Indeed , the jack hills zircons ? separated by perhaps thousands of kilometers from their source ? were found embedded in a fossilized gravel bar called the jack hills conglomerate 事实上，在杰克丘发现的锆石，就是深埋在名为杰克丘砾岩的化石砂砾层里，而它们很可能是从几千公里远的地方被带到那里的。
The segment , es32 , is a set of sedimentation deposited by gravity flow of the near - shore steep slope sublacustrine fen , is formed out of granule roundstone and also features coarse lithology and crude grading Es _ 3 ~ 2段储层属近岸陡坡湖底扇重力流沉积，储层岩性以细砾岩为主，岩性粗、分选性差。
The differences of strata thickness and clasts composition between west and east limb suggest different provenances . in this paper the possible provenances of the tuchengzi formation conglomerate are discussed in detail 5 、根据土城子组向斜两翼岩层厚度及砾岩砾石成分的显著差异，推测两翼地层可能来自于不同的物源区。
Jianmenguan scenic area , as a national key scenic area and national forest park , has been sparing no efforts to establish a national geo - park since the discovery of its unique geological tourism resources 摘要作为国家级风景名胜区和国家级森林公园的剑门关旅游区，在发现了其独特的砾岩丹霞地貌景观等地质旅游资源所体现的旅游价值后，现着力打造国家级地质公园。
The usually called " kongtong conglomerate " , possiblely aged middle - late of late triassic , is the facies change sediment of the yangchang formation in the west margin of ordos basin , and its component are mainly pebbles of limestone and sandstone 摘要“崆峒山砾岩”是延长组在盆地西缘的相变产物，可能形成于延长组中晚期（长7 -长1期） ,对应于鄂尔多斯西南缘前陆盆地形成期。
The tuchengzi formation mainly consists of carbonate ( limestone and dolomite ) clast conglomerate characterized by poorly sorted and poorly rounded clasts , which shows that the deposition of the tuchengzi formation is closely associated with late jurassic tectonism 砾岩的成分和结构成熟度都表明它的形成与剧烈的构造活动紧密相关，是研究区内晚侏罗世时期强烈构造变动的沉积记录。
The present longmenshan foreland basin lies between the longmenshan thrust belt and the longquanshan fault . the dayi conglomerate at the bottom of the chengdu basin , although people of the past having studied a certain degree , hasn " t same sugest 大邑砾岩的地质时限为上新世-早更新世，时代界定在4 . 6ma - 0 . 82ma之间，显示该区第三纪与第四纪之间是连续沉积的，其间不存在构造事件。
Based on the 1 : 250 , 000 qinglong mapping project , we chose to study nuyingzi - goujiadian basin , a small jurassic basin in western liaoning province . within this basin , we place emphasis on the late jurassic tuchengzi formation , which mainly consists of conglomerate 本文依托于1 ： 250000青龙县幅区调项目，选择了辽宁省西部的牛营子-郭家店侏罗纪盆地中的土城子组砾岩进行同构造沉积研究。
The wall rock of the mine is the third member of aqishan formation , which it is formed by the neutral - acidic volcanic rock and volcanic arenite of calcium - alkala series . the rock is mainly of andesite , quartz andesite , volcanic breccia agglomerate and volcanic breccia 矿床赋矿围岩为阿奇山组第三岩性段钙碱系列的中酸性火山岩-火山碎屑岩，主要岩性为安山岩、英安岩、火山角砾熔岩、火山角砾岩等。
Based on the derivation of metallogenic matters , mineralization and wallrock conditions , the gold deposits are subdivided into three main types : volcanic thermal type , subvolcanic rock - shallow to ultra - shallow porphyry thermal type , and concealed explosive breccia type of gold deposits 根据其金矿成矿物质来源、成矿作用及产出的围岩条件可划分为火山热液型、次火山浅成斑岩热液型和隐爆角砾岩型金矿床。
