四川岳池龙潭期地层及腕足动物

首次系统地报道了四川华蓥山地区岳池县李子垭剖面中的龙潭组地层及其腕足动物群,并对该腕足动物群的性质和特点进行了定量和定性分析。同时,与国内其它有关地区的同期的腕足动物群进行对比、讨论,指出该动物群为华南区晚二叠世早期比较典型的腕足动物群。     

东北及邻区晚古生代大地构造属性新认识

哲斯腕足动物群是一个凉水型腕足动物群,土著种含量在75%以上,古生物地理区划属于北方生物地理大区的内蒙古区。自成一个地理区说明其北有重要地理隔绝:暗示存在一个较大地块(佳—蒙地块);凉水型性质则说明中二叠世这个稳定地块与华北板块之间存在一个足够宽的深海洋盆——古亚洲洋南支。在佳—蒙地块上,晚古生代地层发育较佳,保存较好。这些晚古生代地层围绕佳—蒙地块核心呈环带状分布,明显构成佳—蒙地块的大陆边缘沉积。在我国东北地区,出露的晚古生代海相地层主要为佳—蒙地块的南缘和北缘沉积。根据目前已有资料统计,中生代为东北及邻区花岗岩侵位的峰期,志留纪—泥盆纪为花岗岩浆活动相对沉寂的时期,花岗岩的这种侵位时代特征支持晚古生代存在一个稳定地块的设想。东北地区晚古生代地层主体未见遭受低绿片岩相区域变质的迹象,说明这一地区晚古生代地层主体未曾发生过强烈的褶皱造山、普遍的区域变质的地槽发展过程。东北及邻区为天然地震弱震区,其周缘被锡霍特—珲春、蒙古—鄂霍次克、阿尔泰—华北北缘强地震带所围,似乎可以得出这是一个构造相对稳定的区域、其间不曾存在晚古生代以来的板块构造缝合线的结论。东北地区中、新生代发生的大规模拆离—走滑使得原本较为完整的、稳定的块体发生了分割与位移。如此,一个完整的地块被切割成多个块体(即所称的众多"微板块")。东北及邻区晚古生代构成了一个巨大地块:佳—蒙地块。佳—蒙地块是北由蒙古—鄂霍次克缝合带、南由西拉木伦河—延吉缝合带、东由中锡霍特俯冲带所围限的一个晚古生代稳定的大地构造单元。     

吉黑造山带二叠纪生物古地理区划及特征

吉黑造山带其实质是天山－兴安造山带的东延部分,夹持于华北板块与西伯利亚板块之间,北部为以佳木斯地块为中心的地块群,南部为古生代陆缘褶皱带,东北部为中生代走滑拼贴的那丹哈达－比金地体。该造山带是由于晚古生代末期华北板块与北部中间地块间的陆－陆碰撞对接和中生代太平洋板块的斜向俯冲挤压形成的。二叠纪是吉黑造山带古地理、古气候和古构造变化最为显著的时期,反映在生物古地理方面的生物混生和交融也非常明显。详细研究该时期生物古地理格局与演化是解决造山带二叠纪古构造格局的关键。     

