Russian Journal of Pacific Geology最新文献

英文中文

The Ore Potential of the Late Mesozoic Ariadnensky Massif of Ultramafic, Mafic, and Granitoid Rocks (Sikhote-Alin Orogenic Belt) 中生代晚期超基性岩、黑云母岩和花岗岩的阿里亚德嫩斯基地块（锡克浩特-阿林造山带）的矿石潜力

IF 0.8 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Russian Journal of Pacific Geology

Pub Date : 2024-01-30 DOI: 10.1134/s1819714023060052

A. I. Khanchuk, V. P. Molchanov

Abstract

In the south of the Russian Far East, a new promising type of source of strategic and critically important metals (titanium, gold, platinum, niobium, hafnium, copper, antimony, etc.) has been discovered: these are complex ores and placers that are spatially and genetically related to the Late Mesozoic (Cenomanian?) synorogenic intrusions of ultramafic–mafic rocks of the Sikhote-Alin orogenic belt. One example is the Ariadnensky massif of ultramafic, mafic and granitoid rocks with gold-titanium mineralization in its mafic part, gold-antimony mineralization at the exocontact, and gold-copper mineralization in the circum-intrusive zone. The main mineralogical and geochemical features of these ore formations have been determined. The typomorphic properties of native gold from ultramafic rocks have been revealed. It is shown that mantle and crustal processes were involved in the formation of different types of ore. The materials we obtained provide new opportunities for the reassessment of potential of strategic metal resources in Primorye.

摘要在俄罗斯远东地区南部，发现了一种新的具有重要战略意义的金属（钛、金、铂、铌、铪、铜、锑等）来源：它们是与锡霍特-阿林造山带的中生代晚期（仙人掌?其中一个例子是由超基性岩、黑云母岩和花岗岩组成的阿里阿德年斯基岩块，其黑云母岩部分有金钛矿化，外接触带有金锑矿化，环侵入带有金铜矿化。这些矿层的主要矿物学和地球化学特征已经确定。揭示了超基性岩原生金的典型形态特征。研究表明，地幔和地壳过程参与了不同类型矿石的形成。我们获得的材料为重新评估滨海战略金属资源的潜力提供了新的机会。

{"title":"The Ore Potential of the Late Mesozoic Ariadnensky Massif of Ultramafic, Mafic, and Granitoid Rocks (Sikhote-Alin Orogenic Belt)","authors":"A. I. Khanchuk, V. P. Molchanov","doi":"10.1134/s1819714023060052","DOIUrl":"https://doi.org/10.1134/s1819714023060052","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In the south of the Russian Far East, a new promising type of source of strategic and critically important metals (titanium, gold, platinum, niobium, hafnium, copper, antimony, etc.) has been discovered: these are complex ores and placers that are spatially and genetically related to the Late Mesozoic (Cenomanian?) synorogenic intrusions of ultramafic–mafic rocks of the Sikhote-Alin orogenic belt. One example is the Ariadnensky massif of ultramafic, mafic and granitoid rocks with gold-titanium mineralization in its mafic part, gold-antimony mineralization at the exocontact, and gold-copper mineralization in the circum-intrusive zone. The main mineralogical and geochemical features of these ore formations have been determined. The typomorphic properties of native gold from ultramafic rocks have been revealed. It is shown that mantle and crustal processes were involved in the formation of different types of ore. The materials we obtained provide new opportunities for the reassessment of potential of strategic metal resources in Primorye.</p>","PeriodicalId":49583,"journal":{"name":"Russian Journal of Pacific Geology","volume":"49 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139646441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum to: Ferromanganese Crusts of the North Pacific Ocean 勘误：北太平洋铁锰结壳

IF 0.8 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Russian Journal of Pacific Geology

Pub Date : 2024-01-30 DOI: 10.1134/s1819714023060106

P. E. Mikhailik, A. I. Khanchuk, E. V. Mikhailik, V. A. Rashidov, D. P. Savelyev, N. V. Zarubina

An Erratum to this paper has been published: https://doi.org/10.1134/S1819714023060106

