Abstract:Granites serve as critical indicators of crust-mantle material cycling. Their genetic evolution provides essential constraints for deciphering continental crustal accretion-differentiation processes, unraveling the dynamics of orogenic mechanisms, and elucidating the evolution of deep-seated geochemical reservoirs. To constrain the Late Mesozoic tectonic evolution of the Yanshan Fold Belt along the northern margin of the North China Craton, we conducted systematical investigations of the Shayukou granites in Beijing. These investigations included petrographic analysis, zircon U-Pb geochronology, whole-rock major and trace element geochemistry, and Lu-Hf isotopic analyses. Zircon U-Pb concordant ages from the Shayukou monzogranite yield 134±1, 132±1, 132±1, 131±3, 130±4 and 133±2 Ma, respectively, constraining the pluton emplacement to the Early Cretaceous. Geochemical analyses reveal the following characteristics: the Shayukou monzogranites possess high silica (SiO₂ = 63.70%～69.13%), alkali enrichment (Na₂O+K₂O = 9.48%~10.81%), and peraluminous composition (A/CNK=1.05~1.13 and A/NK=1.26~1.29), classified as high-K calc-alkaline I-type granites. The rocks exhibit pronounced enrichment in large-ion lithophile elements (LILEs; e.g., Rb, K, Ba) and light rare earth elements (LREEs), coupled with depletion in high-field-strength elements (HFSEs; e.g., Nb, Ta, Ti). Diagnostic features, including elevated K₂O, Sr, (La/Yb)_N ratios, and suppressed MgO, Y, and Yb contents, collectively characterize them as C-type adakites. Zircons from the Shayukou monzogranites exhibit εHf(t) values ranging from -23.84 to -19.76, with two-stage Hf model ages (t^C_DM) of 3 768~3 408 Ma, indicating derivation from the partial melting of Paleoarchean crust. The low zircon saturation temperatures, ranging from 637°C to 699℃, classify the monzogranite as a low-temperature granite, suggesting the generation of magma involved infiltration of external fluids. Integrated with regional tectonic evolution, the Shayukou granite formed in a setting associated with the subduction of the Paleo-Pacific Plate. The underplating of mantle-derived magma, along with fluid fluxing, initiated the partial melting of thickened Archean igneous lower crust. Subsequently, the magma underwent limited fractional crystallization and crystallized at low temperatures.

Abstract:The Triassic volcanic rocks in the East Kunlun Orogenic Belt (EKOB) hold valuable magmatic-tectonic information, serving as a crucial probe to investigate the processes of the Paleo-Tethys orogeny. This study focuses on the Middle Triassic Naocangjiangou Formation and the Late Triassic Elashan Formation volcanic rocks, emphasizing petrology, zircon U-Pb geochronology, and zircon trace elements geochemistry to provide key evidence for the magmatic-tectonic evolution of the EKOB during the Triassic. The Naocangjiangou Formation is predominantly composed of dacites, while the Elashan Formation primarily consists of rhyolites and andesites. Geochronological results indicate that the dacites of the Naocangjiangou Formation formed during the Middle Triassic (249~243 Ma), whereas the rhyolites and andesites of the Elashan Formation formed in the Late Triassic (221~219 Ma). Zircons from the Middle Triassic dacites can be classified into two types based on Ti content: low-Ti (1.42×10^-6 to 4.83×10^-6) and high-Ti (3.25×10^-6 to 72.5×10^-6). The low-Ti zircons exhibit lower rare earth element (REE) contents (561×10^-6 to 1 190×10^-6), while the high-Ti zircons have higher REE contents (1 817×10^-6 to 6 236×10^-6). Late Triassic andesitic magmatic zircons show relatively high Ti contents (11.3×10^-6 to 31.2×10^-6) and lower REE contents (∑REE = 312×10^-6 to 1 107×10^-6), whereas Late Triassic rhyolitic zircons exhibit lower Ti contents (1.70×10^-6 to 8.58×10^-6) and REE contents (355×10^-6 to 1 670×10^-6). Zircon genesis analysis reveals that the high-Ti zircons in the Middle Triassic dacites are hydrothermal in origin, while the low-Ti zircons from the Middle Triassic and all Triassic zircons from the Late Triassic are of typical magmatic origin. Zircon Ti thermometry and crustal thickness studies indicate a significant increase in magmatic temperatures and crustal thickening in the EKOB between 243 Ma and 219 Ma. Synthesizing regional geological data, this study concludes that the EKOB experienced continuous subduction of the Paleo-Tethyan oceanic crust during the Middle Triassic, followed by crustal thickening due to collision in the Late Triassic. Notably, no significant lithospheric thinning occurred in the EKOB during the Triassic. This research further demonstrates that zircon trace element compositions cannot reliably reveal the tectonic settings of felsic magmatic rocks in orogenic belts, underscoring the need for cautious application of this method.