新疆东部新元古代晚期和古生代构造格局及其演变

基于笔者近20年来对新疆东部地质构造的研究和对前人地质地球物理资料的深入分析，本文系统讨论了新疆东部新元古代晚期和古生代的地壳形成与演化。该区古生代的构造单元被划分为阿尔泰地块、额尔齐斯断裂带、东准噶尔古生代造山带、准噶尔地块、东天山造山带和库鲁克塔格地块。该区古生代地壳构造演化包括震旦纪-石炭纪洋陆格局的变迁、石炭纪末至二叠纪后碰撞壳幔相互作用等两个阶段。其洋陆格局的变迁包括古生代早期萨彦洋、早古生代阿尔曼太尔洋、晚古生代卡拉麦里洋、古生代北天山洋和南天山洋的打开与关闭，其中两个天山洋盆可能为一个洋盆，大体上可以对比为中亚地区的古亚洲洋北支斋桑洋，阿尔曼太洋和卡拉麦里洋可能为西伯利亚古陆的边缘洋盆；而古亚洲洋南支的乌拉尔一南天山洋向东是否延伸到新疆东部，还有待于进一步研究。新疆东部的后碰撞构造演化包括三期重大地质事件：①300Ma前后的以中酸性为主的大规模岩浆活动；②280Ma前后的包括幔源岩浆在内的双峰式岩浆活动；⑧二叠纪中晚期(可能延续到三叠纪)的大规模地壳走滑运动。在此基础上，对新疆东部新元古代晚期和古生代构造演化与古亚洲洋演变的关系进行了探讨，并对仍然存在的主要相关问题进行了总结和归纳。     

内蒙古锡林浩特宝力根地区哲斯腕足动物群的发现及其生物古地理分区

内蒙古锡林浩特宝力根苏木乌勒吉图剖面哲斯组灰岩中发现大量腕足化石,共计18属23种。该腕足群落以长身贝目、石燕目为主,化石组合面貌具有典型的哲斯动物群特征。可将其由下至上划分为2个组合：ⅠYakovlevia mammata-Anidanthus rugousa组合;ⅡAnidanthus ussuricus-Rhombospirifer zhesiensis组合。其中,组合Ⅰ地质年代为Kungurian期—Roadian期,组合Ⅱ地质年代为Wordian期。通过对腕足冷暖属性特征研究,发现组合Ⅰ属于凉水型-分异型,组合Ⅱ属于凉水型-微渗型。对比其他地区的哲斯腕足动物群可以看出,Kungurian期—Wordian期哲斯腕足动物群由单一的凉水型向混生型演化,造成该变化的原因可能是西伯利亚板块和华北板块间的构造运动和晚古生代冰期作用。     

北山造山带南部早古生代构造演化：来自花岗岩的约束

北山造山带是中亚造山带的重要组成部分,处于天山造山带和索仑缝合带之间的关键构造位置,对认识中亚造山带的构造演化和古亚洲洋的最终闭合具有重要意义。本文选择北山造山带南部早古生代桥湾糜棱岩化花岗岩和金塔钾长花岗岩进行了LA-ICP-MS锆石U-Pb年代学、LA-MC-ICP-MS锆石Hf同位素和地球化学研究。结果表明,桥湾糜棱岩化花岗岩和金塔钾长花岗岩均形成于~430Ma,岩浆结晶锆石的二阶段Hf模式年龄分别为2.14~2.37Ga和1.32~1.72Ga。样品中含有少量继承锆石,继承锆石的Hf同位素特征与北山南部新元古代花岗质片麻岩类似。在地球化学组成上,两者均具有高的SiO2含量(73.18%~75.00%),弱过铝质,富集Rb、U、K等元素,亏损Ba、Nb、Ta、和Sr、P、Ti等元素的特点,类似于北山南部其它早古生代钾长花岗岩。它们的岩浆均起源于北山南部古老地壳基底的部分熔融,金塔钾长花岗岩可能还有幔源岩浆或新生下地壳的贡献。这同时也暗示了北山南部石板山地块与敦煌地块具有显著不同的地壳基底组成。结合敦煌地块早古生代高压麻粒岩的研究结果,我们认为北山南部早古生代岩浆活动可能与敦煌地块向北山南部石板山地块的碰撞、俯冲作用有关,反映了中亚造山带南缘的北山造山带在早古生代经历了造山带中微陆块与周缘克拉通碰撞拼贴的造山事件。     

