COMMENTS ON “SPATIAL VARIATION OF HILLSLOPE PROFILES IN THE CUMBERLAND PLATEAU,KENTUCKY” BY EDMUND B. WOOOS     

《The Professional geographer》2013,65(4):488-489

Book Reviewed in this article:

Main Street: Northeastern Oregon: The Founding and Development of Small Towns. Barbara Ruth Bailey.

Food Politics: The Regional Conflict. David N. Balaam and Michael J. Carey, eds.

The International Economy and Industrial Development: Trade and Investment in the Third World. R. Ballance, J. Ansari and H. Singer.

Neighborhoods in Urban America. Ronald H. Bayor, ed.

The English Heartland. By Robert Beckinsale and Monica Beckinsale.

Regional Dimensions of Industrial Policy. Michael E. Bell and Paul S. Lande, eds.

Tension Areas of the World. D. Gordon Bennett, ed.

Latin America: an Introductory Survey. B. W. Blouet and O. M. Blouet, eds.

Integration and Division: Geographical Perspectives on the Northern Ireland Problem. Frederick W. Boal and J. Neville H. Douglas, eds.

Energy and Land Use. Robert W. Burchell and David Listokin, eds.

Slopes and Weathering. Michael Clarke and John Small.

Alaska's Rural Development. Peter G. Cornwall and Gerald McBeath, eds.

The Politics of Park Design: A History of Urban Parks in America. Galen Cranz.

World Congress on Land Policy, 1980, Proceedings. Matthew Cullen and Sharon Woolery, eds.

Oregon Divided: A Regional Geography. Samuel N. Dicken and Emily F. Dicken.

Urban Food Marketing and Third World Rural Development. T. Scarlett Epstein.

South Africa: Spatial Frameworks for Development. T. J. D. Fair.

Institutions and Geographical Patterns. Robin Flowerdew, ed.

Industrialization of U.S. Agriculture, An Interpretive Atlas. Howard F. Gregor.

Planning Theory: Prospects for the 1980s. Patsy Healy, Glen McDougall and Michael J. Thomas, eds.

Neighborhood Mobilization: Redevelopment and Response. Jeffrey R. Henig.

The American Urban System: A Geographical Perspective. R. J. Johnston.

Climate, History and the Modern World. Hubert H. Lamb.

Climate and History: Studies in Past Climates and Their Impact on Man. T. M. L. Wigley, M. J. Ingram and G. Farmer.

China: Railways and Agricultural Development, 1875–1935. Ernest P. Liang.

A Desirable Energy Future—A National Perspective. Robert S. Livingston, T. D. Anderson, T. M. Besmann, M. Olszewski, A. M. Perry, and C. D. West.

Topothesia: Essays Presented to T. S. Ó Máille. B. S. Mac Aodha, ed.

Transportation for the Poor: Research in Rural Mobility. Hal S. Maggied.

Land Uses in American Cities. Harold M. Mayer and Charles R. Haves.

Industrial Organisation and Location. Philip McDermott and Michael Taylor.

Human Adaptability: an Introduction to Ecological Anthropology. Emilio F. Moran.

Regional Analysis and the New International Division of Labor. Frank Moulaert and Patricia W. Salinas, eds.

The Nuclear War Atlas. Victoriaville, Quebec, Canada:

Urbanization and Environmental Quality. Isao Orishimo.

The Garden of Eden: The Botanic Garden and the Re-Creation of Paradise. John Prest.

Earthfire, The Eruption of Mount St. Helens. Charles Rosenfeld and Robert Cooke.

Contest for the South China Sea. Marwyn S. Samuels.

The Future of the Wetlands: Assessing Visual-Cultural Values. Richard C. Smardon, ed.

Tucson: the Life and Times of An American City. C. L. Sonnichsen.

The Geography of Multinationals. Michael Taylor and Nigel Thrift, eds.

Impact of Marine Pollution on Society. Virginia Tippie and Dana Kester.

Reviving the Industrial City: the Politics of Urban Renewal in Lyon and Birmingham. Jerry A. Webman.

