喜马拉雅前陆盆地中新世—上新世 SIWALIK-CHURIA群轮藻化石及其古生物地理和古生态意义(英文)

CHAROPHYTES FROM THE MIOCENE—PLIOCENE TRANSITION IN THE SIWALIK/CHURIA GROUP OF THE HIMALAYAN FORELAND BASIN: PALAEOBIOGEOGRAPHIC AND PALAEOECOLOGIC IMPLICATIONS

印度、尼泊尔晚中新世—上新世 SIWAL IK- CHU RIA群轮藻化石组合与中国塔里木盆地及哈萨克斯坦东南部伊犁盆地轮藻组合极为接近。据此讨论了它们的古生物地理和古生态学特征。中新世—上新世轮藻植物繁盛的原因与当时季风活动引起的季节性洪水泛滥 ,在广大河漫滩地上形成有利于轮藻植物生长发育的局部湖泊环境有关。

The paper discusses the palaeobiogeographic and palaeoecologic aspects of the Late Miocene and Pliocene charophyte assemblages of the Siwalik/Churia Group from India and Nepal. The assemblages show distinct affinities with homotaxial assemblages from the Tarim Basin in China and Ili Basin in southeastern Kazakstan. The abundance of charophyte gyrogonites in the Mio-Pliocene sediments is attributed to enhanced seasonal flooding leading to the formation of local lacustrine conditions on the overbanks following intensification of the monsoon.