Discussion on the relationship between sandbody heterogeneity and uranium mineralization in Subashi area,Turpan-Hami basin
|
SHANG Gaofeng,male,born in 1978,engineer,focusing on uranium exploration and research work. E-mail:sgf331@163.com |
Received date: 2024-10-23
Revised date: 2024-12-31
Online published: 2025-11-07
In recent years, significant progress has been made in the exploration of sandstone type uranium deposits in the Subash area of the Turpan-Hami basin. Exploration shows that heterogeneity of sand bodies is one of the key factors controlling uranium mineralization. This article systematically analyzes the thickness, sand content, sedimentary facies, aquiclude numbers, ore bearing sandstone grain size, and organic matter content of the Xishanyao formation in the Subash area, identifies the spatial variation characteristics of sand heterogeneity, and explores its relationship with uranium mineralization. The research results show that the thickness of sand bodies in distributary channels is relatively large, with good connectivity and strong homogeneity. The heterogeneity is strong at the bay between the distributaries, with well-developed mudstone barriers and thin sand bodies. The variation of spatial heterogeneity in sand bodies causes the changes in the direction of oxygen and uranium water transport, resulting in a decrease in fluid transport velocity, leading to uranium unloading and precipitation for the mineralization. In the Subashi area, the favorable condition for uranium mineralization is that the thickness of the sand body is 19-54m, the sand content is 60 % -80 %, the number of aquiclude is 3-5, and the lithology is fine sandstone at the transition between the underwater distributary channel and the bay with high organic matter content.
Gaofeng SHANG , Changlin GUO , Lei CAO . Discussion on the relationship between sandbody heterogeneity and uranium mineralization in Subashi area,Turpan-Hami basin[J]. World Nuclear Geoscience, 2025 , 42(1) : 29 -44 . DOI: 10.3969/j.issn.1672-0636.2025.01.003
表1 苏巴什地区西山窑组目的砂体规模统计表Table 1 Statistical table of the target sandbody scale of Xishanyao formation in Subashi area |
| 序号 | 孔号 | 埋深/m | 厚度/m | |
|---|---|---|---|---|
| 起 | 止 | |||
| 1 | ZK168-1 | 571 | 594 | 23 |
| 2 | ZK168-4 | 630 | 657 | 27 |
| 3 | ZK184-1 | 670 | 698 | 28 |
| 4 | ZK200-1 | 731 | 753 | 22 |
| 5 | ZK220-1 | 631 | 655 | 24 |
| 6 | ZK256-4 | 709 | 728 | 19 |
| 7 | ZK310-1 | 516 | 539 | 23 |
| 8 | ZK320-2 | 424 | 475 | 51 |
| 9 | ZK320-6 | 469 | 506 | 37 |
| 10 | ZK340-1 | 322 | 376 | 54 |
| 11 | ZK340-2 | 631 | 647 | 16 |
| 12 | ZK340-3 | 676 | 692 | 16 |
| 13 | ZK350-1 | 464 | 490 | 26 |
| 14 | ZK470-10 | 654 | 685 | 31 |