Abstract:The late Mesoproterozoic igneous rocks in the western margin of Yangtze Block are important for understanding the tectonic evolution and its role in reconstruction of the Rodinia supercontinent. In this paper, we report new zircon U-Pb ages, whole rock major and trace elements, and Nd-Hf isotopic analyses of the plagioclase amphibolites and granites in the Cuoke area on the western margin of the Yangtze Block. Geochronological results show that the granites and plagioclase amphibolites have similar late Mesoproterozoic zircon U-Pb ages of 1 160.5 Ma and 1 170.2 Ma, constituting a bimodal igneous assemblage. The plagioclase amphibolites belong to the tholeiite series and characterized by enrichment in LREEs and LILEs, and have OIB-like affinities with No obvious Nb and Ta anomalies, and with positive εNd(t) and εHf(t) values, indicating that they were derived from the asthenospheric mantle source. The granites belong to the peralkaline A-type series and characterized by have high Fe/Mg and Ga/Al ratios, with positive εNd(t) value and εHf(t) values, indicating that they were derived partially from the newly formed crust. Geochemical characteristics indicate that the Cuoke plagioclase amphibolite and granite were likely formed in an intra-plate rift basin on the passive continental margin, and are unrelated to the Grenvillian Orogen in the western Yangtze Block. Based on previous research results, it is believed that the western margin of the Yangtze Block during the late Mesoproterozoic belonged to a passive continental margin rift environment, and the Yangtze Block was in the peripheral rather in the center in the configuration of Rodinia.

Abstract:The Aizi pluton in the north of Guangdong is located in the central-western part of the Guidong complex pluton and consists of biotite granite. Currently, research on the formation age and genesis of this rock mass is weak, which is helpful to perfect the magmatic activity pedigree in the eastern Guizhou area, and provide new constraints on the petrogenesis and tectonic background. In this paper, LA-ICP-MS zircon U-Pb chronology, mineral-petrogeochemistry and Hf-Nd isotopes have been studied for Aizi biotite granite. The mineralogical characteristics indicate that the zircons in the Aizhi biotite granite are magmatic zircons, and the apatites are fluorapatites. The zircon U-Pb dating results indicate that the emplacement age of the Aizhi biotite granite is 159±1 Ma, which is a product of the early Yanshanian in South China. The geochemical characteristics of the rocks reveal a SiO₂ content ranging from 67.93% to 69.80%, a high total alkali content (K₂O+Na₂O=7.32% to 7.53%) and A/CNK ratio of 0.95 to 0.99. The rocks are enriched in Rb, Th, and U, while depleted in elements such as Ba, Nb, Ta, Sr, Zr, and Hf. The LREE/HREE ratio varies between 7.24 and 10.17, with a pronounced negative Eu anomaly (δEu=0.43 to 0.50). The εHf(t) values of the Aizizi biotite granite range from -8.7 to -5.4, while the εNd(t) values range from -9.3 to -9.1, corresponding to t_DM2 values of 1 725～1 519 Ma and 1 711～1 689 Ma, respectively. The above geochemical and isotopic characteristics indicate that the Aizhi biotite granite belongs to the high-potassium calc-alkaline series, quasi-aluminous S-I transitional granite, which is mainly formed by partial melting of Paleo-mesoproterozoic crustal-derived arenite under medium to high temperature and low pressure. Comprehensive studies suggest that the Aizhi biotite granite formed in a tectonic setting of lithospheric extension and thinning caused by the subduction of the Pacific plate.

