Aptian volcanism in the Songliao Basin and environment change

• 作 者: Wang P.J. Liu H.B. Chen C.Y.
• 机 构: CollegeofEarthSciences,JilinUniversity,Changchun130061,China
• 出 处: 第12届中生代陆地生态系统国际学术研讨会
• 发表日期: 2015年8期
• 关键词: Cretaceous Songliao Basin Aptian volcanism in NE Asia volcanic ash aerosol green

　　Volcanism is a natural climate forcing causing variations in temperatures (Sigl et al.,2013).The Aptian Oceanic Anoxic Event la (OAE-la) is preceded by a prominent negative C-isotope excursion attributed to major volcanism on the Ontong Java plateau (OJP) that is supposed to lead to a pCO2 increase and a climate change (Keller et al.,2011).However,OJP itself may not well explain some important isotopic signatures such as negative strontium-isotope excursions continuously from 125 Ma to 113 Ma recorded in corresponding marine sediments.