旅融合发展效应区域差异小,整体上呈现波动缩小态势,但湖北片区与贵州片区差异略有扩大。(4)社会效应与文化效应是关键短板,创新发展、文脉传承与地方关注度是三大突出短板因子。

中卫市退砂土地农作物复垦的可行性分析研究

本研究旨在分析宁夏中卫市沙坡头区退砂地的土壤质量提升及农作物种植适宜性。通过连续3年的田间试验,收集并分析了8种宁夏地区广泛栽培的耐旱作物对土壤理化性质的影响及其经济效益。分析了退砂耕地适生农作物对当地土壤质量的影响及经济效益。结果表明,朝天椒和红葱在退砂地上表现出较高的产量和产值,且投入产出比大,是退砂地优先选择的作物。此外,玉米和小杂粮等作物轮作种植也显示出改良土壤结构和提高肥力的潜力。本研究为退砂地的科学利用提供了理论依据和实践指导,有助于推动中卫市经济社会可持续发展。

红色文化资源赋能革命老区乡村振兴的时代价值及实现路径

红色文化资源作为革命老区的优势资源,在推动乡村产业发展、建设和美乡村、促进农村基层治理、培育文明乡风等方面具有重要的时代价值。开发利用红色文化资源是助力革命老区乡村振兴的优先重要途径。当前,革命老区红色文化资源仍存在着开发利用形式单一、基础配套设施亟需提升、专业人才比较匮乏等现实困境。为实现红色文化资源与乡村发展的有机结合,激发乡村发展的内生活力,形成红色文化资源保护与革命老区乡村振兴互动促进的新局面,需要从持续优化顶层设计、高效整合资源、突出规范引领、发挥基层多元主体合力等方面着手,把红色文化资源禀赋转化为革命老区乡村振兴优势,最大效能地助力乡村振兴,促进革命老区高质量发展,逐步实现共同富裕。

江西星子镇沙岭沙山顶部一处红色砂层的粒度分析及释光年代研究

鄱阳湖作为我国最大淡水湖,其周边分布若干沙山。此前研究多认为这些沙山为风成堆积的产物。选取星子镇沙岭沙山顶部(吴淞高程约58.3 m)一处红色砂层(含泥质团块)为研究对象,开展粒度分析和释光测年,以进一步揭示其形成环境和年代。粒度结果为:(1)以中粗砂为主;(2)粒度分选性差;(3)频率分布曲线显示该红色砂层包含多峰;(4)概率累积曲线显示该红色砂层包含1个推移组分、2个跃移组分和4个悬移组分;(5)萨胡判别公式值均>-2.74。之后,对红色砂层下伏泥层、红色砂层和红色砂层上覆黄色砂层开展石英单颗粒释光测年,其年代分别为:(24.7±2.1) ka、(24.0±2.4) ka和(22.4±3.9) ka。研究表明该红色砂层虽然形成于MIS2阶段,但其不是干旱环境下的风成沉积砂层。

The age of the "old red sand" on the coasts of south Fujian and west Guangdong, China

The sedimentary strata and deposition ages of the 'old red sand' distributed along the coasts of south Fujian and west Guangdong are determined by lithostratigraphy, magnetic stratigraphy and earth chemistry combined with TL, ESR and 14C-dating techniques. The research shows that the 'old red sand' was aeolian sediments deposited from 55 400 to 9 000 aBP, the last glacial period in the middle and later age of Late Pleistocene. Most of them deposited in two periods of 56-42 ka and 30-10 ka. The 'old red sand' deposited in the period of 30-10 ka, the later Wurm glacier substage (Q33), developed on the largest scale with the widest distribution.

红色资源赋能革命老区乡村振兴的路径分析——基于A县“红色农文旅融合”的调研

推进革命老区实现乡村振兴是实现共同富裕的现实要求。A县革命老区“红色农文旅融合”的创新实践表明,以红色资源赋能革命老区乡村振兴意义重大。从发展背景来说,历史要求呼唤红色资源焕发时代价值、现实责任需要红色老区展“新颜”、资源禀赋赋予红色老区“发展内核”、产业增效激励红色老区发展扩容。从发展举措来说,要发动“红色引擎”,运转红色文化资源,引领高效发展;统筹“红色政策”资源,推动长效发展;激活红色治理资源,保障稳定发展。从发展成效来说,红色文化影响力增强,树立县域发展红色标杆;农文旅产业深度融合,拓宽共同富裕红色路径;基础设施体系更加完善,提升公共服务均等化水平;共建共治格局有效构建,全方位夯实基层治理根基。从发展启示来说,要坚持党建引领和党政统筹联动,做好统筹文章;要把牢农文旅高质量发展基准线,做实保护文章;要整合和活用县域内外多种资源,做深融合文章;要打造文化价值和优质服务名片,做响品牌文章。