Abstract:The Xiwanggou mafic-ultramafic complex is located in the eastern segment of the Central Kunlun Zone and the magma differentiation is sufficient with lithologies consisting of gabbro facies, pyroxenite facies, and peridotite facies. Amphibole preserves crucial information regarding magmatic evolution and the geological setting of its formation, and it is ubiquitously present across diverse lithologies within Xiwanggou complex. In this study, we use the characteristics of major and trace elements contents in amphiboles, in conjunction with whole-rock geochemistry and the major element characteristics of plagioclases, to discuss the petrogenesis and magmatic evolution of the complex. The findings offer novel constraints on the tectonic evolution of the East Kunlun spanning from the Late Paleozoic to the Early Mesozoic. Experimental results demonstrate that all the amphiboles are mainly classified as pargasite and Mg-hastingsite of magmatic origin, bearing the typical hallmarks of subduction amphiboles. Calculations indicate that the crystallization at the range of 889~971℃, 191~280 MPa, △NNO+0.2~+1.8, and the magma water content is 2.8%~4.6%. From these results, it can be inferred that during the magma evolution, it underwent the process of cooling, decompression, reduction, and water enrichment. The compositions of amphibole melt at equilibria display highly comparable trace element and rare earth element signatures. Major element contents reveal that the melt compositions associated with amphibole crystallization in pyroxene peridotite, olivine pyroxenite, and gabbro are relatively primitive, while the melts during amphibole crystallization in amphibole gabbro exhibit relatively evolved characteristics. Comprehensive analysis indicates that the diverse rocks within the Xiwanggou complex were formed during different evolution stages of homologous magma. As the magma ascended and emplaced, it progressively evolved, becoming enriched in Si and depleted in Mg, and underwent the fractional crystallization of plagioclase. These rocks thus serve as critical magmatic records, documenting the subduction of the Paleo-Tethys Ocean beneath the East Kunlun Orogen during the Early-Middle Triassic period.

Abstract:The Lijiagou granite pegmatite-type lithium deposit is a super-large ore deposit in western Sichuan. Currently, the enrichment mechanism of lithium in the pegmatite of the Lijiagou deposit remains unclear. This paper focuses on multi-stage and multi-type muscovite and cassiterite in the pegmatite of the Lijiagou deposit, conducting microstructural observations, electron probe microanalysis (EPMA), LA-ICP-MS analysis, and cassiterite U-Pb dating. The study categorizes muscovite in pegmatites into three types: ① primary muscovite (Ms), a product of the magmatic stage, with a relatively low-Li content ranging from 2 089×10^-6 to 4 561×10^-6; ② transitional muscovite (TM), formed during the magmatic-hydrothermal transition stage where melt and fluid coexist, resulting from the exsolution of volatile-rich fluid leading to the enrichment of Li element, with a Li content ranging from 8 173×10^-6 to 25 307×10^-6; ③ hydrothermal muscovite (HM), formed by fluid metasomatism, where the Li element gradually decreases during this stage (with a minimum of 642.7×10^-6). The microregional compositional characteristics indicate that the K/Rb and Nb/Ta values gradually decrease from Ms to TM, indicating a higher degree of evolution of the Lijiagou deposit. Meanwhile, cassiterite in the pegmatite is classified into four types, from early to late, namely, relatively uniform structure (Cst-1) → inhomogeneous core-edge structure (Cst-2, Cst-3) → white patchy structure (Cst-4), with gradually increasing contents of elements such as Fe, Nb, and Ti. Combine with the Ta/(Nb+Ta) value, it is inferred that cassiterite exhibits characteristics of early Fe enrichment and late Nb enrichment during magmatic evolution. The significant increase of Ti content in white patchy cassiterite (Cst-4) reflects the metasomatic action of hydrothermal fluids. Furthermore, U-Pb dating of cassiterite within pegmatite containing spodumene reveals the depositional age of the Lijiagou deposit to be 196.18±4.39 Ma (n=18, MSWD=0.62). Based on existing research, it is determined that there are two stages of mineralization in the Lijiagou deposit, with ages of 211~205 Ma and 199~186 Ma, respectively. This paper believes that the mineralization process of the Lijiagou pegmatite experienced a melting-fluid evolution stage. The fluid exsolution resulted in the enrichment of Li element, which entered the spodumene lattice and precipitated into ore after reaching supersaturation, ultimately forming the Lijiagou pegmatite-type lithium deposit.