大别-苏鲁造山带在朝鲜半岛可能的构造表现

在晚二叠世—早三叠世期间,中国的华北与扬子板块俯冲碰撞形成了大别-苏鲁造山带。针对这次碰撞作用向东在朝鲜半岛的延伸方式,近些年来不同学者提出了多种模式,但都有其局限性。通过比较临津江带、沃川带与大别造山带之间的构造活动关系,结合已有的变质地质学和地质年代学数据,建立了大别-苏鲁造山带在朝鲜半岛的东延模式。推测自临津江带至沃川带构成了一条较完整的中生代造山带,即大别-苏鲁造山带在朝鲜的东部延伸,原来意义上的“京畿地块”已不复存在。而岭南地块上与华北板块相似的信息可能是造山作用后期伸展拆离作用下来自朝鲜半岛北部的外来构造岩片所致。     

阿拉善地块北缘恩格尔乌苏地区发现志留纪侵入体

阿拉善地块北缘地区位于中亚造山带的南缘中段,连接了兴蒙造山带和北山造山带等构造单元,其古生代的构造演化对于中亚造山带南缘构造单元的对比连接具有重要的意义,是研究中亚造山带古生代构造演化的关键位置。统计归纳近年来阿拉善地块北缘地区的年代学数据发现,该地区的岩浆活动主要集中在晚古生代期间,特别是二叠期间,尚没有早古生代侵入岩的报道。恩格尔乌苏蛇绿混杂岩是阿拉善地块北缘地区出露的一条重要蛇绿岩带,本次研究在该混杂岩带中发现了早古生代的黑云母花岗岩。通过锆石LA-ICP-MS U-Pb年代学测试发现其时代为423±4.5 Ma和434±1Ma,代表了其岩浆结晶年龄,表明该侵入岩形成于志留纪期间,是阿拉善地块北缘地区最早发现的早古生代侵入体之一。该志留纪岩体的发现,表明恩格尔乌苏混杂岩在带志留纪期间已经出现岩浆活动,具有多期活动的特征。该志留纪岩体的发现,是研究、认识阿拉善地块北缘地区早古生代构造环境的重要对象,对于连接对比东、西相邻构造单元具有重要的意义。结合相邻白山组地层的碎屑锆石时代及晚泥盆世侵入岩的发现等研究成果推断,阿拉善地块北缘地区在早古生代开始就存在岩浆活动,该地区可能并非是早古生代的稳定被动大陆边缘。     

朝鲜半岛咸北地区晚二叠世基性火山岩的地球化学特征:岩石成因与地质意义

晚古生代火山作用既是探究朝鲜半岛北部大地构造归属的基本要素,又是认识东北亚大陆两大构造域转折之际地球动力学过程的关键窗口。针对咸北地区会宁基性火山岩开展的离子探针锆石U-Pb年代学和地球化学研究表明,其喷发时代为晚二叠世(257±3Ma);主要岩石类型包括玄武安山岩和安山岩,其Si O2含量介于51.9%~55.3%,Mg#变化于40~58,属于钙碱性系列;岩石富集大离子亲石元素、亏损高场强元素(如Nb,Ta,Ti),并具有高正的锆石εH f(t)(+10~+16)值。元素-同位素地球化学示踪指示该基性火山岩的岩浆源区为俯冲沉积物熔体交代而形成的不均一岩石圈地幔,其部分熔融则可能归因于俯冲后的板内伸展背景。会宁基性火山岩不仅为判定咸北地块属于中亚造山带在朝鲜半岛的东延部分提供了岩石学证据,而且与中国相邻地块上的同期岩浆事件一道,构成见证古亚洲洋东段沿西拉木伦-长春-延边一线断裂带最终闭合的空间标记。     

