查询词典 volcanic bomb

Shoshonite ; high-K calc-alkaline ; volcanic cycle ; volcanic rocks Cenozic ; Hoh Xil Lake

钾玄岩系列；高钾钙碱性系列；火山旋回；新生代火山岩；可可西里湖地区

Studies of petrology and petrochemistry indicate that such suit of volcanic rocks dominated by lattite belongs to shoshonite series to potassic alkali basalt series. Considering the stability of rocks and their associations, gentle stratum occurrence, fresh degree of rocks and comparatively clarity of horizons. this potassic volcanic stratum distributed over the Sailipu area is named as Sailipu Formation, and the age of which is early middle Pleistocene of Quaternary.

岩石学、岩石化学研究表明，这套火山岩是以安粗质熔岩为主的钾玄岩系列－钾质碱性玄武岩系列火山岩，岩石类型及岩石组合稳定，岩层产状平缓，岩石新鲜，层位相对清楚，故将其命名为赛利普组，属第四纪早－中更新世。

The distinctive features of volcanic rocks, especially the spilite, illustrates that mantle plume or hotspot with small scale might be the essential origin of a series geologic events such as the extension of crust, the interval eruption of submarine bimodal volcanic rocks especially the increasing eruption of basic rocks, and the mineratlization of Ashele mine

认为成岩、成矿背景属裂陷拉张环境，火山岩尤其是细碧岩具有五大特殊性，初步提出了热点作用是导致地壳拉张、双峰式火山岩间互喷发、从早到晚基性火山作用趋于增强、以及成矿作用等一系列地质事件的深层次原因的看法

The spacial-temporal characteristics of the climate response to volcanos connect with the latitude location, season and strongness of volcanic eruption, Series analyses also confirm the obvious correspondence between the volcanic eruption and the climate change.

时序叠加研究表明，强火山喷发可造成半球和全球年平均温度下降约0.3℃，持续时间约两年；火山活动对气候影响的时空分布特征和火山活动特征：如火山喷发强度、喷发位置和季节等等有关。

The Paleoproterozoic Beidahe Group-complex remains as continental shivers in the interior of the North Qilian orogen. In its early stage of development, there occurred abundant amphibolite. The protolith of the amphibolite is basalts. The Alk-∑FeO-MgO plot, REE features and Rittmann index show that the protolith belongs to the calc-alkaline suite and exceptionally shows the subalkaline character. The rock is characterized by higher Al2O3 and ∑FeO and lower Mg#, indicating that it has a higher degree of compositional evolution and that the formation of volcanic rocks is related to activation of older crust. Highly fractionated REE patterns and amphibolite on the Ti-Zr-Y plot, Ni-FeO/MgO plot and Ta/Yb-Th/Yb plot all indicate the characteristics of volcanic arcs and active continental margins. On the geochemical diagram of basalt, the overall REE features are in the main analogous to those of calc-alkaline island-arc basalt, with Sr87/Sr86=0.71617–0.72033,Nd143/Nd144=0.512414–0.512495 and εNd=–2.79 to –4.37,εSr=245.78–305.3, showing that the magma was derived from the crust or subjected to contamination with the lower crust below the continent.

提要：以大陆碎块形式残存于北祁连造山带内部的古元古代北大河岩群早期发育有大量的斜长角闪岩，其原岩为玄武岩，Alk—∑FeO—MgO图解，REE特征，里特曼组合指数等均显示斜长角闪岩属钙碱性系列范围，个别显示弱碱性，斜长角闪岩具有较高的Al2O3，∑FeO和低的Mg#，这些特点反映其成分演化程度较高，表明火山岩的形成与古老地壳的活化有关，有较强分异的稀土元素分配模式，在Ti—Zr—Y图，Ni—FeO/MgO图解和Ta/Yb—Th/Yb图解上斜长角闪岩均显示火山弧或活动大陆边缘的特点，在玄武岩的地球化学形式图，稀土元素整体特征与钙碱性岛弧玄武岩基本相同；87Sr/86Sr=0.716 17～0.720 33， 143Nd/144Nd=0.512 414～0.512 495，εNd=-2.79～-4.37。

The volcanic facies in study area include 12 subfacies in 5 volcanic facies.

松辽盆地东南隆起区营城组火山岩岩相类型涵盖5种岩相中的12种亚相。

The original alkalic series of basalic magma evolutes into trachybasalt through crystallization differentiation of olivine and pyroxene, and the trachybasalt is transformed into alkalic rhyolite with remarkable Eu, Sr, Ba, Ti, P nagetive abnormalities through strong crystallization differentiation of plagioclase and also pyroxene Ti Fe oxides and apatite, all together leading to the loss of neutral (SiO 2=57%～63%) andesite and trachyandesite in the volcanic rocks in this area and appearance of bimodal volcanic rock combination feature.

原始碱性系列玄武质岩浆经橄榄石、辉石的结晶分异，向粗面玄武岩演化；粗面玄武岩经斜长石强烈的结晶分离作用，还有辉石、钛铁氧化物和磷灰石的分离结晶作用形成具显著Eu、Sr、Ba、Ti、P负异常的碱性流纹岩，导致本区火山岩缺失中性(SiO2=57%～63%)的安山岩和粗安岩，呈现双峰式火山岩组合的特点。

Over one hundred sixty volcanic cones,pyroclastic sheet,river valley lava and eight maars with phreatomagmatic eruption genesis distribute of Longgang volcano,Jilin Province.The volcanic rock of Longgang volcano is trachybasalt with very similar chemical composition(SiO2=48-50%).

龙岗火山区分布160多个玄武质火山渣锥，以及火山碎屑席、河谷熔岩和8个射气岩浆喷发的低平火山口－龙湾，所有火山岩为单一钾质粗面玄武岩(SiO2变化于48-50%)。

The trachytic volcanic rock, with its intact volcanic mechanisms, formed the splendid peaks, valleys and waterfalls after the erosions and weathering of long time.

经后期的构造切割和各种侵蚀风化作用，西樵山火山形成了诸多俊秀的山峰，幽深的峡谷、瀑布。

The three kinds of associated minerals have implied the characteristic mineral combination of volcanic tuffaceous alteration, which illustrated the reliable deposition of the contemporaneous palaeovolcano events and signified the diagenetic epigenetic alteration records in the volcanic tuffaceous matters transiting from the acidic environment to the alkaline environment.

这三种矿物共生构成火山凝灰质蚀变的特征矿物组合，是同生期古火山事件的可靠沉积和成岩后生蚀变记录，也是火山凝灰物质成岩后生条件由酸性过渡到碱性的古环境转变的标型记录。

We got alerted a couple of times while we were down south that HETs were on the way to bring us back up north because things were going to go hot again, but it was just rumors.

南下的途中我们不只一次得到警告说重型装备运输车将拉着我们重新北上，因为局势正在变得重新紧张起来，但这只是谣传。

It's the one where they find the ghost in the salt mine.

这一集是演他们在盐矿找到鬼