崂山古冰川遗迹的地质证据

崂山是中国海岸线上的最高峰。研究发现,崂山发育有典型的古冰川侵蚀和堆积地貌,拥有我国东部罕见的冰碛海岸和冰碛扇等地貌类型。更新世期间,崂山至少发育过4次古冰川作用。更新世早期,崂山东部的雪线为60~90 m(现代海拔),崂山及其周围共发育60余条古冰舌,东部的冰舌一直伸入黄海之中。孢粉组合特征说明,崂山在冰期具备形成冰川的气候条件;堆积物粒度曲线显示为冰川成因的沉积特征。研究还发现,中国东部的古冰川遗迹可能大部分被埋藏起来;区域地形特征和当地气候条件是决定雪线高度的关键因素。     

秭归庙河的第四纪冰川遗迹

描述了秭归庙河一带的冰斗、漂砾、冰川谷及冰水阶地等冰川遗迹,该古冰川的发现有利证实中纬度地区中低山第四纪时冰川运动的存在．为了探讨该地第四纪经冰川作用,从影响冰川形成的机制（降水、温度和雪线高度）出发,通过与庐山地区的气候特征对比,来进一步阐明秭归地区第四纪冰川作用．基于庙河阶地中钙结岩中δ^18O的分析,恢复了该地第四纪冰期时的古气温和降雨量,第四纪冰期时温度和降水分别为一3．1～＋3．2℃和776～1155mm,这种气候背景条件有利于低山冰川作用的形成,总结出庙河第四纪时的冰期．     

再论黄山古冰川遗迹问题——与周慕林同志商榷

1982年春,周慕林同志来到黄山考察,对黄山古冰川遗迹配套式划分,如角峰、冰斗、积雪盆、U谷、悬谷、冰臼、冰川条痕石、侧碛、终碛垄等,这种划分不免陷于牵强附会,引起同行的异议。 通过多次调查研究,笔者认为是山区流水作用现象和泥石流堆积特征以及花岗岩本身结构,经过寒冻风化、重力崩塌而成的地貌景观,与冰川作用无关。     

渝鄂湘黔毗邻地区古冰川研究

在地质历史中,地球曾发生过震旦纪冰川、石炭-二叠纪冰川和第四纪冰川3次冰川活动。为研究和预测当今气候,按照岩石学原理和李四光教授创立的确定古冰川的3个标准,研究了渝鄂湘黔毗邻地区的古冰川事件,结论是该区只发生过震旦纪冰川;第四纪时不存在古冰川遗迹,没有发生过冰川活动;为温暖湿润气候。     

神农架大九湖地区更新世冰川遗迹的初步研究

作者通过两次实地调查,发现神农架大九湖地区更新世冰川遗迹有冰斗、槽谷、基岩鼓丘和侧碛等。冰碛砾石砾向组构分析表明砾石a轴走向大多与所在谷地走向平行,倾角18～23°;砾石ab面倾向离散,倾角15—20°。冰碛细粒部分79.1—84.5%由粉砂和砂组成,粒度频率曲线呈双峰态。冰碛石英砂表面电镜扫描成象表明砂粒表面具有典型冰川砂的特征.根据冰川地貌特征和室内分析结果,本文把该地区晚更新世气候期划分为两次冰期和一次冰缘期。     

中国第四纪冰川遗迹陈列馆

中国第四纪冰川遗迹陈列馆位于石景山区模式口的第四纪冰川基岩冰溜面遗迹旁，面临永定河，背靠翠微山，冰川擦痕清晰，集中而大片，保存十分完好，是世界上迄今为止惟一的一座建在第四纪冰川遗迹旁的自然科学类博物馆。     

贺兰山第四纪古冰川研究及其意义

文章着重介绍了贺兰山第四纪古冰川研究课题设计的学术思想、研究内容及其意义。     

门头沟区：世界罕见冰川遗迹现身

近日，中国地质科学院地质研究所韩同林教授、九零六水文地质工程地质队王洪杰高级工程师，再次来到妙峰山镇斜河涧村白龙沟冰川谷考察巨型冰川漂砾。     

嵩山旅游地质资源的开发战略问题

嵩山地质现象具有六大突出特点。在此基础上,讨论了嵩山旅游地质资源开发的三个战略问题：从地质现象向旅游地质资源的转化——转化战略;旅游地质资源的开发阶段——资源开发战略;旅游地质资源的开发系统——市场开发战略。     

大长白山旅游景区开发构想

长白山是国家首批5A级景区,近年来吉林省政府为发展长白山旅游作出了极大的努力,一个在国内外颇具影响力的景区已初见端倪,但其游客人数和旅游总收入与国内著名的5A级名山景区仍有较大的差距.主要问题集中在区位偏远、适游时间较短、旅游资源开发层次较浅、服务设施不健全、景区范围有限、高等级旅游产品较少、旅游项目较为单一和旅游资源的文化挖掘不够等方面.在分析差距成因的基础上,论证了扩大长白山旅游景区的必要性和把长白山打造成国内外知名旅游景区的有利条件,提出了要加强与邻省和邻国的合作力度,努力发展长线旅游、多形式旅游、冰雪旅游、发掘景点的内在潜力和观赏深度等开发措施.     

DINSAR measurement of glacier motion in Antarctic Grove Mountain

Grove Mountain is an important nunatak region on East Antarctic Glacier that blocks the ice flow to- ward Lambert Glacier. The existence of nunataks and subglacial mountains leads to complex ice flow patterns, which are difficult to be measured by conventional ground-based methods. In this study, several JERS-1 and ERS-1/2 SAR images covering this area are used for 3-pass and 4-pass differential interferometric processing. The ice flow field of Grove Mountain and the eastern zone are derived and validated with related knowledge. The research shows that DINSAR is an effective method for meas- uring complex ice flow in Antarctic inland glacier. L-band DINSAR is more suitable for mid or fast ice flow than C-band over this region.     

