Late Pleistocene Homo erectus in Java?: Investigating the context, associations, and age of the world's youngest H. erectus sites

直立人的种群可能已经存活到爪哇更新世晚期（5万年前），可能与现代人类共存（H。sapiens）在时间和空间上。 H.的这种生存。直立人将与尼安德特人和现代人在欧洲的共存相平行，也回避了为什么今天只有现代人留在这两个地区的问题。 这个项目测试了这种晚期存活的H。直立人通过在爪哇的梭罗河流域进行的两年实地项目而在印度尼西亚存在。 该小组将在20米阶地（如Jigar、Ngandong）的已知地点进行新的挖掘、微地层学工作，并对发现的遗骸进行系统的动物群和埋藏学分析，并确定类似地质背景下的其他地点进行试挖掘。 该小组还将使用其他技术（包括放射性碳（14 C）、封闭系统U系列、发光和宇宙成因放射性核素技术）测试先前获得的放射性年龄估计值（U系列/ESR年龄）的准确性。 这是第一个明确关注印度尼西亚组合形成问题的项目。 这些数据，连同非洲和欧亚地区的数据，是模拟H.该项目在印度尼西亚和美国学者之间建立了一个长期的合作研究和培训计划，致力于回答科学问题和发展印度尼西亚的科学机会。 该计划旨在为印度尼西亚和美国学生提供培训机会，并为印度尼西亚科学家和收藏品提供基础设施。 现场和实验室培训机会和至少两个博士项目将提供给印尼的研究生，除了在系统收集，埋藏分析，地质现场和挖掘技术的管理实践培训。 将为至少两名美国研究生提供国际实地培训。 该计划同样旨在促进印度尼西亚和美国研究生之间的关系，目的是鼓励建立额外的富有成效的合作，例如PI与印度尼西亚同行之间的合作。 美国研究生是女性，因此该项目在传统上女性代表性不足的领域（野外地质学和野外古人类学）提供了实地机会。 该项目还支持至少一名美国本科生的实验室培训。 科学研究将通过增加Gadjah Mada大学的实验室收藏，增加用于实地和实验室存档的计算机设备，并通过协助系统的整理工作来支持。 提供基础设施，包括策展设备，以确保长期研究的适当环境。

Populations of Homo erectus may have survived into the late Pleistocene of Java (50,000 years ago), possibly coexisting with modern humans (H. sapiens) in both time and space. Such survival of H. erectus would parallel the coexistence of Neandertals and modern humans in Europe and also begs the question of why only modern humans remain in both regions today. This project tests whether such late-surviving populations of H. erectus existed in Indonesia through a two-year field program in the Solo River Valley, Java. The team will undertake new excavations, microstratigraphic work, and systematic faunal and taphonomic analyses of recovered remains at known sites in the 20 meter terrace (e.g. Jigar, Ngandong) and identify other sites in a similar geological context for test excavation. The team will also test the accuracy of the previously acquired radiometric age estimates (U-series/ESR ages) using other techniques (including radiocarbon (14C), closed system U-series, luminescence and cosmogenic radionuclide techniques). This is the first project to focus explicitly on questions of assemblage formation in Indonesia. These data, in conjunction with those developed for African and Eurasian localities, are critical pieces to modeling the evolution and dispersal of H. erectus.This project establishes a long term collaborative research and training program between Indonesian and American scholars dedicated to answering scientific questions and to the development of Indonesian scientific opportunities. The program is designed to include training opportunities for Indonesian and American students and infrastructure for Indonesian scientists and collections. Field and laboratory training opportunities and at least two PhD projects will be provided for Indonesian graduate students in addition to practical training in curation of systematic collections, taphonomic analyses, and geological field and excavation techniques. International field training will be provided for at least two American graduate students. The program is likewise designed to foster relationships between Indonesian and American graduate students with the goal of encouraging the creation of additional productive collaborations, such as the one between the PI and her Indonesian counterpart. The U.S. graduate students are female, the project thus provides field opportunities in areas (field geology and field paleoanthropology) in which women have been traditionally underrepresented. The project also supports laboratory training of at least one American undergraduate. Scientific research will be supported by augmenting the laboratory collections of Gadjah Mada University with additional computer equipment for field and lab archiving and by assisting in systematic curation efforts. Infrastructure, including curatorial equipment, are provided to ensure an appropriate environment for long term study.