造岩的
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This paper deals emphatically with the genetic mineralogical characteristics of amphibole, an important rock-forming mineral extensively-distributed in ophiolites of Shangnan-Danfeng are...
本文着重论述了商丹地区蛇绿岩中广泛分布的主要造岩矿物之一,角闪石的主要特征组份、微量元素、晶胞参数、阳离子占位度等成因矿物学特点。
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1:250000 geological mapping has further revealed the mysteries of the tectonics of the Qinghai-Tibet Plateau. The Altun Mountains are not of the Tarim massif, but a part of the Kunlun-Qilian-Qinling orogenic system; the Altun fault is a large transform fault; the Muztag-Maqên suture zone and Jinshajiang suture zone are both Variscan ones; the Songpan-Garzê area in the Triassic was a huge turbidite basin on the southern margin of Laurasia; the Gangdise belt underwent the important Indosinian orogenic movement; an ocean basin that persisted from the Paleozoic to Triassic did not exist, i.e. the so-called Paleo-Tethys or permanent Tethys was not in existence in the Qinghai-Tibet Plateau. In the Paleozoic, most parts of China, including the Sino-Korean, Yangtze and Tarim massifs and the Qinghai-Tibet Plateau, were located in south of the main ocean basin—the Central Asian-Mongolian sea way—of the Paleo-Asia ocean, belonging to the northern margin of Gondwana. The Yarlung Zangbo and Bangong -Nujiang belts were twins in the Tethyan Ocean, which began to develop into two ocean rift belts in the Triassic. The Tethyan Ocean with the Yarlung Zangbo belt as the main ocean basin belt began to be subducted in the Late Triassic and experienced a process of pulsatory plate convergence orogeny including the Indosinian, Yanshanian and Himalayan stages.
1:25万地质填图进一步揭开了青藏高原地区大地构造的奥秘:阿尔金山是昆仑,祁连-秦岭造山系的一部分;阿尔金断裂确是一条大型转换断层;木孜塔格-玛沁缝合带和金沙江缝合带均是华力西缝合带;松潘甘孜三叠系沉积盆地是劳亚大陆南部边缘的浊积岩盆地;冈底斯带曾经历了重要的印支造山运动;不存在从古生代延续到三叠纪的大洋盆地,即不存在所谓古特提斯或永久特提斯;古生代时期,在青藏高原地区亦不存在具古生物,古地理分隔意义的大洋盆地,当时,包括中朝,扬子,塔里木以及青藏高原地区在内的中国大部分均位于古亚洲洋主洋盆——中亚-蒙古带之南,属冈瓦纳大陆结构复杂的北部边缘;雅鲁藏布江和班公湖-怒江带是特提斯洋中的孪生姊妹,它们均是从三叠纪起就发展成大洋裂谷带的;以雅鲁藏布江带为主洋盆带的特提斯洋,从三叠纪晚期开始消减,经历了印支,燕山,喜马拉雅3个阶段脉动式板块汇聚造山过程。
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It is in accordance with the southward overthrust nappe acting time of South Tianshan orogenic belt.
前渊带以巨厚的浊积岩为特征,在上石炭统上部-下二叠统隆林阶中部台地相地层之上沉积有浊积岩的地质事实表明,前渊带在隆林晚期至中二叠世栖霞期不断向南迁移,这与南天山造山带当时的向南逆掩推覆活动是一致的。
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Study on thermal history of Himalaya orogen provides not only accurate chronological coordinate on the cooling history, but also basic materials in verifying models related to the uplift of Himalaya.
对喜马拉雅造山带岩体的热史演化研究不仅能为山脉的隆起历史提供精确的年代学坐标,也能为检验造山带的隆起模型及新构造样式提供基础资料。
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Research on the main rock-forming minerals of Middle Proterozoic Subera Yingfeng rapakivi granite in the North Qaidam Basin tectonic belt indicates the magmatic body exhibits pyterlitic rapakivi texture,and each main mineral is polygenetic.K-feldspar mainly takes the form of oval phenocryst,and exsolved albite stripe is well-developed.