Abstract:The Gejiu polymetallic tin ore cluster developed a series of basic-intermediate-acidic-alkaline magmatic rocks during the Late Yanshan period, the genesis and evolution of which are crucial for an in-depth understanding of the Gejiu tin-copper symbiosis and the formation processes of various types of tin ores. However, the nature of the granite source area, the type of genesis, and the evolutionary processes related to the ore-forming process remain widely debated. As a pervasive mineral, the trace element characteristics of apatite can serve as a tracer for magma-fluid evolution process and fluid alteration process. Therefore, this study focuses on apatite in different types of rocks from Gejiu as the research object, and through EPMA and LA-ICP-MS analysis, the main and trace element content characteristics of apatite in each rock body were obtained. Using the fractionation characteristics of rare earth elements, combined with various trace elements with typical discrimination, the granite of different source areas and different types of genesis were indicated. The results show that the Shenxianshui K-feldspar granite and Longchahe monzogranite developed in the western part of the Gejiu fault are crust-mantle mixed-source I-type granites, and their apatite is of magmatic type, with a right-skewed distribution trend of rare earth elements, and high Sr (135×10^-6~280×10^-6), V (0.86×10^-6~28.6×10^-6), Ce (2 147×10^-6~6 541×10^-6), high Th/U (2.09~6.93), and La/Sm (2.27~5.45) characteristics. This type of granite body has not formed tin, copper, and other metal ore deposits. The Laoka biotite granite, muscovite granite, and sericite granite distributed in the eastern part of the Gejiu fault are S-type granites derived from meta-sedimentary rocks and are the main carriers of tin, copper, and tungsten ore formation. Their apatite is mainly of hydrothermal type, with a relatively flat rare earth element pattern, and has higher Mn (337×10^-6~4 415×10^-6) content and lower V (0.14×10^-6~11.6×10^-6), La (190×10^-6~1 440×10^-6), Ce (706×10^-6~4 856×10^-6) content, as well as lower La/Sm (0.52~3.03). These characteristics reveal the rock-forming and ore-forming specificity of apatite in the Late Yanshan magmatic rocks of Gejiu, and indicate that different source magma coexisted on both sides of the Gejiu fault during the same period, providing new insights into the rock-forming and ore-forming processes of the Gejiu ore cluster.

Abstract:The Longshan Complex, distributed in Baoji of Shaanxi Province and Tianshui of Gansu Province, is located at the junction of the Qinling orogenic belt and the Qilian orogenic belt, and is the material basis for understanding the tectonic evolution and attribution of the region. In this paper, detailed petrography, mineral chemistry, phase equilibrium modeling and titanite U-Pb geochronology studies were carried out on garnet-bearing amphibolites samples collected from the Longshan Complex.Based on detailed petrographic observations and mineral chemical analyses, it was determined that the garnet-bearing amphibolites recorded three stages of metamorphic mineral assemblages. The mineral assemblage in the prograde metamorphic stage (M1) is represented by fine-grained plagioclase, amphibole and quartz in garnet; the mineral assemblage in the peak metamorphic stage (M2) is represented by plagioclase+amphibole+quartz+garnet+ilmenite+titanite+melt; and the mineral assemblage in the retrograde metamorphic stage (M3) is represented by plagioclase+amphibole+quartz+ilmenite+melt, forming a symplectite texture.According to the geothermobarometers, the temperature and pressure conditions in the prograde metamorphic stage (M1) are 563℃ and 0.82 GPa. The results of phase equilibrium modeling for the peak metamorphic stage (M2) show that the temperature and pressure conditions are 800~818℃, 1.28~1.32 GPa and 740~770℃, 1.17~1.20 GPa. For the retrograde metamorphic stage (M3), the temperature and pressure conditions of one sample calculated by phase equilibrium modeling are 691~703℃, 1.03~1.06 GPa, and the temperature and pressure conditions of another sample obtained by the geothermobarometer are 683℃ and 0.8 GPa. The amphibolites have experienced the prograde metamorphic stage to the peak metamorphic stage and then to the retrograde metamorphic stage, and recorded a clockwise metamorphic p-T path. The peak metamorphic temperature and pressure conditions are close to or similar to those in many areas of the Qinling Complex. The results of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) titanite U-Pb geochronology show that the intersection ages of titanite in the garnet-bearing amphibolites are 380.5±4.8 Ma, 430.8±6.7 Ma, 431.6±6.1 Ma and 433.4±4.0 Ma. In summary, by comparing the metamorphic temperature and pressure conditions and metamorphic ages of the Longshan Complex with those of the Qinling Complex, it was found that the metamorphic age of the Longshan Complex in this region is close to the last retrograde metamorphic age of the Qinling Complex in the eastern section of the North Qinling, and the peak metamorphic temperature and pressure conditions are similar to the granulite facies metamorphism of the Qinling Complex in the western section of the North Qinling. It is speculated that the Longshan Complex may be the western extension of the North Qinling orogenic belt.

