经野外取样和地球化学测试分析,即墨温泉喷流沉积物呈现元素的富集并形成Fe,Ba,Li,La,Ce,Sc等10种元素的正异常.喷流沉积物中的Fe/Ti,(Fe Mn)/Ti及Al/(Al Fe Mn)比值分别为22.63,22.76和0.36~0.39,具有高铁低铝的热水沉积地球化学标识特征,符合Bostrom K.的热水沉积的标识;越流沉积物呈现诸多元素的亏损与负异常;越流沉积的Fe/Ti,(Fe Mn)/Ti及Al/(Al Fe Mn)比值仅为5.91,5.97和0.65,不具备热水沉积标识特征;通道-喷口沉积物呈现元素的富集并形成La,Ce,Sc,Sr元素的正异常.通道-喷口沉积中的Fe/Ti,(Fe Mn)/Ti及Al/(Al Fe Mn)比值分别为17.14,17.26和0.42,与>20,>20±5,<0.35比值比较,基本具备热水沉积特征,符合Bostrom K的热水沉积的标识.根据上述地球化学标识特征,结合温泉沉积的沉积学、矿物学标识,将即墨温泉沉积物划分为喷流相沉积、越流相沉积和通道-喷口亚相沉积并阐述其 "盆下源"沉积模式. 相似文献
The theoretical basis and application of an analogue-dynamical model (ADM) in the Lorenz system
is studied. The ADM can effectively combine statistical and dynamical methods in which the small disturbance
of the current initial value superimposed on the historical analogue reference state can be regarded as a
prediction objective. Primary analyses show that under the condition of appending disturbances in model
parameters, the model errors of ADM are much smaller than those of the pure dynamical model (PDM).
The characteristics of predictability on the ADM in the Lorenz system are analyzed in phase space by
conducting case studies and global experiments. The results show that the ADM can quite effectively
reduce prediction errors and prolong the valid time of the prediction in most situations in contrast
to the PDM, but when model errors are considerably small, the latter will be superior to the former.
To overcome such a problem, the multi-reference-state updating can be applied to introduce the
information of multi-analogue and update analogue and can exhibit exciting performance in the ADM. 相似文献