封面故事

青海柴達木盆地ZK02鉆井現場及深度 343 m處的石鹽沉積。通過在柴達木盆地東、西部實施的科學鉆探，在東部獲得1.17 Ma以來高精度年代學數據和高分辨率古環境記錄; 在西部發現第四紀早期發育的 31期冬季風強盛的冷期沉積。研究表明在盆地中部存在西風帶/東南季風的界線和成鹽突變帶，證實東部第四紀天然氣的生物成因, 為柴達木盆地資源評價提供重要依據。這項由中國地質科學院礦產資源研究所鄭綿平院士主持的研究成果，當選 2012年度中國地質科學院十大科技進展，排名第三。詳見本期第129-138頁。（圖片提供：鄭綿平、侯獻華）

Cover Story:ZK02 drill hole and halite deposits at the depth of 343 m in the Qaidam Basin, Qinghai Province.Through scientific drilling in the eastern and western parts of the Qaidam Basin, high-precision chronologic data and high-resolution paleoenvironment record were obtained in the eastern part, and 31series of cold deposition events with strong winter wind developed in early Quaternary were discovered in the western part.Researches show that there existed the boundary between the westerlies and the southeast monsoon as well as the abrupt change zone in salt formation and prove that the Quaternary natural gas was of biogenic origin.All these results provide important evidence for the evaluation of resources in the Qaidam Basin.The research achievement led by Academician ZHENG Mian-ping, Institute of Mineral Resources, CAGS, ranks the third among “Top Ten Scientific and Technological Progresses of CAGS in 2012”.For details, see page 129-138 of this issue.(photo by ZHENG Mian-ping and HOU Xian-hua)