摘要：The geothermal regime not only reflects the basin's evolutionary history but also controls the formation of both fossil energy and geothermal resources. The deep geothermal characteristics of the Junggar Basin in northwestern China have remained unclear due to limited temperature data. In this study, we collected new temperature data from over 450 boreholes drilled in the past decade to investigate the geothermal gradient, heat flow, formation temperatures at depths of 5 to 10 km, and the thermal structure of lithosphere. The results show that the geothermal gradient ranges from 14.0 to 29.8 degrees C/km, with an average of 20.7 degrees C/km, and heat flow ranges from 32.7 and 68.5 mW/m2, averaging 45.8 mW/m2. Heat flow varies between uplifts and depressions, influenced by basement relief, with further regional variation in the north and south due to basement lithology and faults. The ratio of crust to mantle heat flow and the thermal lithosphere thickness across different tectonic units ranges from 0.74 to 1.92 and 150 to 270 km, respectively, confirming the basin's stable tectonic background. Formation temperatures at 10 km depth ranges from 155 degrees C to 311 degrees C, increasing from the center to the basin's margins. These findings suggest that oil can be found at depths of 8000 m in the Central Depression, while high-temperature geothermal resources are present around 5000 m in the Eastern Uplift. This study provides a comprehensive understanding of the geothermal regime and valuable insights for future resource exploration in the Junggar Basin.

关键字：Junggar Basin; Geothermal regime; Deep formation temperature; Hydrocarbon generation; Geothermal resources

ISSN号：1367-9120

卷、期、页：卷284

发表日期：2025-05-01

影响因子：2.700000

期刊分区（SCI为中科院分区）：三区

收录情况：SCI（科学引文索引印刷版）,SCIE（科学引文索引网络版）

发表期刊名称：JOURNAL OF ASIAN EARTH SCIENCES

参与作者：郭华军,单祥,彭博

通讯作者：李晨星,徐甲博,张泽

第一作者：常健,邱楠生

论文类型：期刊论文

论文概要：李晨星,常健,邱楠生,郭华军,单祥,彭博,徐甲博,张泽，Present-day geothermal regime of the Junggar Basin, northwest China: Implication for hydrocarbon distribution and geothermal resources，JOURNAL OF ASIAN EARTH SCIENCES，2025，卷284

论文题目：Present-day geothermal regime of the Junggar Basin, northwest China: Implication for hydrocarbon distribution and geothermal resources