Abstract:Tourmaline is a boron-bearing cyclosilicate mineral with complex chemical compositions. It can remain stable in a wide range of p-t conditions (t=150~900℃, p=6 MPa~6 GPa), making it an ideal tracer mineral for understanding geological process in different tectonic environments. We provide a comprehensive summary of the mineralogical characteristics and geochemical compositions of tourmaline, with a particular focus on the main factors controlling its boron isotopic compositions, including the boron source, equilibrium and/or Rayleigh fractionation, and the evolution of ore deposit. We further summarize and review the applications of tourmaline in key areas, including its major and trace elements, stable isotopes (H-O, Si, B), and radiogenic isotopes (Rb-Sr, Sm-Nd) for tracing the sources and evolution of geological fluids, as well as its role in investigating the metallogenic processes of various deposit types (e.g., IOCG and orogenic gold deposits). Finally, this study highlights several promising directions for future research on tourmaline. In particular, further investigations are expected to achieve breakthroughs in crystal-chemical structure determination, in-situ micro-scale isotopic analyses (e.g., Li, Mg), the construction of p-t-T trajectories to trace fluid evolution, and the reconstruction of paleo-seawater boron isotope signatures. Comprehensive studies integrating tourmaline mineral chemistry, isotope geochemistry, and geochronological approaches will not only advance our understanding of fluid formation and evolutionary mechanisms, but may also provide crucial clues for deciphering the environmental evolution of early Earth.

Abstract:Basalt fiber, a type of high-performance fiber, is produced by drawing from basalt or rocks of similar compositions after high-temperature melting. The homogeneity of the melt during fiber preparation critically determines fiber quality, yet the dynamic phase transition process during basalt melting remains poorly understood. This study investigated the melting behavior of Hainan Island basalt for fiber production through high-temperature melting experiments, combined with X-ray diffraction (XRD), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC) analyses. The results showed that under an air atmosphere, the sample lost adsorbed water from room temperature to 113℃, smectite melted at 804~849℃, pseudobrookite, clinopyroxene and plagioclase with low-An melted in large quantities at 1 075~1 193℃, and high-An plagioclase and hematite melted at 1 220~1 297℃. The various mineral components melted in order of melting point from low to high, but during the melting process, oxidation reactions occurred to produce hematite and pseudobrookite, causing the complete melting temperature of basalt to increase by about 120℃. The grain size of hematite increased significantly with increasing temperature, which was attributed to crystal regrowth at high temperatures. This study provides a theoretical basis for optimizing the melting process of basalt for fibers.

Abstract:A series of lamprophyre dykes that crosscut the main foliation of the ultrahigh pressure (UHP) metamorphic metapelite have been recently discovered in the Yuka terrane, North Qaidam Orogen, which are composed predominantly of biotite/phlogopite, amphibole, K-feldspar and plagioclase. To investigate their petrogenesis and tec-tonic setting, systematic petrological, geochemical, mineral electron microprobe analyses and biotite ⁴⁰Ar/³⁹Ar dating have been performed on two lamprophyre samples. Bulk-rock geochemistry reveals that the Yuka lamprophyres are potassic calc-alkaline types, which are characterized by medium SiO₂ content of 55.19%~55.78%, high potassium (K₂O/Na₂O=1.72~4.41) and high Mg^# (MgO=7.52%~9.90%, Mg^#=66~72). They also exhibit enrichment in light rare earth elements (LREE) and large ion lithophile elements (LILE, e.g., Rb, Ba, Pb), coupled with depletion in heavy rare earth elements (HREE) and high field strength elements (HFSE, e.g., Nb, Ta, Ti), displaying typical subduction signatures. Nb/Ta ratios fall between continental crust and the primitive mantle values, while Nb/U ratios resemble global subducted sediment averages, indicating source metasomatism by mobile elements rich subduction fluids. Mineral geochemistry analysis show that phlogopite relics in phenocrystic biotite,phenocrystic biotite, and matrix biotite crystallized at temperatures of 1 098~1 167℃, 1 054~1 106℃ and 1 049~1 101℃, respectively. Their crystallization pressures are 1.62~2.12 GPa, 1.51~1.63 GPa, and 1.57~1.66 GPa, respectively. The calculated oxygen fugacity (log f_O2) ranges from -4.42 to -5.90, -5.80 to -6.71, and -5.84 to -6.67 for these phases, suggesting a high oxygen fugacity environment. Biotite/phlogopite from the lamprophyre analysed by ⁴⁰Ar/³⁹Ar laser step-heating dating yielded a plateau age of ca. 360 Ma, indicating the dike formed in the Late Devonian to Early Carboniferous. Taken together with field occurrence, whole-rock and mineral geochemical characteristics, geochronology and regional tectonics, we propose that the Yuka lamprophyre formed in a post-collisional lithospheric extensional tectonic setting during the North Qaidam Orogen evolution, which likely originated from partial melting of phlogopite-bearing spinel facies iherzolite at the garnet-spinel transition zone (~70 km depth) within a metasomatized, high-oxygen fugacity enriched mantle.

