U-series dating of Zhangkou Cave in Yiliang,Yunnan Province:Evidence for human activities in China during 40—100 ka

The cultural deposits at pits T1 and T2 in Zhangkou Cave are intercalated with several flowstone layers. U-series dates show that the capping and 2rid flowstone layers are Holocene of age. The 4th and 5th flowstone layers are ca. 55 and 110 ka old respectively. The lithic artifacts bracketed by them provide unequivocal evidence for hominid presence during this time interval. The ““temporal gap““ of hominid fossil, widely quoted as in support of the out-of-Africa hypothesis, is most probably an artifact due to systematic errors of dating techniques. The infillings under 6th flowstone layer date to ＞300 ka, much older than the previous estimate at 15 ka based on classical 14C dating of fossil bones, providing one more example of the limited reliability of this chronometer. With rich relics and favorable conditions for precise dating, this site is promising for further multidisciplinary studies to address issues concerning recent human evolution in China.     

贵州主要磷块岩基本物质组成特征

对贵州主要磷块岩进行了岩石学、矿物学、微量元素地球化学及扫描电镜等方面的初步研究，分析了物质成分及化学组分差异，认为贵州两个重要成磷时期形成的磷块岩物质成分上的差异特征，其形成原因主要与沉积环境有关。     

贵州织金洞旅游者心理行为特征与当前景区开发建设中的若干问题

通过对贵州省织金洞风景名胜区旅游者心理问卷调查,分析了该景区旅游者在游览、住宿等活动中的心理行为特征,提出了织金洞风景名胜区在开发建设中存在的问题及解决途径。     

古人类遗址桐梓岩灰洞的Th-230/U-234年龄

用 Th-230/U-234法测定了岩灰洞钟乳石结层和骨化石样品的年龄。划为第二层的钙板的年龄为21.4万年。先于钙板生成的岩灰洞堆积物的年龄应大于此值,因此应划为更新世中期,桐梓人应属直立人。     

A newly discovered Gigantopithecus fauna from Sanhe Cave, Chongzuo, Guangxi, South China

Among the most important faunas in the Late Cenozoic, the Gigantopithecus faunas have received a good deal of attention. The Gigantopithecus fauna recently discovered in Sanhe Cave consists of more than 80 mammal species, including cf. Hominidae, Pongo sp., Hylobates sp., Sinomastodon yangziensis, Stegodon preorientalis, Cervavitus fenqii, Dicoryphochoerus ultimus and Sus xiaozhu. It is the southernmost Gigantopithecus fauna found so far in China. Its geological age is estimated to be Early Pleistocene based on the fauna and stratigraphic correlation. The significant increase in the estimated body sizes of Ailuropoda, Gigantopithecus and Tapirus shows that the Sanhe fauna is middle Early Pleistocene, later than those from Wushan and Liucheng (early Early Pleistocene). Paleomagnetic dating of the fossil-bearing strata in Sanhe Cave gives an age of approximately 1.2 Ma. The fauna is characterized by tropical-subtropical forest types, including Pongo sp., Tupaia sp., Ia sp., Typhlomys intermedius, etc., and it lacks Palaearctic types. It is a typical tropical forest fauna, suggesting an environment with a lush forest and a warm and humid climate. The discovery of the Sanhe Gigantopithecus fauna is significant for establishing the chronological stages of the Gigantopithecus faunas in China, and for discussing their origin, evolution and dynamics. Supported by Key Knowledge Innovation Project of the Chinese Academy of Sciences (KZCX2-YW-106) and National Basic Research Program of China (Grant No. 2006CB806400)     

Orbital- and millennial-scale variability of the Asian monsoon during MIS8 from Sanbao Cave at Mount Shennongjia,central China

One stalagmite oxygen isotope record from Sanbao Cave, China, established with 7 230Th ages and 355 oxygen isotope data, pro- vides a continuous history of the East Asian Monsoon (EAM) intensity for the period from 284 to 240 thousand years before present (ka BP) with typical errors of 3―4 ka. This new record extends the previously published stalagmite δ18O record back to the marine oxygen isotope stage (MIS) 8. The MIS8 EAM record broadly follows orbitally-induced insolation variations and is punctuated by...     

芙蓉洞CO2变化特征初探

通过2009年9月～2010年11月对芙蓉洞11个监测点CO_2浓度连续监测,发现芙蓉洞CO_2浓度有一定时空变化特征。空间上,由于洞穴环境封闭,洞内CO_2浓度总体上从洞口到洞尾增长,同时游客人数,洞道形状等因素对其产生一定影响;季节上,CO_2浓度与洞穴外部环境有一定的响应关系,冬季外界温度较低,降水量较少,洞内CO_2浓度也较低。     

Huanglong Cave, a new late Pleistocene hominid site in Hubei Province, China

For the past two decades, the modern human origins debate has received significant interest from both the scientific community and the public. The two hypothe- ses “Out of Africa” and “Mutiregional evolution” are focuses of this debate[1-3]. In partic…     

桥梁桩基特大溶洞处理方法的研究与应用

介绍了湖南省郴宁高速公路水龙互通主线桥右幅32#墩1#桩基溶洞成功处理的工程实例.该桩地质复杂,溶洞发育、埋深大、溶洞成串状分布、最大高度21m,通过分级注浆和分级下钢护筒的方法,成功对其进行处理,成桩后,现场声测结果表明,该桩为I类桩.     

丰都张口洞“兴义人”古文化遗址公园建设可行性研究

享有“丰产之地、古居之都”的丰都是兴义市百万人口城市建设拓展的重要区域.张口洞古文化遗址是“兴义人”古文化遗址的核心地带,在此建设“兴义人”古文化遗址公园,条件具备、区位优越、切实可行.