小秦岭-北秦岭地区铀成矿的构造演化背景

小秦岭-北秦岭地区位于秦岭造山带东部,长期处于华北板块、秦岭微地块和扬子板块边缘构造活动地带,具备良好的古陆块边缘铀成矿条件。分析多期次不同类型铀成矿作用与相应的秦岭造山带构造演化背景的关系,有利于理解区域铀成矿规律和创新铀矿成因理论。文章通过对区内典型铀矿床（点）进行对比分析,总结出铀成矿的成因机制,并以秦岭造山带形成与演化的视角来分析不同类型铀成矿作用发生的构造背景。分析显示在小秦岭-北秦岭构造带的华阳川地区、蓝田牧护关岩体以及“商南-丹凤三角区”等3地,存在伟晶岩型、碳酸岩型和构造岩浆热液叠加改造型等3种铀矿类型,成矿期次历经古元古代、古生代奥陶纪—泥盆纪、早中生代三叠纪、晚中生代侏罗纪以来等4个时期。研究结果表明北秦岭-小秦岭地区的铀矿具有“古老地层+深大断裂+岩浆作用”耦合成矿的成因机制,铀成矿作用均发生在秦岭造山带块体之间相互作用的由碰撞转向伸展的构造体制转换阶段。     

朝鲜半岛古生代中期-中生代早期构造格局

古生代中期─中生代早期朝鲜半岛发生了两次主要构造事件, 即古生代中期朝鲜半岛中部临津江构造带的活动和古生代晚期-中生代早期朝鲜半岛北部豆满江造山带(咸北地块) 的碰撞拼接事件。临津江带的地层、化石和构造等特征研究表明临津江带形成于志留纪末-泥盆纪初, 结束于中生代三叠纪松林期; 根据咸北地块沉积地层的岩浆岩岩石学、年代学资料, 认为豆满江造山带的碰撞拼接时期可能是二叠纪-三叠纪。黄海地球物理、地震研究, 朝鲜半岛大地构造和沉积盖层研究结果表明苏2鲁高压变质带没有延伸到临津江带, 而是被近南北向纵贯朝鲜西海的断裂右行错移到了济洲岛以南; 咸北地块和输城川断裂带的地质特征研究表明, 咸北地块可能与佳木斯地块相连接, 输城川断裂带可能与牡丹江断裂带相连接。     

Palinspastic Reconstruction for Tectonics of Northeast China and Its Vicinity

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Subdivision of the hida metamorphic complex, central Japan, and its bearing on the geology of the Far East in pre-Sea of Japan time

Petrological and structural characteristics of the regional metamorphic rocks in south-west Japan and in the Korean Peninsula make it possible to speculate on the geological correlation between Japan and the Asian continent prior to the opening of the Sea of Japan, a typical marginal sea. The Hida metamorphic complex, situated on the Sea of Japan side of southwest Japan, is subdivided into two distinct geological units, the Hida gneisses and the Unazuki schists. The Hida gneisses are polymetamorphosed Precambrian rocks, while the Unazuki schists occurring on its eastern and southern sides are low- to medium-grade metamorphic rocks originating from Upper Paleozoic deposits. Sedimentary facies and other geological features suggest that the Hida gneisses were the basemen of the Unazuki schists. Consequently, the geotectonic framework of southwest Japan is revised from north to south as follows: Hida gneiss region (Precambrian massif) Unazuki zone (late Permian intermed. metamorphic belt) Circum-Hida tectonic zone (Mid- to Late Paleozoic melange zone) Mino-Tanba terrain (Late Paleozoic to Mesozoic geosynclinal region) and so on.The Unazuki zone is similar to the Okcheon zone in the Korean Peninsula in respect of age, lithology and biofacies of sedimentary rocks as well as the age and type of regional metamorphism. Furthermore, the Hida gneisses and the Gyeonggi polymetamorphosed Precambrian gneisses in the Korean Peninsula are similar in the apparent baric type of metamorphism, radiometric ages and the relationship with the overlying metamorphosed formations. The similarity of the geotectonic frameworks of southwest Japan and the Korean Peninsula suggests that the Unazuki zone and the Okcheon zone once formed a continuous geotectonic unit. Thus we have a new geological coordinate in reconstructing the paleogeography prior to the opening of the Sea of Japan.     

