搜索结果: 121-135 共查到“大地构造学”相关记录180条 . 查询时间(0.463 秒)
本文利用热导率、热容、热膨胀系数等参数随温度变化的经验表达式，在板块模型的基础上用隐式有限差分方法解非线性热传导方程，并利用北太平洋和北大西洋海底年龄与水深数据反演了大洋岩石圈厚度与底界温度等参数，结果表明大洋岩石圈的厚度在105 km左右，岩石圈底界温度在1450℃左右，这与Stein等用全球大量数据反演的结果一致.将变参数模型用到岩石圈拉张成盆的模拟中，结果表明当考虑岩石圈热参数随温度变化之后...
目前很多文献基于弹性力学假设，以小形变、均匀应变场为前提，利用GPS资料建立了中国大陆块体的整体旋转与均匀应变模型，并对模型进行了相关检验.但上述对模型的检验侧重从模型的拟合效果上进行分析和比较，忽略了对模型的适用性和假设条件合理性的检验.实际上，不同块体由于自身构造和外部条件的不同，其运动状况与应变状态并不完全一致，模型的适用性需进一步的验证.本文提出了两步检验方法对所建立的模型在中国大陆6个主...
华南师范大学自然地理学课件第一章地质 地壳运动与地质构造。
Orogenic to Non-Orogenic Magmatic Events: Overview of the Late Variscan Magmatic Evolution of the Alpine Belt
Non-Orogenic Magmatic Events Late Variscan Magmatic Alpine Belt
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2009/7/8
The Alpine belt comprises several pieces of Pre-Mesozoic basement, which have received various imprints of the successive Paleozoic orogenic episodes. If Pre-Mesozoic palinspatic reconstructions are ...
Upper Cretaceous Eclogite-Facies Metamorphic Rocks from the Biga Peninsula, Northwest Turkey
Eclogite facies metamorphism Rb/Sr data Turkey Biga Peninsula Rhodope Massif
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2009/7/8
Medium-grade metamorphic rocks crop out over a large area under the Neogene sedimentary and volcanic rocks in the central Biga Peninsula in northwest Turkey. These Çamlıca metamorphics co...
Late Devonian Conodont Fauna of the Gümüşali Formation, the Eastern Taurides, Turke
Late Devonian conodon Gümüş ali formation eastern Taurides Turkey
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2009/7/8
The Late Devonian Gümüşali formation of the eastern Taurides is a terrigenous-carbonate rock sequence about 600 m thick, consisting mainly of quartz sandstone, quartz siltstone, shale, and carbon...
A First Record of a Strike-slip Basin in Western Anatolia and Its Tectonic Implication: The Cumaovası Basin
Cumaovası strike-slip basin transpression transtension extension western Anatolia
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2009/7/7
The Cumaovası basin, formerly known as the Çubukludağ Graben, is located at the western end of Gediz and Küçük Menderes grabens in the west Anatolian extensional province. It i...
Punctuated Exhumation and Foreland Basin Formation and Infilling in (Circum)-Central Anatolia (Turkey) Associated with the Neo-Tethyan Closure
punctuated exhumation foreland basin crustal shortening Neo-Tethyan collision central Anatolia Tur
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2009/7/7
Apatite fission-track data indicate that the (circum)-central Anatolian granitoids (CAG) were exhumed during successive shortening phases following continent-continent collisions within the Neo-Tethya...
Post-Miocene Deformation in the South of the Galatean Volcanic Province, NW of Central Anatolia (Turkey)
palaeostress analysis extensional tectonics neotectonics ate Miocene-Plio-Quaternary Anatolia
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2009/7/7
Central Anatolia, located on the immense Alpine-Himalayan orogenic belt, has a complicated neotectonic evolution, and NE-SW-trending Neogene horsts-graben systems that rejuvenate pre-existing palaeost...
面理化含榴花岗岩是大别-苏鲁中生代碰撞造山带内大面积出露的一类特殊岩石类型, 它一般与高压超高压变质岩共生. 当前研究对该类岩石的成因、构造演化及与超高压变质岩关系等存在不同认识. 选择西大别北缘浒湾高压变质单元中的面理化花岗岩岩体进行锆石SHRIMP定年与构造变形特征分析. 测年结果表明, 岩体的锆石SHRIMP年龄为(762±15) Ma (MSWD=1.7), 代表了岩体侵位结晶年龄, 表明...
作为欧亚与印度板块缝合线的雅江蛇绿岩带在野外并未发现统一的构造极性, 岩石处于脆性-韧脆性变形和低绿片岩相变质作用; 构造样式沿南北剖面上总体呈现对称状; 两侧复理石建造与蛇绿岩套之间没有大型南北向剪切糜棱岩带; 局部可直接观察到复理石与蛇绿岩深海沉积整合接触; 许多“构造混杂岩”属于深水陡坡滑塌堆积; 蛇绿岩带南北两侧的中生代-新生代沉积建造的沉积环境演变具有时间上的宏观对应性; 蛇绿岩带常以狭...
在大别山东段进行的综合地球物理调查的资料不仅提供了较精细的地壳构造信息, 而且不同方法取得的资料有很好的相关性. 根据这些资料作综合研究可以编制出较为可靠和精细的地壳构造剖面图(图版II). 东大别造山带的地壳可分为北淮阳、北大别、南大别与宿松4个构造单元. 其中宿松高压变质带的中下地壳为扬子俯冲地壳, 而北淮阳下方的中下地壳为中朝克拉通的地壳, 合肥盆地下方亦为中朝克拉通的基底. 南、北大别的中...
3DMove构造裂缝预测技术在古潜山的应用研究
3DMove 构造裂缝 潜山 构造复原
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2009/5/20
应用3DMove软件的裂缝预测技术, 预测埕北潜山的裂缝发育及其方向, 得到潜山顶面的应变分布图、裂缝相对密度和方位分布图以及裂缝开启性分析等有关图件. 埕北30潜山带古生界地层中北西、北东和近东西方向裂缝均很发育, 各个断块裂缝主方向不同. 预测结果与测井资料得到的裂缝方位有较好的一致性, 而且钻井结果也很好地验证了裂缝预测结果的可靠性.