【摘 要】
:
The low diversity agglutinated foraminifers are recovered from the Qihulin Formation of the Longzhaogou Group in eastern Heilongjiang, China. The foraminiferal
【机 构】
:
State Key Laboratory of Paleobiology Stratigraphy,108th Coal-prospecting Team of Geological Bureau
【基金项目】
:
中国科学院知识创新工程项目;国家重点实验室基金;教育部留学回国人员科研启动基金;国家自然科学基金
论文部分内容阅读
The low diversity agglutinated foraminifers are recovered from the Qihulin Formation of the Longzhaogou Group in eastern Heilongjiang, China. The foraminiferal fauna consists of 9 species of 5 genera. The common members are Cribrostomoides nonioninoides (Reuss), Haplophragmoides concavus (Chapman), H. gigas minor Nauss. Although the diagnostic zonal taxa are absent in the agglutinated fauna, according to the global stratigraphic distribution of the above-mentioned species, and the associated Pseudohaploceras ammonite fauna, the foraminiferal fauna may be of a Barremian-Aptian (Early Cretaceous) age.
其他文献
There are giant mineral deposits, including the Jinding Zn-Pb and Baiyangping Ag-Co-Cu, and other important mineral deposits (e.g., Baiyangchang Ag-Cu, Jinman C
The transitional pressure of quartz-coesite under the differential stress and highly-strained conditions is far from the pressure of the stable field under the
The study on sediment production and its relationship with climatic and hydrological factors in watershed is a major environment issue of concern in the interna
2006年9月份,由中铁十七局集团公司同南方路面机械有限公司共同研发出移动式沥青水泥砂浆搅拌设备.重点介绍该设备的设计思路和设计原理,沥青水泥砂浆搅拌工艺,砂浆搅拌设备
Orogenically-derived gold deposits of the Zhongchuan area in the western Qinling are distributed in the exocontact thermal metamorphic zone. The country rocks h
在轮式装载机工作过程中,有时会发生轮胎打滑现象。所谓打滑,是指轮胎在路面上滑移或滑转。此时,装载机的牵引力急剧下降,轮胎磨损,装载机无法正常工作。从车辆的运动学和动
Based on specific well-exposed rocks useful for high-quality remote sensing interpretation in the goldprospecting area in the eastern Tianshan, this paper gives
A simplified adaptive wing, which deflects its leading edge and trailing edge flaps to vary its shape, is calculated to investigate the potential aerodynamic ga