朝鲜半岛与华北地质之对比研究:进展与问题

华北与朝鲜半岛山水相连,传统上称为中朝克拉通或中朝地块。但是中朝的地质对比研究并不深入。作者所在的研究组有幸同时与南北朝鲜半岛双方展开了合作研究达十年以上,内容涉及到前寒武纪基底、古生代沉积盆地、造山带演化、以及中生代岩浆活动。本文是对我们最新研究成果的一个简要总结,并提出一些仍未解决的或具争议的相关地质问题,希望以此能推动中朝地质和东北亚地质的研究。研究结果总结如下:(1)朝鲜半岛可划分为三个陆块,从北到南分别为狼林、京畿和岭南陆块,分别被临津江和沃川构造带分割;(2)三个陆块的前寒武纪基底虽有差别,但本文认为它们是相似的,并可与华北克拉通基底对比;(3)狼林地块的平南古生代盆地以及位于京畿陆块和岭南陆块之间的太白山古生代盆地与华北古生代盆地可对比;(4)临津江和沃川构造带的演化还有待深入研究,它们并不具有陆陆碰撞造山带的特征;(5)在京畿陆块西南部发现了含榴辉岩的三叠纪变质杂岩(洪城杂岩),其变质时代和岩石组合都可以和苏鲁造山带对比,不含超高压变质矿物。这表明苏鲁造山带东延到朝鲜半岛,并在半岛的京畿陆块西南缘登陆。但是洪城杂岩出露有限,没有穿越切割半岛的证据,因此可能沿半岛西部断裂局部分布或在半岛西缘尖灭,其空间分布需进一步研究;(6)中生代岩浆岩在朝鲜半岛广泛存在,三叠纪岩浆作用可能与印支期造山作用有关;侏罗纪和白垩纪的岩浆岩分布与华北在时代和空间分布上有所差别,晚白垩世岩浆岩在朝鲜半岛集中出露于庆尚盆地。本文还在最后一部分,提出了朝鲜半岛以及中朝对比研究中有争议的和尚需进一步研究的关键问题。     

A new concept on tectonic correlation between Korea, China and Japan: Histories from the late Proterozoic to Cretaceous

The Dabie–Sulu collision belt in China extends to the Hongseong–Odesan belt in Korea while the Okcheon metamorphic belt in Korea is considered as an extension of the Nanhua rift within the South China block. The Hongseong–Odesan belt divides Korea's Gyeonggi massif into northern and southern portions. The southern Gyeonggi massif and the Yeongnam massif are correlated with China's Yangtze and Cathaysia blocks, respectively, while the northern Gyeonggi massif is part of the southern margin of the North China block. The southern and northern Gyeonggi massifs rifted from the Rodinia supercontinent during the Neoproterozoic, to form the borders of the South China and North China blocks, respectively. Subduction commenced along the southern and eastern borders of the North China block in the Ordovician and continued until a Triassic collision between the North China and South China blocks. While subduction was occurring on the margin of the North China block, high-P/T metamorphic belts and accretionary complexes developed along the inner zone of southwest Japan from the Ordovician to the Permian. During the subduction, the Hida belt in Japan grew as a continental margin or continental arc. Collision between the North and South China blocks began in Korea during the Permian (290–260 Ma), and propagated westwards until the Late Triassic (230–210 Ma) creating the sinistral TanLu fault in China and the dextral fault in the Hida and Hida marginal belt in Japan. Phanerozoic subduction and collision along the southern and western borders of the North China block led to formation of the Qinling–Dabie–Sulu–Hongseong–Hida–Yanji belt.     

