{"title":"The geodynamic mechanism for the formation of Mongol-Okhotsk orcocline","authors":"ZHU MingShuai, LUO Ye, JIA ChaoYuan, MIAO LaiCheng, ZHANG FuQin, SANCHIR Dorjgochoo, YU JianFeng","doi":"10.18654/1000-0569/2023.11.14","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.11.14","url":null,"abstract":"蒙古-鄂霍茨克造山带呈北东向从蒙古中部延至鄂霍茨克海的乌地湾,被认为是蒙古-鄂霍茨克洋侏罗纪-白垩纪闭合产物,其对于探讨东北亚区域大地构造演化以及欧亚大陆中生代聚合具有重要意义。蒙古-鄂霍茨克造山带具有典型的山弯构造格架,其\"对折\"的两翼发生了强烈的\"自碰撞\"造山作用。关于蒙古-鄂霍茨克山弯构造形成动力学机制,前人将其归因于西伯利亚与华北-阿穆尔陆块之间的挤压缩短、古亚洲洋俯冲板片不断的后撤和西伯利亚与华北的相向旋转等动力学过程,却忽视了蒙古-鄂霍茨克洋俯冲作用对蒙古-鄂霍茨克马蹄形弯曲过程的影响。最近,弧岩浆活动的迁移和山弯构造转折端构造变形解析研究暗示蒙古-鄂霍茨克洋俯冲板片后撤可能在山弯构造形成过程中起着重要作用,但这一新的解释模式还缺乏地质证据的支持和验证。围绕蒙古-鄂霍茨克山弯构造发育的与岛弧岩浆岩同时期的弧后盆地蛇绿岩、双峰式火山岩、A2型和S型花岗岩和伴生的沉积岩等地质记录,表明蒙古-鄂霍茨克洋在二叠纪-三叠纪时期发育多期次弧后伸展,总的延伸长度超过5000km,与蒙古-鄂霍茨克洋大规模俯冲板片后撤有关。弧后盆地带的厘定表明蒙古-鄂霍茨克洋发育西太平洋型活动大陆边缘,而非安第斯型活动大陆边缘。另外,蒙古-鄂霍茨克洋的弧后伸展盆地形成时间与蒙古-鄂霍茨克山弯构造弯曲的时间一致,进一步证实俯冲板片沿走向不均匀后撤在蒙古-鄂霍茨克山弯构造形成过程中扮演着重要角色。","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135262012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Formation mechanisms of the Caotan carbonatite-type iron deposit in Lesser Qinling","authors":"ZHAO XiaoChen, YAN Shuang, NIU HeCai, ZHAO Xu","doi":"10.18654/1000-0569/2023.11.17","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.11.17","url":null,"abstract":"草滩碳酸岩体出露于小秦岭北端,与黄龙铺碳酸岩体直线距离约18km,但二者矿化特征显著不同,前者以铁矿化为主,后者则以钼-稀土多金属矿化为特征。已有的研究认为,草滩碳酸岩是富集地幔部分熔融的产物,它不但含方解石碳酸岩,还含有早期结晶的白云石碳酸岩,但有关铁矿化机制的研究则鲜有报道。本文对草滩碳酸岩和铁矿石进行了元素地球化学和Sr-Nd-Pb同位素组成研究,并对两类样品中磁铁矿和磷灰石进行了原位微量元素组成分析,旨在约束碳酸岩型铁矿床的形成机制。通过岩相学和地球化学的综合研究,本文在草滩碳酸岩体中厘定出了磁铁橄磷岩,它也是母岩浆早期结晶的产物,这表明该碳酸岩体实际上是一个由方解石碳酸岩、白云石碳酸岩、磁铁橄磷岩和铁矿体组成的碳酸岩杂岩体。铁矿石的Sr-Nd-Pb同位素组成与磁铁橄磷岩相近,暗示铁矿化是富铁碳酸质岩浆自身演化的产物。草滩磁铁橄磷岩与铁矿石中磁铁矿和磷灰石的微量元素地球化学特征显示,铁矿化发生在岩浆阶段;但与磁橄磷岩相比,铁矿石的母岩浆演化程度更高,不但明显富集挥发分,且体系氧逸度也明显增加。","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135262013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.18654/1000-0569/2023.11.09
FENG HaoXuan, LUO YaoQing, BAI YingXiong, CAO Chong, WU Yang
{"title":"Zircon as a recorder of magmatic-hydrothermal transition and crystal-melt-fluid interaction in Kaluan Li-Be-Nb-Ta pegmatites, northwestern Xinjiang, China","authors":"FENG HaoXuan, LUO YaoQing, BAI YingXiong, CAO Chong, WU Yang","doi":"10.18654/1000-0569/2023.11.09","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.11.09","url":null,"abstract":"","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134882985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.18654/1000-0569/2023.11.02
LIU YiFei, JIANG SiHong, CHEN Lei, ZHANG WeiBo, CAO Hui, JI GenYuan, ZHANG BoHui, YAN PengCheng
{"title":"Geology and geochemistry of the Khaldzan Burgedei Zr-Nb-Ta-REE deposit in Mongolian Altay, and a preliminary discussion for its genesis","authors":"LIU YiFei, JIANG SiHong, CHEN Lei, ZHANG WeiBo, CAO Hui, JI GenYuan, ZHANG BoHui, YAN PengCheng","doi":"10.18654/1000-0569/2023.11.02","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.11.02","url":null,"abstract":"","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134883382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.18654/1000-0569/2023.06.07
