巴基斯坦苏来曼地区多克帕坦组碎屑岩沉积特征初探

巴基斯坦苏来曼地区上新统的多克帕坦组是著名的西瓦利克岩系（Ｓｉｗａｌｉｋｒｏｃｋｓｅｒｉｅｓ）的中部岩性段，它由一套灰白、灰黄色的含砾中粗粒岩屑砂岩、长石岩屑砂岩和灰黄、棕红色的粉砂岩、泥岩组成，呈稳定的南北向展布。岩性上，砂岩的石英含量为３８％－５２％，长石为１１％－２９％，岩屑为２７％－５０％，以石英含量少、岩屑含量高为特征。通过岩石的颜色、有机质含量、沉积构造和粒度概率曲线图判别，这套岩石形成于干旱－半干旱气候下高流量、高流态、高负载的砂质辫状河的冲积环境。物源分析结果表明：多克帕坦组的物源主要是由造山带蚀源区所提供，即来源于一直处于隆升阶段的喜马拉雅山褶皱带。

New Discovery of Hipparion theobaldi Skull from the Late Miocene of Padhri,District Jhelum,Punjab,Pakistan and Associated Mammalian Fossil Assemblage

A fossil-bearing locality near Padhri village,Dhok Pathan,55 km away from the tehsil Dina,Jhelum District,in the Potwar Plateau,Middle Siwaliks,Punjab,northern Pakistan,is significantly rich in mammalian fossils.This site has provided an abundant mammalian fossil fauna of Late Miocene age from the Dhok Pathan Formation(Fm.).The recovered material belongs to four families:Equidae(horses),Rhinocerotidae(rhinos),Bovidae(cows),and Suidae(pigs).We discovered a new skull of hipparionine Hipparion theobaldi from this locality along with 22 specimens from the associated assemblage of fossil mammals.The recovered material includes seven other species:the aceratheriine Chilotherium intermedium,boselaphines Tragoportax punjabicus,Selenoportax vexillarius,Pachyportax latidens,the antelope Gazella lydekkeri and suinine Propotamochoerus hysudricus.The specimens are isolated teeth,fragments of maxilla,mandibles and horn cores.The Dhok Pathan Fm.is generally composed of claystone,siltstone and sandstone beds and,based on the mammalian fauna,the Padhri fossil locality is dated as Late Miocene.Thi99 s formation was deposited in a subtropical paleoenvironment and the predominance of fossil bovids indicates extremely moist conditions with small but frequent standing water bodies.

巴基斯坦西瓦里克道克派珊组豕脊齿象属(长鼻目)新材料（英文）

褶齿豕脊齿象(Choerolophodon corrugatus)是豕脊齿象属在巴基斯坦西瓦里克群发现的唯一种。其首次发现是在西瓦里克亚群下部的卡米列组(中新世晚期),而后大量见于西瓦里克亚群中段的道克派珊组(中新世晚期至上新世早期)。本次报道的褶齿豕脊齿象新材料发现于道克派珊模式产地及其邻近区域。发现的材料包括象牙、下颌、上颌碎片以及一些乳前臼齿和臼齿。新材料与欧洲的Ch. pentelici的牙齿特征极其相似,但在头骨和下颌特征上有所区别。