表2 苏巴什地区矿石岩性统计表Table 2 The list of ore in the Subashi area |
| 序号 | 孔号 | 岩(矿)层位置/m | 品位/% | 平米铀量/(kg·m-2) | 岩性 | ||
|---|---|---|---|---|---|---|---|
| 自 | 至 | 厚度 | |||||
| 1 | ZK340-1 | 322.10 | 322.50 | 0.40 | 0.017 0 | 0.15 | 灰色泥质细砂岩 |
| 325.60 | 328.80 | 3.20 | 0.027 6 | 1.89 | 灰色细砂岩 | ||
| 2 | ZK340-3 | 676.20 | 676.70 | 0.50 | 0.012 0 | 0.13 | 灰色细砂岩 |
| 677.90 | 678.28 | 0.38 | 0.033 5 | 1.22 | 灰色细砂岩 | ||
| 678.28 | 679.60 | 1.32 | 浅黄色细砂岩 | ||||
| 683.00 | 683.20 | 0.20 | 0.011 8 | 0.05 | 灰色细砂岩 | ||
| 686.00 | 686.40 | 0.40 | 0.014 5 | 0.12 | 灰色细砂岩 | ||
| 3 | ZK350-1 | 480.70 | 481.20 | 0.50 | 0.031 1 | 0.33 | 灰色细砂岩 |
| 486.20 | 486.57 | 1.30 | 0.025 3 | 0.70 | 褐黄色细砂岩 | ||
| 486.57 | 487.50 | 灰色细砂岩 | |||||
| 4 | ZK256-4 | 725.40 | 727.50 | 2.10 | 0.062 6 | 2.81 | 灰色细砂岩 |
表3 含矿砂体渗透系数统计一览表Table 3 The statistical results of permeability coefficient of mineral sandbody |
| 项目 | 样品个数/个 | 渗透系数范围/ (m·d-1) | 平均值/ (m·d-1) | 变异系数/% |
|---|---|---|---|---|
| 砾岩 | 7 | 0.29~2.15 | 1 | 70 |
| 粗砂岩 | 59 | 0.15~4.39 | 0.89 | 85.2 |
| 中砂岩 | 42 | 0.03~2.183 | 0.63 | 78.9 |
| 细砂岩 | 25 | 0.06~1.989 | 0.65 | 85.4 |
| K矿/ K非 | 17 | 0.62~2.45 | 1.3 | 35 |
图16 ZK350-1层间氧化带下翼铀矿石Fig. 16 ZK350-1 interlayer oxidation zone lower wing uranium ore |
图18 工业矿段有机质与铀相关性折线图Fig. 18 Line chart diagram of correlation between organic matter and uranium in industrial ore block |
表4 苏巴什地区工业矿段铀含量和有机质分析Table 4 Analysis of uranium content and organic matter in industrial ore bodies in Subashi area |
| 样品编号 | U/10-6 | OrgC/% | 样品编号 | U/10-6 | OrgC/% |
|---|---|---|---|---|---|
| ZK350-1-02 | 8.82 | 0.54 | ZK350-1-22 | 505.00 | 0.56 |
| ZK350-1-03 | 75.5 | 0.95 | ZK350-1-23 | 97.50 | 0.64 |
| ZK350-1-04 | 480.00 | 2.95 | ZK350-1-24 | 257.00 | 3.90 |
| ZK350-1-05 | 1060.00 | 3.86 | ZK350-1-25 | 10.80 | 0.47 |
| ZK350-1-06 | 28.3 | 2.61 | ZK340-1-02 | 4.18 | 0.49 |
| ZK350-1-07 | 19.8 | 3.15 | ZK340-1-03 | 168.00 | 2.44 |
| ZK350-1-08 | 30.5 | 0.77 | ZK340-1-04 | 880.00 | 4.19 |
| ZK350-1-09 | 15.70 | 0.50 | ZK340-1-05 | 133.00 | 1.46 |
| ZK350-1-10 | 17.30 | 0.49 | ZK340-1-06 | 135.00 | 0.60 |
| ZK350-1-11 | 21.40 | 1.16 | ZK340-1-07 | 156.00 | 0.56 |
| ZK350-1-12 | 22.10 | 0.77 | ZK340-1-08 | 1040.00 | 0.60 |
| ZK350-1-13 | 65.50 | 0.67 | ZK340-1-09 | 90.20 | 0.52 |
| ZK350-1-14 | 395.00 | 0.68 | ZK340-1-10 | 83.40 | 0.54 |
| ZK350-1-15 | 7.89 | 0.47 | ZK340-1-11 | 64.20 | 0.50 |
| ZK350-1-16 | 10.60 | 0.47 | ZK340-1-12 | 370.00 | 1.31 |
| ZK350-1-17 | 12.00 | 0.51 | ZK340-1-13 | 610.00 | 1.01 |
| ZK350-1-18 | 11.60 | 0.56 | ZK340-1-14 | 485.00 | 1.45 |
| ZK350-1-21 | 785.00 | 0.74 | — | — | — |
| 1 |
王永和, 焦养泉, 吴立群. 从铀成矿条件分析西北地区砂岩型铀矿找矿[J]. 西北地质, 2007, 40(1):72-82.
|
| 2 |
秦明宽, 李子颖, 蔡煜琦, 等. 对加强我国铀资源勘查 “三新”突破的战略性思考[J]. 世界核地质科学, 2022, 39(3):383-398.