Andean Reflections: Letters from Carl O. Sauer While on a South American Trip under a Grant from the Rockefeller Foundation, 1942. Robert C. West, ed.

Cartographic Drawing with Computers. P. Yoeli.  相似文献   

广西云开地区矿产特征及时空分布规律     

安国英 《四川地质学报》2012,32(3):281-285

广西云开地区处于桂东南,是广西境内铅锌金银多金属重要成矿区域之一.区内构造复杂,岩浆活动强烈,侵入岩及其发育.矿产资源丰富,矿种类型较多.区域矿产受构造单元控制均呈北东向成群成带展布,各矿床(点)严格受其构造及岩性控制,并与岩浆活动密切相关.矿产具有成矿物质多来源、成矿作用多阶段、成矿时代多期性和长期性等规律.  相似文献   

桂西北微细浸染型金矿找矿远景区优选     

海涛  方建刚  刘胜  傅良刚 《四川地质学报》2012,(2):176-182

“桂西北”是我国以微细浸染型金矿为主的重要金成矿集中区之一,具有重要的找矿前景和研究价值.文章通过对“桂西北”以高龙、金牙两典型微细浸染型金矿床为主要研究对象,重点分析其地质特征、成矿地质条件,进而总结了研究区微细浸染型金矿的成矿作用机制、成矿模式.最后,结合桂西北地区特定的沉积古地理特征、构造、围岩蚀变及已有地球化学、矿产等材料,结合前人研究成果,初步圈定了5个可供进一步找矿的远景区  相似文献   

桂西北地区石英斑岩脉白云母40Ar/39Ar 年龄及其地质意义   总被引：3，自引：0，他引：3  

陈懋弘  陆刚  李新华 《高校地质学报》2012,18(1):106-116

华南西部右江褶皱带内部燕山晚期岩浆岩主要为成群分布的基性- 超基性岩墙群和超酸性岩脉带。本文对桂西北巴
马-凤山-凌云一带的石英斑岩脉进行了斑晶白云母40Ar/39Ar 法测年,获得凤山弄黄北东向岩脉的40Ar/39Ar 坪年龄为（95.59
±0.68）Ma,相应的等时线年龄为（95.0±1.0）Ma;巴马北西向岩脉的坪年龄为（96.54±0.70）Ma,相应的等时线年龄为
（95.91±1.1）Ma。上述年龄代表了岩脉的侵位年龄。这些年龄数据进一步证明右江褶皱带及其周缘燕山期岩浆活动集中于
80~100 Ma 之间,暗示该区晚白垩世发生了大规模的岩石圈伸展减薄事件。华南西部晚白垩世花岗质岩浆活动与大规模的
锡多金属成矿有关,因此桂西北地区石英斑岩集中出露的地方是否具有寻找深部锡多金属矿的前景值得关注。同时,该期
岩浆活动是否与以卡林型金矿为代表的低温热液矿床有成因上的联系尚需更多矿床地质和年代学资料的证实。  相似文献   

广西防城-灵山断裂带北东支灵山段活动性初探     

何军  刘怀庆  黎清华  朱章显 《华南地质与矿产》2012,28(1):71-78

防城-灵山断裂北东支灵山段为北部湾经济区内地震活动最为频繁的地区。为了查明防城-灵山断裂带北东支灵山段的断裂活动变形特征,尤其是在活动性特征的关键部位控制断裂构造的产状特征,断裂产状深部变化、断裂带规模及展布方向,本文通过遥感解译、地质地貌调查以及浅层地震和地质雷达勘探等物探方法对广西防城-灵山断裂带北东支灵山段的平面展布特征以及活动性进行了初步探讨。结果表明该断裂带呈北东向展布并被多条北西向断裂错断,东西边界分别为灵山断裂和石塘断裂。灵山断裂错断了晚更新世洪积扇阶地,河流流经灵山断裂后发生右旋偏转;石塘断裂表现为宽约250 m的破碎带,次级断裂密集发育。物探结果显示防城-灵山断裂北东支灵山段的东西两支在晚更新世以来均具有较强的活动性。  相似文献   

