Journal of Earth Science

Silicification in Mississippian Lodgepole Formation, Northeastern Flank of Williston Basin, Manitoba, Canada

Harvey R Young, Rongyu Li, Moe Kuroda

2012, 23(1): 1-18. doi: 10.1007/s12583-012-0229-6

[Abstract](612) [FullText HTML] (276) [PDF 1724KB](61)

Abstract:
Five types of replacement silica are recognized in the Lower Mississippian Virden Member carbonates on the northeastern flank of Williston basin: microcrystalline quartz, chalcedonic quartz, anhedral megaquartz, euhedral megaquartz, and stringy megaquartz. Silica tends to replace various bioclasts, ...

Pole to Equator Temperature Gradient for Coniacian Time, Late Cretaceous: Oxygen and Carbon Isotopic Data on the Koryak Upland and Hokkaido

Yuri D Zakharov, Olga P Smyshlyaeva, Alexander M Popov, Tatiana A Velivetskaya, Tamara B Afanasyeva, Kazushige Tanabe, Yasunari Shigeta, Haruyoshi Maeda

2012, 23(1): 19-32. doi: 10.1007/s12583-012-0230-0

[Abstract](994) [FullText HTML] (135) [PDF 1035KB](21)

Abstract:
The purpose of this study was to estimate the Coniacian latitudinal thermal gradient in the Northern Hemisphere. Both hemipelagic (ammonoids) and benthic (brachiopods and bivalves)δ ¹⁸O and δ ¹³C records were used. They originated from Coniacian shallow-water sequences across a wide range of paleola...

A New Eosauropterygian (Diapsida: Sauropterygia) from the Middle Triassic of Luoping, Yunnan Province

Long Cheng, Xiaohong Chen, Xiongwei Zeng, Yongjian Cai

2012, 23(1): 33-40. doi: 10.1007/s12583-012-0231-z

[Abstract](719) [FullText HTML] (168) [PDF 502KB](54)

Abstract:
A new eosauropterygian, Largocephalosaurus polycarpon gen. et sp. nov., was described based on a skeleton from the Middle Triassic of Luoping(罗平), Yunnan(云南) Province, southwestern China. The new taxon is characterized by a big skull, paired frontal, laterally expanded upper temporal fossa, anterior...

Olivine Compositional Mapping of Mafic-Ultramafic Complexes in Eastern Xinjiang (NW China): Implications for Cu-Ni Mineralization and Tectonic Dynamics

Benxun Su, Kezhang Qin, He Sun, Dongmei Tang, Qinghua Xiao, Pingping Liu, Patrick Asamoah Sakyi

2012, 23(1): 41-53. doi: 10.1007/s12583-012-0232-y

[Abstract](1088) [FullText HTML] (233) [PDF 1071KB](29)

Abstract:
Early Permian mafic-ultramafic complexes in eastern Xinjiang (新疆) are mainly distributed in the Beishan (北山) area, Mid-Tianshan (天山) massif and Jueluotage (觉罗塔格) belt. Systematic compositional mapping of olivines from these Early Permian mafic-ultramafic complexes demonstrates that an apparently spa...

Post-Entrainment Mineral-Magma Interaction in Mantle Xenoliths from Inner Mongolia, Western North China Craton

Yamei Wang, Baofu Han, William L Griffin, Lei Zhang, Guiming Shu

2012, 23(1): 54-76. doi: 10.1007/s12583-012-0233-x

[Abstract](606) [FullText HTML] (98) [PDF 2300KB](28)

Abstract:
In order to distinguish the primary microstructures developed under mantle conditions from the secondary phenomena after xenolith entrainment in the host magma, this study intends to discuss the genesis of spongy, sieve-textured, and reaction rims on mineral grains of mantle xenoliths in the Cenozoi...

Application of the Conceptualization Groundwater Data Model to Study the Upper Arkansas River Corridor, Western Kansas

Xiaoying Yang

2012, 23(1): 77-87. doi: 10.1007/s12583-012-0234-9

[Abstract](899) [FullText HTML] (92) [PDF 1341KB](28)

Abstract:
Large-scale water pumping has caused significant decline in groundwater level in the Upper Arkansas corridor region, which in turn has triggered a chain of hydrological and ecological impacts. A newly developed conceptualization groundwater data model was used to organize various datasets on the Upp...

TSR-Derived Quthigenic Calcites in Triassic Dolomite, NE Sichuan Basin, China—A Case Study of Well HB-1 and Well L-2

Sijing Huang, Keke Huang, Zhiming Li, Ming Fan, Ershe Xu, Jie Lü

2012, 23(1): 88-96. doi: 10.1007/s12583-012-0235-8

[Abstract](927) [FullText HTML] (127) [PDF 845KB](29)

Abstract:
It has been proven that thermochemical sulfate reduction (TSR) took place extensively in the Lower Triassic carbonate reservoirs in Northeast (NE) Sichuan (四川) basin. We have carried out analyses on bulk rock compositions and isotope ratios together with petrography and fluid inclusions to assess th...

Landslide Hazard Mapping Using GIS and Weight of Evidence Model in Qingshui River Watershed of 2008 Wenchuan Earthquake Struck Region

Chong Xu, Xiwei Xu, Fuchu Dai, Jianzhang Xiao, Xibin Tan, Renmao Yuan

2012, 23(1): 97-120. doi: 10.1007/s12583-012-0236-7

[Abstract](881) [FullText HTML] (235) [PDF 1660KB](38)

Abstract:
Tens of thousands of landslides were triggered by May 12, 2008 earthquake over a broad area. The main purpose of this article is to apply and verify earthquake-triggered landslide hazard analysis techniques by using weight of evidence modeling in Qingshui (清水) River watershed, Deyang (德阳) City, Sich...

Health risks of organic contaminated soi l in an out-of-service oil refinery site

Yongpeng Hua, Zejiao Luo, Shenggao Cheng, Rui Xiang

2012, 23(1): 121-128. doi: 10.1007/s12583-012-0237-6

[Abstract](866) [FullText HTML] (117) [PDF 429KB](28)

Abstract:
Health risks assessment due to exposure to organic contaminated soil at an oil refinery out of service is conducted in this study by integrating health risk methods of U.S. EPA (United States Environmental Protection Agency), ASTM (American Society for Testing and Materials) and VROM (Ministry of Ho...

2012 Vol. 23, No. 1

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