Palynological PV borehole dataset

Quantitative palynological data – proxy data – from the PV borehole (onshore Valdés Basin) together with the statistical treatment of data, offer key information for regional paleoclimatic, paleoenvironmental and paleogeomorphic reconstructions for the Miocene of the southwestern Atlantic Ocean. Data show the stratigraphical distribution of palynomorphs (number of specimens) and environmental variables of 60 samples from a 580 m-thick section. Quantitative changes in the palynological assemblages may indicate shifting of the coastline, related — in part – to fluctuations of the relative sea level and in turn, interpreted as successive regional transgressive - regressive cycles occurred during the Miocene in the southwestern Atlantic margin.

定量孢粉学数据，作为代用数据，源自 PV 井孔（陆地瓦尔代斯盆地），结合数据统计分析，为重建西南大西洋海域中新世的区域古气候、古环境和古地貌提供了关键信息。数据展示了60个样品从580米厚剖面中的孢粉形态（标本数量）和环境变量在层序学上的分布。孢粉组合的定量变化可能表明海岸线的变迁，部分与相对海平面的波动相关，进而被解释为中新世西南大西洋边缘连续发生的区域海侵-海退周期。