沂水崔家峪玻璃用石英砂岩矿地质特征

沂水崔家峪玻璃用石英砂岩矿床赋存于早寒武世李官组砂岩段中．呈近水平的层状产出。因其岩石坚硬．矿体呈环山的平台状分布。矿体厚度大，矿石品级高，特级品矿石二氧化硅平均含量98．47％，铁杂质平均含量0．043％(选矿后，铁杂质含量可降至0．02％以下)，为一优质玻璃硅质原料矿床。矿石为细一中粒石英砂岩，粒度以中粒为主，矿石由碎屑颗粒和胶结物组成，碎屑成分含量为97％～98％．其中绝大部分是石英颗粒．具典型的砂屑结掏。该矿床属滨海陆源沉积矿床。     

The Lagoon of Venice： geological setting,evolution and land subsidence

The paper deals with the geological setting, history and subsidence of the Venetian Plain. Major attention is paid to the Pleistocene-Holocene stratigraphic sequence in the Lagoon of Venice, in relation to its origin that datesback to 6-7 kyr BP. Geological land subsidence, which played an important role in the origin and the evolution of the lagoon, and anthropogenic subsidence, that has recently assumed a major importance for the Venetian environment, are discussed. Considering also the sealevel rise, 23 cm loss in land elevation has occurred in the last century, leading to increased flooding events and environmental problems that require protective works.     

一般回路形式下的暗条电流平衡高度

Ｋｉｐｐｅｎｈａｈｎ－Ｓｃｈｌｕｔｅｒ模型回路和Ｋｕｐｐｅｒｕｓ－Ｒａａｄｕ模型回路是暗条电流回路的两种极端形式，本文则从一般回路形式来研究暗条电流与暗条高度的关系。结果发现：当暗条电流与活动区磁场作用的Ｌｏｒｅｎｔｚ力方向与暗条重力方向相同时，流入活动区光球层的电流越大，其在暗条电流中所占的比例越大，暗条越稳定。     

贵州织金煤矿区龙潭组岩石特征及其意义

织金矿区含煤地层为上二叠统龙潭组,含主要可采煤6层.煤系地层以含玄武岩屑、海绿石为特征的5类碎屑岩夹碳酸盐岩,水平、沙纹、波状层理发育,煤系中稳定的灰岩、硅铁质灰岩标志层较多,有利于煤层的划分与对比,并产丰富的动植物化石及碎块.属海、陆交替环境下的标型海陆交互相沉积.     

河西走廊东部地区早二叠世地层研究的新认识

本文讨论了河西走廊东部地区早二叠世地层研究的有关问题,认为甘肃山丹青羊泉下二叠统剖面是北祁连山—河西走廊地区的重要代表剖面之一。以该剖面研究为依据,提出走廊东部地区下二叠统的进一步划分方案,分析该区早二叠世地层岩性特征差异的原因,并与走廊西部地区同期地层进行对比,进一步明确了大黄沟组的含意。     

浅析宁波盆地膏盐地层的时代──兼对“宁波盆地北部的长河群”之时代质疑

宁波盆地地下揭示的一套包含暗色膏硝质泥岩、泥质白云岩在内的紫红、灰紫色泥岩、棕褐色砂砾岩、细砂岩和玻屑凝灰岩的地层，均称方岩组，内含膏盐并具油色显示。对其时代有早、晚白垩世和早第三纪之认识，笔者从70～90年代地质工作中所获化石分析认为，虽然宁波盆地这一层位含化石不丰，但从分布及数量上比较，相对占优势的应该是孢粉和植物化石，其时代意见也较为一致，指示为早白垩世。     

致密碎屑岩储层裂缝和产能预测的单井建模——以新场气田沙溪庙组为例

近年来，利用三维地震资料进行致密碎屑岩储层裂缝和产能的识别预测取得了一些进展，而这之中最重要也最基础的是单井裂缝和产能的建模工作。本以新场气田沙溪庙组致密储层为例，详细介绍了综合运用岩芯资料、测井资料和录井资料进行裂缝和产能单井建模的方法，为利用三维地震资料建立裂缝和产能的灰色遗传过程识别模式打下了良好的基础。     

南湾，我心中的湖

这些年虽然游过西湖，东湖，洞庭湖之类的名湖胜水。但游过之后，心情总缺少被大自然过滤后的那份清爽，在我心中都不及家乡南湾湖的自然纯净，比较起来南湾湖更多了份温和，亲切之感。这大概是它囤积了我从小到大最轻松，愉快的心情之故吧。南湾湖是一水库的别名，曾被国家水利部批准为第一批水利风景区，在贤山坳谷之间，筑坝     

ENERGY FLOW OF BELIAMYA AERUGINOSA IN A SHALLOW ALGAL LAKE, HOUHU LAKE （WUHAN, CHINA）

The energy budget ofBellamya earuginosa in a shallow algal lake, Houhu Lake (Wuhan, China) was investigated by the measurement of flesh production (32.8 kJ/(m²·a)), egestion (337.7 kJ/(m²·a)), metabolism (246.7 kJ/(m²·a)), and estimation of excretion (21.4kJ/(m²·a)). The net growth efficiency of the species is about 10.9%, which accords with the generally reported value for gastropods. In addition, the relationships between starvation respiration (R, mgO₂/(Ind·d)), body weight (Wd, mg in dry wt) and temperature (T, °C) were also determined. The regression equationR=0.044Wd ^0.537 e ^0.061T was obtained by the least square method, The measured SDA of the species is 26.51% of its gross metabolism. Project No. 3960019 and 39430101 supported by NSFC and also a granted for the East Lake Ecological Experimental Station, CAS, Wuhan.