海

又一次来到了海边。海边下着小雨。站在海里,水还很凉;赤脚走在沙滩上,脚下的沙石,有些扎脚。大海,从无际的天边,涌过来,抚过去,奔向岸边,卷起千堆白雪,一浪,又一浪……虽说每片海都连着同一片天,但它们却是不同的——每片海,都有每片海的性格。     

红树林——独一无二的生态名片

第一次听到红树林这个名字,不知道为什么,心里竟有一种说不出的异样感觉。美好、明媚、光鲜,还有一点童话般的神秘色彩。多年之后,来到北部湾的合浦山口红树林,一眼望去,不禁在心里长长地“啊”了一声。目光从天水一色的远处往回收缩,但见海岸线那蜿蜒的潮间带,飘缈地悬浮着一片氤氲之气,走近时,那氤氲之气便渐渐幻化成了一大片密密匝匝的树林。粗略一看,树不高却枝繁叶茂,干不粗而稳健坚实。一丛丛,一片片,密不透风,横无际涯。我脱口而出,真是一片海上的森林啊!朋友说,现在是退潮,等涨潮时,它又是海底的森林了呢。     

五月石榴花

那日闲来无事,去了附近的公园。正值多雨季节,灰蒙蒙的天空中飘着游丝似的细雨,星星点点。 老远,就看到绿色的园子深处,一株高大的石榴树花开得正艳。墨绿色的叶子油光发亮,经过雨水的冲洗,越发显得绿意盎然,一朵朵一簇簇,像一把把火炬,又如一盏盏红灯笼。花瓣娇艳欲滴,花蕾含羞娇媚。细雨蒙蒙中,园子升腾着袅袅雨雾,石榴树笼罩在一片白茫茫之中,宛如一位仙女在散花。     

秋游灯台架

秋高气爽,远离尘世的纷扰与喧嚣,与三五好友一起畅游山水,亲近自然,是件很惬意的事情。 一个深秋的早晨,微微有些薄雾。驱车缓缓行驶在舞钢石漫滩水库湖滨大道上,入眼的是一片空蒙,心里顿时澄净起来。湖水平静如镜,岸边挺拔秀丽的杨树林,稀疏却错落有致,树下绿草如茵。湖中的小岛与树木的倒影在湖水中连成一片,间或听见几声鸟鸣,清风拂来,风景如画,犹如在朦胧的梦境。     

揭开“魔术铁帽”的秘密

37年前,我从偏僻的雪峰山脚的隆回县,招工来到远离家乡千里以外的中南石油局第四普查勘探大队,当了一名钻工,从此开始了地质工作生涯。当时,地质队流行一句顺口溜：＂伟大的电工,万能的钳工,舒服的车工,倒霉的钻工。＂因为钻工的工作非常辛苦,实行24小时3班倒。几年后,1980年,我来到地质部418地质队地质组从事勘探工作。没想到,这一做就是一辈子。     

新疆天池

天池位于新疆阜康县境内的博格达峰下的半山腰,东距乌鲁木齐110 km,海拔1 980 m,是一个天然的高山湖泊。湖面呈半月形,长3 400 m,最宽处约1 500 m,面积4.9 km2,最深处约105 m。湖水清澈,晶莹如玉。四周群山环抱,绿草如茵,野花似锦。有"天山明珠"盛誉。天池属高原冰碛湖。地学研究认为,第四纪冰川以来全球气候有过多次剧烈的冷暖运动,20万年前,地     

住房和城乡建设部仇保兴副部长在农村危房改造专题座谈会上的讲话

<正>(2009年12月18日)刚才,财政部、发改委的同志都讲得非常好。扩大农村危房改造试点工作的形势很好。第一,成效明显。今年是第一年,工作部署稍微晚了一些,但试点工作进展顺利,预计全年的任务可基本完成,成效非常明显。第二,前景良好。农村危房改     

红色的国庆节

金菊吐艳,枫叶飘红,又是一年国庆节。红红的国旗,红红的灯笼,红红的衣服,红红的中国结。红色充满了喜庆,充满了热情。红色的国庆节,全国上下,万众欢腾,喜悦的表情写满人们的脸上。 ＂红＂,形声字,从糸（表示与线丝有关）,工声。《说文》这样解,＂红,帛赤白色也。＂白居易《忆江南》有诗句：＂日出江花红胜火＂,可见红色是生机勃勃的。     