本文的勘误已发表： https://doi.org/10.1134/S1819714023060106

引用次数: 0

Provenance Evolution and Its Response to Sea Level Change in the South Yellow Sea since 1.0 Ma 1.0 Ma以来南黄海的产状演变及其对海平面变化的响应

IF 0.8 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Russian Journal of Pacific Geology

Pub Date : 2023-12-22 DOI: 10.1134/s1819714024010081

Zhonglei Wang, Yong Zhang, Bei-bei Mi, Zhongbo Wang, Yanguang Dou, Jingyi Cong, Jun Sun

引用次数: 0

Transformation of Gravity Anomalies in Large Territories (the Case of the Kuril Island Arc) 大片领土重力异常的变化（千岛群岛弧形地带的案例）

IF 0.8 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Russian Journal of Pacific Geology

Pub Date : 2023-12-01 DOI: 10.1134/s1819714023080055

Abstract

An algorithm and a program for transformation of gravity anomalies for large territories are presented. They use a spherical shape of the Earth and the geodetic coordinates of measuring points. The calculations employ the “quasi-ellipsoidal” model of V.V. Kavraisky, which allows the transition from the geodetic to the spherical coordinate system with increased accuracy. The algorithm is based on a sourcewise approximation of the field values located at the nodes of a regular grid with the latitude-dependent depths of the equivalent sources. To determine the source masses, the system of linear algebraic equations is solved by the steepest descent gradient method with an accelerated calculation of the step. The results of transformation of the gravitational field in the Bouguer reduction for the Kuril Island arc, the adjacent water and land areas located within 40°–54° N, 142°–162° E and having a total area of about 2.4 mln km², are presented. A slight difference between the results of recalculating the gravity anomalies into the upper half-space using the “spherical” and “quasi-ellipsoidal” models of the Earth is experimentally established.

摘要介绍了大面积地区重力异常转换的算法和程序。它们使用地球的球面形状和测量点的大地坐标。计算采用 V.V. Kavraisky 的 "准椭球 "模型，该模型允许从大地坐标系过渡到球面坐标系，并提高了精度。该算法以位于规则网格节点处的场值与等效源的纬度深度的源近似值为基础。为了确定源质量，线性代数方程组通过加速计算步长的最陡梯度法求解。本文介绍了位于北纬 40°-54°、东经 142°-162°、总面积约 240 万平方公里的千岛群岛弧形区域及邻近水域和陆地的布格尔还原重力场变换结果。实验证明，使用地球的 "球面 "模型和 "准椭球面 "模型重新计算上半空间重力异常的结果略有不同。

{"title":"Transformation of Gravity Anomalies in Large Territories (the Case of the Kuril Island Arc)","authors":"","doi":"10.1134/s1819714023080055","DOIUrl":"https://doi.org/10.1134/s1819714023080055","url":null,"abstract":"<span> <h3>Abstract</h3> <p>An algorithm and a program for transformation of gravity anomalies for large territories are presented. They use a spherical shape of the Earth and the geodetic coordinates of measuring points. The calculations employ the “quasi-ellipsoidal” model of V.V. Kavraisky, which allows the transition from the geodetic to the spherical coordinate system with increased accuracy. The algorithm is based on a sourcewise approximation of the field values located at the nodes of a regular grid with the latitude-dependent depths of the equivalent sources. To determine the source masses, the system of linear algebraic equations is solved by the steepest descent gradient method with an accelerated calculation of the step. The results of transformation of the gravitational field in the Bouguer reduction for the Kuril Island arc, the adjacent water and land areas located within 40°–54° N, 142°–162° E and having a total area of about 2.4 mln km<sup>2</sup>, are presented. A slight difference between the results of recalculating the gravity anomalies into the upper half-space using the “spherical” and “quasi-ellipsoidal” models of the Earth is experimentally established.</p> </span>","PeriodicalId":49583,"journal":{"name":"Russian Journal of Pacific Geology","volume":"31 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139759350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Variety of the Relief of the Northeastern Atlantic Volcanic Seamounts 东北大西洋火山海山地貌的多样性