|
| 3 |
周巧生, 李占游. 吐哈盆地西南缘地浸砂岩型铀矿地质特征及找矿前景[J]. 中国地质, 2003, 30(2):186-191.
|
| 4 |
吴伯林, 徐高中, 李卫红, 等. 吐哈盆地地浸砂岩型铀矿成矿条件与盆地动力学演化[J]. 中国地质, 2004, 31(1):101-107.
|
| 5 |
曹雷, 王刚, 尚高峰. 吐哈盆地苏巴什地区铀矿化特征及成矿规律研究[J]. 新疆地质, 2023, 41(4):547-554.
|
| 6 |
郭长林, 尚高峰, 曹雷, 等. 吐哈盆地苏巴什地区中侏罗统西山窑组地层、岩石学特征及成矿条件分析[J]. 铀矿地质, 2024, 40(4):648-658.
|
| 7 |
刘传东, 郭世超, 杜鹏飞, 等. 吐哈盆地砂岩型铀矿流体动力学数值模拟[J]. 世界核地质科学, 2023, 40(2):197-207.
|
| 8 |
路乾乾. 十红滩铀矿床矿化地段地层渗透性研究[D]. 南昌: 东华理工大学, 2018.
|
| 9 |
乔海明, 尚高峰, 刘治国, 等.新疆吐鲁番市十红滩地区32-128 线铀矿预查[R], 咸阳: 核工业二○三研究所, 2017.
|
| 10 |
尚高峰, 乔海明, 刘治国, 等. 微生物在十红滩铀成矿过程中的作用[J]. 铀矿地质, 2014, 30(6):371-378.
|
| 11 |
乔海明, 闫周让, 章金彪, 等. 吐哈盆地十红滩铀矿床稀土元素地球化学特征浅析[J]. 地质论评, 2011, 57(1):73-77.
|
| 12 |
乔海明, 张复新, 徐高中, 等. 吐哈盆地十红滩铀矿床的水文地质特征及矿床成因分析[J]. 地质论评, 2005, 51(3):257-258.
|
| 13 |
曹雷, 王刚, 尚高峰, 等. 新疆吐哈盆地苏巴什-小草湖地区铀矿资源调查评价[R]. 西安: 核工业二〇三研究所, 2022.
|
| 14 |
郑浚茂, 于兴河, 谢承强, 等. 不同沉积环境储层的层内非均质性[J]. 现代地质, 1995, 9(4):501-508.
|
| 15 |
焦养泉, 陈安平, 杨琴, 等. 砂体非均质性是铀成矿的关键因素之——鄂尔多斯盆地东北部铀成矿规律探讨[J]. 铀矿地质, 2005, 21(1):8-15.
|
| 16 |
刘国安, 乔鹏, 康世虎, 等. 二连盆地芒来矿床砂体的非均质性与铀成矿关系研究[J]. 铀矿地质, 2020, 36(5):371-381.
|
| 17 |
焦养泉, 李祯. 河道储层砂体中隔挡层的成因与分布规律[J]. 石油勘探与开发, 1995, 22(4):78-81.
|
| 18 |
焦养泉, 李思田. 碎屑岩储层物性非均质性的层次结构[J]. 石油与天然气地质, 1998, 19(2):89-92.
|
| 19 |
焦养泉, 吴立群, 杨生科, 等. 铀储层沉积学——砂岩型铀矿勘查与开发的基础[M]. 北京: 地质出版社, 2006.
|
| 20 |
易超, 郑云龙, 王明太. 东胜地区直罗组铀储层非均质性特征及其与铀成矿的关系[J]. 铀矿地质, 2013, 29(3):139-145.
|
| 21 |
胡立飞, 刘小刚. 鄂尔多斯盆地东北部农胜新地区直罗组下段下亚段砂体非均质性与铀矿化的关系[J]. 铀矿地质, 2020, 36(4):250-260.
|
| 22 |
王刚, 张发, 何大鹏, 等. 新疆吐鲁番十红滩铀矿床北矿带地浸开采可行性分析研究[J]. 东华理工大学学报(自然科学版), 2015, 38(1):58-63.
|
| 23 |
莫帮洪, 朱西养, 姚毅锋, 等. 贵州504矿床铀矿化特征及控矿因素分析[J]. 世界核地质科学, 2016, 33(1):19-25.
|
/
| 〈 |
|
〉 |