民生,重于泰山——鞍山市东鞍山铁矿排岩场矿山地质环境综合治理工程正式开工

民生,乃百姓的基本生计。孙中山先生说,民生就是人民的生活——社会的生存,国民的生计,群众的生命。改革开放以来,我国的民生得到了极大的改善。但是,随着社会快速发展,涉及民生问题也愈加复杂,尤其是社会普遍关注的生态环境问题,更是愈来愈凸显。     

开化县深化六种意识，推进国土资源管理再上新台阶

一是切实深化忧患意识。十八大对今后一个时期国土资源工作推进提出了新任务新要求。会议强调。2013年,在清醒认识形势的同时,要顶住压力,迎难而上,继续在保发展、保资源、保民生上下功夫,从解决自身工作不足着手,在破解要素、健全机制上做文章,努力开创国土资源管理新局面。二是切实深化创新意识。要求进一步解放思想,勇于创新,坚决破除因循守IB、求稳怕难的思想,着力破解建设和发展中遇到的难题。坚持与时俱进,善治善为,努力提升决策的科学性、政策的实用性和服务的有效性,从而走出一条具有开化特色的国土资源管理创新之路。三是切实深化大局意识。会议强调,县国土资源工作要服从和服务于全县工作大局,要坚决对县委县政府的决策部署,确保政令畅通,步调一致。着力抓好全县重大项目的落地,切实为推进全县经济社会发展提供强有力的土地要素保障。四是切实深化责任意识。     

大巴山构造带东段秭归盆地侏罗纪沉积充填过程及其构造演化

位于大巴山构造带东段秭归盆地较为完整地保存了侏罗纪地层,其沉积和构造演化过程可划分两个不同阶段,即早侏罗世受西北缘断裂走滑控制的伸展阶段和中、晚侏罗世受东部黄陵地区抬升挤压消亡的阶段。下侏罗统香溪组底部砾岩表明侏罗纪盆地开始形成。盆地北缘的砾岩较厚,主要形成于冲积扇和辫状河体系,并在其砾石中发现化石砾石,显示距离物源区较近。盆地东南部和南部砾岩较薄,形成于曲流河沉积环境。古水流和碎屑物源分析表明,盆地早期沉积物主要来自于盆地北部神农架地区。中侏罗统泄滩组和陈家湾组以湖泊相沉积为主。上沙溪庙组和下沙溪庙组为较成熟的曲流河沉积,沉积砾岩中无灰岩和燧石,几乎全部为泥岩砾石。上侏罗统遂宁组和蓬莱镇组虽然也为曲流河沉积,但其河床砂岩底部再次出现了灰岩、燧石等砾石。另外,中侏罗统上部和上侏罗统古水流方向为自东向西,指示物源区变为盆地东部的黄陵背斜地区。盆地的沉积充填特征和盆地西北缘具左行走滑运动的高桥断裂,以及北部南倾的多条逆断层表明断层对盆地形成的主控作用。黄陵背斜地区后期的不断抬升对秭归盆地有重大影响,持续的抬升可能导致盆地消亡。秭归盆地的沉积充填和演化过程,是对大巴山构造带东段“燕山运动”的响应。     

准噶尔盆地克拉玛依油田三叠系克下组洪积砾岩特征及洪积扇演化

通过岩心观察,将克拉玛依油田三叠系克下组砾岩分为杂基支撑角砾岩(砾石成分同基岩)、弱胶结砾岩(严格意义上未胶结成岩)、泥质杂基支撑砾岩、砂砾质支撑砾岩和分选极好的细砾岩几种类型。通过岩心岩石特征与现代洪积扇沉积物特征对比,确定了每一类砾岩的形成环境。克下组沉积早期,气候干旱,洪积扇为干旱型,可与现代扎伊尔山山麓洪积扇(堆)沉积物特征相类比。克下组沉积后期气候变得潮湿,洪积扇类型逐渐转变为以河流作用为主,可与阜康市白杨河洪积扇沉积物特征相类比。克下组洪积扇在垂向上为向扎伊尔山后退的沉积序列。     