IF 0.8 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Russian Journal of Pacific Geology

Pub Date : 2023-12-01 DOI: 10.1134/s1819714023080171

Abstract

The structures of the volcanic seamounts of the Atlantis-Great Meteor group, as well as areas of the archipelagos of the Cape Verde Islands, the Canary Islands and the Azores are analyzed. Their simplest type is a cone-like structure with one summit (Maio seamount). A more complex type consists of two closely spaced volcanic edifices (Nola seamount). The seamounts were also formed as a result of the activity of a central-type volcano and a fissure system (The-Paps seamount). A more complex morphology is presented by the mountains that were formed as a result of the activity of an underwater volcano of the central type, which was combined with the activity of three to four radial fissure volcanic systems (the Tropic seamount). The seamounts were also formed only during fissure eruptions (the Condor seamount, the Cadamosto seamount). These are ridges, tens of kilometers long without a clearly defined summit. All above types of seamounts, with their rise above sea level, subsequent abrasion and subsidence lead to the creation of flat-topped structures (guyots) (the Senghor seamount).

摘要分析了亚特兰蒂斯-大流星群以及佛得角群岛、加那利群岛和亚速尔群岛等群岛的火山海山结构。它们最简单的类型是有一个山顶的锥形结构（马约海山）。更复杂的类型是由两个紧密相邻的火山建筑物组成（诺拉海山）。海山也是由一个中心型火山和一个裂缝系统活动形成的（The-Paps 海山）。中央型水下火山与 3 至 4 个径向裂缝火山系统（热带海山）的活动结合形成的海山形态更为复杂。海山也是在裂隙喷发时才形成的（秃鹰海山、卡达莫斯托海山）。这些海脊长达数十公里，但没有明确的山顶。上述所有类型的海山，随着海平面的升高，随后的磨损和下沉导致了平顶结构（guyots）的形成（桑戈尔海山）。

引用次数: 0

Geological Setting and Gold–Bismuth Mineralization of the Namovskoe Deposit (Southern Sikhote-Alin) 纳莫夫斯科（Namovskoe）矿藏（南锡霍特-阿林）的地质构造和金铋矿化作用

IF 0.8 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Russian Journal of Pacific Geology

Pub Date : 2023-12-01 DOI: 10.1134/s1819714023060040

Abstract

Based on the results of a comprehensive geological, mineralogical, and geochemical study of ores of the Namovskoe deposit, new data on the specifics of mineralization were obtained. The ores of the deposit were formed in close relation to the Early Cretaceous monzonitoid magmatism against the background of active left-hand movements along the Middle Sikhote-Alin fault. The U–Pb dating of the ore-bearing dyke provided an age of 103 Ma. In addition to native Au, the ores of the deposit contain high concentrations of Ag, Bi, and Cu. A variety of Bi minerals were registered in the ores: sulfide (bismuthinite), telluride (hedleyite), sulfotellurides (tetradymite, joseite-А, and joseite-В), Ag sulfobismuthite (matildite), Pb–Bi sulfosalts (aschamalmite, cannizzarite, cosalite, lillianite, nuffieldite, and galenobismuthite), an intermetallic compound of Au (maldonite), and native Bi. Ag minerals were identified as well: chloride (cerargyrite), sulfide (acanthite), and telluride (hessite). The typomorphic patterns of ore minerals and the geological structure of the Namovskoe deposit assign it to the type of gold deposits formed in a transform continental margin setting. A mantle source of ore mineralization is suggested.

摘要根据对纳莫夫斯科矿床矿石进行的地质、矿物学和地球化学综合研究的结果，获得了有关矿化具体情况的新数据。该矿床矿石的形成与早白垩世单斜岩浆活动密切相关，其背景是沿中锡霍特-阿林断层的左旋运动十分活跃。含矿堤坝的 U-Pb 测定年龄为 103 Ma。除了原生金之外，该矿床的矿石还含有高浓度的银、铋和铜。矿石中含有多种铋矿物：硫化物（铋化物）、碲化物（hedleyite）、硫碲化物（tetradymite、joseite-А 和 joseite-В）、银硫铋化物（matildite）、铅铋硫化物（aschamalmite、cannizzarite、cosalite、lillianite、nuffieldite 和 galenobismuthite）、Au 的金属间化合物（maldonite）以及原生 Bi。此外还发现了银矿物：氯化物（cerargyrite）、硫化物（acanthite）和碲化物（hesite）。矿石矿物的类型形态和 Namovskoe 矿床的地质结构将其归类为在大陆边缘转化环境中形成的金矿床类型。建议矿石成矿来源于地幔。

