摘要：As a second major tectonic unit of the Bohai Bay basin, the Jizhong depression is a very typical area in China with enrichment of buried-hill hydrocarbon reservoirs. Based on 117 borehole temperature data and 45 measured thermal conductivity data, we studied present-day geothermal characteristics of the Jizhong depression systematically such as geothermal gradient, terrestrial heat flow, thermal lithosphere thickness and lithospheric thermal structure. The results show that the present-day geothermal gradients at depths 0 similar to 3000 m in this region range from 20.8 degrees C.km(-1) to 41. 0 degrees C.km(-1) with a mean of 31. 6 degrees C.km(-1), lower 1 similar to 3 degrees C.km(-1) than uncorrected value. The heat flow varies between 48.7 similar to 79.7 mW.m(-2) with an average of 59. 2 mW.m(-2). Present-day geothermal gradients and heat flow of this depression gradually increase from west (basin margin) to east (basin interior) horizontally. These values in sub-uplift' areas of the Jizhong depression are usually higher than those of the sub-depression regions, and their variations correspond to the basement relief very well. Meanwhile, the uplift areas with high heat flow in the central Jizhong depression host amounts of geothermal fields. In addition, we calculated the thickness of present-day thermal lithosphere of study area to be 98-109 km, and its lithospheric thermal structure is a "cold crust and hot mantle" type now. This study has an important guiding significance for hydrocarbon exploration and geothermal energy exploitation in the Jizhong depression, and provides new insights for deep lithosphere research (especially for the scientific problem North China Craton destruction).

关键字：Jizhong depression Geothermal gradient Heat flow Lithospheric thermal structure Bohai Bay basin

ISSN号：0001-5733

卷、期、页：卷: 59 期: 3 页: 1003-1016

发表日期：2016-03-01

期刊分区（SCI为中科院分区）：四区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）

发表期刊名称：CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION

参与作者：赵贤正,金凤鸣,韩春元,马雪峰,董雄英,梁小娟

通讯作者：许威,徐秋晨

第一作者：常健,邱楠生

论文类型：期刊论文

论文概要：常健,邱楠生,赵贤正,许威,徐秋晨,金凤鸣,韩春元,马雪峰,董雄英,梁小娟，Present-day geothermal regime of the Jizhong depression in Bohai Bay basin, East China，CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION，2016，卷: 59 期: 3 页: 1003-1016

论文题目：Present-day geothermal regime of the Jizhong depression in Bohai Bay basin, East China