昔阳县方台锌矿矿床地质特征及地质成因浅析

在简述昔阳县方台锌矿矿床地质特征的基础上,详细介绍了锌矿的矿体特征、矿石质量、矿石自然类型及矿床地质成因等。     

新时期继续弘扬老山精神的实践意义

老山精神有着丰富的思想内涵,包括祖国利益高于一切的爱国主义精神;英勇顽强不怕流血牺牲的革命英雄主义精神;为祖国和人民的利益甘愿吃亏的无私奉献精神;团结协作的集体主义精神,不畏一切艰难困苦的革命乐观主义精神。它集中体现了我军坚持党的绝对领导,忠于党、忠于祖国、忠于人民的坚定政治信念;集中体现了我军艰苦奋战,不怕牺牲,誓死保卫国家安全,忠实履行职责使命,一往无前、勇于献身的战斗精神;集中体现了人民群众拥军支前,并肩战斗,军民团结的伟大力量;生动谱写了边疆各族人民共同开发、维护稳定、积极进取的生动史实篇章。在新的发展时期,不仅要学习老山精神,还应继续坚持和发扬。     

青岛崂山植物区系分区及分布特点研究

根据植物区系分区的原则和方法,将崂山地区划分为五个植物小区,分别为北九水植物小区(A小区)、仰口植物小区(B小区)、北九水到太清宫过渡的植物小区(C小区)、太清宫植物小区(D小区)、华楼和夏庄植物小区(E小区).在此基础上,绘制崂山植物区系分区图,探讨各个植物小区的种的丰富度、相似性系数和特有性等区系特征.结果表明:A小区的植物种类最丰富,植物种类数占总种数的70.4%,E小区最贫乏(22.1%);A小区和C小区两个植物小区的物种相似性系数最高(53.3%),D小区和E小区的相似性系数最低(30.8%);特有种在各小区所占比例中B小区比例最高(17.29%),E小区比例最小(7.21%).     

Paleoproterozoic glaciation: Evidence from carbon isotope record of the Hutuo Group,Wutai Mountain area of Shanxi Province,China

Palaeoproterozoic global glaciation (～2.3 Ga) may have been the first “snowball” Earth event in Earth history. North China has well-exposed sedimentary deposits of this time period with minimal postdepositional alteration. Sedimentary evidence of a glaciation event has been lacking, however. Here we analyzed carbon isotope composition of the Paleoproterozoic Hutuo Group (2.5–2.2 Ga) in the Wutai Mountain area, Shanxi Province, North China. Our data show, in an older to younger chronostratigraphic order, (1) positive δ ¹³C_carb values in the Dashiling Formation of the Doucun Subgroup (3.2‰ to 1.0‰, VPDB); (2) a decrease in δ ¹³C_carb values from the Wenshan Formation to the middle Daguandong Formation (from 2.0‰ to–1.2‰), during which time the occurrence of stromatolites declined; (3) a pronounced negative excursion in the upper Daguandong Formation, at the boundary of the Daguandong and Huaiyincun formations (from 1.4‰ to ?3.3‰), where stromatolites disappeared; and (4) a gradual increase of δ ¹³C_carb values in the Beidaxing and Tianpengnao formations (from ?1.2‰ to 1.4‰), during which time stromatolites returned. We argue that the negative carbon isotope excursion recorded from the Jian’ancun Formation to the middle Daguandong Formation of the Hutuo Group may have been North China’s response to the Palaeoproterozoic global glaciation.     

Geomorphologic evolution and environmental changes in the Shaluli Mountain region during the Quaternary

Geologic and geomorphologic evidence from the Shaluli Mountain indicates that the planation surface that formed in the Late Tertiary disintegrated during the Late PUocene-Early Quaternary. At the same time, rift basins appeared on some parts of the planation surface, and began to accumulate fluvial-lacustrine sediment. These are interpreted as being the response of this region to Phase-A of the Qingzang Teetnnic Movement. After this, the Shaluli Mountain eontinued to rise in several pulses. Faulting and incision by some large tributaries of the Jinsha and Yalong Rivers resulted in several rift river valleys and the earliest terraces. Generally. the planation surface in this region had been uplifted to ahout 3500--3700 m a.s.I, no later than 550-600 ka BP. after the Kunlun-Huanghe Tectonic Movement, and coupled with global glacial climate, and resulted in the earliest glaciation recognized so far in the Hengduan Mountains. At the same time, Ioess was deposited in the Ganzi area of the northern Shaluli Mountain. During the last glacial period, the Shaluii Mountain approached its present altitude and developed several large ice caps, such as the Daocheng Ice Cap and Xinlong Ice Cap, as well as several huge valley glaciers. These paleoglaciers produced some of the most Spectacnlar glacial topography on the Tibetan Plateau.     

崂山林场不同密度赤松林的生长差异研究

研究了崂山林场不同密度下赤松人工林的生长差异性以及胸径与冠幅的相关性。不同密度下赤松人工林径阶分布呈现先增后减的趋势,随着林分密度的增大,胸径生长量显著减少,径阶比例减少;赤松人工林的平均树高、枝下高以及冠幅均呈上升趋势。在不同密度的赤松林分之间,树高生长差异不显著,枝下高差异显著,胸径差异极显著。赤松人工林的冠幅随着林分密度的增加而逐渐减少,但冠幅的椭球体积与之相反;通过分析得到二次多项式方程作为赤松人工林胸径与冠幅的最优关系模型,并求出方程关系式,为林业生产提供依据。