{"title":"Geological Setting and Gold–Bismuth Mineralization of the Namovskoe Deposit (Southern Sikhote-Alin)","authors":"","doi":"10.1134/s1819714023060040","DOIUrl":"https://doi.org/10.1134/s1819714023060040","url":null,"abstract":"<span> <h3>Abstract</h3> <p>Based on the results of a comprehensive geological, mineralogical, and geochemical study of ores of the Namovskoe deposit, new data on the specifics of mineralization were obtained. The ores of the deposit were formed in close relation to the Early Cretaceous monzonitoid magmatism against the background of active left-hand movements along the Middle Sikhote-Alin fault. The U–Pb dating of the ore-bearing dyke provided an age of 103 Ma. In addition to native Au, the ores of the deposit contain high concentrations of Ag, Bi, and Cu. A variety of Bi minerals were registered in the ores: sulfide (bismuthinite), telluride (hedleyite), sulfotellurides (tetradymite, joseite-А, and joseite-В), Ag sulfobismuthite (matildite), Pb–Bi sulfosalts (aschamalmite, cannizzarite, cosalite, lillianite, nuffieldite, and galenobismuthite), an intermetallic compound of Au (maldonite), and native Bi. Ag minerals were identified as well: chloride (cerargyrite), sulfide (acanthite), and telluride (hessite). The typomorphic patterns of ore minerals and the geological structure of the Namovskoe deposit assign it to the type of gold deposits formed in a transform continental margin setting. A mantle source of ore mineralization is suggested.</p> </span>","PeriodicalId":49583,"journal":{"name":"Russian Journal of Pacific Geology","volume":"283 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139646276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Submarine Volcano 8.10 (Kuril Island Arc) 海底火山 8.10（千岛群岛弧形地带）

IF 0.8 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Russian Journal of Pacific Geology

Pub Date : 2023-12-01 DOI: 10.1134/s1819714023080031

Abstract

Submarine volcano 8.10, which is part of the South Iturup group of submarine volcanoes in the Kuril Island Arc (KIA), was studied using a proven technology of quantitative interpretation of hydromagnetic survey materials in combination with echo sounding, continuous seismoacoustic profiling, and analysis of petromagnetic properties and chemical composition of dredged rocks. The technology makes it possible to interpret directly from the original data without resorting to the procedure of their preliminary restoration in the nodes of a regular grid. The studies found that dredged andesite-basalts and andesites are representatives of different lava flows that have a single magma source but differ in the conditions and dynamics of crystallization. The main carrier of the natural residual magnetization of andesite-basalts is titanomagnetite with low Ti content and that for andesites is magnetite. Feeding channels and peripheral magma chambers are identified in the volcanic edifice. Submarine volcano 8.10 and other studied KIA volcanoes formed during geomagnetic inversions. The presence of hydroacoustic anomalies at the top of the volcano indicates that manifestations of underwater gas-hydrothermal activity in the southern part of the KIA are more significant than was thought until recently.

