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This paper points out that the ore-forming pattern of this mineral deposit is ore-bearing basic-superbasic magma melting-crystalline different and ore magma impulse injection in turn. It indicates there maybe has a ore shoot in the bottom of III rock body(interrupted below 650m), and advises to geophysical prospecting in the mining shaft.
并指出本矿床为含矿基性-超基性岩浆熔离-结晶分异和矿浆依次脉冲式贯入的铜镍硫化物矿床成矿模式,指明Ⅲ号岩体下部(650m以下中断)可能存在一富矿体,并建议进一步做井中物探证实。
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The study of their precise UPb geochronology and characteristics of rock associations shows that (1) small amount of EarlyTriassic (~248 Ma) volcanic rocks were preserved and cropped out in the area, which consist mainly of thin bed of andesitic rocks intercalated with minor basaltic andesites; that (2) the MiddleTriassic magmatism was characterized by extensive felsic igneous rocks with minor basalts interbedded in the middle of volcanic sections in part of areas, and the late MiddleTriassic rhyolites and main body of Lincang granitic batholith have the same extrusive/intrusive time with the age of ~230 Ma; that (3) the LateTriassic volcanic sequences are principally composed of basalts with minor interlayered rhyolites, exhibiting typical characteristics of bimodal volcanics.
三叠纪岩浆作用广泛发育于澜沧江南带,锆石UPb年代学结果及岩石组合特征显示:(1)该区残留有少量的早三叠世火山岩(约248 Ma),主要为一套薄层的以安山岩为主的火山岩;(2)中三叠世以大规模的酸性岩浆作用为主,部分地段的中部夹有少量的玄武岩,其中晚期的流纹岩与该区出露巨大的临沧花岗岩基主体具有一致的形成时代(约230 Ma);(3)晚三叠世则以基性火山岩为主,夹少量流纹岩为特征的&双峰式&火山岩组合。
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L. Volcanic rocks in the Ashele mine are characterized by interbedded basic and acidic pyroclastic rocks, and made up typical bimodat pattern according to 〓 features and Lithochemistry
从地质特征和岩石化学两方面论证了矿区火山岩以基、酸性碎屑岩互层为主要特点,并构成典型的双峰式火山岩组合
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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
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Volcanic eruptions happened: the 1st and 3rd are fissure eruptions of intermediate-basic basaltic andesite and are resulted from the structures of active period, while the 2nd belongs to central eruption of neutral trachyandesite and is derived from the structure of stabilized period.
其间包括3次火山喷发活动,第1次和第3次为中基性玄武安山岩的裂隙式喷发,为构造活动期的产物;第2次为中性粗安岩的中心式喷发,为构造稳定期的产物。
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face holds:岩面抓握点
斜岩攀登尚可运用其他技巧,偶尔可找到岩面抓握点(face holds)和裂隙. 用手指、拇指、手掌基部向下施压於窄小边缘或不规则的岩石. 窄小边缘可用背向后倚式(lieback). 找可用大字式攀登法(stemming)之处就有机会休息. 详见下节讨论.