| 老挝琅勃拉邦—泰国黎府成矿带古特提斯构造-岩浆演化与金铜成矿作用 |
| |
| 引用本文： | 郭林楠,刘书生,聂飞,吴松洋,徐思维,施美凤. 老挝琅勃拉邦—泰国黎府成矿带古特提斯构造-岩浆演化与金铜成矿作用[J]. 沉积与特提斯地质, 2022, 42(2): 228-241. DOI: 10.19826/j.cnki.1009-3850.2022.04012 |
| |
| 作者姓名： | 郭林楠 刘书生 聂飞 吴松洋 徐思维 施美凤 |
| |
| 作者单位： | 1.中国地质调查局成都地质调查中心,四川 成都 610081; 2.中国地质调查局应用地质研究中心,四川 成都 610036 |
| |
| 基金项目： | 国家自然科学基金项目“老挝帕奔金矿主要载金矿物方解石年代学和地球化学研究”(42102113)；国家重点研发计划课题“特提斯成矿域战略性矿产信息与成矿规律”(2021YFC2901803)；国际地球科学计划(IGCP-741)；中国地质调查局地质调查项目“东南亚南亚国际合作地质调查”(DD20221805) |
| |
| 摘 要： | 老挝琅勃拉邦—泰国黎府成矿带位于印支板块西北缘，是中南半岛重要的金铜成矿带之一。该带经历了晚古生代—中生代古特提斯构造-岩浆演化作用，成矿活动复杂，形成了斑岩-矽卡岩型金铜矿床、浅成低温热液型金银矿床以及热液脉型金矿床。然而，热液脉型金矿的成因类型仍存在争议，3类金铜矿床与区域构造演化的关系仍缺乏总结。本文通过对前人典型矿床研究资料的整理，并结合成矿流体来源、演化新证据，将带内热液脉型金矿床的成因类型归为造山型金矿。综合区域构造-岩浆-成矿作用研究资料，总结了成矿带内3类金铜矿床的时空分布规律和成矿特征，建立了与古特提斯洋俯冲-闭合及陆陆碰撞过程相关的区域金铜成矿模式，提出了晚二叠世—早三叠世俯冲期浅成低温热液型金银矿床、早中三叠世闭合期斑岩-矽卡岩型铜金矿床、晚三叠世陆陆碰撞期造山型金矿床的成矿规律。
|
| 关 键 词： | 琅勃拉邦—黎府成矿带 古特提斯构造-岩浆演化 金铜成矿作用 造山型金矿 |
| 收稿时间： | 2022-02-17 |
| 修稿时间： | 2022-04-23 |
Paleo-Tethys tectonic-magmatic evolution and gold-copper metallogenesis in Luang Prabang (Laos)-Loei (Thailand) metallogenic belt |
| |
| GUO Linnan,LIU Shusheng,NIE Fei,WU Songyang,XU Siwei,SHI Meifeng. Paleo-Tethys tectonic-magmatic evolution and gold-copper metallogenesis in Luang Prabang (Laos)-Loei (Thailand) metallogenic belt[J]. Sedimentary Geology and Tethyan Geology, 2022, 42(2): 228-241. DOI: 10.19826/j.cnki.1009-3850.2022.04012 |
| |
| Authors: | GUO Linnan LIU Shusheng NIE Fei WU Songyang XU Siwei SHI Meifeng |
| |
| Affiliation: | 1.Chengdu Center,China Geological Survey,Chengdu 610081,China; 2.Research Center of Applied Geology,China Geological Survey,Chengdu 610036,China |
| |
| Abstract: | The Luang Prabang (Laos)-Loei (Thailand) metallogenic belt is located on the northwestern margin of the Indochina Block and is one of the important gold-copper metallogenic belts in the Indo-China Peninsula. It has experienced the Paleo-Tethys tectonic-magmatic evolution during the Late Paleozoic-Mesozoic, leading to complex metallogenic activities and forming porphyry-skarn Cu-Au, epithermal Au-Ag, and hydrothermal vein-type gold deposits, respectively. However, the genetic type of hydrothermal vein-type gold deposits is still controversial. There is no summary as well on relationship between the three types of gold-copper deposits and the regional tectonic evolution up to now.In this paper, by summarizing the previous research data of typical deposits, and combining with new evidence from study on source and evolution of ore-forming fluids, we conclude the hydrothermal vein-type gold deposits in the belt as orogenic gold deposits. Based on regional tectonic-magmatic-metallogenic research, the temporal and spatial distribution, as well as metallogenic characteristics of three types of typical gold-copper deposit including porphyry-skarn Cu-Au deposits, epithermal Au-Ag deposits and orogenic gold deposits in the belt was summarized. We also establish a regional metallogenic model related to the subduction-closure of the Paleo-Tethys Ocean plate and subsequent continental-continental collision process, consisting of porphyry-skarn Cu-Au in Late Permian-Early Triassic subduction period, epithermal Au-Ag inEarly-Middle Triassic closure period, and orogenic Au in Late Triassic collision period. |
| |
| Keywords: | Luang Prabang-Loei metallogenic belt Paleo-Tethys tectonic-magmatic evolution Gold-copper metallogenesis Orogenic gold deposit |
|
| 点击此处可从《沉积与特提斯地质》浏览原始摘要信息 |
|
点击此处可从《沉积与特提斯地质》下载免费的PDF全文 |
|