摘要对千岛群岛（Kuril Island Arc）南伊图鲁普海底火山群（South Iturup group of submarine volcanoes）中的 8.10 号海底火山进行了研究，研究中采用了一种行之有效的技术，即结合回声测深、连续地震声学剖面以及岩石磁特性和疏浚岩石化学成分分析，对水磁测量材料进行定量解释。该技术可直接根据原始数据进行解释，而无需按照规则网格节点对数据进行初步还原。研究发现，疏浚的安山岩-玄武岩和安山岩是不同熔岩流的代表，它们具有单一的岩浆源，但在结晶条件和动态方面有所不同。安山岩基性岩天然残余磁化的主要载体是钛含量低的钛磁铁矿，而安山岩的主要载体是磁铁矿。在火山结构中发现了馈源通道和外围岩浆室。8.10 号海底火山和其他研究过的 KIA 火山是在地磁倒转期间形成的。火山顶部出现的水声异常表明，基辅国际机场南部水下气体-热液活动的表现比人们最近认为的更为严重。

{"title":"Submarine Volcano 8.10 (Kuril Island Arc)","authors":"","doi":"10.1134/s1819714023080031","DOIUrl":"https://doi.org/10.1134/s1819714023080031","url":null,"abstract":"<span> <h3>Abstract</h3> <p>Submarine volcano 8.10, which is part of the South Iturup group of submarine volcanoes in the Kuril Island Arc (KIA), was studied using a proven technology of quantitative interpretation of hydromagnetic survey materials in combination with echo sounding, continuous seismoacoustic profiling, and analysis of petromagnetic properties and chemical composition of dredged rocks. The technology makes it possible to interpret directly from the original data without resorting to the procedure of their preliminary restoration in the nodes of a regular grid. The studies found that dredged andesite-basalts and andesites are representatives of different lava flows that have a single magma source but differ in the conditions and dynamics of crystallization. The main carrier of the natural residual magnetization of andesite-basalts is titanomagnetite with low Ti content and that for andesites is magnetite. Feeding channels and peripheral magma chambers are identified in the volcanic edifice. Submarine volcano 8.10 and other studied KIA volcanoes formed during geomagnetic inversions. The presence of hydroacoustic anomalies at the top of the volcano indicates that manifestations of underwater gas-hydrothermal activity in the southern part of the KIA are more significant than was thought until recently.</p> </span>","PeriodicalId":49583,"journal":{"name":"Russian Journal of Pacific Geology","volume":"16 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139759421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Ages and Isotope Compositions of the Gold–Silver Deposits and Occurrences of the Evensk Group (Okhotsk–Chukotka Volcanogenic Belt, Northeast Russia) 埃文斯克岩群（俄罗斯东北部鄂霍次克-楚科奇火山成因带）金银矿床和矿点的年龄与同位素组成

IF 0.8 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Russian Journal of Pacific Geology

Pub Date : 2023-12-01 DOI: 10.1134/s1819714023060076

Abstract

The existing and recently acquired data on the isotope ages and compositions of volcanogenic Au–Ag deposits and occurrences of the Evensk group (Okhotsk–Chukotka volcanogenic belt, Northeast Russia) are summarized. The K–Ar isotope and Rb–Sr isochron ages of Au–Ag ores from the studied deposits and occurrences are 82.7 ± 3–77.5 ± 3 Ma and 84.1 ± 2–79.7 ± 5 Ma, respectively. Au–Ag mineralization was formed within ~5 Ma. Au–Ag mineralization typical of productive ore stages and practically unaffected by later thermal processes is characterized by low initial ⁸⁷Sr/⁸⁶Sr₍₀₎ = 0.7055–0.7059 ratios, which are close to the initial ⁸⁷Sr/⁸⁶Sr₍₀₎ ratios in wall-rock metasomatites (0.7033–0.7082) and unaltered host rocks (0.7045–0.7048), thus indicating a pronounced predominance of mantle Sr in the ores. The composition points of ore Pb on the ²⁰⁷Pb/²⁰⁴Pb–²⁰⁶Pb/²⁰⁴Pb evolution diagram are grouped in close proximity to the Pb isotope composition points in the depleted mantle with a trend towards the subduction-related volcanic rocks typical of the continental margin. A close genetic relationship between the ore and magmatic processes has been confirmed. It is assumed that this relationship is due to the functioning of a single mantle basaltic chamber, which served as a source of metal-bearing fluids and is probably the primary source of Au and Ag.