Abstract:In order to study the effect of magnesium-iron-manganese-zirconium quaternary hydrotalcite (MgFeMnZr-LDH) on the passivation remediation of antimony (Sb)-contaminated soils, MgFeMnZr-LDH was added to the yellow soil with a Sb content of 1 450 mg/kg and for 45 d of flooding, and NaH₂PO₄, Na₂HPO₄ and ethylenediaminetetraacetic acid (EDTA) were used to extract soil available Sb(Ⅲ) and Sb(Ⅴ); different forms of Sb(Ⅲ) and Sb(Ⅴ) in soil were extracted by Wenzel sequential extraction procedure; the correlation between the addition of MgFeMnZr-LDH, soil available Sb and different forms of Sb were discussed, and the passivation mechanism of MgFeMnZr-LDH on soil Sb was explored. The results showed that with the increase of MgFeMnZr-LDH addition, the total content of available Sb extracted by Na₂HPO₄, NaH₂PO₄ and EDTA gradually decreased, with maximum reduction rates of 26.5%, 25.2%, and 35.5%, respectively, in which the percentage of available Sb(Ⅲ) also decreased gradually; soil content of Sb (Ⅲ) and Sb(Ⅴ) decreased significantly in the non-specifically adsorption state(F1), the specifically adsorption state(F2), and the amorphous iron and aluminium oxide-bound state(F3), and increased significantly in the crystallized iron and aluminium oxide-bound state(F4); F3 and F4 had the largest variation in percentage. The material additions showed highly significant negative correlation with F1, F2, F3 of Sb(Ⅲ) and Sb(Ⅴ), highly significant positive correlation with F4 of Sb(Ⅲ) and Sb(Ⅴ), and significant positive correlation with the residual phases Sb(Ⅲ)(F5)in the soils. MgFeMnZr-LDH gradually transformed F1, F2 and F3 of Sb in soils into F4 and F5 through electrostatic, ion exchange, coordination, precipitation and oxidation, which reduced the bioeffectiveness of Sb and realized the passivation remediation of Sb-contaminated soil.

Abstract:Sedimentary rocks are widely distributed on the surface and contain abundant solid minerals and hydrocarbon resources.The accurate identification of sedimentary rocks is of great significance for basic geological research and the exploration of solid minerals and hydrocarbon resources. At present, lithology identification of sedimentary rocks mainly relies on visual identification, optical identification and X-ray powder diffraction analysis. These methods have many problems such as great influence of subjective factors, long experiment period and high cost which can not meet the needs of real-time lithology results acquisition in the field. In this paper, four typical sedimentary rocks of terrigenous clastic rocks (sandstone and mudstone) and carbonate rock (limestone and dolomite) are identified rapidly by the quartz abundance index (8625D), carbonate abundance index (6500D), carbonate composition index (2340W), illite-smectite mixed layer abundance index (2200D), kaolinite abundance index (2160D2190) and rock brightness index (Albedo-SWIR), which is combined infrared reflectance spectroscopy with binary intersection graphic method. The overall recognition rate is more than 90%. This study provides a rapid, non-destructive and objective identification method for sedimentary rock lithology and has a good application prospect, which plays an important significance for the subsequent research on detailed cataloging of cores, stratigraphic division, sedimentary facies division, and physical property evaluation of carbonate reservoir.