COLLABORATIVE RESEARCH: Integrated Analysis of the Neoproterozoic Vindhychal Basin, India

AbstractCollaborative Research：印度新元古代文迪查尔盆地的综合分析最新的中元古代（1300-1000 Ma）和新元古代（1000-543 Ma）代表了以地球系统过程的深刻变化为标志的地球历史间隔。 这些变化包括大气和海洋化学性质的巨大变化，自由氧的积累;从稳定、静止的气候转变为多变的气候条件，低纬度冰川作用反复出现;以及双边、多细胞生物的进化和生物矿化的创新。 我们对这一重要区间的理解目前受到缺乏明确定义和校准的地层参考框架的阻碍，在该框架中，数据可以在全球范围内进行整合。 该项目试图通过对印度半岛Vindhyanchal盆地部分地区进行试点研究来解决这一问题。该盆地似乎保存了中新元古代至早寒武纪的沉积记录，但在印度以外的地区却很少受到关注。 我们的分析将灰层和其他火成岩单位的U-Pb地质年代学的层序地层学的背景下，将作为未来的生物地层，磁性地层和化学地层学研究的时间和物理框架。

AbstractCollaborative Research: Integrated Analysis of the Neoproterozoic Vindhychal Basin, IndiaThe latest Mesoproterozoic (1300-1000 Ma) and Neoproterozoic (1000-543 Ma) eras represent intervals of Earth history marked by profound changes in Earth system processes. These changes include large shifts in atmospheric and ocean chemistry with the build-up of free oxygen; the transition from equable, static climate to variable climatic conditions with the repeated occurrence of low-latitude glaciation; and theevolution of bilateral, multicellular organisms and the innovation of biomineralization. Our understanding of this important interval is currently hampered by the lack of a well- defined and calibrated stratigraphic reference framework, in which data can be integrated at a global scale. This project seeks to tackle this issue by means of a pilot study of portions of the Vindhyanchal basin of peninsular India. This basin appears to preserve a sedimentary record for much of the Meso-Neoproterozoic to Early Cambrian interval, but has received comparatively little attention outside India. Our analysis will place U-Pb geochronology of ash beds and other igneous units in a sequence stratigraphic context that will serve as the temporal and physical framework for future biostratigraphic, magnetostratigraphic, and chemostratigraphic studies.