CAJ | 학술논문

以老湾金矿带上上河-彭家老庄、老湾-盛老庄金矿床为研究对象，通过野外地表和坑道观察，进行断裂产状统计、配套分析及构造性质与矿化类型耦合关系的研究，确立了老湾金矿带控矿构造体系性质及组合型式。上上河-彭家老庄金矿床以石英脉型矿化较为发育为特点，控矿断裂属走滑构造体系中的R型张扭性裂隙带，向北陡倾，走向(290°~310°)与主剪切带方向(286°)交角约为15°，具右行剪切特征，滑距约10 m。老湾-盛老庄矿床以蚀变岩型矿化为特征，充填脉型矿化不发育，其金矿控矿断裂属 P 型压扭性裂隙，向南缓倾，其总体走向近东西(约92°)，与主剪切带方向的另一端交角约15°。3条规模较大的断裂蚀变带平面上右型侧列特点反映其滑移方向与上上河-彭家老庄控矿断裂滑移方向一致。综合整个矿带断裂产状及矿化信息，认为老湾金矿带控矿构造总体为以老湾和松扒断裂为边界断裂，由里德尔剪切体系中的P型和R型剪切带连结形成的辫状右行走滑剪切带。结合桐柏造山带区域地质演化历史，分析认为该脆性断裂构造带是早期韧性剪切带继承性演化的结果，反映桐柏造山带不同构造块体间斜向碰撞及随后地壳抬升作用的动力学演化过程。老湾金矿带右行走滑构造体系与成矿作用的耦合关系对矿床成因提供重要地质约束。
이로만금광대상상하-팽가로장、로만-성로장금광상위연구대상，통과야외지표화갱도관찰，진행단렬산상통계、배투분석급구조성질여광화류형우합관계적연구，학립료로만금광대공광구조체계성질급조합형식。상상하-팽가로장금광상이석영맥형광화교위발육위특점，공광단렬속주활구조체계중적R형장뉴성렬극대，향북두경，주향(290°~310°)여주전절대방향(286°)교각약위15°，구우행전절특정，활거약10 m。로만-성로장광상이식변암형광화위특정，충전맥형광화불발육，기금광공광단렬속 P 형압뉴성렬극，향남완경，기총체주향근동서(약92°)，여주전절대방향적령일단교각약15°。3조규모교대적단렬식변대평면상우형측렬특점반영기활이방향여상상하-팽가로장공광단렬활이방향일치。종합정개광대단렬산상급광화신식，인위로만금광대공광구조총체위이로만화송배단렬위변계단렬，유리덕이전절체계중적P형화R형전절대련결형성적변상우행주활전절대。결합동백조산대구역지질연화역사，분석인위해취성단렬구조대시조기인성전절대계승성연화적결과，반영동백조산대불동구조괴체간사향팽당급수후지각태승작용적동역학연화과정。로만금광대우행주활구조체계여성광작용적우합관계대광상성인제공중요지질약속。
Focusing on the Shang Shanghe-Peng Jialaozhuang and Laowan-Sheng Laozhuang gold deposits of the Laowan gold metallogenic belt, Tongbai Mountains, the authors investigated the structural nature and assembly patterns of ore-controlling structural zone of the Laowan gold belt based on field investigation, mine channel observation, statistical analysis of fault attitude and assorting, and discussed the coupling between property of fault and mineralization type. The Shang Shanghe-Peng Jialaozhuang gold deposit has well-developed quartz vein type-mineralization, and its ore-controlling faults are characterized by R-type tension-shear fracture of Reidel shear structure, steep dipping northward, trending 290°~310° which strike at an angle of about +15° to the principal shear zone (286°), 10 m of displacement by dextral strike-slip. The Laowan-Sheng Laozhuang gold deposit has altered rock type mineralization without quartz vein. Its ore-controlling faults are characterized by P-type compression-shear fracture of Reidel shear structure, gently dipping southward, trending about 92°, which strike at an angle of about 15° to the principal shear zone (286°), and dextral strike-slip is reflected by the right echelon arrangement of its three large fracture alteration belts. Integrating the information of faults and mineralization of the whole gold belt, we concluded that the ore-controlling fault system of gold belt is a braided dextral strike-slip shear zone by linkages between R and P shears of Reidel shear zone bounded by the Laowan and Songpa faults. Combined with the regional geological evolution of the Tongbai orogenic belt, it is proposed that the brittle shear zone of the Laowan gold belt was as a consequence of further development of early ductile shear zone, reflecting the dynamic mechanism of oblique collision between different tectonic blocks followed by uplift of the Tongbai orogenic belt. The coupling relationship between the dextral strike-slip fault ore-controlling system of the Laowan gold belt and gold mineralization provides important geological constraint on genesis of gold deposit.