封面故事

青海柴達(dá)木盆地ZK02鉆井現(xiàn)場及深度 343 m處的石鹽沉積。通過在柴達(dá)木盆地東、西部實(shí)施的科學(xué)鉆探，在東部獲得1.17 Ma以來高精度年代學(xué)數(shù)據(jù)和高分辨率古環(huán)境記錄; 在西部發(fā)現(xiàn)第四紀(jì)早期發(fā)育的 31期冬季風(fēng)強(qiáng)盛的冷期沉積。研究表明在盆地中部存在西風(fēng)帶/東南季風(fēng)的界線和成鹽突變帶，證實(shí)東部第四紀(jì)天然氣的生物成因, 為柴達(dá)木盆地資源評價(jià)提供重要依據(jù)。這項(xiàng)由中國地質(zhì)科學(xué)院礦產(chǎn)資源研究所鄭綿平院士主持的研究成果，當(dāng)選 2012年度中國地質(zhì)科學(xué)院十大科技進(jìn)展，排名第三。詳見本期第129-138頁。（圖片提供：鄭綿平、侯獻(xiàn)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)