赤水嘉定群一段红层砂岩机制砂工程特性研究

【目的】赤水以丹霞地貌而著名,但赤水红层区常见坡面防护材料颜色以冷色调为主,与红层景区原岩颜色极不协调。为了研制一种符合赤水红层区景观协调新型坡面防护材料,以红层砂岩为原料破碎为机制砂,并测试机制砂基础特性。【方法】利用红层砂岩机制砂为掺料配置机制砂砂浆,测试砂浆在不同级配下3 d、7 d、28 d抗压强度、保水率以及稠度,获取机制砂砂浆最优级配,并在最优级配下利用正交试验测试不同砂胶比、石粉掺量以及保水剂掺量下机制砂砂浆性能。【结果】研究结果表明:在最优级配试验中,砂浆28 d抗压强度随着细度模数的增大而增大,保水率与稠度在细度模数为2.98时性能最优。在最优配比试验中,砂胶比、石粉掺量、保水剂掺量与机制砂砂浆抗压强度、抗折强度、拉伸粘结强度、核磁共振孔隙率成反比,石粉掺量对砂浆色差值影响最大。【结论】红层砂岩机制砂基本特性满足规范要求,级配特性呈现“哑铃状”;机制砂砂浆最优级配细度模数为3.31;机制砂砂浆配比在砂胶比2.5、石粉掺量22%、保水剂掺量0.22%条件下,抗压强度、抗折强度、拉伸粘结强度、核磁共振孔隙率以及颜色性能最优。利用红层砂岩机制砂配置所得机制砂砂浆满足M10砂浆标准且砂浆颜色与砂岩颜色接近。

Luminescence chronology of “Old Red Sand” in Jinjiang and its implications for optical dating of sediments in South China

A weathered deposit in South China is widespread on the coastal areas of Fujian and Guangdong provinces,China.This deposit consists of slightly cemented,medium-to fine-grained sands,and is characterized by its colors of red,brown red,light reddish brown or dark yellowish orange,and is usually called "Old Red Sand".The uncertainty in its formation age has been a major obstacle to the study of this type of deposit.In this paper,optically stimulated luminescence(OSL) techniques were used to date the "Old Red Sand" sediments from Jinjiang,Fujian Province,China.The effect of the geochemical behavior of uranium and thorium in sediment during chemical weathering on estimation of annual dose was investigated.The results show that the change in annual dose due to weathering poses a major problem for the optical dating of such weathered sediments.The optical dating of these weathered deposits will produce erroneous ages if average annual dose during burial cannot be correctly estimated.For the profiles studied,the OSL dates obtained on samples from the upper part do not represent the burial age of the samples.It is highly likely that they are underestimated due mainly to the accumulated radioactive elements as a result of chemical weathering.It is concluded that changes in annual dose due to chemical weathering must be considered when dating similar sediments in South China.With a detailed analysis of the OSL dating results,the chronology of the marine terraces in this area was suggested.The lowest terrace was formed at ～3.5 ka and the second terrace was dated to ～74 ka.The age of the highest terrace may not be established accurately,but is inferred to be older than the apparent OSL date of～77 ka and so is the Paleolithic artifacts from it.

韶山革命老区开展红色体育旅游的成功经验与启迪

红色革命老区开发红色体育旅游对推广红色体育文化、传承红色体育精神和赓续红色血脉具有重要意义。本文采用文献资料法、实地调研法等研究方法,分析韶山革命老区开展红色体育旅游的概况,归纳总结其开展红色体育旅游的成功经验,提出对其他革命老区开展红色体育旅游的启迪。韶山革命老区开展红色体育旅游的成功经验:开发红色特色景区,开创红色体育课程,推动红色体育研学,组织红色体育赛事。韶山革命老区开展红色体育旅游的启迪:整合红色景区优势,增加居民就业机会;挖掘当地红色文化,开发红色体育课程;融合红色体育精神,开展红色体育研学;结合红色纪念事件,举办红色体育赛事。

革命老区红色文化景观基因图谱研究——以铜陵枞阳红色村落为例

革命老区红色文化资源底蕴深厚,不仅是中国共产党人革命精神的综合体现,更蕴含了崇高的革命理想和革命信念,对推动红色基因传承具有重要的意义。乡村振兴战略背景下,以安徽铜陵枞阳革命老区传统村落为调研对象,立足文化景观基因理论,识别和提取物质文化景观和非物质文化景观基因,解读革命老区红色文化景观基因图谱谱系特征,缕析革命老区传统村落红色基因传承路径。借助空间载体保育红色文化景观主体基因,为振兴老区村落红色文化赋能。利用数字媒介修复红色文化景观附着基因,赓续老区村落红色文化资源禀赋,融合乡土文化活化红色文化景观延伸基因,提升老区村落红色文化内涵。

大别山革命老区红色旅游景区可达性研究

红色旅游景区可达性是革命老区振兴发展与红色旅游教育功能发挥的重要影响因素.基于大别山革命老区229个红色旅游景区数据样本,运用GIS空间分析与数理统计方法,研判红色旅游景区可达性空间格局.结果表明:大别山革命老区红色旅游景区区域外可进入性表现为南部通畅、西北—东南两端闭塞的“南入位优、极端分化”非均衡状态,区域内服务可达性较好,对发挥红色旅游教育功能具有良好的支撑作用,景区间连通可达性已形成高品质景区为主导的“中心强两端弱、局域空间错位”的空间分异格局.