摘要总结了关于埃文斯克群（俄罗斯东北部鄂霍次克-楚科奇火山成因带）火山成因金-银矿床和矿点的同位素年龄和组成的现有和最新数据。所研究矿床和矿点的金银矿石的 K-Ar 同位素和 Rb-Sr 等时年龄分别为 82.7 ± 3-77.5 ± 3 Ma 和 84.1 ± 2-79.7 ± 5 Ma。金银矿化是在 ~5 Ma 内形成的。金-银矿化是典型的高产矿石阶段，几乎不受后期热过程的影响，其特征是初始 87Sr/86Sr(0) = 0.7055-0.7059 比率较低，与壁岩变质岩（0.7033-0.7082）和未变质母岩（0.7045-0.7048）中的初始 87Sr/86Sr(0) 比率接近，从而表明矿石中地幔 Sr 明显占主导地位。矿石铅在 207Pb/204Pb-206Pb/204Pb 演化图上的组成点与贫化地幔中的铅同位素组成点相近，并有向大陆边缘典型的俯冲相关火山岩靠拢的趋势。矿石与岩浆过程之间的密切遗传关系已经得到证实。据推测，这种关系是由于单一地幔玄武岩室的作用造成的，该玄武岩室是含金属流体的来源，可能是金和银的主要来源。

{"title":"The Ages and Isotope Compositions of the Gold–Silver Deposits and Occurrences of the Evensk Group (Okhotsk–Chukotka Volcanogenic Belt, Northeast Russia)","authors":"","doi":"10.1134/s1819714023060076","DOIUrl":"https://doi.org/10.1134/s1819714023060076","url":null,"abstract":"<h3>Abstract</h3> <p>The existing and recently acquired data on the isotope ages and compositions of volcanogenic Au–Ag deposits and occurrences of the Evensk group (Okhotsk–Chukotka volcanogenic belt, Northeast Russia) are summarized. The K–Ar isotope and Rb–Sr isochron ages of Au–Ag ores from the studied deposits and occurrences are 82.7 ± 3–77.5 ± 3 Ma and 84.1 ± 2–79.7 ± 5 Ma, respectively. Au–Ag mineralization was formed within ~5 Ma. Au–Ag mineralization typical of productive ore stages and practically unaffected by later thermal processes is characterized by low initial <sup>87</sup>Sr/<sup>86</sup>Sr<sub>(0)</sub> = 0.7055–0.7059 ratios, which are close to the initial <sup>87</sup>Sr/<sup>86</sup>Sr<sub>(0)</sub> ratios in wall-rock metasomatites (0.7033–0.7082) and unaltered host rocks (0.7045–0.7048), thus indicating a pronounced predominance of mantle Sr in the ores. The composition points of ore Pb on the <sup>207</sup>Pb/<sup>204</sup>Pb–<sup>206</sup>Pb/<sup>204</sup>Pb evolution diagram are grouped in close proximity to the Pb isotope composition points in the depleted mantle with a trend towards the subduction-related volcanic rocks typical of the continental margin. A close genetic relationship between the ore and magmatic processes has been confirmed. It is assumed that this relationship is due to the functioning of a single mantle basaltic chamber, which served as a source of metal-bearing fluids and is probably the primary source of Au and Ag.</p>","PeriodicalId":49583,"journal":{"name":"Russian Journal of Pacific Geology","volume":"283 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139646439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Arc-Parallel Strike-Slip Faulting in an Island Arc under Arc-Normal Subduction: The Case of Kamchatka 弧正俯冲下岛弧内的弧平行走滑断裂:以堪察加半岛为例

4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Russian Journal of Pacific Geology

Pub Date : 2023-10-01 DOI: 10.1134/s1819714023050044

A. I. Kozhurin, T. K. Pinegina, V. V. Ponomareva

引用次数: 0

The Lithosphere Structure in the Northern Part of the Southern Sikhote-Alin Region According to the Magnetotelluric Sounding Data 根据大地电磁测深资料研究南锡霍特-阿林地区北部岩石圈结构

4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Russian Journal of Pacific Geology

Pub Date : 2023-10-01 DOI: 10.1134/s1819714023070035

V. B. Kaplun, A. K. Bronnikov

引用次数: 0

首页上一页

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Russian Journal of Pacific Geology

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