广西藤县大黎钼矿床地质特征及找矿方向   总被引：1，自引：0，他引：1  

韦子任  黄耀平  叶有乐 《华南地质与矿产》2012,28(4):383-391

广西藤县大黎钼矿床位于钦杭成矿带西南端大瑶山金多金属成矿带上,矿体赋存于大黎岩体南端与寒武纪黄口洞组的内外接触带,受岩体接触带控制,平面上呈环形围绕岩体分布,其中外接触带黄铁绢英岩化地段为主要矿化部位。围岩蚀变以黄铁矿化、绢云母化为主,蚀变范围广,围绕岩体呈面状分布,不同蚀变间相互重叠。矿石以网脉状构造为主,其次为细脉状构造,浸染状构造较少见。矿化特征表明,该矿床成因类型属于斑岩型钼矿床。露头出现的辉钼矿和钼华、围绕斑岩体边缘分布的石英网脉、黄铁绢英岩化蚀变和Mo元素化探异常是重要的找矿指示标志。大瑶山地区花岗质斑岩体出露地区、Mo-Cu化探异常套合较好地区为有利成矿区。大黎岩体西南部接触带和东部地区成矿条件较为有利,可作为下一步找矿工作的重点区。  相似文献   

FIA trends along the Precambrian Rocky Mountains: a new approach to timing continental docking     

H. CAO  C. FLETCHER 《Journal of Metamorphic Geology》2012,30(7):639-650

A similar succession of Foliation Inflection/Intersection Axis (FIAs) trends preserved within porphyroblasts is present in two areas separated by 200 km along the Rocky Mountains. The Precambrian rocks in Central Colorado and Northern New Mexico were affected by deformation and metamorphism from ～1506 to 1366 Ma. A succession of five FIAs trending W–E, SSW–NNE, NNW–SSE, NW–SE and WSW–ENE is distinguished in Central Colorado and dated at 1506 ± 15 Ma, 1467 ± 23 Ma, 1425 ± 18 Ma, not dated and 1366 ± 20 Ma respectively. To the south in Northern New Mexico, a succession of five FIAs trending SSW–NNE, WNW–ESE, NNW–SSE, NW–SE and WSW–ENE is distinguished and dated at 1482 ± 48 Ma, 1448 ± 12 Ma, 1422 ± 35 Ma, not dated and 1394 ± 22 Ma. The excellent correlation of the sequence of FIA trends and their ages between regions reveals a sixfold‐FIA succession across the region with the first developed FIA set in Central Colorado not present in Northern New Mexico and the third FIA set in the region not present in Central Colorado. Preferential partitioning of W–E trending deformation into the Central Colorado region ～1506 ± 15 Ma was followed by SSW–NNE trending deformation that affected both regions at 1470 ± 20 Ma. However, preferential partitioning of WNW–ESE trending deformation into Northern New Mexico at 1448 ± 12 Ma left Central Colorado unaffected. Both regions were then affected by the three remaining periods of orogenesis, the first trending NNW–SSE at 1424 ± 15 Ma followed by one trending NW–SE that has not yet been dated, and then one trending WSW–ENE at 1390 ± 19 Ma. This suggests that the Yavapai terrane was tectonized at ～1506 Ma, prior to amalgamation with the Mazatzal terrane ～1470 Ma. Subsequent orogenesis was initially partitioned preferentially into the Mazatzal terrane, but the following three periods of tectonism affected both terranes in a similar manner.  相似文献   

