包体模型应力集中的定量研究

本采用二维弹性介质圆形包体模型,运用连续介和学理论求解出包体内外的应力场、位移场、平均应力、最大剪应力以及能量密度的解析解,从而讨论了硬、软件包体的应力集中特征;     

砂岩型铀矿床上方氧的分布

本文以层间氧化带型铀矿床为例,根据各层间分带中铀存在的形式和状态、铀成矿的条件及各阶段相应的化学变化及气体扩散所引起的氧浓度梯度变化,对砂岩型铀矿床上方氧的分布模式做了初步探讨。通过在已知矿床上取得良好效果的应用实例,指出野外工作时应注意的问题。认为该法在寻找可地浸砂岩型铀矿床中不失为一种简单易行的方法。     

粘土矿物对油气层的损害及防治研究

粘土矿物的分散运移、膨胀以及酸敏导致沉淀物的生成,都严重地造成了地层孔隙的堵塞,对油气的三次开采造成了很大的危害。本文从粘土矿物的晶体结构入手,对粘土矿物损害油气层的机理进行了初步探讨,并对粘土矿物损害地层的三种方式提出了有效的防治措施,并通过室内实验,找出了有效的合理配方。     

Dissolution rates of metals in Fe oxides: implications for sampling ferruginous materials with significant relict Fe oxides

A study of the pattern of dissolution of synthetic and natural Fe oxides in 6 M HCl indicates that the rate of element release from synthetic Fe oxides is strongly influenced by mineralogy and the level of element incorporation. Synthetic maghemite (γ-Fe₂O₃) samples are subject to much more rapid dissolution than goethite (FeOOH) and hematite (α-Fe₂O₃). In samples dominated by hematite and maghemite, Cu, Zn and particularly Pb, in comparison to Fe, are preferentially released during the early stages of dissolution. Similar patterns are apparent from the dissolution of hematite- and maghemite-dominated samples derived from natural gossan. Comparison of XRD scans with data from the dissolution of natural gossan samples transformed by incremental heating to hematite- and maghemite-dominated assemblages suggests that the degree of crystallinity may also be a significant factor in the release of elements incorporated in the Fe oxides. Ferruginous materials made up of varying proportions of goethite, hematite, maghemite, kaolinite and quartz are important sampling materials in a range of regolith environments. These are products of complex chemical and mechanical mobilization over long periods of geological time. If the patterns of Fe oxide dissolution in 6 M HCl and the release of incorporated metals reflect stability in such weathering regimes, knowledge of the retention characteristics of incorporated metals in different Fe oxide phases, as indicated by this study, will be useful in the planning and interpretation of geochemical surveys in such regions.     

青岛市环境氡浓度分布规律与预测方法研究

通过研究青岛市环境氡的分布规律,认为青岛虽然处在崂山花岗岩上,但由于土壤层不厚,土壤储气条件不好以及氡浓度很低的海风作用,青岛土壤氡浓度和空气氡浓度都不高。提出了一种新的土壤氡浓度预测方法,即利用现有地质资料中铀的含量评价环境氡浓度水平。     

Persistent organochlorine residues in sediments of Hong Kong Victoria Harbour and Xiamen Western Bay

INTRODUCTIONOrganochiorine(OC)compounds,suchaspolych1orinatalbiphenyIsrpCBs),hexachlorocycohexane(HCH)andDDThaveentetalmarineenvirorimentSthI0ughatmospherictransport,estuarinerunofTcoastalwaterdischarge,andsoon.InspiteoftheastriCtion0rbanonOCsusageinmostcountriesformanyyears,OCnsiduescanstillbefoundatconsiderableleveIsinvari0usmarineaservotrisuchasseaWhtef,maforor-ganismandtaltrit.ooinrnarineenvirOrimenthavedrawnmuchattenti0ntheuse0ftheirubiquity,persistenceandt0xidty.Marinesedtri…     

海洋初级生产力遥感与GIS评估模型研究

本文探讨了利用遥感和地理信息系统技术获取海洋初级生产力的基本原理和方法。根据表层海水叶绿素遥感信息反演模型。介绍了三种基于表层海水中叶绿素浓度的海洋初级生产力算法。根据这三种算法,利用ＧＩＳ建模技术,推导了具有空间特征的海洋初级生产力的ＧＩＳ理论估算模型,以及这种模型的求解方法。     

云南潦浒第三纪褐煤盆地白泡煤成因特点

云南潦浒褐煤盆地白泡煤在煤层结构、煤岩组分及物理化学性质等方面有着显著的特点，对其分类地位和成因一直存在较大争议作者运用煤岸学、煤化学方法及电子显微技术（选区电子衍射SAD及暗场DF方法）对白泡煤显微组分特征、降解组分超微结构和腐植酸组成等做了系统对比研究。研究结果进一步验证了潦浒白泡煤是以草本植物为主体的草本—木本植物组合体在中位沼泽环境中形成的推论。     

218Po法测氡对甘肃疏勒河断裂带中段的稳定性研究

本文以疏勒河断裂带中段遥感地质特征及甚低频电磁异常特征为基础,通过测定断裂带上部地表的氡射气浓度,对疏勒河断裂带中段的稳定性进行了分析和评价。结果表明,疏勒河断裂带中段是一条较为稳定的断裂。     

柠檬酸—硝酸铝溶剂溶解磷灰石中全磷

试验了用柠檬酸＿Ａｌ（ＮＯ３）３溶液做溶剂分解磷灰石的预处理方法。结果表明，在微沸加热６ｍｉｎ条件下，质量浓度分别为３２ｇ／Ｌ和９０ｇ／Ｌ的柠檬酸＿Ａｌ（ＮＯ３）３混合溶剂可以有效地分解磷灰石，测定全磷的回收率＞９９％，与王水溶样结果相符，并用测定磷灰石标样中全磷进行验证，说明方法可靠。