对二郎坪群火神庙组物质组成的质疑与再认识

经研究证明，前人建立的二郎坪群火神庙组确有少量的亚碱性双峰式火山岩。这些火山岩零星地分布在几个地区，走向不连续，出露宽度一般为数百米。构成该组主体的是一条规模宏伟的侵入岩带，其岩石组合为辉长岩－闪长岩－石英闪长岩－斜长花岗岩－花岗岩，总体上表现为正序岩浆演化序列。这些侵入岩普遍经历了三个阶段的变形变质作用，即第一阶段为韧性变形；第二阶段为静态重结晶；第三阶段为带状褶劈理，表现了复杂而漫长的构造演化史。     

Sedimentary evidence for deforming bed conditions associated with a grounded Irish Sea glacier,southern Ireland

Along the south coast of Ireland, a shelly diamict facies, the Irish Sea Till, has been variously ascribed to subglacial deposition by a grounded Irish Sea glacier or to glacimarine sedimentation by suspension settling and iceberg rafting. Observations are presented here from five sites along the south coast to directly address this question. At these sites, sedimentary evidence is preserved for the onshore advance of a grounded Irish Sea glacier, which glacitectonically disturbed and eroded pre‐existing sediments and redeposited them as deformation till. Recession of this Irish Sea glacier resulted in the damming of ice‐marginal lakes in embayments along the south coast, into which glacilacustrine sedimentation then took place. These lake sediments were subsequently glacitectonised and reworked by overriding glacier ice of inland origin, which deposited deformation till on top of the succession. There is no evidence for deposition of the Irish Sea diamicts by glacimarine sedimentation at these sites. The widespread development of subglacial deforming bed conditions reflected the abundance of fine‐grained marine and lacustrine sediments available for subglacial erosion and reworking. Stratigraphical and chronological data suggest that the advance of a grounded Irish Sea glacier along the south coast occurred during the last glaciation, and this is regionally consistent with marine geological data from the Celtic Sea. These observations demonstrate extension of glacier ice far beyond its traditional limits in the Celtic Sea and on‐land in southern Ireland during the last glaciation, and remove the stratigraphical basis for chronological differentiation of surficial glacial drifts, and thus the Munsterian Glaciation, in southern Ireland. Copyright © 2001 John Wiley & Sons, Ltd.     

中国大陆地壳垂直运动梯度图的编绘

本文介绍了一种量化地壳垂直运动速度梯度的方法，并用此方法编绘了中国大陆现代地壳垂直运动速度梯度图。     

用速率面拟合法进行地壳水平形变模型的研究

速率面拟合法已应用于地壳垂直形变模型分析，本文利用这一曲面拟合理论研究了地壳水平形变模型，详细推导了相应的公式，并进行了模拟试算。     

Embankment deformation analyzed by elastoplastic damage model coupling consolidation theory

The deformation, of embankment has serious influences on neighboring structure and infrastructure. A trial embankment is reanalyzed by elastoplastic damage model coupling Blot＇ s consolidation theory. With the increase in time of loading, the damage accumulation becomes larger. Under the centre and toe of embankment, damage becomes serious. Under the centre of embankment, vertical damage values are bigger than horizontal ones. Under the toe of embankment, horizontal damage values are bigger than vertical ones.     

沂沭断裂带垂直形变与断层活动特征分析

利用跨断层短水准资料分析了沂沭断裂带断层活动特征，结果表明：NNE向的沂沭断裂带与NW向断裂活动性质有所不同，沂沭断裂带主要为压性逆断活动，北西向断裂带为张性正断活动，与地质考察结果基本一致。此外，沂沭断裂带及北西向断裂带都具有分段活动的特点。     

模拟堆载作用的黄土边坡土体变形机理试验

通过固结不排水剪试验,研究了堆载作用下不同深度、含水量和围压的原状黄土的变形和破坏特征,并从黄土的微观结构角度分析了产生这一现象的原因,结合黄土边坡特殊的工程地质条件,分析了堆载作用下黄土边坡土体的变形破坏过程。试验结果表明,不同深度、含水量和围压的原状黄土的应力应变曲线和抗剪强度具有不同的特征;特殊的工程地质条件,使黄土坡体的某些部位形成了堆载作用下不利于黄土材料强度保持的含水量和围压的组合,导致了这些部位黄土的变形破坏,进而诱发坡体的变形破坏。     

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