华北地块北缘晚古生代-中生代花岗岩体侵位深度及其构造意义

运用斜长石-角闪石温压计对华北地块北缘内蒙古隆起及燕山褶断带内不同时期花岗质侵入岩的结晶压力及侵位深度进行了估算。结果表明,晚古生代—早中生代期间,在内蒙古隆起及燕山褶断带之间,存在有强烈的差异性隆升及剥露过程,但这种差异性隆升及剥露在早侏罗世以来的表现则不明显。晚古生代—早中生代差异性隆升及剥露可能是导致内蒙古隆起上大量基底岩石出露、中—新元古代及古生代沉积盖层缺失及燕山褶断带中—新元古代及古生代沉积盖层大量保留的主要原因。内蒙古隆起强烈的隆升及剥露过程发生在晚石炭世—早侏罗世期间,其东部的剥露幅度比中东部明显偏小。晚古生代-早中生代期间内蒙古隆起的强烈剥露及其与燕山褶断带之间的差异性隆升可能与古亚洲洋板块向华北地块的俯冲、消减、碰撞及华北北缘区域性断裂(如平泉-古北口-赤城-尚义断裂、赤峰-围场-多伦断裂)的活动有关。燕山褶断带的强烈隆升与剥露发生则在晚侏罗世—早白垩世之后。晚体罗世—早白垩世以来,华北地块北缘南北两侧均有一次明显的剥露过程,这一剥露可能与本区及中国东部地壳强烈伸展有关。     

Tracking Paleozoic evolution of the South Korean Peninsula from detrital zircon records: Implications for the tectonic history of East Asia

The southern part of the Korean Peninsula preserves important records of the Paleozoic evolutionary history of East Asia. Here we present SHRIMP U–Pb ages of detrital zircon grains from Paleozoic metasedimentary successions (Okcheon and Joseon Supergroups, Yeoncheon Group, Taean Formation, and Pyeongan Supergroup) that are incorporated into the major Phanerozoic mountain belts (Okcheon and Hongseong-Imjingang Belts) in South Korea, providing new insights for provenances and paleotectonic evolution of the South Korean Peninsula during Paleozoic time. The zircon ages from our samples display two distinct spectra patterns in their presence/absence of Neoproterozoic and/or Paleozoic populations. Our results, together with the available data from the Korean Peninsula, suggest that: (1) the Early to Middle Paleozoic successions in the Okcheon Belt were deposited in continental margin setting(s) formed by Neoproterozoic intracratonic rifting, (2) the Middle Paleozoic metasedimentary rocks in the Imjingang belt can be interpreted as molasse and flysch sediments along an active continental margin, (3) the Late Paleozoic to Early Triassic Taean Formation along the western Gyeonggi Massif represents a syn- to post-collision deltaic complex of a remnant oceanic basin, and (4) the Late Paleozoic to possibly Early Triassic Pyeongan Supergroup in the Okcheon Belt might represent a wedge-top and/or foreland basin. The spatial and temporal discrepancy between the South Korean Peninsula and the Central China Orogenic Belt during Paleozoic might reflect lateral variations in crustal evolution history along the East Asian continental margin during the Paleo-Tethyan Ocean closure.     

