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.来自陆上瓦尔代斯盆地PV钻孔的定量孢粉数据——即代用指标数据（proxy data）——及其配套的统计处理工作，为西南大西洋中新世时期的区域古气候、古环境与古地貌重建提供了关键信息。本数据集展示了580米厚地层剖面中60个样品的孢粉化石（palynomorphs，标本数量）的地层分布特征与环境变量数据。孢粉组合的定量变化可指示海岸线变迁，其部分受控于相对海平面波动，进而被解读为西南大西洋边缘中新世期间相继发生的区域海进-海退旋回。