Jianfeng Chen, Yun-lei Du, Yi-Qu Xiong, S. Guan, Hongsheng He, Li-Tong Zhou, Wen Lu, Jinjiang Shi
{"title":"Ore-forming mechanism of Caledonian W-Sn deposit in the Nanling Range: A case study from the Luojiachong deposit, sourthwestern Hunan Province","authors":"Jianfeng Chen, Yun-lei Du, Yi-Qu Xiong, S. Guan, Hongsheng He, Li-Tong Zhou, Wen Lu, Jinjiang Shi","doi":"10.18654/1000-0569/2023.06.07","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.06.07","url":null,"abstract":"","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"4 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90588439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.18654/1000-0569/2023.03.13
Wang XinPing, P. Peng, L. Xiaobing
{"title":"Petrogenesis and geological implications of the ca.2520Ma gabbroic intrusions in Wutai Mountain of the North China Craton","authors":"Wang XinPing, P. Peng, L. Xiaobing","doi":"10.18654/1000-0569/2023.03.13","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.03.13","url":null,"abstract":"","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"13 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72757195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.18654/1000-0569/2023.05.17
Wang Meiyun, Li Jie, Song Mingchun, Zhang Lipeng, Tang Zongyuan, Ding Zhengjiang
{"title":"The metallogenic mechanism of the Dadengge gold polymetallic deposit in the Jiaodong Peninsula: Constraints from pyrite Rb-Sr dating, in situ S isotope and trace elements.","authors":"Wang Meiyun, Li Jie, Song Mingchun, Zhang Lipeng, Tang Zongyuan, Ding Zhengjiang","doi":"10.18654/1000-0569/2023.05.17","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.05.17","url":null,"abstract":"","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"72 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85647709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.18654/1000-0569/2023.09.10
Baorui Zhang, Fanmei Kong, Xuping Li, S. Tong, JinHui Xuan, Yuanming Gao, S. Ying
{"title":"Relationship between the crystallization of graphite and metamorphism of graphite-bearing granulite in Rizhuang, Jiaobei Terrane","authors":"Baorui Zhang, Fanmei Kong, Xuping Li, S. Tong, JinHui Xuan, Yuanming Gao, S. Ying","doi":"10.18654/1000-0569/2023.09.10","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.09.10","url":null,"abstract":"","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"20 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82583204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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