松辽盆地北部古龙地区登娄库组沉积与构造演化耦合关系研究          下载免费PDF全文

张学娟  张雷  杨倩  卢双舫  杨志如 《地质科学》2012,(4):1162-1175

为明确松辽盆地北部古龙地区登娄库组沉积与构造演化的耦合关系,本文利用古龙地区的地震、钻井、测井和岩心等资料,通过古龙地区登娄库组的构造演化特征、层序地层格架和沉积特征综合研究,对古龙地区登娄库组构造演化对沉积充填特征的控制作用进行分析,结果表明,古龙地区登娄库组沉积时期为断坳转换期,可进一步划分为断陷盆地萎缩阶段早期和晚期、坳陷盆地孕育阶段早期和晚期4个构造演化阶段,分别对应4个三级层序(Sq1-Sq4); 古龙地区登娄库组主要发育冲积扇、扇三角洲、湖底扇、河流相、辫状河三角洲、浅水三角洲、湖泊沉积等沉积体系; 登娄库组构造演化控制着沉积充填演化,各构造演化阶段沉积体系分布特征及沉积演化模式具有明显的差异性,即沉积充填特征与构造演化过程具有良好的耦合关系。具体表现为:断陷盆地萎缩阶段早期(Sq1)和晚期(Sq2)下部地层受断陷作用控制,沉积充填特征符合陆相断陷湖盆沉积演化模式; 断陷盆地萎缩阶段晚期(Sq2)上部、坳陷盆地孕育阶段早期(Sq3)和晚期(Sq4)地层具有坳陷层序地层特征,其中萎缩阶段晚期(Sq2)上部和坳陷盆地孕育阶段早期(Sq3)属于坳陷盆地"河流-浅水三角洲"沉积模式; 坳陷盆地孕育阶段晚期(Sq4)发育干旱背景下的坳陷湖盆"洪水-河漫湖"沉积模式。  相似文献   

北半球白垩纪-古近纪之交生物灭绝期孢粉地层学     

Antoine BERCOVICI  Vivi VAJDA  Arthur SWEET 《地层学杂志》2012,(2):165-178

长期以来,科学家们对白垩纪-古近纪(K-Pg)之交陆地上生物大灭绝事件的趋势与灭绝速率争论不断。这些争论主要集中在脊椎动物上,尤其是非鸟恐龙。尽管如此,在理解K-Pg之交的生物响应以及相关的生态系统扰动时,植被的演化也是一个重要的组成部分。本文综述北半球内白垩纪晚期至古近纪Aquilapollenites古孢粉地理大区的孢粉地层学:在美国,晚白垩世生物组合以一系列关键门类的出现为标志,其中三冬期—坎潘期过渡期以Aquilapollenites以及相关的三突起型属的出现为标志,而马斯特里赫特阶的底界以睛形型的Wodehouseia属与Kurtzipitessp.的出现为标志;Wodehouseia spinata生物组合带以较大的个体与复杂的壁构造为特征,其中一系列的被子植物孢粉单元在K-Pg之交的记录中消失了,这使得K-Pg灭绝事件容易识别;具孔类花粉和Momipites与Caryapollenites两个属的关键种的出现,标志着古近纪孢粉植物群的复苏。近期的资料涵盖了北美大陆的大部分记录,而中国、欧洲和南半球的更多研究将更有助于理解全球陆地生物圈对K-Pg之交撞击事件的响应。  相似文献   

广西海岸带近百年来人类活动影响下环境演变的沉积记录     

夏鹏  孟宪伟  李珍  丰爱平  王湘芹 《沉积学报》2012,30(2):325-332

基于2007年在广西海岸带采集的6根短柱状样（64~97 cm）,在210Pb 年代框架构建的基础上对沉积物中的生源要素（C、N、P）、常量元素以及重金属（Hg、Cu、Pb、Zn、Cd、Cr和As）等指标进行了综合分析,并依此重建了广西海岸带近百年来人类活动影响下沉积环境的演变历程。研究发现,近二十年来重金属和总磷的表层富集和埋藏通量有明显的上升趋势,但整体污染程度依然较轻;总氮的年埋藏通量虽保持相对稳定,但总体高于引起最低级别生态风险效应的下限;而有机质年埋藏通量的逐年减少应与潮间带红树林生态系统的衰退有关。据此可将近百年来广西海岸带的环境演变大致分为两个阶段:即20世纪80年代初以前、80年代初至现在,分别经历了未污染期和轻度污染期。  相似文献