地震数据反演方法确定煤层厚度：在英格兰贝尔沃煤田的试验     

Gang  T 顾文浩 《国外煤田地质》1998,(2):37-44

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喜马拉雅的结构和构造——关于地球物理观测的概略小结     

P.莫纳  F.T.武 《云南地质》1997,(Z1)

喜马拉雅地区的主要结构和构造与岛弧的相似 ,但被轻的印度陆壳 (不是洋壳 )消亡引起的作用所改造。恒河盆地下的前第三纪基底的表面形态与海洋深海槽的表面形态相似 ,而中印高原是外部地形隆起的追忆记载。印度地盾上的重力异常与朝向海洋的岛弧的重力异常相似 ,并具有岩石圈在深海沟处向下弯曲和在外缘隆起处向上挠曲的模式。断裂面的分解式说明印度岩石圈确实弯曲 ,然后以低角度向喜马拉雅山俯冲。来自印度和岛弧的有关这方面的资料说明了同一个现象。大西洋和印度洋的海洋地球物理资料 ,可以对最后 70 Ma的印度和欧亚地质史加以恢复。一种急剧减缩作用 ,速率大致为 1 0 0 mm/ a。大概在 40 Ma前接近或稍晚于地质上所推定的碰撞时间。印度向巨大深处的消亡作用假定为漂浮的大陆壳所阻碍。印度地壳的浮力可能导致收敛速率的降低 ,但不是停止。虽然与新断裂的产生以及印度板片一个个地向上推置 ,形成山脉带有关 ,但地震记录表明 :沿低角底断裂面 (可在主边界断裂上或紧邻主边界断层 )的俯冲断裂作用 ,使敛合作用继续发生。重力异常与这种解释是一致的。假若喜马拉雅是由印度次大陆古老板片北缘的断裂作用和仰冲板片所建立起来的 ,那么与重力资料说明有 30 0— 40 0 km的缩短是一致的。在喜马拉雅山收缩  相似文献   

Stratigraphy of Upper Cretaceous──Paleogene deposits of northwestern Zeya──Burya sedimentary basin     

T.V. Kezina  N.D. Litvinenko 《东北亚地学研究》2007,(2)

In the northwestern Zeya──Bureya sedimentary basin, the authors studied coal deposits, including Ivanovsko-Erkovetskyu brown coal square on which is worked off largest Erkovetsky field of brown coal, extending to south flank of the Mesozoic──Cenozoic Belogor'e depression. The verified stratigraphic scheme of the coalfield sedimentary sequence is substantiated by palynological data on core samples from 18 boreholes sampled in the course of detailed prospecting and by paleobotanical analysis of sections in the Yuzhnyi sector of the coalfield. Sections of the Erkovtsy, Arkhara Boguchan, and Raichikha brown-coal mines are correlated. Stratigraphic subdivisions distinguished in the studied sedimentary succession are the middle and upper Tsagayan subformations (the latter incorporating the Kivda Beds), Raichikha and Mukhino formations.  相似文献   

Late Cenozoic Tectonic Deformation in the Dongsha Islands and Adjacent Sea Area   总被引：3，自引：0，他引：3  

吴时国  刘展  王万银  郭军华  T.Lüdmann  H.K.Wong 《中国海洋湖沼学报》2003,21(4):377-388

Dongsha Island and the adjacent sea area locate at the northern continental margin of the South China Sea (SCS), and is connected to the east by the Manila Trench. Analyses of seismic stratigraphy and gravity, magnetic and drilling wells data led to the discovery of three post-fault sequences (Ⅴ, Ⅵ, Ⅶ). Extensive tectonic uplift, magma activity and erosion occurred in Dongsha Island and the adjacent area, where most of the faults in the northeastern SCS were still active during Pliocene and Quaternary. Two groups of faults trending NEE and NW were developed during Late Cenozoic. We conclude that three important tectonic movements, especially Dongsha movement(4.4 - 5.2 Ma) and Liuhua movement (1.4 - 1.89 Ma), controlled the structural framework in the Dongsha rise; whose deformation in the east is stronger than that in the west and whose stress field variation suggests that the tectonic uplift in the study area contributed to magmato-tectonic events correlated to the main collision phases between the East China and Taiwan 5 - 3 and 3 - 0 Ma ago.  相似文献   

The Global Boundary Stratotype Section and Point （GSSP） for the base of the Hirnantian Stage （the uppermost of the Ordovician System）   总被引：1，自引：0，他引：1  

Xu Chen Jiayu Rong Junxuan Fan Renbin Zhan Charles E. Mitchell David A. T. Harper Michael J. Melchin Ping＇an Peng Stan C. Finney Xiaofeng Wang 《《幕》》2006,29(3):183-196

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广域差分GPS技术     

Muell.  T 李学逊 《武测译文》1995,(2):24-29

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受应力岩石吕由物理─化学反馈引起的分异构造     

Dewers  T 胡志勇 《世界地质》1993,12(2):110-119

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地热勘查技术进展     

迈达夫  T  良可 《国土资源信息化》1999,(4):27-29

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一种新型下水道扫描技术的开发     

Iseley  T 刘宝林 《岩土钻凿工程》2000,(2):151-153

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中国某些铁陨石的化学分类     

王道德  D.J.麦尔文  J.T.沃森 《地球化学》1983,(2):109-120

Based on structural observations and the concentrations of Cr, Co, Ni, Cu, Ga, Ge,As, Sb， Re, Ir and Au by neutron-activation analysis we have classified 14 Chinese iron meteorites. Thirteen are members of the large groups IAB, IIICD, IIICD,IIIAB and IVA.Leshan is an ungrouped iron meteorite that falls within the IIE field on some elementNi diagrams, but is distinctly outside this .fiel on plots of Cu, W, and Ir vs. Ni; it is very similar in Composition to Techado,another ungrouped iron. The high Cu content of Leshan is consistent with other evidence indicating that Cu is a valuable parameter for classifying, iron meteorites. IIICD Dongling appears not to be a new meteorite, but to be paired with Nantan; Dongling was recovered about 50 km from the location of the Nantan shower. Yungning is highly oxidized; we assign it to group LAB but cannot rule out IIICD. IVA-An Longchang has many characteristics of IVA irons, but has been remelted, prebably in a terrestrial setting, Five irons belong to group IVA, a remarkably large number. Three are identical in Composition, and we suspect that the two from Hubei, Guanghua and Huangling, are paired. Thus this set of 14 irons ineludes 12 independent fall.  相似文献