黑龙江东部林口地区下白垩统穆棱组 砾岩的成因及其意义

大三江地区是中国东部重要的油气资源接替区,早白垩世时期该地区曾为一个统一的盆地,之后盆地遭受破坏分解。如何确定当时的盆地边界进而恢复盆地原型,是该地区亟待解决的关键地质问题之一。前人对盆地边界的确定大都以理论推测为主,缺乏实际证据。本次工作在黑龙江林口地区发现一套穆棱组底部砾岩,对砾石进行成分及分选特征、沉积特征等的统计与分析,结合古水流恢复和地震解释资料,认为该套砾岩整体为冲积扇相,以河道砾岩沉积和漫流砾岩沉积为主,物源主要来自盆地西部的张广才岭。结合地震资料分析,认为研究区穆棱组时期的沉积模型为冲积扇相向滨浅湖亚相的直接过渡。本研究不仅为大三江盆地西部边界的确定提供了直接证据,同时也为该地区今后的油气勘探指明了方向。     

New Insights into the Late Triassic Nadigangri Formation of Northern Qiangtang,Tibet, China: Constraints from U‐Pb Ages and Hf Isotopes of Detrital and Magmatic Zircons

We report here U-Pb age and in situ Hf isotopic results for detrital and magmatic zircons from one conglomerate and four tuffite samples from the Late Triassic Nadigangri Formation across the North Qiangtang depression, Tibet. Coupled with previously published data in the region, this paper proposes new insights into the geochronological framework for the Nadigangri Formation. The deposition ages of tuffite from top to bottom in the Woruo Mountain, Quem Co and Dongqu River, are 203 Ma, 226 Ma, 221.5 Ma and 221.1 Ma, respectively. The detrital zircons yield a younger cluster of ages of 201.5–225 Ma from the conglomerate of the Quem Co Formation. The Late Triassic Nadigangri Formation defines a temporal range approximately between 201 and 225 Ma(Norian-Rhaetian), including three predominant groups of 220–225 Ma, 210–217 Ma and 201–205 Ma, which correspond with the three main rifting episodes of initial rifting, further rifting and final rifting. Positive εHf(t) value and low model ages in younger detrital zircons suggests a juvenile character. However, the Hf isotopes of magmatic zircons display the presence of reworked ancient crust with 1.1–1.8 Ga. These results provide strong constraints not only on the temporal range of the Late Triassic Nadigangri Formation, but also on the onset of the Qiangtang Mesozoic rift basin.     

一种新的造山类型—江苏南部茅山叠覆造山

褶皱造山，推覆造山，火山造山，断块造山等造山类型已屡人们所认识。江苏南部茅山等地存在一种新的造山类型滑覆叠置造山，简称叠覆造山，其概念是：构成原始山体的岩片沿其底部拆离面滑移，并脱离母体叠覆于异地低洼处形成新的山体，多个岩片可依次滑覆呈反序叠置。以茅山叠覆造山为例，论述了叠覆造山的特征，构造要素，形成机制及叠覆构造与推覆构造之区别     

四川大邑-汶川地区侏罗-第三系砾岩特征及沉积环境

龙门山中南段四川大邑、崇州、都江堰、汶川地区，侏罗系、白垩系、第三系发育良好，划分为侏罗系白田坝组、千佛岩组、沙溪庙组、遂宁组、莲花口组及五龙沟砾岩一组至三组；白垩系天马山组、夹关组和灌口组；下第三系名山组和上第三系（上部包括部分第四系）的大邑砾岩等岩石地层单元。各个地层单元中几乎都有砾岩沉积。概述了该区砾岩的时空分布及特征，按沉积环境将砾岩划分为冲积扇砾岩、河道滞留砾岩及湖滨砾岩等，最后讨论了物源区及其时空演化。     

溱潼凹陷北坡阜三段碎屑岩储层特征

基于24口井岩心铸体、岩石薄片的测试数据及砂岩微观结构的观察，分析了溱潼凹陷北坡阜三段碎屑岩储层的岩石学特征、不同沉积微相砂岩的物性特征、储集空间特征、成岩作用及成岩演化特征。研究结果表明本区东西部阜三段储层在沉积微相、岩石学特征、储集空间、成岩特征等方面都存在着一定的差异。指出较好的储层位于本区莫庄北部的上下砂组及茅山北部、叶甸—边城西北部的上砂组中；同时认为次生孔隙在纵向上具有一定的分带性，其主要分布在埋深2350m～2880m。最后对本区储层进行了评价和预测．     