柴北缘构造带中元古代鹰峰环斑花岗岩主要造岩矿物的研究结果表明,该岩体具pyterlitic型环斑结构,各主要矿物均具多世代特征。
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Advance in the study of Neoproterzoic mafic-ultramafic rocks in the western margin of the Yangtze craton has been reviewed in this paper. These rocks consists of 0.95—0.90 Ga orogenic rocks and 0.86-0.74Ga anorogenic rocks, which reflect Neoproterozoic tectonic evolution from arc to intra-continental rift in the area.
本文著重总结和评述了扬子地块西缘的新元古代镁铁超镁铁质岩的最新研究成果,认为这一期岩浆活动是由约0.95~0.90 Ga造山带的岩浆活动和0.83~0.74 Ga非造山的岩浆活动组成,反映了从岛弧到板内裂谷的构造演化模式。
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And 5. 4~8. 5‰, respectively. Nonequilibrium oxygen isotope fractionation between rock-forming minerals and the low H〓O content indicate that depletion in D-〓O of the A-type granites from eastern China is the result of magma degassing and subsolid interaction between meteoric water and rocks.
主要造岩矿物对氧同位素不平衡分馏和全岩低水含量特征指示中国东部A型花岗岩D-〓O亏损主要受岩浆去气作用和岩浆期后大气降水亚固态交换的制约。
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Two types of cumulate gabbros are exposed in Wulatezhongqi area, including amphibole gabbros and olive gabbros. The major petrogenetic minerals in the Wengeng gabbros are olive, pyroxene, plagioclase and hornblend.
乌拉特中旗温更地区由角闪辉长岩和橄榄辉长岩组成的混杂堆晶岩系,主要造岩矿物为橄榄石、辉石、斜长石及角闪石等。
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The rocks of early Proterozoic and Archaean contain the lower potassium feldspar and lead number in potassium feldspar is lower than 10% of lead in the whole rocks.
中文摘要:在中-酸性岩浆岩、碱性岩浆岩、片麻岩及混合岩等岩石类型中,钾长石是含铅最高的造岩矿物,其铅含量是全岩铅含量的2~10倍,云母类矿物铅含量的3~16倍,石英铅含量的6~32倍。
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The data show the following ages: 1894±17 Ma and 1847±59 Ma for garnet pyroxenite of the Tiantangshan Group complex, indicating a Paleoproterozoic age; 1462±28 Ma for the metabasic volcanic rocks of the Yunkai Group complex, indicating the presence of fragments of the Meso- and Neoproterozoic oceanic crust in the Yunkai area; 906±24 Ma for the granitic gneiss intrusion is, which should be the product of the global Grenville collisional orogeny occurring around 1000 Ma BP. In addition, an inherited detrital zircon age of 2702±13 Ma was also obtained, which is the oldest age in the Yunkai area and even in Cathaysia, proving the presence of Neoarchean continental crustal material in Cathaysia.
获得天堂山岩群石榴辉石岩的形成年龄为1894Ma±17Ma和1847Ma±59Ma,表明其时代为古元古代;云开岩群洋中脊型变质基性火山岩的喷发年龄为1462Ma±28Ma,证明该地区存在中元古代的古洋壳残片;获得花岗质片麻岩的侵入年龄为906Ma±24Ma,应为1000Ma前后发生的全球性Grenville期造山作用的产物,并获得2702Ma±13Ma的继承碎屑锆石年龄,这是云开地区乃至华夏古陆目前获得的最古老年龄,证明华夏古陆曾存在新太古代陆壳物质。
- 推荐网络例句
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I can not make it blossom and suits me
我不能让树为我开花
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When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.
当温度高于 80 °C 左右时,滚道或滚动元件褪色是很常见的特征。
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The lawyer's case blew up because he had no proof.
律师的辩护失败,因为他没有证据。