华北块体、胶辽朝块体与郯庐断裂

华北块体（NCB）与胶辽朝块体（JLKB）是中朝板块东部从震旦纪（680Ma)开始裂解的两个不同的构造单元。两个块体的界线称古郯庐断裂（PTLF），古郯庐断裂位置与现今郯庐断裂（TLF）相吻合，即由合肥向北延伸，过渤海，经沈阳以东呈NE走向至吉林南部。古郯庐断裂带附近震旦纪碳酸盐岩中的强地震记录及相应的辉绿岩侵位，是中朝板块内部裂解的基本地质证据，古郯庐断裂带（板内地震带）与元古超大陆Rodinia的裂解时期是一致的。两个块体上，太古宙基底岩石不同；元古宙及古生代的发展历史有别，两个块体于晚石炭世的莫斯科期重新闭合。朝鲜半岛中部的临津江带曾被认为是大别-胶南造山带的东延部分，但临津江带只是一般性断裂，胶南超高压带在朝鲜半岛并未发现，朝鲜半岛南部主体与辽东半岛古生界相似，因此，将中朝板块的南界，也是较辽朝块体的南界置于朝鲜半岛之南，它与胶南造山带以黄海转换断层（YSTF）联结。辽宁省瓦房店（旧称复县）与山东省蒙阴含金刚石的金伯利岩分布在郯庐断裂带的东，西两侧，南北方向距离的550km。两地金伯利岩年龄值在500-450Ma之间，即中奥陶世末侵位。鉴于两地金伯利岩在岩相学，矿物学与侵位年龄等某些方面的相似性，又紧邻郯庐断裂两侧，有些地质学家认为二者在侵位时可能相距颇近，属同一岩省，因而将瓦房店与蒙阴两个金伯利岩岩省之间的距离总是用郯庐断裂的巨大平移来解释。郯庐断裂为切过岩石圈的深断裂，对比瓦房店与蒙阴两地岩石圈剖面的异同，应是判断郯庐断裂有无巨大平移的重要依据。通过对金伯利岩中地幔样品的研究，揭示出了两地岩体侵位时所穿越的古岩石圈剖面是很不一致的，表明二者当时并非连接一起或相距甚近图片者结合区域地质构造研究的新认识，发现它们实际是分别侵位于中朝板块的两个不同的构造单元上，两地距离与平移无关，不支持郯庐断裂左行走滑巨大平移的观点，本文期望这种交叉学科研究所提供的材料能有助于讨论中国东部这一巨型断裂系统的性质。     

Source Diversity of Ore Sulfur from Mesozoic-Cenozoic Mineral Deposits in the Korean Peninsula Region

Abstract: Sulfides from the Daebo Jurassic granitoids and some ore deposits from Korean Peninsula and Sikhote Alin occurring in different basement settings were analyzed for δ³⁴S values. Highly positive values were obtained from Jurassic Mo skarn deposit at Geumseong of the Ogcheon belt (average +13. 0%), Au‐quartz vein deposits at Unsan, North Korea (+6. 7%), and late Paleozoic Sn‐F deposit at Votnesenka (+8. 2%), Khanka massif, Russia. Together with published data of that region, regional variation of δ³⁴S values is shown across Korean Peninsula. Sulfur isotopic data published are compiled on 88 ore deposits, whose mineralization epochs belong to Cretaceous (58 deposits), Jurassic (25 deposits) and Precambrian (4 deposits) in South Korea. Average sulfur isotopic values vary across South Korea as follows: Cretaceous deposits in the Gyeongsang basin, +4. 8% ranging +1.2 ? +12.7‰ (n=28); Jurassic and Cretaceous deposits in the Sobaegsan massif, +3. 5% ranging 0.0 ? +7.8‰ (n=20); those of the Ogcheon belt, +6. 4% ranging ‐0.5 ? +15.4‰(n=19); those of the Gyeonggi massif, +5. 5% ranging +2.1 ? +9.0‰(n = 21). The δ³⁴S values of South Korea tend to be concentrated around +5. 5 permil, exhibiting little, if any, a systematic variation across the geotectonic belts. This tendency is seen also in North Korea and Northeast China within the Cino‐Korean Block, and may be called as Cino‐Korean type. Sulfur of this type is derived mostly from the crystalline basement. Khanka massif of Russia seems to have features of the Cino‐Korean type. In contrast, paired positive/negative belts corresponding to magnetite‐series/ilmenite‐series granitic belts are overwhelming in the Japanese Islands, especially in Southwest Japan. The similar trend is also seen in southern Sikhote Alin and northern Okhotsk Rim, which may be called as Japanese type. Source of the sulfur in this type is likely in the subducting oceanic slab for positive value and accreted sedimentary complex for the negative value, respectively. The Daebo granitoids have an average rock δ³⁴S value of +5. 3 permil, which should have reflected that of the source rocks in the continental crust. The ore sulfur heavier than this value may have been originated in other granitoids having even higher δ³⁴S values, or the ore fluids interacted directly with sulfate sulfur of the host evaporites or carbonate rocks. Rock isotopic values of granitoids and basement rocks need to be examined in future from the above point of view in mind.