Facies descriptions and associations in ancient reworked (?transgressive) shelf sandstones: Cambrian and Cretaceous examples

Preferred facies trends in ancient shallow-marine sediments have been determined by Markov-chain and substitutability analyses of detailed sections measured in Lower Cambrian outcrops in the Southern Canadian Rocky Mountains (St Piran Formation, 600 m of vertical section; Fort Mountain Formation, 500 m of vertical section), and in a Cretaceous subsurface reservoir in south-central Alberta (Viking Formation in the Garrington Field: 69 cores). Those sections with more defined cycles are interpreted to result from progradation of shelf-ridge sands and gravels; examples with less defined order originated as inter-ridge deposits, in zones with complex palaeoflows and in areas of subdued palaeotopographic relief. The highest degree of facies organization (> 80% significant facies transitions) occurs in the Cretaceous Viking Formation sandstone and conglomerate ridges, interpreted to have had abundant sediment supply, water depths between fair- and storm-weather wave-base, and a strong littoral current system. A moderate degree of facies organization (70% significant facies transitions) occurs in the inter-ridge deposits of the Cambrian Fort Mountain Formation, interpreted to have had a variable sediment supply, water depths above storm-weather wavebase, and a variable, oscillating tidal current system. A poor degree of facies organization (< 45% significant facies transitions) occur in the ridge deposits of the Cambrian Fort Mountain and St Piran formations and in the inter-ridge deposits of the Cambrian St Piran and Cretaceous Viking formations. This facies disorganization occurs in sites where there was continuous and rapid subsidence (Cambrian) or in areas of subdued seafloor relief with complex current systems (Cretaceous). The pattern of facies relationships also varies. Relatively short linear patterns occur in all of the shelf-ridge deposits. This contrasts with the inter-ridge deposits in which there are long linear patterns or complex ring structures, interpreted to result from complex palaeoflow patterns in areas of subdued seafloor topography. Various statistical techniques (including Markov-chain and substitutability analyses) can aid the interpretation of very complex lithological successions, as shown by the shelf sandstones and conglomerates examined in this study.     

黑龙江东部林口地区下白垩统穆棱组砾岩的成因及其意义

大三江地区是中国东部重要的油气资源接替区,早白垩世时期该地区曾为一个统一的盆地,之后盆地遭受破坏分解。如何确定当时的盆地边界进而恢复盆地原型,是该地区亟待解决的关键地质问题之一。前人对盆地边界的确定大都以理论推测为主,缺乏实际证据。本次工作在黑龙江林口地区发现一套穆棱组底部砾岩,对砾石进行成分及分选特征、沉积特征等的统计与分析,结合古水流恢复和地震解释资料,认为该套砾岩整体为冲积扇相,以河道砾岩沉积和漫流砾岩沉积为主,物源主要来自盆地西部的张广才岭。结合地震资料分析,认为研究区穆棱组时期的沉积模型为冲积扇相向滨浅湖亚相的直接过渡。本研究不仅为大三江盆地西部边界的确定提供了直接证据,同时也为该地区今后的油气勘探指明了方向。     

Provenance of the Pythian Cave conglomerate,northern California: implications for mid-Cretaceous paleogeography of the U.S. Cordillera

Provenance analysis of middle Cretaceous sedimentary rocks can help distinguish between disparate tectonic models of Cretaceous Cordilleran paleogeography by establishing links between sediment and source, as well as between currently separated basins. This study combines new detrital zircon age data and compositional data with existing provenance data for the Pythian Cave conglomerate, an informally-named unit deposited unconformably on the eastern Klamath Mountains, to test possible correlations between the Pythian Cave conglomerate and similar-age deposits in the Hornbrook Formation and the Great Valley Group. These provenance results indicate that restoring Late Cretaceous clockwise rotation of the Blue Mountains adds a significant sediment source for Cretaceous basins previously associated with only the Klamath Mountains (e.g., the Pythian Cave conglomerate and Hornbrook Formation) or a combined Klamath-Sierran source (e.g., Great Valley Group). Comparison of the Pythian Cave conglomerate with the Klamath River Conglomerate and the Lodoga petrofacies suggests that the Pythian Cave conglomerate system was separate from the nearby Hornbrook Formation and was probably related to the Lodoga petrofacies of the Great Valley Group.