CAJ | 학술논문

姑婆山–花山花岗岩基位于南岭花岗岩带的西段，为燕山早期多次岩浆侵位的产物。姑婆山–花山花岗岩基由东西向展布的姑婆山花岗岩体和花山花岗岩体组成，两岩体规模、形态及主体组成单元基本相同，且主体单元均为成矿岩体，但两岩体构造型式迥异。姑婆山花岗岩体具有外侵式、反环带构造型式，岩石能量较小、抗风化剥蚀能力较弱、形成较早的里松单元出露于岩体的中部，四周被岩石能量较大、抗风化剥蚀能力较强、形成较晚的望高和新路单元所环绕，地貌上对应的表现为岩体中央成凹陷盆地，四周为中山陡坡地形，由此导致岩体内水系向岩体中央盆地汇聚，并在岩体中央盆地及集中外泄的里松河河谷阶地内富集形成风化矿床；与此相反，花山花岗岩体具有内侵式、正环带构造型式，岩石能量较大、抗风化剥蚀能力较强、形成较晚的华美和望高单元位于岩体的中部，四周被岩石能量较小、抗风化剥蚀能力较弱、形成较早的里松等单元所环绕，地貌上对应的表现为岩体中央呈中山地形，四周多为低山丘陵，水系从岩体向外呈放射状分布，这种放射型水系不易于在岩体内部形成较大规模的风化矿床，砂锡及风化型稀土矿随河水搬运距离较远，最终在岩体外环(或边缘)地势较低的思勤江汇水盆地及河谷阶地内沉积富集形成大型砂锡及风化型稀土矿。姑婆山和花山两姐妹花岗岩体不同的构造型式是形成两岩体地貌景观差异的内在因素，同时也是导致两岩体风化矿床空间分布差异的根本原因。
고파산–화산화강암기위우남령화강암대적서단，위연산조기다차암장침위적산물。고파산–화산화강암기유동서향전포적고파산화강암체화화산화강암체조성，량암체규모、형태급주체조성단원기본상동，차주체단원균위성광암체，단량암체구조형식형이。고파산화강암체구유외침식、반배대구조형식，암석능량교소、항풍화박식능력교약、형성교조적리송단원출로우암체적중부，사주피암석능량교대、항풍화박식능력교강、형성교만적망고화신로단원소배요，지모상대응적표현위암체중앙성요함분지，사주위중산두파지형，유차도치암체내수계향암체중앙분지회취，병재암체중앙분지급집중외설적리송하하곡계지내부집형성풍화광상；여차상반，화산화강암체구유내침식、정배대구조형식，암석능량교대、항풍화박식능력교강、형성교만적화미화망고단원위우암체적중부，사주피암석능량교소、항풍화박식능력교약、형성교조적리송등단원소배요，지모상대응적표현위암체중앙정중산지형，사주다위저산구릉，수계종암체향외정방사상분포，저충방사형수계불역우재암체내부형성교대규모적풍화광상，사석급풍화형희토광수하수반운거리교원，최종재암체외배(혹변연)지세교저적사근강회수분지급하곡계지내침적부집형성대형사석급풍화형희토광。고파산화화산량저매화강암체불동적구조형식시형성량암체지모경관차이적내재인소，동시야시도치량암체풍화광상공간분포차이적근본원인。
The Guposhan-Huashan batholith is located in the western segment of the Nanling Range Granitic Belt. The batholith is made of multiple intrusive units emplaced in the Early Yanshanian of Mesozoic Era. The batholith includes the Guposhan pluton in the east and the Huashan pluton in the west. Both plutons are similar in size and shape and composed of similar ore–forming granites. The plutons show concentric zonation with contrasting emplacement mode. The Guposhan pluton was built in an outward incremental growth mode. Its earliest intrusive unit, the more mafic and less resistant (to weathering and erosion) Lisong intrusive unit with lower chemical energy, is located in the central part and surrounded by the younger, more felsic and resistant Wanggao and Xinlu intrusive units with higher chemical energy. Accordingly, the differential weathering and erosion resulted in a depression or a basin in the center which is surrounded by high, steep-sloped mountains. As such, the inward radial drainage pattern led to the formation of placer and residual ore deposits in the basin and in the Lisong River valley. In contrast, the Huashan pluton was built in an inward incremental growth mode with the younger Wanggao and Xinlu units in the central area. Therefore, the more felsic and resistant Wanggao and Xinlu granites form high mountains surrounded by low hills of the Lisong unit. The resulting drainage pattern is an outward radial pattern. Exploration in the past years has led to the discoveries of a number of large- and small- scale tin placer and weathering-type rare earth ore deposits in basins and river valleys around the periphery of the pluton.